US PATENT SUBCLASS 91 / 6.5
.~ Three or more cylinders arranged in parallel, radial or conical relationship with rotary transmission axis


Current as of: June, 1999
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91 /   HD   MOTORS: EXPANSIBLE CHAMBER TYPE

6  DF  FLUID SUPPLY THROUGH DIVERSE PATHS TO SINGLE EXPANSIBLE CHAMBER {12}
6.5.~ Three or more cylinders arranged in parallel, radial or conical relationship with rotary transmission axis


DEFINITION

Classification: 91/6.5

(under subclass 6) Apparatus comprising three or more cylinders each cylinder being provided with relatively reciprocating piston (includes diaphragm) to thereby form a plurality of working chambers, the cylinders or a transmission element in common operative engagement with said cylinders or pistons being adapted to rotate about a fixed axis; said cylinders being physically arranged in a manner such that their longitudinal axis either (1) intersect at a common point or (2) extend parallel to said axis of rotation,

and in which motive fluid is supplied to at least one of said cylinders through diverse flow paths.

(1) Note. Plural cylinder motors of the above defined type in which each cylinder receives motive fluid through different supply paths for the sole purpose of causing more than one expansion and contraction cycle of the working chambers during each complete revolution of 360 deg. of the cylinders of rotary transmission are not intended to form subject matter under this definition and are therefor excluded hereunder.

(2) Note. See note in Class 417, Pumps, subclass 269 for a statement of the line between this class and Class 417 regarding plural cylinder devices of the above defined type.