Coupling for excavating wear part

• US 6,993,861 B2
• Filed: 07/02/2002
• Issued: 02/07/2006
• Est. Priority Date: 07/06/2001
• Status: Expired due to Term

• Current Assignee: ESCO Group LLC (WEIR Group PLC)
• Original Assignee: ESCO Corporation (WEIR Group PLC)
• Inventors: Carpenter, Christopher M., Graf, David M.
• Primary Examiner(s): Novosad, Christopher J.
• Application Number:
  US10/187,446
• Publication Number:
  US 20030024139A1
• Time in Patent Office: 1,316 Days
• Field of Search: 374/52, 374/53, 374/55, 374/56, 374/57, 374/58, 374/59, 299/109, 403/374.1, 403/379.4, 403/379.2, 403/321, 403/332.1, 403/322.4, 403/324, 172/772, 172/772.5, 1727011-7013, 172/719, 172/753, 172/750, 172/683
• US Class Current: 37/456
• CPC Class Codes: E02F 9/28 Small metalwork for digging elements, e.g. teeth scraper bits ploughs for agriculture A01B15/00; teeth of harrows A01B23/02
• CPC Class Codes: E02F 9/2825 using adapters
• CPC Class Codes: E02F 9/2833 Retaining means, e.g. pins
• CPC Class Codes: E02F 9/2883 Wear elements for buckets or implements in general
• CPC Class Codes: Y10T 403/595 Lever
• CPC Class Codes: Y10T 403/7064 by wedge or cam

Abstract

A wear assembly provided with a tapered opening and a complementary tapered lock wherein the lock can be pried into and from the opening to thereby eliminate the need for hammering. The lock is formed with a body and a latch that is movable between a hold position where the latch is engageable with a stop in the opening to releasably retain the lock in the opening and a release position where the latch disengages the stop.

Claims

1. A wear assembly for use in excavating comprising:

a support structure;

a wear member comprising a body having a front working end and a rear mounting end, the mounting end having a substantially enclosed portion forming a rearwardly opening socket for receiving the support structure, and an ear extending rearward from the body and substantially free of the enclosed portion, the ear having a tapered slot; and

a lock received into the slot by which the wear member is retained to the support structure.

2. A wear assembly in accordance with claim 1 in which the slot includes a front wall and a rear wall which converge.

3. A wear assembly in accordance with claim 2 in which the socket is partially defined by opposed walls, one of which supports the ear, and the slot further includes an inlet end by which the lock is inserted into the slot and a sidewall that extends between the front and rear walls, wherein the sidewall converges toward a central plane of the socket as the sidewall extends away from the inlet end where the central plane extends generally between and bisects the opposed walls.

4. A wear assembly in accordance with claim 3 in which the sidewall extends away from the central plane of the socket as the sidewall extends rearward.

5. A wear assembly in accordance with claim 4 in which the slot further includes a distal end opposite the inlet end that is closed by a distal wall.

6. A wear assembly in accordance with claim 5 in which the slot further includes a notch in the sidewall adjacent the rear wall and the inlet end.

7. A wear assembly in accordance with claim 1 wherein the socket is partially defined by opposed walls, one of which supports the ear, and the slot is defined by an open inlet end by which the lock is inserted into the slot, a front wall, an opposing rear wall, and a sidewall extending between the front and rear wall, and wherein the sidewall converges toward a central plane of the socket extending generally parallel to the rearward extension of the ear as the sidewall extends away from the inlet end where the central plane extends generally between and bisects the opposed walls.

8. A wear assembly in accordance with claim 1 wherein the socket is partially defined by opposed walls, one of which supports the ear, and the slot is defined by an open inlet end by which the lock is inserted into the slot, a front wall, an opposing rear wall, and a sidewall extending between the front and rear wall, and wherein the sidewall converges toward a central plane of the socket extending generally parallel to the rearward extension of the ear as the sidewall extends forward where the central plane extends generally between and bisects the opposed walls.

