(under the class definition) Device provided with an operator which engages to impart an initial opening movement to the closure and then disengages to permit the opening to be concluded manually or by another operator.
SEE OR SEARCH THIS CLASS, SUBCLASS:
32, for a motor drive for a closure which is energized by initial manual movement of the closure.
139, for a closure optionally moved manually or by a motor.
209, for an operator which imparts initial movement transverse to the plane of translation of a closure.
234, for an operator which initially moves the closure vertically to permit horizontal travel. 255, for an operator which first moves a closure vertically to permit horizontal swinging.
275, for an operator requiring a plurality of actuations to effect closure movements.
SEE OR SEARCH CLASS
292, Closure Fasteners, appropriate subclasses for devices for starting a closure open, or drawing it from a substantially closed to a fully closed position, wherein such operation is accomplished by cooperating surfaces on the latch bolts and keepers, which effect this operation during movement of the bolts into or out of latching condition relative to the keepers.
454, Ventilation,
89, for a starter type operator for an ice-bunker closure, wherein the operator has means to prop the closure in ventilating position.
