Cable-controlled electrical safety switch device

Details Cable-controlled electrical safety switch device Cable-controlled electrical safety switch device

H - Electricity

01

H

306/6

H01H 17/08 (2006.01) F16P 3/12 (2006.01) H01H 3/02 (2006.01) H01H 3/32 (2006.01) H01H 15/10 (2006.01)

Patent

CA 1301221

ABSTRACT OF THE DISCLOSURE A cable-controlled electrical safety switch device comprises a piston 15 tensioning a cable 2 under the action of a spring 23 via a rod 10 and a screw thread 12a for adjusting the tension of the spring and of the cable. A piston groove 25 actuates a push member 28 for the switch 40. The piston is angularly adjustable. The flank 32 of the groove remote from the spring is helicoidal. When the cable is long, a higher tension is selected so that the groove flank 31 moves away from the push member 28. This distancing is desirable in order that any length variations due to heat - which are greater with a long cable - may be prevented from triggering the switch. The clearance between the other flank 32 and the push member 28 is then corrected by rotation of the piston.

594521

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