9. A wear assembly in accordance with claim 1 in which the slot includes a stop for releasably retaining the lock in the opening.

10. A wear assembly in accordance with claim 1 in which the slot includes a notch in at least one wall.

11. A wear assembly in accordance with claim 1 wherein the slot includes a front wall and a rear wall, and the rear wall includes a projecting portion adjacent the inlet end that extends inward beyond central portions of the ear.

12. A wear assembly in accordance with claim 1 wherein the lock further includes a body and a latch, the latch being movable between a hold position and a release position.

13. A wear assembly in accordance with claim 12 wherein the lock further includes a resilient member, and the resilient member normally biases the latch toward the hold position.

14. A wear assembly in accordance with claim 12 wherein the latch includes a pin that is received into a hole in the body of the lock to define a pivot axis about which the latch moves.

15. A wear assembly in accordance with claim 12 wherein one of the body and latch includes a rail and the other of the body and latch includes a groove receiving the rail, the rail and groove cooperating to retain the latch member and body together.

16. A wear assembly in accordance with claim 12 which further includes a fastener that selectively holds the latch in the hold and release positions.

17. A wear assembly in accordance with claim 12 wherein the latch includes at least one pry surface against which a tool is adapted to press against to move the latch to the release position.

18. A wear assembly in accordance with claim 12 wherein the lock includes at least one pry surface against which a tool is adapted to press against to pull the lock from the slot.

19. A wear assembly in accordance with claim 12 which further includes a secondary latch that releasably holds the latch in the hold position.

20. A wear assembly for use in excavating comprising:

a support structure secured to excavating equipment;

a wear member including a wear surface and a support cavity for receiving the support structure;

an opening having an inlet end;

a stop; and

a lock received into the opening to retain the wear member on the support structure, the lock including a body and a latch, the latch being movable between a hold position where the latch engages the stop to prevent release of the lock from the opening inlet end when the lock is fully inserted into the opening and a release position wherein the latch is disengaged from the stop to permit removal of the lock from the opening, and the lock having at least one pry surface facing at least partially away from the inlet end of the opening and accessible by a tool to move the latch to the release position and to pull the lock from the opening.

21. A wear assembly in accordance with claim 20 wherein the lock has a shape that generally complements the opening, and the opening narrows as it extends away from the inlet end.

22. A wear assembly in accordance with claim 21 wherein the opening includes a front wall and a rear wall that converge as they extend away from the inlet end.

23. A wear assembly in accordance with claim 22 in which the opening has a width that extends generally parallel to the front and rear walls, wherein the width narrows as the opening extends away from the inlet end.

24. A wear assembly in accordance with claim 23 wherein the opening widens from the front wall to the rear wall.

25. A wear assembly in accordance with claim 21 in which the opening includes a front wall, a rear wall, and a width that extends generally parallel to the front and rear walls, wherein the width narrows as the opening extends away from the inlet end.

26. A wear assembly in accordance with claim 21 wherein the opening includes a front wall and a rear wall, and the opening widens as the opening extends from the front wall to the rear wall.

27. A wear assembly in accordance with claim 20 wherein the wear member includes an ear extending rearward of the cavity that partially defines the opening.

28. A wear assembly in accordance with claim 20 wherein the latch includes a pin that is received into a hole in the body to define a pivot axis about which the latch moves.

29. A wear assembly in accordance with claim 28 wherein one of the body and the latch includes a rail and the other of the body and the latch includes a groove receiving the rail, the rail and groove cooperating to retain the latch and the body together.

30. A wear assembly in accordance with claim 29 wherein the lock further includes a fastener that selectively retains the latch member in the hold and release positions.

31. A wear assembly in accordance with claim 30 wherein the lock further includes a resilient member that biases the latch toward the hold position.

32. A wear assembly in accordance with claim 20 wherein one of the body and the latch includes a rail and the other of the body and the latch includes a groove receiving the rail, the rail and the groove cooperating to retain the latch and the body together.

