Geometrical instruments
Patent
1983-11-22
1985-03-05
McGlynn, Joseph H.
Geometrical instruments
339157R, H01R 304
Patent
active
045027447
ABSTRACT:
In a lighting system in which each of a multiplicity of lighting fixtures has a receptable containing a multiplicity of electrical contacts, a switching cable assembly is provided. A pass-through power plug of the assembly has a housing, a stem connector projecting from the housing with a multiplicity of electrical contacts adapted to mate with complementary contacts in the fixture receptacle, a power-in receptacle mounted in the power plug housing and a power-out receptacle mounted in the housing, and electrical conductors electrically connected, mediately or immediately, to and between contacts of the power-in receptacle, contacts of the power-out receptacle and contacts of the stem connector, the stem connector and its complementary fixture receptacle constituting the means for mounting the plug on the system. A switch cable boss in the housing accommodates electrical conductors electrically connected to the electrical conductors between contacts of the power-in receptacle and contacts of the stem connector.
REFERENCES:
patent: 1794777 (1931-03-01), Kliegl
patent: 2218545 (1940-10-01), Morten
patent: 3185757 (1965-05-01), Phillips
patent: 3492625 (1970-01-01), Bromberg
patent: 3535638 (1970-10-01), Michelin
patent: 3867000 (1975-02-01), Michalak
patent: 3869191 (1975-03-01), Tolnar, Jr. et al.
patent: 4050768 (1977-09-01), Gumb
Garnett Willard R.
Scofield Robert L.
Emerson Electric Co.
McGlynn Joseph H.
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