US PATENT SUBCLASS 83 / 452
.~ Means to clamp work

Current as of: June, 1999
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83 /   HD   CUTTING

451  DF  WITH WORK IMMOBILIZER {3}
452.~ Means to clamp work {11}
453  DF  .~.~> Combined with, peculiarly related to, other element {3}
457  DF  .~.~> With means providing for plural steps in clamping stroke
458  DF  .~.~> With equalizer or self-aligning jaw
459  DF  .~.~> With biasing or counterbalancing means
460  DF  .~.~> Clamp driven by yieldable means
461  DF  .~.~> Liquid pressure actuating means
462  DF  .~.~> Including means to retain clamp jaw in position
463  DF  .~.~> Self-locking drive means
464  DF  .~.~> Manually actuated drive means
465  DF  .~.~> Including clamping face of specific structure
466  DF  .~.~> With means to adjust clamp position or stroke

DEFINITION

Classification: 83/452

(under subclass 451) Device which comprises a plurality of opposed solid jaws or surface elements which are made effective, by movement of one or more of said jaws or surface elements, to grip the work frictionally and hold it in a desired position fixedly with respect to a tool station.

(1) Note. To be classified in this subclass, a moving cutting tool must be claimed. If only a work holder is claimed, or a work holder and stationary cutter in combination, the patent will be classified in Class 269, Work Holders.

(2) Note. A clamp must be actuatable by the application of energy either to open it or to close it. (It is not a passive yielding guide or snubbing device).

(3) Note. A device which is described as serving as a "stripper" as well as a clamp or hold down, will be found in subclasses 111+.

SEE OR SEARCH THIS CLASS, SUBCLASS:

111+, and see (3) Note above.

277, for a feed gripper associated with a machine which cuts work during dwell of work-feed. 375+, for a work clamp which is interrelated with tool actuating means.

435.11+, for a cutting device with means to convey work and with a work gripper, wherein the cut is made parallel to and during work movement.

437.1+, for a cutting device with means to convey work and

with a work gripper, generally.

447, and 450, for a "holddown" opposed to a work-supporting table but not actuated positively to clamp the work.

567, for means to bind work against a work-moving tool.

SEE OR SEARCH CLASS

269, Work Holders, appropriate subclasses particularly

86+, for a work holder provided with a clamp or clamps; and see (1) Note, above.