33. A wear assembly in accordance with claim 20 wherein the body includes a hood that extends over at least part of the latch.

34. A wear assembly in accordance with claim 20 in which the latch includes a retaining portion that engages the stop in the hold position, wherein the at least one pry surface and the retaining portion are defined on the same side of the latch.

35. A wear assembly in accordance with claim 20 in which the latch includes a retaining portion that engages the stop in the hold position, wherein the at least one pry surface and the retaining portion are defined on opposite sides of the latch member.

36. A wear assembly in accordance with claim 20 wherein the body includes a support surface against which a portion of the latch abuts when the lock is pried from the slot.

37. A wear assembly in accordance with claim 36 wherein the body includes a hood that defines the support surface.

38. A wear assembly in accordance with claim 36 in which the body includes a hole that receives a pin from the latch member, wherein a surface of the hole defines the support surface.

39. A wear assembly in accordance with claim 20 in which the body includes a catch that engages and releasably retains the latch in the release position.

40. A wear assembly in accordance with claim 20 wherein the body includes a channel and the latch is movably received in the channel for movement between the hold and release positions.

41. A wear assembly in accordance with claim 20 in which the body further includes a stop that engages and positions the latch in the hold position.

42. A wear assembly in accordance with claim 20 wherein the lock further includes a resilient member that is adapted to bias the latch toward the hold position.

43. A wear assembly in accordance with claim 20 which further includes a secondary latch that releasably holds the latch in the hold position.

44. A wear assembly in accordance with claim 20 in which the lock includes a bias member that presses against the support structure.

45. A wear assembly for use in excavating comprising:

a support structure;

a wear member having a support cavity for receiving the support structure;

an opening defined between the support structure and the wear member, the opening having an inlet end and narrowing in a plurality of generally perpendicular planes as the opening extends away from the inlet end; and

a lock received into the opening through the inlet end to retain the wear member to the support structure, the lock narrowing in a plurality of generally perpendicular planes to complement the narrowing of the opening.

46. A wear assembly in accordance with claim 45 wherein the opening includes a front wall and a rear wall that converge as they extend away from the inlet end.

47. A wear assembly in accordance with claim 46 in which the opening includes sidewalls that extend between the front and rear walls, wherein the sidewalls converge as they extend away from the inlet end.

48. A wear assembly in accordance with claim 47 in which portions of the front wall are narrower than directly opposing portions of the rear wall.

49. A wear assembly in accordance with claim 45 in which the opening includes a front wall and a rear wall, wherein portions of the front wall are narrower than directly opposing portions of the rear wall.

50. A wear assembly in accordance with claim 45 in which the opening includes a front wall, a rear wall and a sidewall extending between the front and rear walls, wherein the sidewall in inclined such that the opening narrows in a direction transverse to the sidewall as the opening extends from the inlet end.

51. A wear assembly in accordance with claim 45 in which the opening includes a stop, and the lock includes a latch that engages the stop to hold the lock in the opening.

52. A wear assembly in accordance with claim 45 wherein the wear member has a rearwardly extending ear that includes the opening.

53. A lock for a wear assembly for an excavator having a support structure and a wear member, the lock comprising:

a body that tapers toward one end along at least a substantial portion of the length of the body;

a latch attached to the body for movement between a hold position where the latch engages a stop in the wear assembly to hold the lock in the wear assembly and a release position where the latch member is disengaged from the stop to permit removal of the lock from the wear assembly; and

at least one pry surface remote from said one end, facing at least partially toward said one end, and being accessible by a tool to move the latch member to the release position and to pull the lock from the wear assembly.

54. A lock in accordance with claim 53 further including a resilient member that biases the latch member toward the hold position.

55. A lock in accordance with claim 54 wherein the latch member includes a pin that is received into a hole in the body to define a pivot axis about which the latch moves.

