Splitter and cutting member guard assembly

• US 6,405,624 B2
• Filed: 07/08/1998
• Issued: 06/18/2002
• Est. Priority Date: 07/08/1998
• Status: Expired due to Fees

• Current Assignee: Chang Type Industrial Company, Ltd.
• Original Assignee: Delta International Machinery Corp. (Stanley Black & Decker, Inc.)
• Inventors: Sutton, Stephen O.
• Primary Examiner(s): Shoap, Allan N.
• Assistant Examiner(s): Choi, Stephen
• Application Number:
  US09/111,980
• Publication Number:
  US 20010035081A1
• Time in Patent Office: 1,441 Days
• Field of Search: 831/021, 834/78, 834/772, 838/60, 83D/IG.1
• US Class Current: 83/102.1
• CPC Class Codes: B27G 19/02 for circular saws
• CPC Class Codes: B27G 19/08 Accessories for keeping open the saw kerf, e.g. riving knives or wedge plates
• CPC Class Codes: Y10T 83/2077 By kerf entering guide
• CPC Class Codes: Y10T 83/773 Work-support includes passageway for tool [e.g., slotted table]
• CPC Class Codes: Y10T 83/7734 With guard for tool
• CPC Class Codes: Y10T 83/96 Guard

Abstract

A splitter and cutting member guard assembly for mounting on a table saw or other similarly constructed device including a circular saw blade or other rotating, oscillating, or otherwise driven cutting member, a table portion including a workpiece supporting surface and having a void therethrough for passage of a portion of the cutting member, and a table insert removably disposed within the void and including a slot for passage of the cutting member. The splitter and cutting member assembly includes a cutting member guard hood for covering an operative portion of the cutting member and a splitter for passing through a workpiece kerf as the workpiece is fed past the splitter. The cutting member guard hood is movably mounted to the splitter and is pivotable or otherwise movable relative to the splitter between a first position, in which the cutting member hood covers the operative portion of the cutting member, and a second position, in which the operative portion of the cutting member is not covered by the cutting member guard hood. The cutting member guard hood may be retained in the second position if the table insert is removed from the void in the table portion.

Claims

1. A splitter and cutting member guard assembly for mounting on a cutting device including a cutting member, a table portion, a void defined by said table portion, and a table insert removably disposed in the void, the splitter and cutting member guard assembly comprising:

a splitter comprising a second retention element; and

a cutting member guard hood comprising a first retention element, wherein said cutting member guard hood is movably mounted to said splitter and pivotable between a first position, in which said cutting member guard hood covers an operative portion of the cutting member, and a second position, in which the operative portion of the cutting member is not covered by said cutting member guard hood and wherein when said cutting member guard hood is in said second position, said second retention element releasably retainingly engages said first retention element to thereby retain said cutting member guard hood in said second position, and wherein when the table insert is disposed in the void, said first retention element is prevented from retainingly engaging said second retention element.

2. The splitter and cutting member guard assembly of claim 1 wherein said first position corresponds to a lowered postion of said cutting member guard hood and said second position corresponds to a raised position of said cutting member guard hood.

3. The splitter and cutting member guard assembly of claim 1 wherein said cutting member guard hood is pivotally mounted to said splitter by a pivot assembly connected to both said cutting member guard hood and said splitter.

4. The splitter and cutting member guard assembly of claim 3 wherein gravity biases said cutting member guard hood to said first position.

5. The splitter and cutting member guard assembly of claim 4 wherein said pivot assembly comprises a pivot member having first and second ends wherein said first end is rotatably connected to said cutting member guard hood about a first axis of rotation and said second end is rotatably connected to said splitter about a second axis of rotation.

6. The splitter and cutting member guard assembly of claim 5 wherein rotation of said pivot member about said second axis is limited to less than 90°

.

7. The splitter and cutting member guard assembly of claim 1 wherein said first retention element comprises a projecting portion and said second retention element comprises a first recess, and wherein with said cutting member guard hood in said second position, said projecting portion is disposed within said first recess.

8. The splitter and cutting member guard assembly of claim 7 wherein said cutting member guard hood is biased to said first position.

9. The splitter and cutting member guard assembly of claim 8 wherein gravity biases said cutting member guard hood toward said first position.

