US PATENT SUBCLASS 83 / 387
.~.~.~.~ With resilient drive element

Current as of: June, 1999
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83 /   HD   CUTTING

374  DF  INTERRELATED TOOL ACTUATING MEANS AND MEANS TO ACTUATE WORK IMMOBILIZER {2}
375  DF  .~ Work clamp {9}
385  DF  .~.~ Clamp actuating means driven by tool or tool support {1}
386  DF  .~.~.~ Clamp yieldably driven by tool or tool support {1}
387.~.~.~.~ With resilient drive element

DEFINITION

Classification: 83/387

(under subclass 386) Device in which the force-transmitting means comprises an elastic element (solid or fluid) which exhibits the characteristics of a spring throughout the expected range of forces applied thereto during normal operation of the machine.

(1) Note. The definition of this subclass is restricted to drive means which function in a springlike manner during normal or expected conditions of operation of the machine. Such means as a preloaded spring, interposed in a clamp drive train for the purpose of yielding only to relieve excessive strains during overload conditions, would not be classified here but in subclasses 386 or 388 as a yieldable drive element.

SEE OR SEARCH THIS CLASS, SUBCLASS:

386, and 388, and see (1) Note above.

389, for other examples of a clamp driven in timed relation to a tool through a resilient drive train.