B - Operations – Transporting – 60 – T
Patent
B - Operations, Transporting
60
T
341/73.4
B60T 8/00 (2006.01) B60T 8/171 (2006.01) B60T 8/1761 (2006.01)
Patent
CA 1225449
ABSTRACT An electronic sensor for responding to the rate of change of changing rotational speeds of a vehicle wheel which is coupled with a brake including a braking force modulator for subjecting the vehicle wheel to modulated braking forces. A tachometer is operatively connected to the vehicle wheel and responsive to vehicle wheel rotation for generating an electrical speed signal indicative of the rotational speed of the vehicle wheel. A threshold device is operatively coupled to the tachometer and responsive to vehicle wheel rotation for generating an electrical excessive rate signal indicative of occurrences of an excessive rate of change in changing rotational speeds of the vehicle wheel. There is a reference device electrically connected with the threshold device and tachometer for receiving electrical signals there- from and for generating a changing electrical reference signal indicative of an acceptable rate of change in changing rotational speeds of the vehicle wheel. A device is opera- tively associated with the vehicle for responding to varia- tions in vehicle operating conditions and with said reference device for varying the rate of change of the reference signal in predetermined relation to variations in vehicle operating conditions. A comparator device is electrically connected with the tachometer and reference device for receiving electrical signals therefrom and for comparing the speed and reference signals and for generating a logic signal indicative of the relation of the speed and reference signals. An electrical switching device is electrically connected with the threshold device and comparator device for receiving electrical signals there- from and for generating an electrical output signal for transmission to the braking force modulator and indicative of a brake relief phase of modulation of braking force.
466432
Blomberg Folke I.
Holst Jan-Olov M.
Blomberg Folke I.
Holst Jan-Olov M.
Perley-Robertson Hill & Mcdougall Llp
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