(under the class definition) Device including means for holding a closure open or for maintaining a closing device inoperative, said means including an element disabled at a predetermined temperature, or rate of change thereof, to release the closure or closer for movement.
(1) Note. The means for holding the closure open are usually associated with a closing device, so that release of the holder permits the device to act.
SEE OR SEARCH CLASS
49, Movable or Removable Closures,
7+, for a thermally released check or closer combined with a closure of that class, and see the search notes thereto for the loci of other thermally released devices. This class (16) takes patents which claim only enough of the closure or its supporting frame as is necessary to mount the check or closer.
