US PATENT SUBCLASS 285 / 311
.~.~.~ Dead center lever systems (self-locking)

Current as of: June, 1999
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285 /   HD   PIPE JOINTS OR COUPLINGS

305  DF  ESSENTIAL CATCH {7}
308  DF  .~ With manipulator {4}
309  DF  .~.~ With means to increase contact pressure (e.g., tightener) {3}
311.~.~.~ Dead center lever systems (self-locking)

DEFINITION

Classification: 285/311

(under subclass 309) Subject matter comprising a lever system that is self-locking in that a pivotal connection passes dead center.

SEE OR SEARCH CLASS

24, Buckles, Buttons, Clasps, etc.,

270+, for self-locking tighteners in hose clamps.