US PATENT SUBCLASS 83 / 461
.~.~ Liquid pressure actuating means

Current as of: June, 1999
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83 /   HD   CUTTING

451  DF  WITH WORK IMMOBILIZER {3}
452  DF  .~ Means to clamp work {11}
461.~.~ Liquid pressure actuating means

DEFINITION

Classification: 83/461

(under subclass 452) Device wherein the clamp is driven by

fluid pressure means, without specific provision for yieldability or force-limiting in the drive train, the fluid not being resilient or yieldable, per se.

(1) Note. A plain hydraulic drive is included here. A compressed air drive is inherently yieldable and so comprises subject matter of subclass 460.

SEE OR SEARCH THIS CLASS, SUBCLASS:

460, and see (1) Note above.