Backdrive overload release clutch
AssigneeSundstrand Corporation
InventorsDavid C. Quick, John Whitehouse
Life of this patent
Estimating the term…
Abstract
A backdrive overload clutch mechanism which includes a rotatable drive member and a rotatable driven member mounted concentric with respect to the drive member. A pair of cooperating clutch jaws, including chamfered teeth, are provided with one jaw on each of the drive and driven members for rotation therewith and separable by relative movement between the members longitudinally of their axis of rotation. A first spring normally urges the clutch jaws into driving engagement. A tongue-and-groove disengaging device disengages the clutch jaws automatically in response to relative rotation between the clutch jaws. A second spring maintains the clutch jaws out of driving engagement when the clutch jaws are automatically disengaged.
Claims13
An overload clutch mechanism, comprising:
- a rotatable drive member;
- a rotatable driven member mounted concentric with respect to the drive member;
- a pair of cooperating clutch jaws one on each of said members for rotation therewith and separatable by relative movement between the members longitudinally of their axis of rotation;
- first biasing means normally urging the clutch jaws into driving engagement;
- means for disengaging the clutch jaws automatically in response to only relative rotation between the clutch jaws;
- and
- second biasing means independent of said first biasing means for maintaining the clutch jaws out of driving engagement once the clutch jaws are automatically disengaged.
An overload clutch mechanism, comprising:
- a rotatable drive member;
- a rotatable driven member mounted concentric with respect to the drive member;
- a pair of cooperating clutch jaws one on each of said members for rotation therewith and separable by relative movement between the members longitudinally of their axis of rotation;
- first biasing means normally urging the clutch jaws into driving engagement;
- means for disengaging the clutch jaws automatically in response to relative rotation between the clutch jaws wherein said disengaging means comprises a tongue-and-groove arrangement, said tongue and groove arrangement having tongue means operatively associated with the drive member and groove means operatively associated with the drive member, whereby angular alignment thereof occurs in response to relative rotation of the members to effect automatic disengagement of the members;
- and
- second biasing means independent of said first biasing means for maintaining the clutch jaws out of driving engagement once the clutch jaws are automatically disengaged.
An overload clutch mechanism, comprising:
- a rotatable drive member;
- a rotatable driven member mounted concentric with respect to the drive member;
- a pair of cooperating clutch jaws one on each of said members for rotation therewith and separable by relative movement between the members longitudinally of their axis of rotation, each clutch jaw having an annular array of chamfered teeth concentric with said axis and providing a camming effect therebetween to allow said relative rotation between the members;
- first biasing means normally urging the clutch jaws into driving engagement;
- a tongue-and-groove disengaging means for disengaging the clutch jaws automatically in response to relative rotation between the clutch jaws whereupon angular alignment of the tongue-and-groove disengaging means occurs in response to said relative rotation to effect automatic disengagement of the members;
- and
- second biasing means independent of said first biasing means for maintaining the clutch jaws out of driving engagement once the clutch jaws are automatically disengaged.
Dependencies are inferred from the claim text.