10. The splitter and cutting member guard assembly of claim 9 wherein said first position corresponds to a lowered position of said cutting member guard hood and said second position corresponds to a raised position of said cutting member guard hood.

11. The splitter and cutting member guard assembly of claim 7 wherein said splitter further comprising a second recess, and wherein with said cutting member guard hood in said first position, said projecting portion is disposed within said second recess.

12. The splitter and cutting member guard assembly of claim 7 wherein said cutting member guard hood comprises a first lateral wall, a second lateral wall, and a third wall connecting said first lateral wall and said second lateral wall in a spaced-apart relationship, and said third wall comprising said projecting portion, and wherein said projecting portion is a projecting tab.

13. The splitter and cutting member guard assembly of claim 12 wherein said splitter comprises a plate having an edge and said edge includes said first recess.

14. The splitter and cutting member guard assembly of claim 13 wherein said edge of said splitter further includes an arcuate recess;

the assembly further comprising at least one workpiece-gripping member pivotally mounted to said splitter about said first axis of rotation and disposed between said plate and one of said first and second lateral walls of said cutting member guard hood.

15. The splitter and cutting member guard assembly of claim 1 wherein said splitter comprises at least one attachment member, said attachment member attaching said splitter to the cutting device.

16. A cutting device comprising:

a driven cutting member;

a table portion;

a void defined in the table portion, a removable table insert selectively positionable within the void;

a splitter and cutting member guard assembly, the splitter and cutting member guard assembly comprising;

a cutting member guard hood; and

a splitter, said cutting member guard hood movably mounted to a connection portion of said splitter and pivotable between a first position, in which said cutting member guard hood covers an operative portion of the cutting member, and a second position, in which the operative portion of the cutting member is not covered by said cutting member guard hood, said cutting member guard hood having a retention element that releasably retainingly engages a corresponding retention portion of said splitter when said cutting member guard hood is in said second position to thereby retain said cutting member guard hood in said second position, and wherein with the table insert positioned within said void, said retention element is prevented from retainingly engaging said corresponding retention portion of said splitter.

17. A splitter and cutting member guard assembly for mounting on a cutting device having a cutting device further including a table portion, a void defined in the table portion, and a removable table insert selectively positionable within the void and including a cutting member slot, the assembly comprising:

a splitter; and

a cutting member guard hood, said cutting member guard hood movably connected to a connection portion of said splitter and positionable between a first position, in which said cutting member guard hood covers a portion of the circular cutting member, and a second position, in which the portion of the circular cutting member is not covered by the cutting member guard hood, a retention portion of said cutting member guard hood releasably retainingly engaging a corresponding retention portion of said splitter to thereby retain said cutting member guard hood in said second position, said retention portion of said cutting member guard hood prevented from selectively engaging said corresponding retention portion of said splitter when the table insert is positioned within the void in the table portion.

18. The splitter and cutting member guard assembly of claim 17 wherein said retention portion of said cutting member guard hood is a projecting tab and said corresponding retention portion of said splitter is a notch in a perimeter of said splitter.

19. The splitter and cutting member guard assembly of claim 17 wherein said cutting member guard hood is biased to assume said first position.

20. The splitter and cutting member guard assembly of claim 17 wherein another portion of said cutting member guard hood extends into the void of the table portion when said cutting member guard hood is in said second position.

21. A splitter and cutting member guard assembly for mounting on a cutting device having a driven cutting member, the cutting device further including a table portion, a void in the table portion, and a removable table insert removably positioned within the void and including a cutting member slot, the assembly comprising a splitter for passing through a workpiece kerf and a cutting member guard hood, said cutting member guard hood movably connected to a connection portion of said splitter and positionable between a first position, in which said cutting member guard hood covers an operative portion of the cutting member, and a second position, in which the operative portion of the cutting member is not covered by the cutting member guard hood, wherein when said cutting member guard hood is in said second position, a retention portion of said cutting member guard hood releasably retainingly engages a corresponding retention portion of said splitter to thereby retain said cutting member guard hood in said second position, another portion of said cutting member guard hood positioned within the void in the table portion when said cutting member guard hood is in said second position, wherein when the table insert is positioned within said void, said retention portion of said cutting member guard hood is prevented from retainingly engaging said corresponding retention portion of said splitter.

