Electricity: circuit makers and breakers – Liquid contact – Time delay
Patent
1976-06-25
1979-05-15
Tudor, Harold J.
Electricity: circuit makers and breakers
Liquid contact
Time delay
200 6178, 200277, H01H 312
Patent
active
041549970
ABSTRACT:
A pushbutton switch having an extremely small size for its number of contacts and capability. The switch has a tubular insulating housing with the snap-in pushbutton non-rotatably keyed in and extending through the upper reduced bushing end thereof for longitudinal reciprocal movement. Bifurcated spring contacts are molded into a snap-in base and extend upwardly therefrom into the housing. A ring-shaped common terminal is snap-in attached to the base before snap-in assembly thereof in the housing. A cylindrical bar movable contact guided in grooves in the housing is snap-in assembled between tabs in the bifurcated inner end of the snap-in pushbutton and keeps the snap-in tabs spread apart to prevent removal of the pushbutton from the housing. A helical return spring lines the walls of the housing and is compressed between the common terminal and the ends of the movable contact bar to act as both a return spring and as a connector. A tactile tongue integral with the pushbutton acts on the housing to provide operating position "feel" to enable the user to sense when the contacts close.
REFERENCES:
patent: 2606980 (1952-08-01), Woofter
patent: 3098141 (1963-07-01), Wintriss
patent: 3145270 (1964-08-01), Brown
patent: 3597564 (1971-08-01), Lewis
patent: 3736397 (1973-05-01), Pedersen
patent: 3773997 (1973-11-01), Evans
patent: 3883705 (1975-05-01), Sebastian
patent: 3895198 (1975-07-01), Piber
patent: 3934104 (1976-01-01), Stout
Grebner Stuart W.
Woodard Tony O.
Cutler-Hammer, Inc.
Tudor Harold J.
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