56. A lock in accordance with claim 55 wherein one of the body and the latch includes a rail and the other of the body and the latch includes a groove receiving the rail, the rail and the groove cooperating to retain the latch and body together.

57. A lock in accordance with claim 53 which further includes a fastener that selectively holds the latch in the hold and release positions.

58. A lock in accordance with claim 53 wherein the latch member includes a pin that is received into a hole in the body to define a pivot axis about which the latch moves.

59. A lock in accordance with claim 53 wherein one of the body and the latch includes a rail and the other of the body and the latch includes a groove receiving the rail, the rail and the groove cooperating to retain the latch and body together.

60. A lock in accordance with claim 53 wherein the body includes a hood that extends over at least part of the latch.

61. A lock in accordance with claim 53 wherein the latch includes a retaining portion that engages the stop to hold the lock in the wear assembly, and the at least one pry surface and the retaining portion are defined on the same side of the latch.

62. A lock in accordance with claim 53 wherein the latch includes a retaining portion that engages the stop to hold the lock in the wear assembly, and the at least one pry surface and the retaining portion are defined on opposite sides of the latch.

63. A lock in accordance with claim 53 wherein a first pry surface is provided on the latch to move the latch to the release position, and a second pry surface is provided on the body to move the lock from the opening.

64. A lock in accordance with claim 63 wherein the first and second pry surfaces are arranged near each other such that the pry tool need only be located in one position before operating.

65. A lock in accordance with claim 53 wherein the body includes a support surface against which a portion of the latch abuts when the lock is pried from the wear assembly.

66. A lock in accordance with claim 65 wherein the body includes a hood that defines the support surface.

67. A lock in accordance with claim 65 in which the body includes a hole that receives a pin from the latch, wherein a surface of the hole defines the support surface.

68. A lock in accordance with claim 53 wherein the latch includes a pivot structure received in a hole to define a pivot axis for the movement of the latch.

69. A lock in accordance with claim 53 in which the body includes a catch that engages and releasably retains the latch in the release position.

70. A lock in accordance with claim 53 wherein the body includes a channel and the latch is movably received in the channel for movement between the hold and release positions.

71. A lock in accordance with claim 53 in which the body further includes a stop that engages and positions the latch in the hold position.

72. A lock in accordance with claim 53 which further includes a bias member that presses against the support structure.

73. A lock in accordance with claim 53 which further includes a secondary latch that releasable holds the latch in the hold position.

74. A method of mounting a wear member having a support cavity onto excavating equipment having a support structure, the method comprising placing the wear member on the support structure such that the support structure is received into the support cavity, and using a leverage tool that engages the wear member or the support structure as a base to pry a lock into an opening defined by the wear member and the support structure.

75. A method in accordance with claim 74 in which the opening and the inserted lock have complementary tapered configurations.

76. A method in accordance with claim 75 in which the inserted lock has a latch movable between a hold position and a release position, the lock being pried into the opening so that the latch engages a stop on one of the wear member and the support structure to retain the lock in the opening.

77. A method in accordance with claim 76 wherein the inserted lock has a resilient member that biases the latch toward the hold position, and the latch automatically engages the stop to retain the lock in the opening as the lock is inserted into the opening.

78. A method in accordance with claim 76 further including moving the latch into engagement with the stop to retain the lock in the opening after the lock is inserted into the opening.

79. A method in accordance with claim 74 wherein the support structure is a nose of an adapter.

80. A method of removing a wear member from a support structure secured to excavating equipment wherein a support cavity of the wear member is received over the support structure and a lock with a latch sets in an opening with the latch fit behind a stop to retain the lock in the opening, the method comprising moving the latch to a release position, pulling the lock from the opening by using a leverage tool to engage the wear member or the support structure as a base to engage a pry surface on the lock, and removing the wear member from the support structure.

