Windshield wiper mechanism

Claim 1

A WINDSHIELD WIPER MECHANISM COMPRISING A FRAME FOR CONTAINING SAID MECHANISM, A ROTATABLE MEMBER ADAPTED TO BE COUPLED TO AND DRIVEN BY A MOTOR IN ROTATIONAL MOVEMENT ABOUT AN AXIS OF ROTATION RELATIVE TO THE FRAME, OSCILLATING CRANK MEANS SUPPORTED ON THE FRAME FOR DRIVING A WINDSHIELD WIPER BACK AND FORTH THROUGH AN ARC BY MEANS FOR REPETITIVE OSCILLATORY MOVEMENT, AN ACTUATING LINK FOR TRANSLATING THE ROTATION OF THE ROTATABLE MEMBER INTO THE OSCILLATORY MOVEMENT OF THE CRANK, SAID LINK BEING PIVOTALLY CONNECTED AT ONE END TO THE CRANK AND AT THE OTHER END OF THE ROTATABLE MEMBER AT A RADIUS FROM THE AXIS OF ROTATION, A PARKING SWITCH SUPPORTED BY THE FRAME INCLUDING A PAIR OF SWITCH CONTACTS CONNECTABLE TO THE MOTOR, ACTUATOR MEANS FOR OPENING THE CONTACTS OF THE PARKING SWITCH TO DEENERGIZE THE MOTOR, SAID PARKING SWITCH BEING ROTATABLE RELATIVE TO THE ACTUATOR MEANS TO CHANGE THE POINT AT WHICH THE ACTUATOR MEANS OPENS THE PARKING SWITCH, SAID PIVOTAL CONNECTION BETWEEN THE LINK AND THE ROTATABLE MEMBER INCLUDING MEANS TO CHANGE THE EFFECTIVE RADIUS FROM THE AXIS OF ROTATION OF THE PIVOTAL CONNECTION FOR INDUCING MOVEMENT OF THE ACTUATOR MENS TO OPEN THE CONTACTS THEREBY DEENERGIZING THE MOTOR.