US PATENT SUBCLASS 100 / 269.21
.~.~.~ Gasket or packing around piston

Current as of: June, 1999
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100 /   HD   PRESSES

214  DF  RECIPROCATING PRESS CONSTRUCTION {26}
269.01  DF  .~ Fluid pressure actuation {9}
269.18  DF  .~.~ Rod, piston, or cylinder detail {3}
269.21.~.~.~ Gasket or packing around piston

DEFINITION

Classification: 100/269.21

Gasket or packing around piston:

(under subclass 269.18) Apparatus including a sealing means surrounding the piston which is intended to act between the piston and pressure cylinder wall.

SEE OR SEARCH CLASS

277, Seal for a Joint or Juncture,

434+, for a piston ring or piston ring expander or seat therefor, or subclasses 634+ for a flexible sleeve, boot, or diaphragm.