US PATENT SUBCLASS 92 / 261
MISCELLANEOUS (E.G., CRANKCASE)


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

261MISCELLANEOUS (E.G., CRANKCASE)


DEFINITION

Classification: 92/261

(under the class definition) Subject matter not provided for in other subclasses.

(1) Note. For example this subclass includes a housing for a mechanical motion converting linkage or transmission disclosed as being interconnected with an expansible chamber device, and not classifiable elsewhere.

SEE OR SEARCH THIS CLASS, SUBCLASS:

147+, for a housing or support for a rotatable shaft combined with a plurality of unitarily mounted cylinders.

161, for a support or frame for an expansible chamber device which may include a housing or support for a rotatable shaft.

SEE OR SEARCH CLASS 74, Machine Element or Mechanism, appropriate subclasses for a machine element or mechanism enclosed within a casing or housing. Class 74 takes a housing for a crankshaft, or other Class 74 element where some detail of the crankshaft or other element is set forth in the claim. However the claiming of a gear as part of the device enclosed within the casing will effect classification in Class 74 even though no detail of the gear is set forth. Class 92 takes a casing for a shaft or other Class 74 element, where disclosed as being associated with an expansible chamber device, either, per se, or where such element is nominally claimed, unless such structure is classifiable elsewhere on other features.

123, Internal-Combustion Engines,

195, for a crankcase for an internal combustion engine.

384, Bearings,

429+, for a crankshaft plain bearing and subclasses 457+ for a crankshaft antifriction bearing which may include a housing or casing for the shaft. The nominal recitation of the crankshaft will not preclude placement in Class 384.