US PATENT SUBCLASS 92 / 153
WITH LUBRICATING MEANS

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

153WITH LUBRICATING MEANS {5}
154  DF  .~> Lubricant entrained by working fluid
155  DF  .~> Portion of expansible chamber device includes solid lubricating material
156  DF  .~> Valve means in lubricant passage
157  DF  .~> Lubricant passage extends axially through articulated piston rod
158  DF  .~> Piston has lubricant retaining or conducting means {2}

DEFINITION

Classification: 92/153

(under the class definition) Apparatus including (1) means to, apply, direct or conduct a substance to a location between relatively movable parts of an expansible chamber device designed to reduce the friction between said parts or (2) means forming a part of an expansible chamber device, which means is formed of a material which is normally applied between relatively movable elements to reduce the friction between said elements.

(1) Note. Included under this definition are expansible chamber device parts, such as for example, a piston formed of Teflon, mica or a material having a high graphite content or other material known to be self-lubricating.

SEE OR SEARCH THIS CLASS, SUBCLASS:

141, for a separable deflector plate or baffle on a working member for deflecting lubricant from a portion of the expansible chamber device.

SEE OR SEARCH CLASS

91, Motors: Expansible Chamber Type, 46, for interrelated control of motive fluid and lubricant.

123, Internal-Combustion Engines,

196, for lubricating means for an internal combustion engine.

184, Lubrication, appropriate subclasses for lubrication of general utility, and particularly

18+, for lubricating means for an engine cylinder. Class 184 takes a nominal cylinder and piston having lubricating means therefor. For a more detailed statement of the line between Class 184 and Class 92, see section III of the class definition.