(under subclass 333) Device provided with a powered means, other than a mere spring, to actuate the closure.
SEE OR SEARCH THIS CLASS, SUBCLASS:
18, for a motor operated control for a jail type closure.
32, for a motor operated closure in which the drive is energized by an initial manual displacement of the closure.
118, for motor driven closures interconnected for opposed, concurrent movement.
137, for a combined fluid motor operator and closure check. 138, for a motor driven closure having means to vary the closure speed or range of movement.
139, for a closure optionally moved, by a motor or by manual means.
167, for a motor operated window carried by a swingably mounted door in which the power conduit for the motor extends across the hinge of the door.
199, for a motor operated closure which moves from a vertical to a horizontal overhead position.
264, for an electric motor operated closure, activated by a pedal or treadle switch.
265, for a fluid motor operated closure, activated by a pedal or treadle valve.
280, for a closure latch release interconnected with a motor drive for the closure.
340, for a motor driven operating lever which swings about an axis parallel to that of the closure.
349, for a motor drive concealed within a housing for the closure.
358, for a motor mounted on and movable with the closure.
SEE OR SEARCH CLASS
74, Machine Element or Mechanism, appropriate subclasses, for a nominally recited motor moving a nominally recited load (closure) through a force transmitting means of that class. 91, Motors: Expansible Chamber Type, appropriate subclasses, for a motor of that class moving a nominally recited closure (load), and see (2) Note to 1 Class Definition of that class for the line.
92, Expansible Chamber Devices, appropriate subclasses, for a motor of that class moving a nominally recited closure (load), and see Lines With Other Classes of the Class Definition of that class (92) for the line.
110, Furnaces,
177, for a motor operated furnace door.
246, Railway Switched and Signals, for closures such as gates combined with railway switches or signals, especially
261, for a fluid- motor actuated railway gate and subclass 272 for a vehicle energy actuated gate using a fluid transmission.
303, Fluid-Pressure and Analogous Brake Systems,
6.1, for a fluid-pressure brake for controlling a fluid motor which operates a closure.
318, Electricity: Motive Power Systems,
3+, for a nominally recited closure (load) having an electric motor drive combined with a control for the motor.
418, Rotary Expansible Chamber Devices, for a rotary expansible chamber device moving a nominally recited closure (load) and see Lines With Other Classes of the Class Definition to Class 91 for the line between Classes 91 and 49, the line between Classes 49 and 418 being the same.
