US PATENT SUBCLASS 123 / 188.1
VALVE

Current as of: June, 1999
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123 /   HD   INTERNAL-COMBUSTION ENGINES

188.1VALVE {10}
189  DF  .~> Detachable
188.14  DF  .~> Valve head cooperates with manifold
188.4  DF  .~> Reciprocating valve {3}
190.1  DF  .~> Rotary {7}
188.6  DF  .~> Packing
188.7  DF  .~> Combustion improving accessory
188.8  DF  .~> Valve seat relation
188.9  DF  .~> Guide, lubricant, or coolant
188.11  DF  .~> Wear feature {1}
188.17  DF  .~> Having actuation springs concentric with valve stem

DEFINITION

Classification: 123/188.1

VALVE:

(under the class definition) Apparatus relating to either (1) the intake, exhaust, or fuel valve of an internal-combustion engine having a stationary opening (i.e., seat) and moving closure (i.e., head) or (2), a component thereof (e.g., a valve-seat), or (3), an adjunct accessory (e.g., supply conduit for valve) solely for use with the supply, exhaust or fuel valve of an internal combustion engine.

SEE OR SEARCH THIS CLASS, SUBCLASS:

41.16, for valve having coolant sealed therein.

41.34, for internal cooling of moving valve parts.

41.76+, for valve seats and guide with cooling means.

144+, for supply or exhaust valves or a single valve controlling both the supply and exhaust ports of the engine, in combination with a flame igniting device.

434+, for valves used in connection with charge-forming devices.

SEE OR SEARCH CLASS 148, Metal Treatment, appropriate subclasses for valves

claimed broadly by name only and defined significantly or broadly solely by their metal or alloy compositions and including a specific Class 148 treatment of the metal or alloy, or for products distinguished only by the internal structure or characteristics of the metals, metallic compositions or alloys comprising such structures.

251, Valves and Valve Actuation, particularly

251+, for cam actuated valves.

420, Alloys or Metallic Compositions, appropriate subclasses for valves claimed by name only and defined solely by their metal or alloy composition.

428, Stock Material or Miscellaneous Articles,

544+, for valve element or adjunct having only nominally claimed structure, that is, one insufficiently defined in its ultimate use form, comprised all of metal or having metal components.