Sensor for braking systems
First Claim
1. In a sensor for responding to the rate of change or changing rotational speeds of a vehicle wheel and including a flyweight coupleable for rotation in response to wheel rotation and selectively decoupleable in response to the exertion on the flyweight of a torque arising due to a change in rotational speed of the wheel, control means operatively connected with the flyweight for exerting on the flyweight torques resisting decoupled rotation of the flyweight, and signalling means operatively connected with the control means and responsive to decoupled rotation of the flyweight for signalling occurrences of an excessive rate of change in changing rotational speeds of the wheel, an improvement in said control means comprising means for constantly exerting a torque on the flyweight and thereby for causing said signalling means to signal continuously for the interval of time during which the rate of change is excessive.
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Accused Products
Abstract
A sensor for responding to the rate of change of changing rotational speeds of a rotating vehicle wheel and including a flyweight coupleable for rotation in response to wheel rotation and decoupleable in response to a rate of change of a changing rotational speed of the wheel which exceeds a certain threshold rate. In accordance with the present invention, a brake device is operatively connected with the flyweight for constantly exerting on the flyweight a torque resisting rotation of the flyweight. Provision is made for signalling of any occurrence of an excessive rate of change of rotational speed of the wheel continuously for the interval of time during which a threshold rate is exceeded, and the brake device may be operable in response to such signalling for changing the level of torque exerted.
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Citations
31 Claims
- 1. In a sensor for responding to the rate of change or changing rotational speeds of a vehicle wheel and including a flyweight coupleable for rotation in response to wheel rotation and selectively decoupleable in response to the exertion on the flyweight of a torque arising due to a change in rotational speed of the wheel, control means operatively connected with the flyweight for exerting on the flyweight torques resisting decoupled rotation of the flyweight, and signalling means operatively connected with the control means and responsive to decoupled rotation of the flyweight for signalling occurrences of an excessive rate of change in changing rotational speeds of the wheel, an improvement in said control means comprising means for constantly exerting a torque on the flyweight and thereby for causing said signalling means to signal continuously for the interval of time during which the rate of change is excessive.
- 14. In a sensor for responding to the rate of change of changing rotational speeds of a vehicle wheel and including a flyweight coupleable for rotation in response to wheel rotation and selectively decoupleable in response to the exertion on the flyweight of a torque arising due to a change in rotational speed of the wheel, control means operatively connected with the flyweight for exerting on the flyweight torques resisting decoupled rotation of the flyweight, and signalling means operatively connected with the control means and responsive to decoupled rotation of the flyweight for signalling occurrences of an excessive rate of change in changing rotational speeds of the wheel, an improvement in said control means comprising electrically controllable drag means for exerting a torque on the flyweight substantially continuously during braking and thereby for causing said signalling means to signal continuously for the interval of time during which the rate of change is excessive.
- 17. In a sensor for responding to the rate of change of changing rotational speeds of a vehicle wheel and including a flyweight coupleable for rotation in response to wheel rotation and selectively decoupleable in response to the exertion on the flyweight of a torque arising due to a change in rotational speed of the wheel, control means operatively connected with the flyweight for exerting on the flyweight torques resisting decoupled rotation of the flyweight, and signalling means operatively connected with the control means and responsive to decoupled rotation of the flyweight for signalling occurrences of an excessive rate of change in changing rotational speeds of the wheel, and improvement in said control means comprising dynamoelectric drag means for exerting a torque on the flyweight substantially continuously during braking and thereby for causing said signalling means to signal continuously for the interval of time during which the rate of change is excessive.
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19. In a braking system for a vehicle wheel and having anti-lock control means;
- and sensor means for actuating the anti-lock means including a flyweight coupleable for rotation in response to wheel rotation, freewheel means operatively interconnecting the flyweight and the wheel for selectively decoupling the flyweight from the wheel upon a torque being exerted therebetween due to a change in rotational speed of the wheel, and control means for exerting on the flyweight a torque resisting decoupled rotation of the flyweight, the improvement in said control means comprising means operable independently of said freewheel means for constantly exerting a torque of at least a predetermined magnitude on the flyweight during braking of the wheel.
- View Dependent Claims (20)
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21. In a braking system for a vehicle wheel and having anti-lock control means;
- and sensor means for actuating the anti-lock means including a flyweight coupleable for rotation in response to wheel rotation, means operatively interconnecting the flyweight and the wheel for selectively decoupling the flyweight from the wheel upon a torque being exerted therebetween due to a change in rotational speed of the wheel, and on electrically controllable drag device for exerting on the flyweight a torque resisting decoupled rotation of the flyweight, the improvement in said control means comprising means for constantly exerting a torque of at least a predetermined magnitude on the flyweight during braking of the wheel and including electrical circuit means electrically connected to said drag device and responsive to decoupled rotation of said flyweight for switching between first and second electrical currents corresponding respectively to first and second magnitudes of torque.
- View Dependent Claims (22, 23, 24, 25, 26, 27, 28, 29, 30, 31)
Specification