Digging hardware signaling apparatus

• US 5,743,031 A
• Filed: 02/23/1996
• Issued: 04/28/1998
• Est. Priority Date: 02/23/1996
• Status: Expired due to Fees

• Current Assignee: H&L Tooth Company
• Original Assignee: HH&L Company
• Inventors: Flagg, William A., Launder, Brian L.
• Primary Examiner(s): Melius, Terry Lee
• Assistant Examiner(s): Beach, Thomas A.
• Application Number:
  US08/606,065
• Time in Patent Office: 795 Days
• Field of Search: 37/454, 37/455, 37/456, 37/460, 37/413, 37/358, 37/446, 37/449, 37/465, 37/906, 116/214, 116/81, 116/70, 116/208, 299/1.2, 299/1.05
• US Class Current: 37/455
• CPC Class Codes: E02F 9/267 Diagnosing or detecting failure of vehicles
• CPC Class Codes: E02F 9/2808 Teeth
• CPC Class Codes: Y10S 37/906 Visual aids and indicators for excavating tool

Abstract

An apparatus for providing a signal indicative of loss or imminent loss of digging hardware normally arranged in operable association with an earth working implement.

Claims

1. A digging tooth assembly for an earth digging implement, said digging tooth assembly comprising:

adapter configured to extend forwardly from a forward edge of said digging implement;

a digging tooth configured to slidably fit about and along a lengthwise portion of and be releasably secured to said adapter, said digging tooth having a ground penetrating edge transversely extending across a forward end portion thereof;

a wear member extending across a rear portion of said digging tooth for protecting said adapter against wear during use of said digging tooth assembly, said digging tooth and said wear member including cooperative instrumentalities for maintaining said digging tooth and said wear member in predetermined relation relative to each other; and

an apparatus for providing a signal indicative of an inadvertent change in the predetermined relationship between said wear member and said digging tooth.

2. The digging tooth assembly according to claim 1 wherein said apparatus provides a visual indication of an inadvertent change in the predetermined relationship between said wear member and said digging tooth.

3. The digging tooth assembly according to claim 1 wherein the cooperative instrumentalities for maintaining the wear member and said digging tooth in said predetermined relationship relative to each other comprises suitably shaped outer configurations on the rear end portion of said digging tooth and an abutting surface of said wear member.

4. The digging tooth assembly according to claim 1 wherein said apparatus for providing a signal comprises an actuatable indicator and an actuator, wherein said actuator monitors the predetermined relationship between said digging tooth and said wear member and actuates said indicator to provide a signal indicative of an inadvertent change in the predetermined relationship between said digging tooth and said wear member.

5. The digging tooth assembly according to claim 4 wherein said actuatable indicator further includes a smoke canister protectively carried by one of said digging tooth and said wear member, with said actuator being connected between said canister and the other of said digging tooth and said wear member.

6. The digging tooth assembly according to claim 1 wherein said wear member is arranged in a predetermined relationship with said adapter as long as said wear member and said digging tooth remain in said predetermined relationship relative to each other.

7. The digging tooth assembly according to claim 6 wherein said apparatus for providing a signal comprises an actuatable indicator and an actuator, wherein said actuator monitors the predetermined relationship between said wear member and said adapter and actuates said indicator to provide a signal indicative of an inadvertent change in the predetermined relationship between said adapter and said wear member.

8. The digging tooth assembly according to claim 7 wherein said actuatable indicator further includes a smoke canister protectively carried by one of said adapter and said wear member, with said actuator being connected between said canister and the other of said adapter and said wear member.

9. The digging tooth assembly according to claim 6 wherein said apparatus for providing a signal comprises an actuatable indicator and an actuator, wherein said actuator monitors the predetermined relationship between said digging tooth and said adapter and actuates said indicator to provide a signal indicative of an inadvertent change in the predetermined relationship between said adapter and said digging tooth.

10. The digging tooth assembly according to claim 9 wherein said actuatable indicator further includes a smoke canister protectively carried by one of said adapter and said digging tooth, with said actuator being connected between said canister and the other of said adapter and said digging tooth.

11. The digging tooth assembly according to claim 1 wherein a connector comprised of first and second elongated connector pieces maintains the releasably secured relationship between said digging tooth and said digging implement as long as said connector pieces are arranged in operable combination relative to each other.

12. The digging tooth according to claim 1 wherein a connector releasably connects said adapter to said earth digging implement, and wherein said connector is comprised of first and second elongated connector pieces for maintaining the releasable connection between said adapter and said earth digging implement as long as said connector pieces are arranged in operable combination relative to each other.