81. A method in accordance with claim 80 wherein a tool engages the pry surface on a rear surface of the lock.

82. A method in accordance with claim 80 wherein a tool engages the pry surface on a front surface of the lock.

83. A method in accordance with claim 80 wherein the tool is placed in a single location relative to the lock and is operated to move the latch to the release position and to pull the lock from the opening.

84. A method in accordance with claim 83 wherein the tool rotates to move the latch to the release position and to pull the lock from the opening.

85. A method in accordance with claim 84 wherein the tool has a generally cylindrical engagement member that engages the lock to move the latch to the release position and to pull the lock from the opening.

86. A method in accordance with claim 85 wherein the tool engages the latch to move the latch to the release position and engages a body of the lock to pull the lock from the opening.

87. A method in accordance with claim 80 wherein the support structure is a nose of an adapter.

88. A method in accordance with claim 87 wherein the wear member is a point of an excavating tooth.

89. A method of removing a wear member from a support structure secured to excavating equipment wherein a support cavity of the wear member is received over the support structure and a lock is received in an opening to releasably retain the wear member to the support structure, the method comprising (i) placing a tool in a first position against the lock and one of the wear member and the support structure, (ii) rotating the tool such that the lock is pulled from the opening, (iii) removing the lock from the opening;

and (iv) removing the wear member from the support structure.

90. A method in accordance with claim 89 wherein the tool is generally cylindrical.

91. A method in accordance with claim 90 wherein the tool has a non-cylindrical distal projection that includes a pry structure that engages the lock to pull the lock from the opening.

92. A method in accordance with claim 89 wherein the lock includes a latch that secures the lock in the opening and the rotating of the tool moves the latch to a release position and pulls the lock from the opening.

93. A method in accordance with claim 92 wherein the lock includes a body that movably supports the latch and the body includes at least one pry surface against which the tool engages to pull the lock from the opening.

94. A method in accordance with claim 89 wherein the engagement member is rotated by a motor.

95. A method in accordance with claim 89 wherein the tool has a longitudinal axis that is generally parallel with the axis of rotation of the tool.

96. A method in accordance with claim 89 wherein the removing of the wear member from the support structure includes placing the pry tool between the wear member and the support structure and rotating the pry tool to pull the wear member from the support structure.

97. A wear assembly for use in excavating comprising:

a support structure;

a wear member comprising a body having a front working end and a rear mounting end, the mounting end having a rearwardly opening socket for receiving the support structure, and at least one ear extending rearward from the body, the ear having a tapered slot, wherein the socket is partially defined by opposed walls, one of which supports the ear, wherein the slot is defined by an open inlet end, a front wall, an opposing rear wall, and a sidewall extending between the front and rear walls, and wherein the sidewall converges toward a central plane of the socket as the sidewall extends away from the inlet end, the central plane extending generally between and bisecting the opposing walls and generally facing the rearward extension of the ear; and

a lock received into the slot through the inlet end to retain the wear member to the support structure.

98. A wear assembly for use in excavating comprising:

a support structure;

a wear member comprising a body having a front working end and a rear mounting end, the mounting end having a rearwardly opening socket for receiving the support structure, and at least one ear extending rearward from the body, the ear having a tapered slot, wherein the socket is partially defined by opposed walls, one of which supports the ear, and the slot is defined by an open inlet end, a front wall, an opposing rear wall, and a sidewall extending between the front and rear wall, and wherein the sidewall converges toward a central plane of the socket as the sidewall extends forward, the central plane extending generally between and bisecting the opposing walls and generally facing the rearward extension of the ear; and

a lock received into the slot through the inlet end to retain the wear member to the support structure.

99. A wear assembly for use in excavating comprising:

a support structure;

a wear member comprising a body having a front working end and a rear mounting end, the mounting end having a rearwardly opening socket for receiving the support structure, and at least one ear extending rearward from the body, the ear having a tapered slot, wherein the slot includes a notch in at least one wall; and

a lock received into the slot by which the wear member is retained to the support structure.

