Class 200/61.77 - Pull chain operator

Subclass of Class 200 - Electricity: circuit makers and breakers
Definition: Apparatus wherein the resilient switch has a pull chain
No. of patents: 4
Last issue date: 03/01/1988

Number	Title	Issue Date
4728928	Call switch for wet areas Call switch for use by hospital patients and staff members to summon aid in wet areas such as shower and bath areas. An actuating magnet is positioned on the front side of a waterproof panel for controlling the operation of electronic circuitry mounted in...	03/01/1988
4354119	Control station for overhead mounting The control station comprises an enclosure having two terminal blocks disposed therein. Each terminal block has a set or normally opened and normally closed contacts which are mechanically interlocked and movable into an open and closed position respectiv...	10/12/1982
4205305	Burglar alarm A burglar alarm provided with a housing which contains a bell assembly and a battery compartment connected in series with a switch assembly having a linearly movable element which can be displaced a predetermined threshold distance by a chain extending to...	05/27/1980
4124847	Door alarm system A door switch is mounted on a door and has a switch arm coupled to the door frame. The door switch is open when the door is closed and is moved to closed position when the door is opened at least approximately 35°. Electrical conductors electrically conn...	11/07/1978

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