Patent ID: 9208963
Filing Date: 2015-12-08
Classification: F16P,H01H,H03K

Abstract:
1. A safety switch apparatus for generating an enable signal as a function of a position of a movable safety access door of a safety barrier for a work cell having a stationary frame disposed in proximity to the safety access door when the door is in a closed position, comprising: a first mounting bracket mounted on a safety access door; a plate pivotally mounted on the first mounting bracket on the safety access door; a handle fixedly mounted on the plate; a second mounting bracket mounted on a stationary frame; a proximity switch mounted on the plate; a switch receiver carried on the second mounting bracket and adapted to be disposed in proximity with the proximity switch when the safety access door is in the closed position to activate the switch receiver a ring having an interior aperture mounted on the second mounting bracket; a tongue extending from the plate on the door adapted to be slidably inserted into the interior aperture of the ring when the door is in the closed position and the plate is in a latched position; and a hasp pivotally mounted on the second mounting bracket, the hasp having an aperture, the hasp movable between a first position spaced from the ring to enable the ring to receive the tongue on the second mounting bracket and a second position wherein the aperture in the hasp surrounds the ring disposing the hasp in an interference position with respect to a path of movement of the pivotal plate on the door to the closed position preventing actuation of the switch receiver.