100. A wear assembly for use in excavating comprising:

a support structure;

a wear member comprising a body having a front working end and a rear mounting end, the mounting end having a rearwardly opening socket for receiving the support structure, and at least one ear extending rearward from the body, the ear having a tapered slot with an inlet end, wherein the slot includes a front wall and a rear wall, and the rear wall includes a projecting portion adjacent the inlet end that extends inward beyond central portions of the ear; and

a lock received into the slot by which the wear member is retained to the support structure.

101. A lock for a wear assembly for an excavator having a support structure and a wear member, the lock comprising:

a body that tapers toward one end along at least a substantial portion of the length of the body;

a latch attached to the body for movement between a hold position where the latch engages a stop in the wear assembly to hold the lock in the wear assembly and a release position where the latch member is disengaged from the stop to permit removal of the lock from the wear assembly, wherein one of the body and the latch includes a rail and the other of the body and the latch includes a groove receiving the rail, the rail and the groove cooperating to retain the latch and body together; and

at least one pry surface by which a tool presses to move the latch member to the release position and to pull the lock from the wear assembly.

102. A lock for a wear assembly for an excavator having a support structure and a wear member, the lock comprising:

a body that tapers toward one end along at least a substantial portion of the length of the body;

a latch attached to the body for movement between a hold position where the latch engages a stop in the wear assembly to hold the lock in the wear assembly and a release position where the latch member is disengaged from the stop to permit removal of the lock from the wear assembly, wherein the body includes a hood that extends over at least part of the latch; and

at least one pry surface by which a tool presses to move the latch member to the release position and to pull the lock from the wear assembly.

103. A lock for a wear assembly for an excavator having a support structure and a wear member, the lock comprising:

a body that tapers toward one end along at least a substantial portion of the length of the body;

a latch attached to the body for movement between a hold position where the latch engages a stop in the wear assembly to hold the lock in the wear assembly and a release position where the latch member is disengaged from the stop to permit removal of the lock from the wear assembly, wherein the body includes a support surface against which a portion of the latch abuts when the lock is pried from the opening; and

at least one pry surface by which a tool presses to move the latch member to the release position and to pull the lock from the wear assembly.

104. A lock for a wear assembly for an excavator having a support structure and a wear member, the lock comprising:

a body that tapers toward one end along at least a substantial portion of the length of the body;

a latch attached to the body for movement between a hold position where the latch engages a stop in the wear assembly to hold the lock in the wear assembly and a release position where the latch is disengaged from the stop to permit removal of the lock from the wear assembly, wherein the body includes a channel and the latch is movably received in the channel for movement between the hold and release positions; and

at least one pry surface by which a tool presses to move the latch to the release position and to pull the lock from the wear assembly.

105. A lock for a wear assembly for an excavator having a support structure and a wear member, the lock comprising:

a body that tapers toward one end along at least a substantial portion of the length of the body;

a latch pivotally attached to the body for movement between a hold position where the latch extends laterally outward of a wall of the body to engage a stop in the wear assembly to hold the lock in the wear assembly, and a release position where the latch member is retracted relative to the wall of the body and is disengaged from the stop to permit removal of the lock from the wear assembly; and

a resilient element between the body and the latch to bias the latch in a lateral direction outward of the wall of the body and into the hold position.

106. A lock in accordance with claim 105 wherein the body includes a hole and the latch includes a pivot pin received in the hole.

107. A lock in accordance with claim 105 in which the body includes a hood remote from the one end, wherein the hood overlies the latch and resilient element.

108. A lock in accordance with claim 105 wherein one of the body and the latch includes a rail and the other of the body and the latch includes a groove receiving the rail, the rail and the groove cooperating to retain the latch and body together.

109. A lock in accordance with claim 105 wherein the latch includes a pry surface by which a tool presses to move the latch member to the release position for removal of the lock from the wear assembly.

110. A lock in accordance with claim 105 wherein the latch includes a pry surface by which a tool presses to move the latch member to the release position and to pull the lock from the wear assembly.

