Patent ID: 6837084

Claim:
An interlock unit for use with at least one other like interlock unit to form an interlock mechanism, which interlock unit has a top face and opposed pairs of side walls, at least one runner bar mounted in the unit for lateral sliding movement when the unit has been linked to another like interlock unit, an actuator for effecting lateral sliding movement of the runner bar which actuator is supported on the top face of the unit, one wall of an opposed pair thereof being provided with one part of a two-part unit connector and the opposed wall with the other part of the connector, which connector is arranged to permit two similar units to be joined together by relative sliding movement of the two units in the plane of the side walls to inter-engage the respective connector parts, the runner bar of one unit being engageable with the runner bar of a connected unit to transfer sliding motion thereto for sliding movement of the runner bar of said one unit in at least one direction.