Limit switch with curved or partly spherical convex cover

Details Limit switch with curved or partly spherical convex cover Limit switch with curved or partly spherical convex cover

1986-10-30

1988-11-29

Recla, Henry J.

Electricity: circuit makers and breakers

Limit switch

2003021, 200308, 200317, H01H 1306

Patent

active

047883871

ABSTRACT:
A limit switch includes a casing, a switch mechanism housed in the casing, a cover covering the casing, and an actuator mounted in the casing for operating the switch mechanism, the cover having a curved or partly spherical convex surface. The cover has at least a transparent or semitransparent portion, and a rating plate is disposed against a back of the transparent or semitransparent portion of the cover. The curved or partly spherical convex surface of the cover prevents spatter expelled from a welding machine from being deposited thereon. Since the spatter is not deposited directly on the rating plate, indications on the rating plate and the energization of an operation indication lamp within the cover can reliably be confirmed.

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IBM Tech. Disclosure Bull., vol. 19, No. 2, 7-1976, "Control Panel", pp. 405, 406, GE Brochure Limit Switches.

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