22. The splitter and cutting member guard assembly of claim 21 wherein said retention portion of said cutting member guard hood includes a projecting tab and wherein said corresponding retention portion of said splitter includes a notch, said projecting tab engaging said notch only when the table insert is removed from the void in the table portion.

23. The splitter and cutting member guard assembly of claim 22 wherein said cutting member guard hood is biased to assume said first position.

24. A cutting device comprising:

a driven cutting member;

a table portion;

a void in the table portion;

a removable table insert in the void; and

a splitter and cutting member guard assembly having the construction recited in claim 21.

25. A splitter and cutting member guard assembly for mounting on a cutting device a driven cutting member, the cutting device further including a table portion with a surface defining a table surface plane, a void in the table portion, and a removable table insert positioned within the void and including a cutting member slot, a surface of the table insert being within the table surface plane when the table insert is positioned within the void, the assembly comprising a splitter and a cutting member guard hood, said cutting member guard hood pivotally connected to a connection portion of said splitter and movable relative to said splitter between a first position, in which said cutting member guard hood covers an operative portion of the driven cutting member, and a second position, in which the operative portion of the driven cutting member is not covered by the cutting member guard hood, and wherein when said cutting member guard hood is in said second position, a retention portion of said cutting member guard hood releasably retainingly engages a corresponding retention portion of said splitter to thereby retain said cutting member guard hood in said second position, said cutting member guard hood extending through the table surface plane into the void when said cutting member guard hood is in said second position, said retention portion of said cutting member guard hood thereby being prevented from retainingly engaging said corresponding retention portion of said splitter when the table insert is positioned within the void in the table portion.

26. A cutting device comprising:

a driven cutting member;

a table portion defining a table surface plane;

a void in the table portion, a removable table insert positioned within the void and including a cutting member slot, a surface of the table insert being within the table surface plane when the table insert is positioned within the void; and

a splitter and cutting member guard assembly having the construction recited in claim 25.

27. A cutting device comprising:

a table portion having a void therethrough and including a workpiece support surface;

a frame, said table portion mounted on said frame;

a table insert removably supported within said void and including a slot through which a driven cutting member extends; and

a splitter and cutting member guard assembly mounted to the cutting device, said splitter and cutting member guard assembly comprising a cutting member guard hood and a splitter said cutting member guard hood pivotally connected to said splitter and pivotable between a first position, in which said cutting member guard hood covers an operative portion of the cutting member, and a second position, in which the operative portion of the cutting member is exposed, said cutting member guard hood having a first retention element that releasably retainingly engages a second retention element on said splitter to thereby retain said cutting member guard hood in said second position, said first retention element prevented from retainingly engaging said second retention element to thereby retain said cutting member guard hood in said second position when said table insert is positioned within said void in said table portion.

28. The cutting device of claim 27 wherein said first position corresponds to a lowered position of said cutting member guard hood and said second position corresponds to a raised position of said cutting member guard hood.

29. The cutting device of claim 28 wherein said cutting member guard hood is connected to said splitter by a pivot assembly that is pivotally mounted to both said cutting member guard hood and said splitter.

30. The splitter and cutting member guard assembly of claim 29 wherein gravity biases said cutting member guard hood to assume said first position.

31. The cutting device of claim 29 wherein said pivot assembly comprises a pivot member having first and second ends wherein said first end is rotatably connected to said cutting member guard hood about a first axis of rotation and said second end is rotatably connected to said splitter about a second axis of rotation, said cutting member guard hood pivotable between said first position and said second position by rotating said pivot member about said second axis of rotation relative to said splitter.

32. The cutting device of claim 31 wherein said pivot member defines a longitudinal axis, and wherein an angle defined by a first orientation of said longitudinal axis at which said cutting member guard hood is in said first position and a second orientation of said longitudinal axis wherein said pivot member is in an extreme rotated position, is less than 90 degrees.

33. The cutting device of claim 27 wherein said first retention element comprises a projecting portion of said cutting member guard hood and said second retention element comprises a first recess, said projecting portion being disposed within said first recess when said cutting member guard hood is in said second position to thereby retain said cutting member guard hood in said second position.

34. The cutting device of claim 33 wherein said cutting member guard hood is biased toward said first position.

35. The cutting device of claim 34 wherein gravity biases said cutting member guard hood toward said first position.

36. The cutting device of claim 35 wherein said first position corresponds to a lowered position of said cutting member guard hood and said second position corresponds to a raised position of said cutting member guard hood.

