Press type electric switch

Details Press type electric switch Press type electric switch

1990-08-15

1991-03-26

Scott, J. R.

Electricity: circuit makers and breakers

Multiple circuit control

Multiple switch

200 5EA, H01H 920

Patent

active

050031341

ABSTRACT:
A switch includes two casings engaged together. Four shafts are extendible through the upper casing. Four pairs of ribs are formed in the lower casing. A contact arm is received in the lower casing. Three conductors are provided in the lower casing. A retaining plate and a control plate are slidably provided between the protrusions and the ribs. Each conductor is caused to contact the contact arm when the shaft is depressed downward. Two or more shafts are prevented from being fully depressed by the control plate. A projection of each shaft slides between the ribs so that the shaft will not be distorted when two or more shafts are depressed simultaneously.

REFERENCES:
patent: 2652470 (1953-09-01), Batcheller
patent: 2968704 (1961-01-01), Woodward et al.
patent: 4743714 (1988-05-01), Chien

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