Reverse rotation prevention device
AssigneeCooper Cameron Corporation
InventorsOmar Kabir, Edward Czechowski
Life of this patent
Estimating the term…
Abstract
Apparatus and methods to prevent the rotation of a shaft in one direction using a device comprising a collar disposed around the shaft, a locking arm with an unlocked position and a locked position, and an actuator capable of moving the locking-arm between the unlocked and locked position. When the locking arm is in the unlocked position, the collar and shaft are allowed to rotate in a first direction. However, when the locking arm is in the locked position, the collar and shaft are prevented from rotating in a second direction. This device can also be used to prevent the reverse rotation of a rotating compressor.
Claims30
A device to prevent the rotation of a shaft in one direction comprising:
- a collar disposed around the shaft, wherein said collar is rotationally fixed relative to the shaft;
- a locking-arm with an unlocked position allowing said collar and the shaft to rotate in a first direction and a locked position preventing said collar and the shaft from rotating in a second direction;
- and
- an actuator operable to move said locking-arm between the locked position and the unlocked position.
A device to prevent the reverse rotation of a rotating compressor comprising:
- a driveshaft;
- a power supply coupled to one end of said driveshaft, wherein said power supply is operable to rotate said driveshaft in a first direction;
- a collar disposed around said driveshaft, wherein said collar is rotationally fixed relative to said driveshaft;
- a locking-arm with an unlocked position allowing said collar and said driveshaft to rotate in said first direction and a locked position preventing said collar and said driveshaft from rotating in a second direction.
A compressor comprising:
- a driveshaft;
- a compressor bull-gear attached to said driveshaft, wherein said bull-gear is rotationally fixed relative to said driveshaft;
- a power supply coupled to one end of said driveshaft, wherein said power supply provides torque to rotate said driveshaft in a first direction;
- and
- means to prevent the rotation of said driveshaft in a second direction by positively engaging said driveshaft when said power supply does not provide torque to rotate said driveshaft in said first direction.
Dependencies are inferred from the claim text.