Key-operated electric safety switch

Details Key-operated electric safety switch Key-operated electric safety switch

1996-12-05

1999-04-27

Friedhofer, Michael A.

Electricity: circuit makers and breakers

Multiple circuit control

Operating means

200 4307, H01H 2700

Patent

active

058981438

ABSTRACT:
A key-operated safety switch including a control roller and a component for unlocking the control roller. The unlocking component may be applied by way of a cam surface against a lock engaged in a catch of the control roller, so as to free the control roller when the key is inserted.

REFERENCES:
patent: 4658102 (1987-04-01), Seim et al.
patent: 4963706 (1990-10-01), Mohtasham
patent: 5420385 (1995-05-01), Cooper
patent: 5464954 (1995-11-01), Kimura et al.
patent: 5516993 (1996-05-01), Wecke et al.
patent: 5622253 (1997-04-01), Wecke et al.
patent: 5703339 (1997-12-01), Rapp et al.

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