111. A lock for a wear assembly for an excavator having a support structure and a wear member, the lock comprising:

a body with a first end to be first received into the wear assembly and a second opposite end;

a latch attached to the body for movement between a hold position where the latch extends outward of a wall of the body to engage a stop in the wear assembly to hold the lock in the wear assembly, and a release position where the latch member is retracted relative to the wall of the body and is disengaged from the stop to permit removal of the lock from the wear assembly; and

a hood of the body at the second end that overlies the latch.

112. A lock in accordance with claim 111 further comprising a resilient element between the body and the latch to bias the latch to the hold position.

113. A lock in accordance with claim 111 wherein the body tapers toward the first end along at least a substantial portion of the length of the body.

114. A lock for a wear assembly for an excavator having a support structure and a wear member, the lock comprising:

a body with a first end to be first received into the wear assembly and a second opposite end; and

a latch attached to the body for movement between a hold position where the latch extends outward of a wall of the body to engage a stop in the wear assembly to hold the lock in the wear assembly, and a release position where the latch member is retracted relative to the body and is disengaged from the stop to permit removal of the lock from the wear assembly, wherein one of the body and the latch includes a rail and the other of the body and the latch includes a groove receiving the rail, the rail and the groove cooperating to retain the latch and body together.

115. A lock in accordance with claim 114 further comprising a resilient element between the body and the latch to bias the latch to the hold position.

116. A lock in accordance with claim 114 wherein the lock includes a hood at the second end that overlies the latch and resilient element.

117. A lock in accordance with claim 114 wherein the body tapers toward the first end along at least a substantial portion of the length of the body.

118. A lock for a wear assembly for an excavator having a support structure and a wear member, the lock comprising:

a body having a first end, a second end, and a first axis that extends from the first end to the second end, wherein the body tapers toward the first end along at least a substantial portion of the length of the body; and

a latch attached to the body for movement generally along a length of an arcuate path of rotation about a second axis extending generally transverse to the first axis, the latch being movable between a hold position where the latch extends outward of a wall of the body to engage a stop in the wear assembly to hold the lock in the wear assembly, and a release position where the latch is retracted relative to the wall of the body and is disengaged from the stop to permit removal of the lock from the wear assembly.

119. A lock in accordance with claim 118 further comprising a resilient element between the body and the latch to bias the latch to the hold position.

120. A lock in accordance with claim 118 in which the body includes a hole and the latch a pin that is received in the hole, wherein the pin defines the second axis.

121. A lock in accordance with claim 118 wherein the body includes a hood at the second end that overlies the latch and resilient element.

122. A lock in accordance with claim 118 wherein one of the body and the latch includes a rail and the other of the body and the latch includes a groove receiving the rail, the rail and the groove cooperating to retain the latch and body together.

123. A lock for a wear assembly for an excavator having a support structure and a wear member, the lock comprising:

a body having a first end and a second end, wherein the body tapers toward the first end along at least a substantial portion of the length of the body in two generally perpendicular planes to form a substantial narrowing of the body toward the first end in said two planes for easy receipt within a complementary opening in the wear assembly; and

a latch coupled to the body for movement between a hold position where the latch engages a stop in the wear assembly to hold the lock in the wear assembly, and a release position where the latch disengages from the stop to permit removal of the lock from the wear assembly.

124. A lock in accordance with claim 123 wherein the body has a longitudinal axis and the latch moves generally about an axis that is transverse to the longitudinal axis.

125. A lock in accordance with claim 123 wherein the latch is pivotally secured to the body.

126. A lock in accordance with claim 123 further comprising a resilient member to bias the latch toward the hold position.

127. A lock in accordance with claim 123 further comprising at least one contact surface facing toward the first end to engage for pulling the lock from the opening.

128. A lock in accordance with claim 123 further comprising at least one pry surface for engaging with a pry tool to pull the lock from the opening.

