Abstract:
A device (10) allows forward (clockwise) rotation of a shaft (12) but prevents reverse rotation unless disengaged. A loop (20) is attached at one end to a slide shoe (16), passes round a drum (14) on the shaft (12), around a pin (24) and a pin (26), to an arm (28). The arm (28) can move clockwise to slacken the loop (20) to disengage the device (10) and allow rotation of the shaft (12) in either sense. A mechanism for controlling the arm (12) and for self-tightening the loop (20) are described.
Abstract:
In order to prevent a vehicle having an automatic gearbox from creeping forward a device is provided which detects when both the vehicle is substantially stationary and the driver has his foot off the accelerator (11) and increases the braking pressure or locks the transmission. Optionally the device only operates when the driver has his foot off of the brake pedal (10) and a time delay may be built in so that the required conditions have to persist for a present time before the device operates. The device also has application to manual cars e.g. to assist in hill-starts.
Abstract:
A device on a vehicle to activate its brake system on the presence of an obstacle behind the vehicle during backing. Holders (7) project backwards from the vehicle with members (9, 10) for transmitting and receiving light. If the beam of light is interrupted, the vehicle is braked. In order to keep said members (9, 10) free of dirt etc. air lines (5) directed towards them are connected to the quick-emptying valve (2) of the vehicle.
Abstract:
A torque transfer limiting arrangement for a rotational drive shaft. The arrangement includes a torque sensing device (16) for sensing torque within the drive shaft and outputting a signal indicative of the sensed torque. A braking device (60) of the arrangement is actuable for stopping the drive shaft from rotating. The arrangement also includes a portion for electrically causing operation of the braking device responsive to the signal indicative of the sensed torque above a predetermined value. In one example, the portion for electrically causing operation of the braking device includes a processor. In one example, the rotational drive shaft is part of an aircraft flap actuator system.
Abstract:
A brake force control device wherein in a case where an emergency braking operation is executed, a brake assist control is executed for generating a brake force greater than a brake force generated at the time of normal braking, wherein in a case where the variation ratio DELTA PM/C of the master cylinder pressure PM/C exceeds a first threshold value alpha , it is judged that the brake pedal is operated at high speed (102), wherein in a case where the brake operation is caused by a disturbance, the variation ratio DELTA PM/C decreases immediately thereafter, wherein in a case where the time needed for the variation ratio DELTA M/C to decrease to or below a second threshold value beta is shorter than a predetermined time T0, it is judged that the brake operation is caused by a disturbance such as a rough road or a stepped portion of a road, and the execution of the brake assist control is disabled (104, 108, 110, 112).
Abstract:
An apparatus for controlling the brake of a vehicle, which easily brings the vehicle to a halt, or starts it, only by the action of the accelerator without operating the brake pedal. Brakes (4, 5) are applied when the vehicle speed detected by a speed detector (9) becomes smaller than a predetermined threshold value. The operation of the brakes (4, 5) is turned off when a load detected by a load detector (10) becomes larger than a load operated by a load computer (11, 14).
Abstract:
A braking device including at least one solenoid valve (3) mounted in series in the hydraulic braking circuit of a motion transmission system. The solenoid valve is controlled in such a way that braking power is automatically maintained when the vehicle moves off after having come to a complete stop, and brake pressure is automatically cancelled in response to a signal indicating movement of the gearbox clutch shaft. The device may be used in a variety of mechanical systems and particularly in motor vehicles.
Abstract:
Braking system with a vacuum-type brake servo for a vehicle having direct braking control means (hill-holder or traction control). In order to implement this direct braking function, a partition (52) is made integral with the servo piston (20, 22), defining with the latter a third chamber (50). Said chamber is connected, by means of a flexible tube (66) and a dual valve (73), either to a vacuum (78) or to ambient pressure (76). The standard piston structure is thereby left intact.
Abstract:
The device senses the impact of a vehicle (10) backing into an object, and automatically applies the brakes of an ordinary hydraulic brake system to stop the vehicle very quickly, before any significant damage can be done. The device uses a pneumatic cylinder (24) to quickly and powerfully pull on the brake pedal (16) of the vehicle when the vehicle is in reverse gear and an impact is sensed. A small, light-weight and relatively inexpensive air compressor (18) which runs off of the battery (32) of the vehicle and a reservoir (20) are used to supply the air cylinder. The brakes stay in the actuated condition until the vehicle is taken out of reverse gear (38); then the air cylinder is vented to atmosphere automatically, and the brake pedal is released to return it to its initial position and enable the normal operation of the vehicle. The device can be supplied in the form of a kit to be used to easily modify existing vehicles without invading the hydraulic brake lines or vacuum system of the vehicle.
Abstract:
In an automatic parking brake, the braking pressure is increased and then maintained constant by the vehicle and actuation (7) of the brake pedal when the speed falls below a minimal value Vx (5), and decreased when the driver wishes the vehicle to move. To improve the functioning of the parking brake, the reference value Vx (5) is variable and dependent on the vehicle deceleration.