Electricity: circuit makers and breakers – Electric switch details – Cases and bases
Patent
1975-04-03
1976-07-27
Tolin, Gerald P.
Electricity: circuit makers and breakers
Electric switch details
Cases and bases
248 27A, H01H 902
Patent
active
039719081
ABSTRACT:
The snap-in arrangement includes a retainer slidably mounted on a bushing extending from a switch frame mounted on the switch base of an electrical toggle switch and pivotally supporting a toggle lever for actuating switch contacts housed in the switch base. The bushing is adapted to be inserted through an aperture in a support panel and has a main body, an enlarged outer end portion including an annular ledge extending radially outwardly from the outer surface of the main body, an annular slot in the underside of the ledge, and an inner end portion of a reduced diameter. The retainer has an annular base slidably mounted on the inner end portion of the bushing and a plurality of resilient fingers connected to and normally extending axially in an outwardly diverging direction from the retainer base with the free ends thereof extending radially outwardly beyond the outer periphery of the enlarged end portion of the bushing. The free ends of the fingers are releasably held in the bushing slot prior to mounting.
During insertion of the bushing through the panel aperture, an annular flange on the retainer base abuts the back of the panel and continued axial movement of the bushing relative to the retainer causes the free ends of the fingers to be released from the slot, allowing the fingers to spring outwardly to their normally expanded positions. The biasing force of a coiled spring encircling the retainer, with one end bearing against the switch frame and the other end bearing against the back of the panel, wedges the expanded fingers between the outer corner of the bushing ledge and the inner wall of the panel aperture to lock the device on the panel.
REFERENCES:
patent: 2223673 (1940-12-01), Catron
patent: 2889125 (1959-06-01), Hart
patent: 3319909 (1967-05-01), Goslin
Cutler-Hammer, Inc.
Tolin Gerald P.
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