Abstract:
A windshield wiper arm includes a mounting head having a mounting head cover or retainer enveloping the mounting head and pivoted thereto. The retainer may be pivoted to the mounting head with portions of its sidewalls straddling the mounting head. A pair of compression springs recessed in the mounting head bear against the web of the mounting head cover to urge the arm against a windshield of a motor vehicle. Alternatively, an exposed mounting head may be employed wherein a tension spring spans the pivotal connection. A recess in the mounting head receives a pivot shaft drive burr in driving engagement. A latch pivoted to the arm head engages the edge of one flange of the mounting head cover in the installation position. In the latching position the latch underlies the drive burr to retain it in the recess. Additional forms of latches comprise a lever transversely slidable on the mounting head, manually slidable to a position where a portion engages either a longitudinal edge or an edge at the end of the flange of the arm head cover member or retainer to maintain the arm in an installation attitude. In the latching position a portion of the lever underlies the drive burr retaining it in the drive burr recess of the mounting head.
Abstract:
An electric motor-driven windshield wiper system for producing timed dwell periods between cycles of wiper operation incorporating a first silicon-controlled rectifier triggered by a timing network which includes a unijunction transistor which is in turn triggered by an RC circuit. A cyclically actuated switch responsive to motor rotation moves between a running and parking contact. When on the running contact a rectifier is connected in circuit with the motor-energizing circuit and also bypasses the silicon-controlled rectifier thus extinguishing it. A dynamic braking circuit is provided which includes a second siliconcontrolled rectifier triggered by charging current of a capacitor in the gate circuit when the cyclically actuated switch moves from the running contact to the parking contact. When the cyclical switch moves to the run position the motor continues to be energized through the rectifier until the cyclic switch reaches the park position thereby triggering the second siliconcontrolled rectifier in the dynamic braking circuit.
Abstract:
A motor vehicle having a seat back pivotal relative to the seat with a latch for preventing relative pivotal movement between the seat and seat back. A remote controlled latch actuator system includes a fluid pressure differential energized servo unit supplied by a bellows type pump or vacuum from the intake manifold through a remotely disposed valve assembly, either solenoid operated or mechanically operated, in response to opening or closing of a vehicle door for supplying fluid pressure to the servo unit. A single door switch operates a courtesy light and the solenoid valve. A diode separates the manual courtesy light switch form the door switch circuit.
Abstract:
A FLUID PRESSURE SYSTEM UTILIZING VACUUM PRESSURE TO ACTUATE RETRACTABLE HEADLAMPS IN A MOTOR VEHICLE WHICH INCLUDES A SINGLE ACTING FLUID PRESSURE DIFFERENTIAL OPERATED POWER UNIT FOR MOVING THE HEADLAMPS TO AND FROM THEIR OPERATIVE POSITION. A PRESSURE DIFFERENTIAL OPERATED SERVOVALVE CONTROLS THE APPLICATION OF FLUID PRESSURE FROM A SOURCE TO THE POWER UNIT AS WELL AS FROM THE POWER UNIT TO A FLUID PRESSURE DIFFERENTIAL OPERATED LATCHING MECHANIM. THE LATCHING MECHANISM DIAPHRAGM CHAMBER IS PLACED IN COMMUNICATION WITH THE POWER UNIT FOR UNLATCHING A RESTRICTED BLEED IN THE LINE CONNECTING THE POWER
UNIT AND THE LATCH VENTS THE SYSTEM TO PERMIT RETURN OF THE DIAPHRAGMS IN BOTH THE LATCH UNIT AND THE POWER UNIT. A MANUALLY OPERATED CONTROLLER SELECTIVELY PORTS VACUUM TO THE SERVO-VALVE AND ALSO SERVES AS A SWITCH FOR THE HEADLAMP ELECTRICAL CIRCUIT.