Safety switch

Details Safety switch Safety switch

1982-10-20

1984-06-12

Shepperd, John W.

Electricity: circuit makers and breakers

Special application

Actuated concurrently with operation or use of art device

200 44, 200324, 200334, H01H 2700

Patent

active

044543921

ABSTRACT:
A safety switch comprising a drive and locking device. A key is used to operate the drive. The drive comprises a ram longitudinally moved by the key. The locking device includes a blocking member for the ram which can only be released by the key.

REFERENCES:
patent: 3793492 (1974-02-01), Duncan et al.
patent: 3840715 (1974-10-01), Gwozdz
patent: 4066856 (1978-01-01), Merkle
patent: 4395608 (1983-07-01), Eicker et al.

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