129. A lock in accordance with claim 128 wherein the at least one pry surface is further engaged to move the latch from the hold position to the release position.

130. A lock for securing a wear member to an excavator, the lock comprising:

a body having a leading end for initial receipt into an opening where the lock holds the wear member in place, an opposite trailing end, sidewalls extending between the leading and trailing ends, and a first axis extending from the leading end to the trailing end;

a latch attached to the body for movement generally along a length of an arcuate path of rotation about a second axis that is generally transverse to the first axis between a hold position and a release position, the latch extending outside of one of the sidewalls to engage a stop on the wear member or excavator and thereby retain the lock in the opening in the hold position, and being retracted from the hold position to release the latch from the stop and permit removal of the lock from the opening; and

a resilient element compressed between the body and the latch to bias the latch to the hold position.

131. A lock in accordance with claim 130 wherein the resilient element is an elastomer.

132. A lock in accordance with claim 130 further comprising a pivot pin to couple the latch to the body.

133. A lock in accordance with claim 132 wherein the pivot pin projects from the latch and is received within a hole in the body.

134. A lock in accordance with claim 130 wherein the latch includes a bearing surface for engagement by a tool for moving the latch to the release position.

135. A lock in accordance with claim 134 wherein the bearing surface facilitates pulling the lock from the opening by the tool.

136. A lock in accordance with claim 135 wherein the bearing surface faces at least partially away from the trailing end of the body.

137. A lock in accordance with claim 130 wherein the body includes a hood at the trailing end to at least partially overlie the latch.

138. A lock in accordance with claim 130 further including a bearing surface for pulling the lock from the opening by using a tool, wherein the bearing surface faces at least partially away from the trailing end of the body.

139. A lock for securing a wear member to an excavator, the lock comprising:

a body, a latch, and a pivot pin to couple the latch to the body;

the body having a leading end for initial receipt into an opening where the lock holds the wear member in place, an opposite trailing end, sidewalls extending between the leading and trailing ends, and a first axis extending from the leading end to the trailing end; and

the latch being attached to the body for movement generally about a second axis between a hold position and a release position, the second axis being defined by the pivot pin that is generally transverse to the first axis, the latch extending outside of one of the sidewalls to engage a stop on the wear member or excavator and thereby retain the lock in the opening in the hold position, and being retracted from the hold position to release the stop and permit removal of the lock from the opening in the release position.

140. A lock in accordance with claim 139 wherein the pivot pin projects from the latch and is received within a hole in the body.

141. A lock in accordance with claim 140 wherein the latch includes a bearing surface for engagement by a tool for moving the latch to the release position.

142. A lock in accordance with claim 140 wherein the bearing surface facilitates pulling the lock from the opening by the tool.

143. A lock in accordance with claim 142 wherein the bearing surface faces at least partially away from the trailing end of the body.

144. A lock in accordance with claim 139 wherein the body includes a hood at the trailing end to at least partially overlie the latch.

145. A lock in accordance with claim 139 further including a bearing surface for pulling the lock from the opening by using a tool, wherein the bearing surface faces at least partially away from the trailing end of the body.

146. A lock to be received in an opening in a wear assembly for an excavator, the wear assembly having a base and a wear member fit over the base, the lock comprising:

a body having a leading end, an opposite trailing end, and a first axis extending from the leading end to the trailing end, the body being defined in part by a pair of opposite walls adapted to contact corresponding walls defining the opening, the opposite walls converging toward the leading end along at least part of their lengths; and

a latch attached to the body for movement between a hold position where the latch engages a stop in the wear assembly to hold the lock in the wear assembly and a release position where the latch is disengaged from the stop to permit removal of the lock from the wear assembly, the latch moving between the hold and release positions in directions generally transverse to the first axis, and, in the hold position, the latch being generally restrained in a direction parallel to the first axis to hold the lock in the wear assembly substantially free of bias tending to move the body along the first axis relative to the latch.