Power take off

Title: Power take off

Related Patent Categories: Mining Or In Situ Disintegration Of Hard Material, Hard Material Disintegrating Machines, Floor-working, Rotary Cutter, Slot-type Cutter; E.g., Pavement Saw

Brief Patent Description - Full Patent Description - Patent Claims

The Patent Description & Claims data below is from USPTO Patent Application 20060012238, Power take off.

1. A saw comprising: a frame supported by wheels for moving in a first direction; an engine on the frame at least partly transversely of the frame and including a rotatable output shaft; a support stationary relative to the engine; an output element supported by the stationary support and stationary rotatable relative to the stationary support; a coupling element having a splined coupling portion coupling the output shaft to the output element; and a cutting blade configured for cutting concrete coupled to the output element.

2. The saw of claim 1 wherein the stationary support is an engine block of the engine.

3. The saw of claim 1 wherein the stationary support is an engine housing and the output element is supported by the engine housing and the output element includes a shaft supporting bearings.

4. The saw of claim 3 wherein the output shaft and the output element extend in the same direction.

5. The saw of claim 3 wherein the output element shaft is hollow and the output shaft includes an extension element extending into the hollow output element shaft.

6. The saw of claim 3 wherein the output element includes surfaces for receiving a flexible drive element.

7. The saw of claim 3 wherein the output element is a sheave.

8. The saw of claim 3 wherein the output element includes surfaces for receiving at least four belts.

9. The saw of claim 3 wherein the output element includes a surface for receiving a belt for driving a transmission system.

10. The saw of claim 1 wherein the saw has a width that is no more than 32 inches.

11. A saw comprising: an engine including a rotatable output shaft extending at least partly transversely of the saw; a support stationary relative to the engine; an output element supported by the stationary support and stationary relative to the stationary support; a coupling element coupling the output shaft to the output element; a cutting blade coupled to the output element; wherein the stationary support is an engine housing and the output element is supported by the engine housing and the output element includes a shaft supporting bearings, wherein the coupling element is coupled to the output shaft and to the output element; and wherein the coupling element and output shaft have splines.

12. A kit for assembly onto an engine having a drive element for a power takeoff unit, the kit comprising: a splined shaft configured to be mounted to the drive element of an engine; an output support having a first wall defining an opening for receiving the splined shaft and a second wall for supporting a rotatable output device, and also including at least one engagement surface; a rotatable output device configured to be able to extend over and be supported by the second wall, further including a belt support surface for supporting a belt for extending over the belt support surface of the output device and further including a second engagement surface; and a coupling element having a splined coupling portion for coupling the drive shaft to the rotatable output device so as to allow rotation of the rotatable output device about the second wall.

13. The kit of claim 12 further including bearings configured to extend over the second wall.

14. The kit of claim 13 wherein the bearings, second wall and rotatable output device are configured so that the bearings extend between the second wall and the rotatable output device.

15. The kit of claim 12 wherein the first wall extends through the output support from a first side to a second side and wherein the first wall is configured to receive the drive shaft.

16. The kit of claim 12 wherein the output support includes a mounting plate for mounting the output support to an engine housing.

17. A saw comprising: an engine including a flywheel mounted to a crank shaft wherein the crank shaft extends at least partly transversely of the saw; a splined output shaft mounted to the flywheel; a hollow tube supported by and stationary relative to the engine and extending around the output shaft; a sheave supported by the tube; a coupling element having splines coupling the sheave to the output shaft; and a cutting blade coupled to the sheave.

18. A saw comprising: an engine including a rotatable output shaft extending at least partly transversely of the saw; a support having a support surface and a tube stationary relative to the engine and extending from the support surface about part of the output shaft; an output element having an interior and being supported by the tube and rotatable about the tube; a coupling element having a coupling surface within the interior contacting the output shaft within the interior for coupling the output shaft to the output element; and a cutting blade coupled to the output element.

19. The saw the claim 18 wherein the shaft extends from a first side of the output element to a second side.

20. The saw of claim 19 wherein the shaft does not extend past an outside end surface of the second side of the output element.

