(under the class definition) Device comprising a closure supported for movement and provided with a position holder which is rendered operative by breakage or failure of the closure supporting means to prevent falling of the closure.
SEE OR SEARCH THIS CLASS, SUBCLASS:
279+, for an operator and a latch release interrelated to the operator, so that actuation effects both a disengagement of the latch and a movement of the closure.
449+, for a latch or locking means for a reciprocating closure.
