US PATENT SUBCLASS 220 / 203.12
.~.~.~.~ Flexible, ringlike vent closing member (e.g., O-ring)

Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use


220 /   HD   RECEPTACLES

200  DF  CLOSURES {45}
202  DF  .~ With condition responsive vent or valve {1}
203.01  DF  .~.~ Responsive to pressure {10}
203.11  DF  .~.~.~ Flexible, resilient vent closing member {4}
203.12.~.~.~.~ Flexible, ringlike vent closing member (e.g., O-ring)

DEFINITION

Classification: 220/203.12

Flexible ringlike vent closing member (e.g., O-ring):

(under subclass 203.11) Device wherein said vent closing member comprises a resilient loop deformable in the radial or longitudinal direction in response to pressure within or without a receptacle.