Electricity: circuit makers and breakers – Switch activation inhibitor – Actuator locking device
Patent
1994-08-10
1995-07-11
Fetsuga, Robert M.
Electricity: circuit makers and breakers
Switch activation inhibitor
Actuator locking device
200 4316, 200 4319, 70202, 70DIG30, H01H 928
Patent
active
054323088
ABSTRACT:
A lockout strip for an electrical switch of the type having a housing, an opening in the front face of the housing, an operating lever with lugs at its outer end extending out of the opening in the housing and stop surfaces at opposite ends of the opening in the housing. The stop surfaces define the "on" and "off" conditions of the switch. The lockout strip is formed of a thin, rectilinear piece of relatively stiff material, preferably plastic. An irregular shaped cutout is formed in the strip. The cutout has a central, rectangular portion of sufficient width to fit over the lever and its laterally extending lugs so as to allow the strip to be positioned against the front face of the switch housing. The cutout also has a narrow portion located longitudinally adjacent the central portion with sufficient width to receive the operating lever but not sufficiently wide to clear its lugs. This narrower cutout is inside lateral shoulders which fit under and engage the lugs of the lever. A projecting stop is formed on the bottom face of the strip so as to fit into the housing opening and engage a stop surface when the narrower cutout contacts the operating lever to thereby hold the lever in its "off" position to prevent the strip from being lifted off or slide out from beneath the lugs.
REFERENCES:
patent: 2560624 (1951-07-01), Bartlett
patent: 3214530 (1965-10-01), Tharp et al.
patent: 3291924 (1966-12-01), Tharp
patent: 3327496 (1967-06-01), De Fusco
patent: 3667259 (1972-06-01), Reque et al.
patent: 4085599 (1978-04-01), Fischer et al.
patent: 5020342 (1991-06-01), Doan et al.
Fetsuga Robert M.
Walczak David J.
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