Simultaneous inter-row locking inhibiting mechanism for a multi-

Details Simultaneous inter-row locking inhibiting mechanism for a multi- Simultaneous inter-row locking inhibiting mechanism for a multi-

1986-05-09

1987-10-20

Scott, J. R.

Electricity: circuit makers and breakers

Multiple circuit control

Multiple switch

200 5EA, H01H 926

Patent

active

047015802

ABSTRACT:
A mechanism for inhibiting simultaneous locking of switches in a plurality of rows in a multi-row switch device has a member for inhibiting simultaneous locking of switches in two rows. The member has a plurality of receiving portions projectingly formed in a spaced relationship by a fixed distance and an alternate relationship on both edges thereof and located corresponding to the keys in the two rows. When one of the switches in one row is operated, the member is moved to a position in which the receiving portions thereof will inhibit the corresponding keys in the other row from being depressed. The switch device also includes bar-like locking cams extending between every two adjacent switches in each row for preventing simultaneous locking of two switches in the same row.

REFERENCES:
patent: 3271529 (1966-09-01), Pawelka et al.
patent: 3544739 (1970-12-01), Shah
patent: 3970806 (1976-07-01), Distler
patent: 4297541 (1981-10-01), Niinuma

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