US PATENT SUBCLASS 92 / 146
PLURAL UNITARILY MOUNTED CYLINDERS OR FRAME THEREFOR (161)


Current as of: June, 1999
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92 /   HD   EXPANSIBLE CHAMBER DEVICES

146PLURAL UNITARILY MOUNTED CYLINDERS OR FRAME THEREFOR (161) {2}
147  DF  .~> With casing or support for rotary shaft {3}
151  DF  .~> Coaxial cylinders (150) {1}


DEFINITION

Classification: 92/146

(under the class definition) Apparatus comprising (1) two or more cylinders adapted to receive reciprocatory working members, said cylinders being rigidly secured together in a unitary structure, or (2) a frame or support having means associated therewith for rigidly securing two or more cylinders together.

(1) Note. A single axially extending hollow tubular element provided with a fixed partition for dividing the same into two distinct chambers is included under this definition, also included under this definition is a single axially extending hollow element having portions along its length of different cross-sectional areas which portions form separate working chambers. However, a single axially extending hollow tubular element of uniform diameter in which the sole means for dividing the same into two chambers is a reciprocatory working member is not considered to constitute two or more cylinders for this subclass and is excluded. Such structure is classified below on other features.

(2) Note. Class 92 excludes multiple expansion type motors and multistage pumps even if no valving is claimed if the claims do include the fluid connection between stages of the motor pump.

SEE OR SEARCH THIS CLASS, SUBCLASS:

56+, for a plurality of unitarily mounted rotating cylinders.

61+, for relatively movable working members positioned in plural unitarily mounted cylinders.

161, for a support or frame for a single cylinder. SEE OR SEARCH CLASS

91, Motors: Expansible Chamber Type,

152+, for multiple expansion type motors and subclasses 508+ for an expansible chamber type motor having a plurality of

working members.

123, Internal-Combustion Engines,

52.1+, for an internal combustion engine having a plurality of unitarily mounted cylinders, subclass 195 for a frame construction for an internal combustion engine having a plurality of unitarily mounted cylinders.

180, Motor Vehicles,

55+, for a motor vehicle having its motor mounted partly or wholly on the vehicle's lower running gear; subclass 63 for a motor vehicle having its motor mounted on the vehicle's body or body frame, connected to the vehicle's rear axle, and movable with the axle relative to the body or body frame; subclasses 291+ for a motor vehicle having a specific motor-to-body-frame relationship; and subclass 312 for a motor vehicle having a frame which is provided with structure adapted to receive or support a motor, a change-speed gearing, or some other element of the vehicle's power train.

417, Pumps,

244+, for pumps having successive stages.