Abstract: A system of interdependent stoppers for the two tackles which control the position of a mainsail traveler car moving along a trackway, mounted transversally across a sailboat. It comprises two pivoting block cleats, one at each end of the two tackles controlling the car, mechanically interconnected in order to establish an angular one to one correspondence between them. The system is usable either for stoppers mounted on the traveler car or at trackway ends and is responsive to the angular position of the fall to which the power is applied. The two stoppers are always in the same state: either cleated or in free running position.

Abstract: A contact that has two fixed contact elements and a mobile contact bridge actuated by a switching assembly and is urged by a pole spring. The connection between the mobile contact bridge and switching assembly is provided by a magnetic compensator connected to the switching assembly by means of a magnetic coupling device adapted so that, when the compensating forces rise above a given threshold, the magnetic compensator is disengaged from the switching assembly and becomes inoperative.

Abstract: The invention provides an electric duct for locating insulated electric wires along a wall. A removable cover member has internal channels in which wires are located at junction positions adjacent blind holes in the member through which spikes or claws of connectors extend to pierce the insulation on the wires and contact their conductive cores. The wires are retained in their channels by protuberances on a co-operating element which is locked to the cover member.