US PATENT SUBCLASS 92 / 246
.~.~ Metallic lip


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

172  DF  PISTON {19}
240  DF  .~ Side wall portion includes peripheral axially extending flexible lip {4}
246.~.~ Metallic lip


DEFINITION

Classification: 92/246

(under subclass 240) Apparatus in which the flexible lip is formed of metallic material.

(1) Note. A laminated lip forming member including layers of metallic and nonmetallic material and in which the layer of metallic material forms the outer periphery of the lip, which is adapted to contact the working chamber wall is included under this definition.

SEE OR SEARCH THIS CLASS, SUBCLASS:

192, for a piston having a plurality of integrally formed radially extending resilient metallic sealing tongues on the

side wall portion thereof.

241, for a nonmetallic lip provided with embedded reinforcing means, and in which the reinforcing means may be a metallic element.