37. The cutting device of claim 33 wherein said splitter further defines a second recess, and wherein said projecting portion of said cutting member guard hood is disposed within said second recess when said cutting member guard hood is in said second position.

38. The cutting device of claim 27 wherein said cutting member guard hood extends over said slot in said table insert when said cutting member guard hood is in said first position.

39. The cutting device of claim 38 wherein when said table insert is disposed with said void in said table portion a surface of said table insert is within said table insert plane, said cutting member guard hood intersecting said table insert plane and another portion of said cutting member guard hood being disposed within said void in said table portion when said cutting member guard hood is in said second position, said another portion of said cutting member guard hood disposed outside of said void in said table portion when said cutting member guard hood is in said first position.

40. The cutting device of claim 39 wherein said cutting member guard hood comprises a first lateral wall, a second lateral wall, and a third wall connecting said first lateral wall and said second lateral wall in a spaced-apart relationship, and wherein said region of said cutting member guard hood is a portion of at least one of said first lateral wall and said second lateral wall.

41. The cutting device of claim 37 wherein said cutting member guard hood comprises a first lateral wall, a second lateral wall, and a third wall connecting said first lateral wall and said second lateral wall in a spaced-apart relationship, and wherein said projecting portion is a projecting tab defined between said first and second lateral walls and defined by at least a portion of said third wall.

42. The cutting device of claim 41 wherein said splitter comprises a plate having at least top, distal, and proximal edges, and wherein said second retention element is a recess defined by said top edge.

43. The cutting device of claim 42 wherein a first axis of rotation passes through and is generally perpendicular to said plate.

44. The cutting device of claim 43 wherein said splitter of said splitter and cutting member guard assembly includes an arcuate recess, said splitter and cutting member guard assembly comprising at least one workpiece-gripping pawl pivotally mounted to said splitter about said first axis of rotation and between said plate and one of said first and second lateral walls of said cutting member guard hood, said splitter and cutting member guard assembly further comprising a spring, said spring biasing said pawl toward said support surface.

45. A cutting device comprising:

a table portion having a void therethrough and including a workpiece support surface;

a frame, said table portion mounted on said frame;

a table insert removably supported within said void and including a slot through which a driven cutting member extends; and

a splitter and cutting member guard assembly mounted to at least one of said frame and said table portion, said splitter and cutting member guard assembly comprising a splitter and a cutting member guard hood, said cutting member guard hood movably connected to a connection portion of said splitter and positionable in a first position, in which said cutting member guard hood covers an operative portion of the cutting member, and a second position, in which the operative portion of the cutting member is not covered by the cutting member guard hood, and wherein when said cutting member guard hood is in said second position a retention portion of said cutting member guard hood releasably retainingly engages a corresponding retention portion of said splitter to thereby retain said cutting member guard hood in said second position, said retention portion of said cutting member guard hood being prevented from selectively engaging said corresponding retention portion of said splitter to retain said cutting member guard hood in said second position when said table insert is positioned within said void in said table portion.

46. The cutting device of claim 45 wherein said retention portion of said cutting member guard hood is a projecting tab and said corresponding retention portion of said splitter is a notch in a perimeter of said splitter.

47. The cutting device of claim 45 wherein when said cutting member guard hood is biased to assume said first position.

48. The cutting device of claim 46 wherein another portion of said cutting member guard hood is disposed within said table portion when said cutting member guard hood is in said second position.

49. A cutting device comprising:

a table portion having a void therethrough and including a workpiece support surface;

a frame, said table portion mounted on said frame;

a table insert removably supported within said void and including a slot through which a driven cutting member extends; and

a splitter and cutting member guard assembly mounted to the cutting device, said splitter and cutting member guard assembly comprising;

a splitter including a first retention structure thereon; and

a cuttting member guard hood movably mounted to said splitter and positionable in at least a first position, in which said cutting member guard hood covers the operative portion of the cutting member, and a second position, in which the operative portion of the cutting member is not covered by the cutting member guard hood, said cutting member guard hood including a second retention structure thereon, one of said first retention structure and said second retention structure releasably retainingly engaging the other of said first retention structure and said second retention structure when said cutting member guard hood is in said second position, said first retention structure and said second retention structure incapable of retainingly engaging each other when said table insert is positioned within said void in said table portion.

