Patent ID: 8089012

Claim:
A safety switch comprising a transverse cam, a sliding cam which acts on the transverse cam to move it from a first position in which said transverse cam enables a power supply to a second position in which said transverse cam acts to cut said power supply, wherein said sliding cam has connecting means to connect to a cable, tension means to provide a predetermined tension in a connected cable and moving means to move said sliding cam when said applied predetermined tension varies, wherein said sliding cam is moveable in a first plane and said transverse cam movement is in a second plane transversely disposed to said first plane, and wherein the switch further comprises means to releasably retain the transverse cam in said first or second position and the means to retain comprises at least one fixed structure comprising at least one detent or spring loaded plunger, the other of which is carried on a surface of the transverse cam, with the spring loaded plunger being adapted to be releasably retained in the detent.