(under subclass 452) Device wherein means is provided which tends to (a) maintain the jaws in, or to return them to, a definite position; or (b) enable the jaws to remain in their last position if not subjected to operating force or resistance of work.
(1) Note. Includes a clamp with cantilever spring jaws or jaw-carrying arm.
(2) Note. A biased or counterbalanced clamp, if actuated manually by direct hand pressure or through linkage, or by conventional power means, will be classified here rather than in "manual" or "power" actuation subclasses.
