Claims
- 1. A reciprocating saw comprising:
a housing; a spindle mounted for reciprocation relative to the housing, the spindle having a front end adapted to support a saw blade; a motor for moving the spindle in a reciprocating fashion; and a shock absorber mounted on the spindle and operatively positioned between the motor and the front end to at least partially absorb impact to the front end.
- 2. The reciprocating saw of claim 1, and further comprising an actuating member driven by the motor and interconnected with the spindle to reciprocate the spindle, the shock absorber being interconnected between the front end and the actuating member.
- 3. The reciprocating saw of claim 1, wherein the shock absorber is at least partially mounted within the spindle.
- 4. The reciprocating saw of claim 1, wherein the shock absorber comprises an elastomeric cushion.
- 5. The reciprocating saw of claim 1, wherein the spindle is movable in a direction of spindle movement through a cutting stroke and a return stroke, and further comprising a reciprocating member interconnecting the motor with the spindle, the reciprocating member being movable in a direction of reciprocating member movement, the direction of reciprocating member movement being at least partially opposed to the direction of the spindle movement, wherein the motor and the spindle define a drive force path from the motor to the spindle, and wherein at least part of the reciprocating member is in the drive force path.
- 6. The reciprocating saw of claim 5, wherein the reciprocating member is configured to counterbalance movement of the spindle.
- 7. The reciprocating saw of claim 5, wherein the reciprocating member has substantially the same mass as the spindle.
- 8. The reciprocating saw of claim 5, wherein the spindle has an inertial force, and wherein the reciprocating member is positioned to provide an inertial force substantially equal in magnitude and opposite in direction to the inertial force of the spindle during the cutting stroke and the return stroke.
- 9. The reciprocating saw of claim 5, wherein the reciprocating member defines a reciprocating member axis, wherein the spindle defines a spindle axis, and wherein the reciprocating member axis is offset from the spindle axis.
- 10. The reciprocating saw of claim 9, wherein the reciprocating member axis is substantially parallel to the spindle axis.
- 11. The reciprocating saw of claim 5, and further comprising a drive shaft that is driven by the motor, and wherein the reciprocating member is driven by the drive shaft.
- 12. The reciprocating saw of claim 5, wherein the reciprocating member comprises a barrel cam.
- 13. The reciprocating saw of claim 1, and further comprising a pivot body pivotally supported by the housing, the pivot body having a first end interconnected with the spindle and a second end interconnected with the motor.
- 14. The reciprocating saw of claim 13, wherein the spindle includes a spindle pin, and wherein the pivot body includes a slot receiving the spindle pin.
- 15. The reciprocating saw of claim 13, wherein the pivot body is supported by a pivot pin between the first end and the second end, the pivot pin defining a pivot axis.
- 16. The reciprocating saw of claim 15, wherein the pivot pin is supported for movement relative to the housing.
- 17. The reciprocating saw of claim 16, and further comprising an adjustment assembly supporting the pivot pin for movement relative to the housing.
- 18. The reciprocating saw of claim 17, wherein the adjustment assembly includes
a pin support member movably supported by the housing, the pivot pin being supported by the pin support member for movement relative to the housing with the pin support member, and an actuator member for moving the pin support member relative to the housing.
- 19. The reciprocating saw of claim 15, wherein the spindle is driven to an extent, and wherein the pivot pin is movable perpendicular to the pivot axis to thereby vary the extent to which the spindle is driven.
- 20. The reciprocating saw of claim 15, wherein the spindle has a stroke length, and wherein the pivot pin is movable perpendicular to the pivot axis to change the stroke length of the spindle.
- 21. The reciprocating saw of claim 15, wherein the pivot body is pinned to the housing at the pivot point.
- 22. A reciprocating saw comprising:
a housing; a motor supported by the housing; a spindle mounted for reciprocation relative to the housing, the spindle having a front end adapted to support a saw blade; a drive mechanism connected between the motor and the spindle and operable to reciprocate the spindle; and a shock absorber mounted on the spindle and operatively positioned between the drive mechanism and the front end to at least partially absorb impact to the front end.
- 23. The reciprocating saw of claim 22, wherein the drive mechanism includes an actuating member driven by the motor and interconnected with the spindle to reciprocate the spindle, the shock absorber being interconnected between the front end and the actuating member.
- 24. The reciprocating saw of claim 22, wherein the drive mechanism includes a pivot body pivotally supported by the housing, the pivot body having a first end interconnected with the spindle and a second end interconnected with the motor, the shock absorber being between the front end and the first end.
- 25. The reciprocating saw of claim 24, wherein the spindle includes a spindle pin, and wherein the first end of the pivot body engages the spindle pin.
- 26. The reciprocating saw of claim 25, wherein the pivot body includes a slot receiving the spindle pin.