21. The saw of claim 18 wherein the shaft includes splines extending within an interior portion of the output element.

22. The saw of claim 21 wherein the shaft splines extend a first length within the interior, wherein the coupling element engages a portion of the shaft splines interior to the output element, and wherein the engaged portion of the shaft splines is less than the first length.

23. The saw off claim 22 wherein the engaged portion is less than half of the first length.

24. The saw of claim 18 wherein the coupling surface on the coupling element includes splines.

25. The saw of claim 24 further including an engagement area between the coupling surface and the shaft wherein the engagement area extends a distance less than an axial length of the coupling element.

26. The saw of claim 25 further including at least two bearing assemblies, one of which is an outer-most bearing assembly having an inside face and wherein the engagement area extends inwardly toward the engine know further no further than the inside face of the outer-most bearing assembly.

27. The saw of claim 25 wherein the output element includes a plurality of belt grooves, one of which is an outer-most groove having an inside face, and wherein the coupling element splines extend inwardly toward the engine know further than the inside face of the outer-most belt groove.

28. The saw of claim 25 wherein the tube includes a counter bore and the coupling surface extends into the counter bore.

29. A saw comprising: an engine including a rotatable output shaft extending at least partly transversely of the saw; a support having a support surface and a tube stationary relative to the engine and extending from the support surface about part of the output shaft; an output element supported by the tube and rotatable about the tube; a splined coupling element for coupling the output shaft to the output element; and a cutting blade coupled to the output element.

30. The saw of claim 29 further including at least two bearing assemblies one of which is an outer-most bearing assembly between the tube and the output element and wherein the splines do not pass in board toward the engine beyond the outer-most bearing assembly.

31. The saw of claim 29 wherein the splined coupling element includes a splined engagement portion for engaging the output shaft and extending in board toward the engine less than half the length of the output shaft.

32. The saw of claim 29 wherein the splined coupling element engages the shaft at a shaft end portion positioned adjacent an outboard-most surface of the output element that is opposite the engine.

33. The saw of claim 29 wherein the support surface includes a bell housing.

34. The saw of claim 33 wherein the bell housing is supported by the engine.

35. The saw of claim 29 wherein the engine includes a flywheel and wherein the rotatable output shaft is a splined shaft mounted to a plate and wherein the plate is mounted to the flywheel.

36. The saw of claim 29 further including a plurality of bearings between the output element and the tube.

37. The saw of claim 36 wherein the plurality of bearings includes four sets of bearing assemblies.

38. The saw of claim 29 wherein the output element includes at least one groove for supporting a belt.

39. The saw of claim 38 wherein the output element includes multiple grooves for supporting multiple belts.

40. The saw of claim 39 wherein the output element includes four grooves.

41. The saw of claim 29 wherein the coupling element extends outboard away from the engine of both the shaft and the output element.

42. The saw of claim 29 wherein the coupling element includes openings for receiving fasteners.

43. The saw of claim 42 wherein the openings extend axially.

44. The saw of claim 42 wherein the coupling element includes an outer perimeter portion and wherein the openings are formed in the outer perimeter portion.

45. The saw of claim 42 further including a fastener extending through the coupling element into the output shaft.

46. The saw of claim 29 wherein the splines on the coupling element engage the output shaft over a distance less than half the length of the output shaft.

47. The saw of claim 29 further including flexible drive elements for coupling the output element to drive the cutting blade.

48. The saw of claim 29 further including a flexible drive element for driving a transmission system for moving the saw.

49. The saw of claim 48 further including drive wheels for moving the saw.

50. The saw of claim 29 further including a first frame for supporting the engine and a second frame for supporting wheels and wherein the first and second frames are movable relative to each other.

51. The saw of claim 50 wherein movement between the first and second frames allow raising and lowering the blade relative to the drive wheels.

52. The saw claim 29 wherein the output element as an overall thickness and the coupling element has and overall an overall thickness less than the overall thickness of the output element.

Brief Patent Description - Full Patent Description - Patent Claims

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Industry Class:
Mining or in situ disintegration of hard material

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