13. A digging tooth assembly for a digging implement, said digging tooth assembly comprising:

an elongated high strength digging tooth adapted for rigid connection to and in predetermined relationship with a leading edge of the digging implement;

an actuatable warning apparatus for providing an actuated signal to alert an operator of loss or impending loss of said digging tooth relative to said digging implement.

14. The digging tooth assembly according to claim 13 wherein said warning apparatus provides a visual signal indicative of an inadvertent change in the predetermined relationship between said digging tooth and said digging implement.

15. The digging tooth assembly according to claim 13 wherein said warning apparatus comprises a actuatable indicator and an actuator, wherein said actuator monitors the predetermined relationship between said digging tooth and said digging implement and actuates said indicator to provide the signal indicative of an inadvertent change in the predetermined relationship between said digging tooth and said implement.

16. The digging tooth assembly according to claim 15 wherein said actuatable indicator comprises a smoke canister carried by one of said digging tooth and said implement, with said actuator being connected between said canister and the other of said digging tooth and said implement.

17. The digging tooth assembly according to claim 16 wherein said digging tooth comprises an elongated member having a cutting edge extending across a forward end region of the tooth generally transverse relative to an elongated axis of said member, and a blind socket opening to a rear end portion of the tooth.

18. The digging tooth assembly according to claim 17 wherein said elongated member defines a cavity accessible from the blind socket, and wherein said smoke canister is protectively accommodated within said cavity defined by said elongated cast member of said tooth.

19. The digging tooth assembly according to claim 13 further including an adapter configured with a nose region at a distal end thereof and having a rear end portion configured to allow said adapter to be connected in predetermined relation relative to said digging implement, and wherein said digging tooth is adapted to be arranged in predetermined relationship along and about the nose region of said adapter.

20. The digging tooth assembly according to claim 19 wherein said warning apparatus comprises a smoke canister, protectively carried by one of said digging tooth and said adapter, and an actuator extending from said canister and operably coupled to the other of said digging tooth and said adapter, wherein said actuator monitors the predetermined relationship between said digging tooth and said adapter and activates said canister to release a smoke signal when there is an inadvertent change in the predetermined relationship between the digging tooth and said adapter.

21. The digging tooth assembly according to claim 19 wherein said warning apparatus comprises a smoke canister protectively carried toward a rear end portion of said adapter, and an actuator extending from said canister and having a free end adapted for connection to the digging implement, wherein said actuator monitors the predetermined relationship between said digging implement and said adapter and activates said canister to release a smoke signal when there is an inadvertent change in the predetermined relationship between the digging implement and said adapter.

22. The digging tooth assembly according to claim 13 further including a connector for releasably connecting said digging tooth to said digging implement.

23. The digging tooth assembly according to claim 22 wherein said warning apparatus is carried by said connector.

24. The digging tooth assembly according to claim 22 wherein said connector comprises two elongated connector pieces for maintaining a releasable connection between said digging tooth and said digging implement as long as said connector pieces are arranged in operable combination relative to each other.

25. The digging tooth assembly according to claim 22 wherein a first connector piece of said connector defines a cavity for releasably and protectively accommodating a smoke canister forming part of said warning apparatus, said warning apparatus further including an actuator extending from said canister and operably coupled to a second connector piece of said connector, said first and second connector pieces being arranged in operable combination relative to each other to maintain said digging tooth in releasable association with the digging implement, and wherein said actuator monitors the operable relationship between said connector pieces and activates said smoke canister to release a smoke signal when there is an inadvertent change in the operable relationship of the connector pieces of said connector.

26. The digging tooth assembly according to claim 13 further including an adapter adapted to be arranged in a predetermined relationship with and extend forwardly from a leading edge of said digging implement, said adapter being configured to have said digging tooth arranged in a predetermined relationship relative thereto.

27. The digging tooth assembly according to claim 26 further including a connector for releasably connecting said digging tooth to said adapter.

28. The digging tooth assembly according to claim 27 wherein said warning apparatus is carried by said connector.

29. The digging tooth assembly according to claim 27 wherein said connector comprises two elongated connector pieces for maintaining a releasable connection between said digging tooth and said adapter as long as said connector pieces are arranged in operable combination relative to each other.

