US PATENT SUBCLASS 92 / 165 R
WITH GUIDE OR SEAL ON CYLINDER END PORTION FOR PISTON OR MEMBER MOVED BY PISTON

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

165 RWITH GUIDE OR SEAL ON CYLINDER END PORTION FOR PISTON OR MEMBER MOVED BY PISTON {4}
166  DF  .~> Additional guide is spaced chamber end wall
167  DF  .~> Guide movable laterally
168  DF  .~> Non-metallic seal means between piston or member and end portion
165 PR  DF  .~> Prevent rotation

Unofficial Alpha Subclasses: R PR

DEFINITION

Classification: 92/165

(under the class definition) Apparatus including means formed on an end portion of a cylinder, and being engageable with the piston or a member moved by the piston, said means being effective to (1) constrain said piston or member to a predetermined path of movement or (2) provide a sealing means between the inside of the cylinder and the outside thereof.

SEE OR SEARCH THIS CLASS, SUBCLASS:

88, for a self sealing opening in a longitudinal wall of a working chamber for forming a guide for a working member portion.

SEE OR SEARCH CLASS

384, Bearings,

7+, for linear bearings. Class 384, Bearings takes a nominally claimed cylinder and end wall therein slidably engaging a rod to guide the same, however, where details of the piston are included in the claim, classification is in this class (92).