Fluid device having interchangeable displacement control means

Expansible chamber devices – Displacement control of plural cylinders arranged in... – Parallel cylinders

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417222, 91506, F01B 1304, F04B 126

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active

RE0324035

ABSTRACT:
A fluid device of the axial piston type having high and low pressure operating passages, one of which may be an inlet and the other an outlet depending upon the pumping or motoring function of the device and the direction of rotation. The fluid device, which is of the variable displacement type, has a rotatable cylinder barrel with one end of each of a plurality of pistons disposed for reciprocation within cylinder bores at one end of the cylinder barrel, and cylinder ports successively communicating each of the cylinder bores with arcuate inlet and outlet passages formed in a valving face disposed at the opposite end of the cylinder barrel. The other ends of the pistons engage a pivotably mounted thrust plate adapted to impart a reciprocal movement to the pistons within the cylinder bores as the cylinder barrel is rotated. In one example of the invention, the thrust plate is provided with a coupling mechanism adapted to be operated by any one of a plurality of interchangeable displacement control mechanisms which vary the inclination of the thrust plate with respect to the axis of rotation of the cylinder barrel and thus the amount of reciprocal movement of the pistons within the cylinder barrel. The device is adapted to be converted into a manifold system adapted to accommodate a plurality of valves with a minimum of external fluid conduits.

REFERENCES:
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Lucas-Rotax Pump Model IP-1000 (1961) as described in Depositions of Ellis Born and Willard Baker (Exhibits 71-74) in Civil Action No. 972547 (E.D. Mich.).
Defendant's Deposition Exhibit 52-C (Abex-Denison Marketing Bulletin P-4-C for Series 700 pump).

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