Electricity: circuit makers and breakers – Snap – Double snap
Patent
1998-08-20
2000-04-18
Gellner, Michael L.
Electricity: circuit makers and breakers
Snap
Double snap
200454, H01H 506
Patent
active
060518006
ABSTRACT:
An improved snap action or sump pump switch is disclosed which conventionally includes a housing defining a depression therein and being open on a bottom side thereof; a movable, U-shaped contact support bridge, a coiled actuator spring containing a standard pivot bushing on one end thereof and having an opposite end fitted against the bridge, and an elongated actuator arm or operating lever having a rounded end projecting into the pivot bushing and a pair of laterally projecting, cylindrically shaped ears adapted for disposition in sockets contained in and defined by the housing. Once assembled, these components are held in a stable cooperative relationship relative to one another due to the actuator ears being disposed in forwardly opening, rearwardly projecting slots defined by shoulders projecting from rear inside walls of the housing such that the compressed spring continually urges the ears of the actuator arm rearwardly against the bases of the slots. The switch components are thus easily assembled by hand or otherwise into the required cooperative relationship within the housing and do not require extraordinary means for holding them in the required relationship prior to and during placement of a cover on the housing.
REFERENCES:
patent: 4196325 (1980-04-01), Povilaitis
patent: 4196328 (1980-04-01), Ishikawa
patent: 4309149 (1982-01-01), McCombs, Jr.
patent: 4916274 (1990-04-01), Hawley et al.
patent: 5471024 (1995-11-01), Ross et al.
E.M.B. Corporation
Gellner Michael L.
Miller Jr. Maurice L.
Nguyen Nhung
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