Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
67 words
A friction controller assembly comprising a rotatable disc member, a pad of high friction material arranged selectively to contact the disc member, a transducer disposed so as to apply ultrasonic vibration to the pad, a sensor adapted to monitor an external parameter and connected to apply a signal to the transducer, and an ultrasonic generator and another funtion generator in circuit between the sensor and the transducer.
Claim 2
Dependent Claim
67 words
A friction controller assembly comprising a rotatable disc member, a pad of high friction material arranged selectively to contact the disc member, a transducer disposed so as to apply ultrasonic vibration to the pad, a sensor adapted to monitor an external parameter and connected to apply a signal to the transducer, and an ultrasonic generator and another funtion generator in circuit between the sensor and the transducer.
Claim 3
Dependent Claim
31 words
A friction controller assembly according to claim 1 in which the disc member is connected to a wheel and the sensor is adapted to monitor the angular velocity of the wheel.
Claim 4
Dependent Claim
19 words
A friction controller assembly according to claim 1 or claim 2 in which the transducer is of magnetorestrictive type.
Claim 5
Dependent Claim
19 words
A friction controller assembly according to claim 1 or claim 2 in which the transducer is of piezo-electric type.
Claim 6
Dependent Claim
21 words
A friction controller according to claim 1 in which the function generator acts to vary the input to the ultrasonic generator.
Claim 7
Dependent Claim
26 words
A friction controller according to claim 1 in which the function generates has an additional output connected by way of a dc pulser to the transducer.
Claim 8
Dependent Claim
36 words
A friction controller assembly according to claim 1 in which the pad is urged into contact with the disc by hydraulic means and ultrasonic vibration is transmitted to the pad through the agency of hydraulic fluid.
Claim 9
Dependent Claim
34 words
A friction controller assembly according to claim 7 in which the pad is mounted on a piston operating in a hydraulic cylinder and the transducer applies ultrasonic vibration to hydraulic fluid in the cylinder.
Claim 10
Dependent Claim
38 words
A vehicle braking system comprising a wheel, a pad arranged to apply frictional force to the wheel, and means for automatically applying ultrasonic vibration to the pad when the angular deceleration of the wheel exceeds a predetermined value.
Claim 11
Dependent Claim
38 words
A vehicle braking system comprising a wheel, a pad arranged to apply frictional force to the wheel, and means for automatically applying ultrasonic vibration to the pad when the angular deceleration of the wheel exceeds a predetermined value.
Claim 12
Dependent Claim
68 words
A vehicle braking system according to claim 9 comprising a disc arranged to rotate with the wheel the pad being disposed to be urged into contact with the disc, a sensor operative to monitor the angular velocity of the wheel and to calculate the deceleration of the wheel, and a transducer disposed to apply ultrasonic vibration to the pad in response to an output signal from the sensor.
Claim 13
Dependent Claim
46 words
A vehicle braking system according to claim 10 including a hydraulic actuator, the pad being mounted on a piston of said actuator, and the transducer being disposed to apply ultrasonic vibration to the end wall of the cylinder of said actuator in which the piston operates.
Claim 14
Dependent Claim
25 words
A vehicle braking system according to claim 11 in which said end wall is fabricated of a material which will facilitate transmission of ultrasonic energy.
Claim 15
Dependent Claim
30 words
A vehicle braking system according to claim 10 in which means are provided to feed a dc pulse to the transducer at the onset of a signal from the sensor.
Claim 16
Dependent Claim
42 words
A friction clutch including a movable member, a friction member arranged to engage the movable member, a transducer connected to apply ultrasonic vibration to the friction member, and a function generator to vary the ultrasonic vibrations whereby clutch engagement may be modified.
Claim 17
Dependent Claim
42 words
A friction clutch including a movable member, a friction member arranged to engage the movable member, a transducer connected to apply ultrasonic vibration to the friction member, and a function generator to vary the ultrasonic vibrations whereby clutch engagement may be modified.
Claim 18
Dependent Claim
47 words
A friction clutch according to claim 14 further comprising a hydraulic actuator, the friction member being mounted on a piston of the actuator, and the transducer being positioned to apply ultrasonic vibration to the end wall of a cylinder of said actuator in which the piston operates.