US PATENT SUBCLASS 277 / FOR 214
RIBBED CONTACT SURFACE (277/207 R)

Current as of: June, 1999
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277 /   HD   SEAL FOR A JOINT OR JUNCTURE

FOR 214RIBBED CONTACT SURFACE (277/207 R) {3}
FOR 215  DF  .~> Axially spaced (277/208) {1}
FOR 218  DF  .~> Opposite surfaces (277/211)
FOR 219  DD  .~> Pipe joints or connections (277/207 A)

DEFINITION

Classification: 277/FOR.214

Foreign art collections comprising a packing element having a plurality of ribs extending therefrom adapted for contact with another member forming a sealing surface therewith.