Electricity: circuit makers and breakers – Electric switch details – Cases and bases
Patent
1990-11-19
1991-09-03
Ramirez, Ramon O.
Electricity: circuit makers and breakers
Electric switch details
Cases and bases
248 271, 248909, 361346, 361419, H01H 902
Patent
active
050456555
ABSTRACT:
An electrical command or information device housing of the type adapted to be affixed to an assembly plate through a substantially circular bore hole thereof which selectively includes or excludes a radially inwardly opening keyhole slot or notch includes a rib which projects radially outwardly from the housing and is adapted to be received in the keyhole slot. The rig has high shear resistance in a direction substantially tangential to the housing, but includes at least one notch for effecting relatively low force break off of the rib upon the application of radial or axial forces thereto.
REFERENCES:
patent: 4451720 (1984-05-01), Ludwing
patent: 4678879 (1987-07-01), Kenway
patent: 4947010 (1990-08-01), Heydner et al.
Kleine Heinz
Ludwig Bernd
Ramirez Ramon O.
Square D Company (Deutschland) GmbH
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