Electricity: electrical systems and devices – Electrostatic capacitors – Fixed capacitor
Patent
1975-07-21
1977-04-12
Tolin, Gerald P.
Electricity: electrical systems and devices
Electrostatic capacitors
Fixed capacitor
200 50A, 200 6173, 200333, H01H 320
Patent
active
040177718
ABSTRACT:
The device safeguards switches and other electrical components controlling an electric motor, such as the motor of a blowing device for air bubbling mats in bathtubs. A casing of dielectric material is arranged to enclose an electric motor, and has a recess in its exterior wall in which are mounted motor controlling components including a master motor switch having an outwardly projecting, normally externally accessible switch operator. A cover plate of dielectric material is mounted on the exterior wall and cooperable with guiding rails or the like for sliding movement along the exterior wall. The cover plate has a first position, in which it completely cover the recess, and releases the master motor switch to close, and has a second position in which certain of the components are exposed for external access but in which the cover plate engages the switch operator of the master motor switch to maintain the master motor switch opened.
REFERENCES:
patent: 2752464 (1956-06-01), Seeger
patent: 3196877 (1965-07-01), Corbin
patent: 3233071 (1966-02-01), Buzzell
patent: 3663781 (1972-05-01), Zimmerman
patent: 3719871 (1973-03-01), Houst
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