US PATENT SUBCLASS 92 / 61
RELATIVELY MOVABLE WORKING MEMBERS

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

61RELATIVELY MOVABLE WORKING MEMBERS {8}
62  DF  .~> First working member moves second coaxial working member through separating abutment surfaces {1}
64  DF  .~> One a flexible wall type
65  DF  .~> Rigid stem on first working member portion extends through second working member
66  DF  .~> Moving cylinders
67  DF  .~> Oscillating working members
68  DF  .~> Interconnected with common rotatable shaft {3}
75  DF  .~> Oppositely movable walls of common chamber (50) (69)
76  DF  .~> Interconnected by linkage having relatively movable members

DEFINITION

Classification: 92/61

(under the class definition) Apparatus comprising two or more working members which are movably related to each other.

(1) Note. A fluid responsive element which is movable relative to the working member, of an expansible chamber device and which is utilized to perform work solely for use by a part of the expansible chamber device, such as for example, to adjust a part of the working member, or to effect a seal or a lubricating means between expansible chamber device parts is not considered as a working member movable relative to the working member of the expansible chamber device being acted upon or modified by such element, and is excluded from this subclass. 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 or pump.

SEE OR SEARCH THIS CLASS, SUBCLASS:

2, for relatively movable working members which reciprocate and rotate a common power transmission element.

28+, and the search there noted, for a working member which is movable relative to a second working member and which operates a latch or lock to secure said second working member against movement. 37+, for plural bellows type expansible chamber devices in which the several bellows are movable relative to each other.

48+, for plural flexible wall working members in which the several flexible wall working members are movable relative to each other.

52, for relatively movable concentric working members.

SEE OR SEARCH CLASS

91, Motors: Expansible Chamber Type,

152+, for multiple expansion type motors, subclasses 170+ for an expansible chamber type motor, having relatively movable working members with one controlled by, movably interconnected with or moved by another; subclasses 508+ for an expansible chamber type motor having plural working members.

123, Internal-Combustion Engines,

51, for an internal combustion engine having a plurality of pistons.

417, Pumps,

244+, for pumps having successive stages.