Protective device for a feed unit

Details Protective device for a feed unit Protective device for a feed unit

1987-12-24

1988-12-27

Tolin, G. P.

Electricity: circuit makers and breakers

Limit switch

200 6141, 340686, H01H 316

Patent

active

047942126

ABSTRACT:
A protective device for a feed unit, especially for a spindle sleeve of a measuring machine, whereby the feed unit is surrounded by a jacket constituted of a multiplicity of springs, which touch the feed unit in the event of a collision and thereby produce electrical contacts, and in which the lower or bottom part of the feed unit is enclosed by a protective shield. The protective shield is constituted of individual screen parts which are displaceable or swingable out of their inoperative position, and which collectively enclose the lower part, wherein the screen parts are maintained in their inoperative position by means of magnets, and in which the screen parts in their tilted position touch at least one spring and thereby become electrically contactive.

REFERENCES:
patent: 3207870 (1965-09-01), Herrera
patent: 3323334 (1967-06-01), Richards
patent: 3325611 (1967-06-01), Gourley
patent: 4356362 (1982-10-01), Schmall

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