Patent attributes
An attachment device for attaching to a generally channel-section rail having rims forming a channel is provided. The device comprises a latch for inserting into the inside of the channel and for being retained therein by the rims of the rail, and a locking member for locking the latch in the rail. The locking member comprises a rotary shaft secured to the latch and extending axially through a bearing plats for resting on the top of the channel. The locking member also includes a cam adapted to move the bearing plate axially relative to the rotary shaft when the rotary shaft is turned in one direction or the other. The bearing plate comes closer to the latch when the rotary shaft is turned in one direction of rotation and the bearing plate moves away from the latch when the rotary shaft is burned in the opposite direction.
