US PATENT SUBCLASS 277 / 300
PROCESS OF DYNAMIC SEALING

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

300PROCESS OF DYNAMIC SEALING {6}
301  DF  .~> Close proximity seal (e.g., contactless, fluent, etc.) {4}
306  DF  .~> Relatively rotatable radially extending sealing face member (e.g., face, mechanical, etc.) {1}
308  DF  .~> Contained or compressed by gland member in packing box
309  DF  .~> Peripheral radially sealing flexible projection (e.g., lip, piston cup seal, etc.)
310  DF  .~> Piston ring for internal combustion engine
311  DF  .~> Flexible ring

DEFINITION

Classification: 277/300

PROCESS OF DYNAMIC SEALING:

(under the class definition) Sealing means comprising use of the sealing means to oppose the flow of fluid at the joint or juncture between relatively movable parts and having a relatively movable relationship to at least one of the parts.

(1) Note. Relative movement between the parts need only occur at one time during the operation of the parts being sealed while maintaining sealing during movement, but such movement excludes assembly or disassembly such as the unscrewing of a packed, threaded pipe joint.

SEE OR SEARCH THIS CLASS, SUBCLASS:

312+, for a process of static sealing.

345+, for a seal between relatively movable parts (i.e., a dynamic seal).