Decluthable manual override gearbox
AssigneeKinetrol Limited
InventorRonald S Spangenberg
Life of this patent
Estimating the term…
Abstract
A declutchable manual override gearbox, comprising a casing, and a drive shaft mounted for rotation within the casing. The drive shaft has an input end and an output end, the input end of the drive shaft adapted to engage the output of a rotary actuator and the output end of the drive shaft adapted for attachment to a device or mechanism, for example the drive linkage for a damper valve, to be driven by the actuator. A manual override is provided for manually rotating the drive shaft, the gearbox also including a clutch arrangment for selectively rendering the manual override inoperative. Attachments associated with a base portion of the casing enable mounting of the gearbox on an underlying support stand.
Claims20
A declutchable manual override gearbox, comprising:
- a casing, said casing including a generally planar casing base;
- a drive shaft mounted for rotation within said casing, said drive shaft having an input end, an output end, and an axis of rotation, said input end of said drive shaft adapted to engage an output of a rotary actuator and said output end of said drive shaft adapted for attachment to a device or mechanism to be driven by the actuator;
- manual override means for manually rotating said drive shaft;
- means for selectively rendering said manual override means inoperative;
- and
- means associated with said generally planar casing base for mounting said gearbox on an underlying support stand with said generally planar casing base being parallel to said axis of rotation of said drive shaft.
A drive arrangement for a device including a rotary actuator, a declutchable manual override gearbox for driving the rotary actuator, and a support stand on which said gearbox is supported, said gearbox comprising:
- a casing said casing having a base portion;
- a drive shaft mounted for rotation within said casing, said drive shaft having an input end, an output end, and an axis of rotation, said input end of said drive shaft engaging an output of the rotary actuator and said output end of said drive shaft adapted for attachment to the device to be driven by the rotary actuator;
- manual override means for manually rotating the drive shaft;
- means for selectively rendering the manual override means inoperative;
- and
- means associated with said base portion of said casing for mounting said gearbox on the support stand, said base portion being generally planar and parallel to said axis of rotation of said drive shaft.
Dependencies are inferred from the claim text.