(under the class definition) Device comprising a means to store potential energy upon the movement of a closure in one direction, and a means to hold the closure in that direction against return movement, and a device to release the closure from the holding means to permit the stored energy to return the closure to its beginning position.
SEE OR SEARCH THIS CLASS, SUBCLASS:
1+, for a latch responsive to heat (e.g., fusible) to release a closure for movement by movement stored energy.
21, for a latch responsive to a fluid, such as water, to release a closure for movement by movement stored energy.
29, for a time controlled latch for releasing a closure for movement by movement stored energy.
110+, for movement stored energy which acts on a lever interconnecting concurrently swinging closures. 236+, for a latched closure having a multidirectional opening movement, one component of which is against the force of gravity, so that when released, the closure returns to closed position.
273+, for a pedal actuated, load maintained, self-returning closure.
324+, for a closure having energy storing means as defined above combined with an operator for moving it to an energy storing position.
364, for a bump actuated latch release.
386, for biasing means for a swinging closure.
394, for a latch or lock for a swinging closure.
449, for a latch or lock for a sliding closure.
SEE OR SEARCH CLASS
74, Machine Element or Mechanism,
2+, for a trip mechanism to release a closure latch to permit the closure to move.
