US PATENT SUBCLASS 269 / 254 R
.~.~ Bias type (e.g., weight, spring, resilience)

Current as of: June, 1999
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269 /   HD   WORK HOLDERS

86  DF  RELATIVELY MOVABLE JAWS {25}
216  DF  .~ Means to actuate jaw(s) (i.e., apply holding force) {10}
254 R.~.~ Bias type (e.g., weight, spring, resilience) {4}
254 DF  DF  .~.~.~> Dental flask
254 D  DF  .~.~.~> Drawing board
254 CS  DF  .~.~.~> Coil spring
254 MW  DF  .~.~.~> Movable weighted member

Unofficial Alpha Subclasses: R DF D CS MW

DEFINITION

Classification: 269/254

(under subclass 216) Device including means tending to urge the jaws* into gripping relationship with the work.

(1) Note. Included here are patents to a holder with means which rely upon springs, gravity or resiliency of structural elements.

SEE OR SEARCH THIS CLASS, SUBCLASS:

157+, for patents to a holder with bias means to urge jaws away from work holding position.

SEE OR SEARCH CLASS

294, Handling: Hand and Hoist-Line Implements,

148, and 166 for a hand-held article carrier which employs a spring to retain the article on the carrier.