Abstract:
A control system for automatically maintaining a desired rate of travel of a vehicle by way of comparing an actual speed signal generated in response to a travelling speed of the vehicle with a standard signal generated to represent the desired travel rate of the vehicle. The system further comprises a synchronous pulse generator to generate with a slight delay a synchronous pulse corresponding to the actual speed signal, and a speed acceleration-deceleration compensating circuit for compensating temporarily the standard signal in response to a width difference between a pulse converted from the actual speed signal and the synchronous pulse, thereby to essentially eliminate hunting, overshoot and undershoot of the vehicle under any cruising conditions.
Abstract:
A method and apparatus for control of a vehicle at constant speed. An actual vehicle speed signal is developed and when it is desired to operate the vehicle continuously at this actual speed, the actual speed is stored in a memory. A negative feedback signal responsive to the opening degree of the throttle valve is applied to the storage means storing the desired vehicle speed and varies the stored desired vehicle speed in accordance with the opening degree of the throttle valve. The actual vehicle speed signal is then brought into coincidence with the desired vehicle speed, thus maintaining the vehicle at a constant speed equal to the desired vehicle speed.
Abstract:
A governor switch apparatus including a governor mechanism to be driven at various speeds of a rotary element and a switching mechanism to be actuated by the governor mechanism. The switching mechanism comprises a seesaw lever to be actuated at its central portion by the governor mechanism, a first switching device connected with a first end of the lever and provided with a first normally open switch, a second switching device connected with a second end of the lever to be assembled symmetrically with the first switching device and provided with a second normally open switch, a stopper for blocking the movement of the first end of the lever after closure of the first switch, and a spring for normally biasing the second end of the lever against actuating force exerted on the lever to close the second switch after the closure of the first switch.
Abstract:
A device for controlling the speed of a vehicle in which the actual vehicle speed is compared to a reference speed and the speed is controlled until the actual speed is equal to the reference speed. The device includes a feedback circuit for adjusting the reference speed in order to eliminate hunting.
Abstract:
A speed-responsive switch coupled to a moving part of a vehicle is closed when the vehicle speed exceeds a predetermined limit to pass a current through an activating circuit including the coil of a solenoid thereby to activate the solenoid, which thereby operates to close a high-speed valve in the high-speed venturi (throat or barrel) of the carburetor of the vehicle engine and thereby to reduce the vehicle speed. When absolutely necessary, as in an emergency, the activating circuit is rendered temporarily inoperative by another switch, thereby permitting the vehicle to be driven at speeds above the limit.
Abstract:
EACH FRICTION PAD OF A BRAKE DISK IS PROVIDED WITH A DETECTING SWITCH DEVICE OPERATING TO OPEN A DETECTION CIRCUIT WHEN THE PAD IS WORN TO AN ALLOWABLE WEAR LIMIT THEREBY TO CAUSE A WARNING LAMP TO BE LIT. THE DETECTING SWITCH DEVICE MAY BE A SWITCH OPERATED BY MOVEMENT OF A BACKING METAL SUPPORTING THE FRICTION PAD, A WIRE CUT BY ABRASION THEREOF BY THE BRAKE DISK, OR CONTRACTS RELEASED BY ABRASION OR CONTACT BY THE BRAKE DISK, A SPRING DEVICE IN EACH CASE PREVENTING THE DETECTION CIRCUIT THUS OPENED FROM BEING CLOSED AGAIN.
Abstract:
A governing apparatus for a double barrel compound type carburetor including a mechanism to open the primary throttle thereof which comprises a servo device to open the secondary throttle of the carburetor in accordance with venturi vacuum produced at least within the primary induction passage and an external vacuum source communicated therein and to close the secondary throttle by biasing force of a spring installed therein when vehicle speed exceeds a predetermined value, thereby to prevent excessive vehicle speeds.
Abstract:
A pneumatic and hydraulic suspension device for vehicles is provided with a working cylinder having a plurality of communication or chassis level adjusting openings extending therethrough at different positions along the length thereof. A piston member is slidably received within the working cylinder to define two variable volume chambers on opposite sides thereof. Valve means are provided for controlling fluid communication between the two chambers the chassis level adjusting openings whereby the chassis height may be selectively adjusted through the automatic or manual control of the valve means.
Abstract:
A brake wear indicator for detecting the depth of wear of a brake lining for use on a disc brake, comprising an indicating circuit connected to a source of power and a switch means, said switch means being actuated independently of the braking surfaces of the disc even when the brake linings wear down beyond a predetermined depth whereby the braking surfaces of the disc are not injured.
Abstract:
A speed sensing device for a vehicle comprising a governor means movable proportional to vehicle speed, a lever pivotally mounted on a housing of the device at one end thereof so as to oscillate in response to movement of the governor means, permanent magnet means secured to the other end of the lever and reed switching means secured to the housing and adapted for cooperating with the magnet means being displaced with the lever to thereby sense the vehicle speed.