Anti-tamper cam system
AssigneeIdem Safety Switches Limited
InventorsMedi Mohtasham, Hamed Faridfar
Life of this patent
Estimating the term…
Abstract
The present invention relates to an anti-tamper cam system 2 used to selectively operate a safety interlock switch 6. The cam system 2 comprising a cam 12 selectively rotatable between two positions in order to activate the switch 6. The cam 12 has a locking system 20, 22; 32a, 32b to lock the cam 12 in one of its positions. The locking system 20, 22; 32a, 32b comprises a separate mechanical locks 20, 22; 32a, 32b on each side of the cam 12, each of which must be unlocked using a dedicated key actuator 8 before the cam 12 can be rotated to its other position.
Claims18
A cam system used to selectively activate a switch by movement of a cam plunger between a first and second position, the plunger being moved between said first and second position by rotation of a cam between a corresponding first and second position of the cam, wherein the cam system comprises said cam, a locking system for locking said cam in said first cam position and a release system for unlocking the locking system enabling the cam to rotate to said second position, wherein the locking system comprises a separate mechanical lock on each side of the cam which must be unlocked by the release means before the cam can be rotated to the second position of the cam, and wherein each mechanical lock comprises two separate components which must be released in sequence to enable the unlocking of the cam.
Dependencies are inferred from the claim text.