- 27. The reciprocating saw of claim 25 wherein the spindle includes a spindle body supporting the spindle pin, the shock absorber being between the spindle body and the spindle pin.
- 28. The reciprocating saw of claim 24, wherein the pivot body is supported by a pivot pin between the first end and the second end, the pivot pin defining a pivot axis.
- 29. The reciprocating saw of claim 28, wherein the spindle has a stroke length, and wherein the pivot pin is movable perpendicular to the pivot axis to change the stroke length of the spindle.
- 30. The reciprocating saw of claim 22, wherein the shock absorber is at least partially mounted within the spindle.
- 31. The reciprocating saw of claim 22, wherein the shock absorber comprises an elastomeric cushion.
- 32. A reciprocating saw comprising:
a housing; a motor supported by the housing; a spindle mounted for reciprocation relative to the housing, the spindle having a front end adapted to support a saw blade, the spindle including a spindle body and a spindle pin; a drive mechanism connected between the motor and the spindle and operable to reciprocate the spindle, the drive mechanism including a pivot body pivotally supported by the housing, the pivot body having a first end engaging the spindle pin and a second end interconnected with the motor; and a shock absorber mounted on the spindle between the spindle body and the spindle pin to at least partially absorb impact to the front end.
- 33. A reciprocating saw comprising:
a housing; a motor supported by the housing; a spindle mounted for reciprocation relative to the housing, the spindle having a front end for supporting a saw blade and being movable through a cutting stroke and a return stroke, the cutting stroke having a stroke length; and a pivot body connected between the motor and the spindle, the pivot body being driven by the motor to reciprocate the spindle, the pivot body being pivotable relative to the housing about a pivot pin defining a pivot axis, the pivot pin having a position relative to the housing, the position of the pivot pin being selectively adjustable relative to the housing to vary the stroke length of the spindle.
- 34. The reciprocating saw of claim 33, wherein the position of the pivot pin is selectively adjusted in a direction perpendicular to the pivot axis.
- 35. The reciprocating saw of claim 33, wherein the spindle defines a spindle axis, the pivot axis being offset from the spindle axis, wherein the position of the pivot pin is selectively adjusted to vary the offset between the spindle axis and the pivot axis.
- 36. The reciprocating saw of claim 35, wherein the pivot axis is perpendicular to the spindle axis.
- 37. The reciprocating saw of claim 33, and further comprising a reciprocating member driven by the motor for reciprocation along a drive axis, wherein the pivot body has a first end connected with the spindle and a second end connected with the reciprocating member.
- 38. The reciprocating saw of claim 37, wherein the pivot axis is offset from the drive axis.
- 39. The reciprocating saw of claim 37, wherein the pivot axis is movable relative to the drive axis to change the stroke length of the spindle.
- 40. The reciprocating saw of claim 33, and further comprising an adjustment assembly supporting the pivot pin for movement relative to the housing to adjust the stroke length of the spindle.
- 41. The reciprocating saw of claim 40, wherein the adjustment assembly includes
a pin support member movably supported by the housing, the pivot pin being supported by the pin support member for movement relative to the housing with the pin support member, and an actuator member for moving the pin support member relative to the housing.
- 42. The reciprocating saw of claim 41, and further comprising an actuator member for moving the pin support member relative to the housing.
- 43. The reciprocating saw of claim 42, wherein the actuator member is pivotable relative to the housing to move the pin support member relative to the housing.
- 44. The reciprocating saw of claim 43, wherein the pin support member defines an adjustment slot, and wherein the actuator member includes an eccentric adjustment pin movable in the adjustment slot to move the pin support member relative to the housing.
- 45. The reciprocating saw of claim 41, wherein the pin support member is pivotable relative to the housing to move the pivot pin relative to the housing.
- 46. The reciprocating saw of claim 33, and further comprising a shock absorber positioned between the front end and the pivot body to at least partially absorb impact to the front end.
- 47. The reciprocating saw of claim 33, wherein the spindle includes a spindle pin, and wherein the pivot body includes a first end engaging the spindle pin.
- 48. The reciprocating saw of claim 47, wherein the pivot body includes a slot receiving the spindle pin.
- 49. The reciprocating saw of claim 48, wherein the pivot body has a longitudinal axis, the slot extending along the longitudinal axis, the spindle pin being movable in the slot along the longitudinal axis.
- 50. The reciprocating saw of claim 47 wherein the spindle includes a spindle body supporting the spindle pin, and further comprising a shock absorber between the spindle body and the spindle pin.
- 51. A reciprocating saw comprising:
a housing; a motor supported by the housing a spindle supported for reciprocation relative to the housing, the spindle having an end for supporting a saw blade, the spindle being movable through a cutting stroke having a stroke length; a reciprocating member driven by the motor for reciprocation along a drive axis; and a pivot body having a first end connected with the spindle and a second end connected with the reciprocating member so that, as the reciprocating member reciprocates, the pivot body reciprocates the spindle, the pivot body being supported for pivoting movement about a pivot pin defining a pivot axis, the pivot pin being movable relative to the housing to selectively change the stroke length of the spindle.
