Pulse-controlled electric window raiser

Claim 1

An electric pulse-controlled unit for controlling movement of an automotive window provided for use in a vehicle having at least one lockable door with at least one window, comprising: a motor for raising and lowering said at least one window; power circuit means for activating said motor; including motor control means for providing one of a cut-off position and first and second active positions with said motor being activated for respectively raising and lowering said window when one of said first and second active positions is provided; a mechanical control switch enabling selection of one of the first and second active positions in order to operate the motor in a selected direction; raising and lowering flip-flops having priority reset, preselection input and set-to-one inputs and being connected between the output of said mechanical control switch and the input of said power circuit means; a control pulse resetting system coupled to the priority reset input of said flip-flops, comprising, a first delay circuit controlled by the reverse outputs of said flip-flops; a double control detection circuit controlled by the non-reverse outputs of said flip-flops; a voltage loading detection circuit, and an OR-gate having inputs coupled to outputs of said delay circuit, said double control detection circuit and said voltage loading detection circuit, as well as an output coupled to the priority reset inputs of said flip-flops; wherein said mechanical control switch produces a pulse output upon a first selection of one of said first and second active positions to initiate respective raising or lowering of said window.