Patent ID: 7905166

Claim:
A device for arresting movement of a rail accommodated within a channel, the device comprising: a slide surface located on one of the rail or channel, the slide surface inclined in relation to an opposing side wall of the other of the rail or channel; a slide member arranged to slide along the slide surface between an extended position and a retracted position; and a resilient member which biases the slide member along the slide surface towards the extended position and into abutment with the side wall, wherein movement of the channel in relation to the rail in a first direction moves the slide member along the slide surface towards the retracted position, wherein movement of the channel in relation to the rail in a second direction, opposite to the first direction, moves the slide member along the slide surface towards the extended position, and wherein the resilient member is at least partially received within a sleeve wherein the sleeve is guided along a linear path by a guidance mechanism.