30. The digging tooth assembly according to claim 27 wherein a first connector piece of said connector defines a cavity for releasably and protectively accommodating a smoke canister forming part of said warning apparatus, said warning apparatus further including an actuator extending from said canister and operably coupled to a second connector piece of said connector, said first and second connector pieces being arranged in operable combination relative to each other to maintain said digging tooth in releasable association with the digging implement, and wherein said actuator monitors the operable relationship between said connector pieces and activates said smoke canister to release a smoke signal when there is an inadvertent change in the operable relationship of the connector pieces of said connector.

31. The digging tooth assembly according to claim 26 wherein said warning apparatus comprises an actuatable visual indicator and an actuator operably coupled to said visual indicator for monitoring the predetermined relationship between said digging implement and said adapter to provide a visual signal indicative of an inadvertent change in the predetermined relationship between the digging implement and said adapter.

32. The digging tooth assembly according to claim 26 wherein said warning apparatus comprises an actuatable visual indicator and an actuator operably coupled to said visual indicator, wherein said actuator monitors the predetermined relationship of between said digging tooth and said adapter and actuates said visual indicator to provide a visual signal indicative of an inadvertent change in the predetermined relationship between the digging tooth and said adapter.

33. A digging implement having a digging tooth assembly mounted to and in predetermined relationship with a leading edge of said implement, and a warning apparatus including an actuatable indicator and a actuator operably coupled to said indicator, wherein said actuator monitors the predetermined relationship of said tooth assembly and said digging implement and actuates said actuatable indicator to provide a visual signal indicative of an inadvertent change in the predetermined relationship between said digging tooth assembly and said digging implement.

34. The digging implement according to claim 33 wherein said digging tooth assembly comprises a high strength digging tooth arranged in operable combination with an adapter.

35. The digging implement according to claim 34 wherein the actuatable indicator of said warning apparatus comprises a smoke canister protectively carried by one of said digging tooth and said adapter.

36. The digging implement according to claim 33 further including a connector for releasably connecting said digging hardware to the leading edge of the implement.

37. The digging implement according to claim 36 wherein said warning apparatus is carried by said connector.

38. A connector assembly including a connector for releasably maintaining a digging tooth assembly in operable association with a leading edge of a digging implement, said connector further including a warning apparatus operably associated with said connector for providing a signal in the event of a failure of said connector to maintain said digging tooth assembly in operable combination with the leading edge of said implement.

39. The connector assembly according to claim 38 wherein said connector comprises a first and second elongated connector pieces arranged in an operable relationship relative to each other, with outer surfaces on said connector pieces combining to define a wedge shaped outer surface configuration for said connector.

40. The connector assembly according to claim 39 wherein one outer surface configuration of said connector has a serrated surface configuration.

41. The connector assembly according to claim 39 wherein said warning apparatus comprises an actuatable indicator carried by said first elongated connector piece and an actuator operable coupled to said actuator, wherein said actuator monitors the operable relationship between said connector pieces and actuates said actuatable indicator to provide a visual signal indicative of an inadvertent change in the operable relationship of the connector pieces relative to each other.

42. The connector assembly according to claim 41 wherein said actuatable indicator comprises a smoke canister protectively carried by said first connector piece, with said actuator being connected to said second connector piece.

43. The connector assembly according to claim 39 wherein said connector further includes shear pins for inhibiting said connector pieces from endwise movement relative to each other.

44. A connector for maintaining digging hardware in operable association with a digging implement, said connector including two elongated metal pieces configured to pass endwise through the digging hardware in a predetermined relationship relative to each other and an apparatus carried by said connector for indicating possible loss of the operable association between said digging hardware and the digging implement.

45. The connector according to claim 44 wherein said connector further comprises springs for normally urging said metal pieces of said connector away from each other.

46. The connector according to claim 44 wherein said apparatus comprises an actuatable indicator carried by a first elongated metal piece and a free-ended actuator extending from and operably coupled to said indicator, wherein the free end of said actuator is operably coupled to a second elongated piece of said connector such that the actuator monitors the predetermined relationship of said first and second connector pieces and actuates said indicator to provide a visual signal indicative of an inadvertent change in the predetermined relationship of said first and second connector pieces.

47. The connector assembly according to claim 46 wherein said actuatable indicator comprises a smoke canister protectively carried by said first connector piece.

48. The connector assembly according to claim 44 wherein said connector further includes shear pins for inhibiting said connector pieced from endwise movement relative to each other.

49. The connector according to claim 44 wherein the outer surfaces of said connector pieces combine with each other when arranged in their predetermined relationship relative to one another to define a wedge shaped outer surface configuration for said connector.

50. The connector according to claim 49 wherein an outer surface of one of said connector pieces has a serrated configuration disposed between opposite ends of said connector piece.