Interlocking and maintaining attachment for two standard pushbut

Details Interlocking and maintaining attachment for two standard pushbut Interlocking and maintaining attachment for two standard pushbut

1978-02-27

1979-12-04

Scott, James R.

Electricity: circuit makers and breakers

Multiple circuit control

Multiple switch

74483PB, 200 5E, 200 50C, 200153G, H01H 900, G05G 1100

Patent

active

041773632

ABSTRACT:
Two standard momentary pushbuttons mounted in spaced-part relation on a common support normally directly actuate two switch units, respectively. A maintaining and interlocking attachment is interposed between the pushbuttons and switch units so that when one pushbutton is depressed, it will be maintained depressed and will restore and lock out the other pushbutton so that it cannot be depressed simultaneously. This is done by mounting a plurality of spacer rods between the pushbuttons and their associated switch units to provide space for a bracket secured therein and mounting a dual-spring-biased center-pivoted bistable toggle mechanism having a pair of driven pins, one for each pushbutton. A pair of push-levers are clamped to the standard washer-like drive plates of the respective pushbuttons and are provided with push-flanges and elongated drive slots. The push-flanges actuate the plungers of the respective switch units whereas the elongated slots engage the respective driven pins to move the toggle mechanism from one stable state over its line of action to cause it to snap to its other stable state and be maintained thereat.

REFERENCES:
patent: 2487970 (1949-11-01), Horn et al.
patent: 2930859 (1960-03-01), Nolden et al.
patent: 3303295 (1967-02-01), Davis
patent: 3391257 (1968-07-01), Frank
patent: 3402620 (1968-09-01), Mukai et al.
patent: 3560677 (1971-02-01), Kolb et al.
patent: 3624321 (1971-11-01), Puetz et al.

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