US PATENT SUBCLASS 91 / 491
.~ Radially disposed cylinders

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

472  DF  THREE OR MORE CYLINDERS ARRANGED IN PARALLEL RADIAL OR CONICAL RELATIONSHIP WITH ROTARY TRANSMISSION AXIS {10}
491.~ Radially disposed cylinders {6}
492  DF  .~.~> Plural banks
493  DF  .~.~> Rigidly connected pistons reciprocate within rigidly connected cylinders
494  DF  .~.~> Cylinders and pistons form or coact with respective common elements having limited relative rotary movement {1}
496  DF  .~.~> Positive bidirectional drive or reciprocating members
497  DF  .~.~> Stroke control
498  DF  .~.~> Cooperating valve ports in cylinder and relatively movable central member

DEFINITION

Classification: 91/491

(under subclass 472) Apparatus in which the longitudinal axes of said plural cylinders intersect at a common point from which they radiate and are contained within a common plane perpendicular to said axis of rotation.

(1) Note. In some instances, the longitudinal axes of the cylinders move relative to the axis of rotation and devices of this type are intended to be included hereunder if the individual cylinder axes pass through the common point in at least one position of their movement.

SEE OR SEARCH CLASS

73, Measuring and Testing,

247, for meters having two or more radially arranged cylinders.

74, Machine Element or Mechanism, appropriate subclasses, for mechanical motion fluid valving or porting claimed and see especially

22, for apparatus for converting rotary motion to reciprocating and rotary motion, subclass 51, for apparatus employing a crank and multiple pitmans for converting rotary motion to or from reciprocating or oscillating motion and subclass 55, for apparatus employing a cam slide for converting rotary motion to or from reciprocating or oscillating motion. 92, Expansible Chamber Devices, appropriate subclasses, for expansible chamber devices having plural radial cylinders in which there is no valving of motive fluid claimed and see especially

58, for plural rotating cylinders in which the axes at a common point, subclasses 72+, for relatively movable working members interconnected with a common rotatable shaft and in which the shaft axis is intersected by the axis of the working members and subclass 148, for three or more unitarily mounted, radially arranged cylinders.

417, Pumps,

273, for pumps having three or more cylinders arranged in radial relationship with a rotary transmission axis.