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US 5,109,754 AGranted
High torque low speed motor
OwnerEdwin L. Shawinventor
Life of this patent
Estimating the term…
Abstract
A high torque low speed motor has a nutating assembly driven by a hydraulic or an electric actuator. The nutator assembly drivingly connects to an output shaft through a gear train. Because of a difference in the number of teeth between a gear on the output shaft and a gear on the nutating assembly, the output shaft is driven at a differential ratio as the nutator assembly is driven.
Claims8
A high torque fluid motor which comprises:
- a housing;
- a plurality of cylinder bores formed in said housing;
- an angle shaft having an offset portion rotatably mounted within said housing;
- a nutator assembly rotatably mounted on said offset portion of said angle shaft;
- a reaction surface formed on said nutator assembly;
- a plurality of pistons mounted in said cylinder bores and pivotally affixed to said reaction surface;
- a first bevel gear affixed to said housing;
- a second bevel gear mounted on said nutator assembly which meshes with said first bevel gear;
- an angle gear affixed to said nutator assembly;
- an output shaft rotatably mounted in said housing having a shaft gear which meshes with said angle gear;
- a fluid inlet port;
- a fluid exhaust port;
- valve means for directing fluid from said inlet port to said cylinders and from said cylinders to said outlet port to cause said pistons to be biased sequentially against said reaction surface to force said nutator assembly to nutate and cause said shaft gear and output shaft to rotate.
10 more elements
Dependencies are inferred from the claim text.