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US 5,214,972 AGranted
Fault-tolerant linear electromechanical actuator
AssigneeAlliedSignal Aerospace
InventorsLowell L. V. Larson, Richard K. Larsen
Life of this patent
Estimating the term…
Abstract
A linear electromechanical actuator includes back-to-back screw-type actuators whose screw nuts are secured together. During operation, the leadscrew of one screw-type actuator is rotated while the leadscrew of the other screw-type actuator is locked.
Claims12
An actuator, comprising:
- first and second leadscrews arranged back-to-back;
- first and second housings surrounding said first and second leadscrews, said first and second leadscrews being rotatably mounted to said first and second housings;
- and
- sleeve means for sliding between and within said first and second housings, a first end of said sleeve means threadedly engaging said first leadscrew and a second end of said sleeve means threadedly engaging said second leadscrew, wherein said actuator is operated by rotating one leadscrew and locking the other leadscrew.
1 more element
An actuator, comprising:
- first and second leadscrews arranged back-to-back;
- first and second nuts threadedly engaging said first and second leadscrews, respectively;
- first and second housings surrounding said first and second leadscrews, said first and second leadscrews being rotatably mounted to said first and second housings;
- and
- a collar splined to said first and second housings for sliding between and within said first and second housings, a first end of said collar being affixed to said first nut and a second end of said collar being affixed to said second nut, wherein said actuator is operated by rotating one leadscrew and locking the other leadscrew.
2 more elements
Dependencies are inferred from the claim text.