50. A cutting device comprising:

a table portion having a void therethrough and including a workpiece support surface;

a frame, said table portion mounted on said frame;

a table insert removably supported within said void and including a slot through which a driven cutting member extend; and

a splitter and cutting member guard assembly mounted on the cutting device, said splitter and cutting member guard assembly comprising a splitter and a cutting member guard hood, said cutting member guard hood pivotally connected to a connection portion of said splitter and positionable between a first position, in which said cutting member guard hood covers the operative portion of the cutting member, and a second position, in which the operative portion of the cutting member is not covered by the cutting member guard hood, and wherein when said cutting member guard hood is in said second position, a retention portion of said cutting member guard hood releasably retainingly engages a corresponding retention portion of said splitter to thereby retain said cutting member guard hood in said second position, another portion of said cutting member guard hood being positioned within said void in said table portion when said cutting member guard hood is in said second position, said cutting member guard hood thereby being prevented from assuming said second position when said table insert is positioned within said void in said table portion.

51. The cutting device of claim 50 wherein said retention portion of said cutting member guard hood is a projecting tab and wherein said corresponding retention portion of said splitter comprises a notch, said projecting tab enagagable with said notch when said table insert is removed from said void in said table portion.

52. The cutting device of claim 50 wherein said retention portion of said cutting member guard hood is a projecting tab and said corresponding retention portion of said splitter defines a notch, said projecting tab enagagable with said notch when said table insert is removed from said void in said table portion.

53. A cutting device comprising:

a table portion having a void therethrough and including a workpiece support surface defining a support surface plane;

a frame on which said table portion is mounted;

a table insert selectively positionable within said void and including a slot through which a driven cutting member extends, said table insert including a surface within said support surface plane when said table insert is disposed within said void; and

a splitter and cutting member guard assembly mounted to the cutting device, said splitter and cutting member guard assembly comprising a splitter and a cutting member guard hood, said cutting member guard hood pivotally connected to said splitter and movable relative to said splitter between a first position, in which said cutting member guard hood covers an operative portion of the cutting member, and a second position, in which the operative portion of the cutting member is not covered by the cutting member guard hood, when said cutting member guard hood is in said second position, a retention portion of said cutting member guard hood releasably retainingly engages a corresponding retention portion on said splitter to thereby retain said cutting member guard hood in said second position, another portion of said cutting member guard hood extending through said table surface plane into said void when said cutting member guard hood is in said second position.

54. A cutting device comprising:

means for supporting a workpiece, said means for supporting including a first void therethrough;

means for bracing said means for supporting;

means for filling said first void removably supported within said first void and including a second void therethrough through which a driven cutting member may extend; and

a splitter and cutting member guard assembly mounted on the cutting device comprising;

means for covering an operative portion of the driven cutting member rotatably mounted on the cutting device;

means for passing through a workpiece kerf, said means for passing through a workpiece kerf having a second retention means, said means for covering being mounted to said means for passing through and being pivotable between a first position, in which said means for covering covers the operative portion of the cutting member, and a second position, in which the operative portion of the cutting member is not covered by said means for covering, said means for covering having a first retention means in releasable retaining engagement with said second retention means when said means for covering is in said second position to thereby retain said means for covering in said second position, said first retention means prevented from engaging said second retention means when said means for filling is positioned within said first void in said means for supporting.

55. A splitter and cutting member guard assembly for mounting to a cutting device including a table portion, a void through the table portion, and a table insert removably supported within the void, the table insert having a slot therethrough through which a driven cutting member extends and being removable from the table portion to provide access through the table portion, the splitter and cutting member guard assembly comprising means for covering an operative portion of the cutting member, the splitter and cutting member guard assembly further comprising means for passing through a workpiece kerf, said means for covering being mounted to said means for passing and movable between a first position, in which said means for covering covers the operative portion of the circular cutting member, and a second position, in which the operative portion of the circular cutting member is exposed, said means for covering having a first retention means which releasably retainingly engages a second retention means on said means for passing to thereby retain said means for covering in said second position, said first retention means incapable of engaging said second retention means when said table insert is positioned within the void in the table portion.