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US 3,977,302 AGranted
Fluid motor with releasable coupling
OwnerKarl Eickmanninventor
Life of this patent
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Abstract
An annular rotor element is rotatably mounted in a housing and has a center opening in which a shaft element is journalled with annular clearance. An arrangement is provided for coupling the elements in motion-transmitting relationship in automatic response to relative rotation in one direction, and for uncoupling the elements in automatic response to relative rotation of the elements in an opposite direction.
Claims6
A hydraulic radial-piston fluid motor, comprising a housing;
- two axially aligned annular rotor elements independently rotatably mounted in said housing and each having a central axial opening and radial cylinder bores;
- reciprocable pistons located in said cylinder bores;
- first passage means for supplying fluid to and removing it from the cylinder bores of one of said rotor elements;
- second passage means separate from said first means for suppling fluid to and removing it from the cylinder bores of the other of said rotor elements;
- a shaft element journalled in said housing and extending with annular clearance through said center openings;
- and first and second coupling means each associated with one of said rotor elements for individually coupling the respective rotor element with said shaft element in motion-transmitting relationship in automatic response to relative rotation of the respective rotor element and said shaft element in one direction and for uncoupling in automatic response to said relative rotation in an opposite direction.
3 more elements
Dependencies are inferred from the claim text.