Patent ID: 8119940

Claim:
A contact block for a safety switch, the contact block comprising: a support structure; a fixed pair of electrical contacts fixed in position on the support structure; and a contact block plunger provided with a bridging contact, the bridging contact extending through the contact block plunger, from one side to another, and protruding from the sides of the contact block plunger, the contact block plunger being moveable in-between the fixed pair of electrical contacts to move the bridging contacts into and out of contact with the fixed pair of electrical contacts, and a contact block guide extending along the support structure and between the pair of fixed electrical contacts; the contact block guide further defined as a guide rail and the guide rail is substantially cylindrical and the contact block plunger being co-operable with the contact block guide such that the contact block plunger is restricted to movement along the contact block guide.