US PATENT SUBCLASS 227 / 152
.~.~ Means to clamp work

Current as of: June, 1999
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227 /   HD   ELONGATED-MEMBER-DRIVING APPARATUS

140  DF  WITH MEANS TO SUPPORT MEMBER AND/OR WORK RELATIVE TO DRIVER {11}
151  DF  .~ Work immobilizer {1}
152.~.~ Means to clamp work {1}
153  DF  .~.~.~> Interrelated with driver-actuation

DEFINITION

Classification: 227/152

(under subclass 151) Device wherein said structure comprises a plurality of opposed 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.