Anti-lock vehicle break systems
CA 1046155 A · Owner: N.V. Philips Gloeilampenfabrieken · Inventors: Skoyles, Derek R.; Sharp, Denis
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An electronic control circuit for an antilock vehicle brake system. The control circuit detects a given percentage of wheel slip to initiate an antilock control action. Once this happens the control, circuit generates a wheel velocity reference which is compared with actual wheel velocity and the antilock control action is terminated when the two velocities are in correspondence. The wheel velocity reference has a first (high) predetermined rate of change decrease from a level corresponding to the initial wheel speed and for a period which is proportional to this wheel speed, following by a predetermined rate of change increase until it reaches the velocity which it would have had if its …
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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Granted January 9, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 9, 1996.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.