- 52. The reciprocating saw of claim 51, wherein the pivot axis is movable relative to the drive axis to change the stroke length of the spindle.
- 53. The reciprocating saw of claim 51, wherein the spindle defines a spindle axis, and wherein the pivot axis is movable relative to the spindle axis to change the stroke length of the spindle.
- 54. The reciprocating saw of claim 51, and further comprising an adjustment assembly supporting the pivot pin for movement relative to the housing to adjust the stroke length of the spindle.
- 55. The reciprocating saw of claim 54, wherein the adjustment assembly includes
a pin support member movably supported by the housing, the pivot pin being supported by the pin support member for movement relative to the housing with the pin support member, and an actuator member for moving the pin support member relative to the housing.
- 56. The reciprocating saw of claim 55, and further comprising an actuator member for moving the pin support member relative to the housing.
- 57. The reciprocating saw of claim 56, wherein the actuator member is pivotable relative to the housing to move the pin support member relative to the housing.
- 58. The reciprocating saw of claim 57, wherein the pin support member defines an adjustment slot, and wherein the actuator member includes an eccentric adjustment pin movable in the adjustment slot to move the pin support member relative to the housing.
- 59. The reciprocating saw of claim 55, wherein the pin support member is pivotable relative to the housing to move the pivot pin relative to the housing.
- 60. The reciprocating saw of claim 51, wherein the spindle includes a spindle pin, and wherein the pivot body includes a first end engaging the spindle pin.
- 61. The reciprocating saw of claim 60, wherein the pivot body includes a slot receiving the spindle pin.
- 62. The reciprocating saw of claim 61, wherein the pivot body has a longitudinal axis, the slot extending along the longitudinal axis, the spindle pin being movable in the slot along the longitudinal axis.
- 63. The reciprocating saw of claim 60 wherein the spindle includes a spindle body supporting the spindle pin, and further comprising a shock absorber between the spindle body and the spindle pin.
- 64. A reciprocating saw comprising:
a housing; a motor supported by the housing a spindle supported for reciprocation relative to the housing, the spindle having an end for supporting a saw blade, the spindle being movable through a cutting stroke having a stroke length; a pivot body having a first end connected with the spindle and a second end interconnected with the motor so that the pivot body is operable to reciprocate the spindle, the pivot body being supported for pivoting movement about a pivot pin defining a pivot axis, the pivot pin being movable relative to the housing; and an adjustment assembly supporting the pivot pin for movement relative to the housing to adjust the stroke length of the spindle.
- 65. The reciprocating saw of claim 64, wherein the adjustment assembly includes
a pin support member movably supported by the housing, the pivot pin being supported by the pin support member for movement relative to the housing with the pin support member, and an actuator member for moving the pin support member relative to the housing.
- 66. The reciprocating saw of claim 65, and further comprising an actuator member for moving the pin support member relative to the housing.
- 67. The reciprocating saw of claim 66, wherein the actuator member is pivotable relative to the housing to move the pin support member relative to the housing.
- 68. The reciprocating saw of claim 67, wherein the pin support member defines an adjustment slot, and wherein the actuator member includes an eccentric adjustment pin movable in the adjustment slot to move the pin support member relative to the housing.
- 69. The reciprocating saw of claim 65, wherein the pin support member is pivotable relative to the housing to move the pivot pin relative to the housing.
- 70. The reciprocating saw of claim 64, wherein the spindle includes a spindle pin, and wherein the pivot body includes a first end engaging the spindle pin.
- 71. The reciprocating saw of claim 70, wherein the pivot body includes a slot receiving the spindle pin.
- 72. The reciprocating saw of claim 71, wherein the pivot body has a longitudinal axis, the slot extending along the longitudinal axis, the spindle pin being movable in the slot along the longitudinal axis.
- 73. The reciprocating saw of claim 70 wherein the spindle includes a spindle body supporting the spindle pin, and further comprising a shock absorber between the spindle body and the spindle pin.
- 74. The reciprocating saw of claim 64, and further comprising an indicator arrangement for indicating the stroke length of the spindle, the indicator arrangement including
a first indicator member provided by the adjustment assembly, and a second indicator member provided on the housing, the first indicator member being aligned with the second indicator member to indicate a first stroke length and being misaligned with the second indicator member to indicate a second stroke length.
RELATED APPLICATIONS
[0001] The present application is a continuation-in-part of co-pending application Ser. No. 09/169,509, filed Oct. 9, 1998.
Continuation in Parts (1)
|
Number |
Date |
Country |
Parent |
09169509 |
Oct 1998 |
US |
Child |
09832242 |
Apr 2001 |
US |