US PATENT SUBCLASS 277 / 501
.~.~ And magnetic bias

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

345  DF  SEAL BETWEEN RELATIVELY MOVABLE PARTS (I.E., DYNAMIC SEAL) {10}
500  DF  .~ Circumferential contact seal for other than piston {13}
501.~.~ And magnetic bias

DEFINITION

Classification: 277/501

And magnetic bias:

(under subclass 500) Dynamic, circumferential contact seal including a polar field to bias the seal.

SEE OR SEARCH THIS CLASS, SUBCLASS:

378, for a relatively rotatable, radially extending sealing face member (e.g., face, mechanical, etc.) including a magnetic axial bias therefor.

629, for a static contact seal for other than an internal combustion engine, or a pipe, conduit, or cable that uses magnetism.

SEE OR SEARCH CLASS

252, Compositions,

62.51+, for a composition useful for a magnetic purpose or a process for making the composition, not provided for elsewhere.

335, Electricity: Magnetically Operated Switches, Magnets, and Electromagnets; 209+, for a magnet or an electromagnet, configured or arranged to perform external mechanical work but does not

include the external mechanical work.