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Expired Canadian patentCanada

Rotational control apparatus

CA 1280702 C · Owner: Raines, Charles D. · Inventors: Raines, Charles D.; Schilling, Hugh K.; Dayen, Leonid

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

TITLE, Rotational Control Apparatus, ABSTRACT OF THE DISCLOSURE A rotational control apparatus is shown in its most preferred form according to the teachings of the present invention as a combination clutch/brake. The clutch/brake includes an interfacing member formed by first and second pressure plates rotatably mounted but reciprocally related with respect to each other. The interfacing member is reciprocated between one of first and second disk packs by an actuating rod reciprocally mounted in the housing and interconnected to ears formed on the second pressure plate. The actuating rods are reciprocated by actuation canisters located on opposite ends thereof. Each of the actuation …

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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 February 26, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 26, 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.
FiledDecember 8, 1986
GrantedFebruary 26, 1991
Term endedFebruary 26, 2008
Patent numberCA 1280702 C
Classification (IPC)F16D67/02 +2 more

Timeline

Timeline From CIPO dates

19871990199319961999200220052008Application filedDec 8, 1986Patent grantedFeb 26, 1991Term endedFeb 26, 2008

Sources & verification

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