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Expired Canadian patentCanada

Method of automatically actuating a vehicle wheel brake with the aim of preventing the wheel from skidding

CA 1283727 C · Owner: Swiden, Lennart · Inventors: Swiden, Lennart

CIPO record

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Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

An automatic method for preventing wheel skidding during braking and acceleration is disclosed, wherein an instantaneous rotational wheel speed is sensed and an instantaneous absolute speed variation is calculated therefrom. During braking the, brake is released automatically when rotational speed either reduces so that speed variation is greater than a predetermined maximum permissible value, or when rotational speed approaches zero with the vehicle still moving. The brake is applied during braking when rotational speed increases to a predetermined timevarying value after brake release. During acceleration the, brake is applied when rotational speed increases so that speed variation is …

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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 April 30, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 30, 2008.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMarch 2, 1987
GrantedApril 30, 1991
Term endedApril 30, 2008
Patent numberCA 1283727 C
Classification (IPC)B60T8/62 +2 more

Timeline

Timeline From CIPO dates

1988199119941997200020032006Application filedMarch 2, 1987Patent grantedApril 30, 1991Term endedApril 30, 2008

Sources & verification

Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.