Patent Yard Sign in
Expired Canadian patentCanada

Tire testing machine having adjustable bead width

CA 1281899 C · Owner: Cargould, Barry D. · Inventors: Cargould, Barry D.; Beebe, James C.

CIPO record

Overview

Drawings and full text

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

Open the CIPO record

Abstract From the Canadian patent

Tire Testing Machine Having Adjustable Bead Width Abstract of the Disclosure, A tire testing machine having a rotatably but actuatably fixed upper rim, a rotatable lower rim assembly and a hydraulic cylinder for raising and lowering the lower rim to a desired position. The lower rim assembly has a resiliently-biased center pilot in the form of a cone that is engageable with a recess in the upper rim to center the lower rim with respect to the upper rim and to transmit rotational forces from the upper rim to the lower rim. The centering action of the pilot is assisted by a pair of mating spherical washers associated with the lower rim assembly.

Read the whole patent

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 March 26, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 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.
FiledMay 31, 1988
GrantedMarch 26, 1991
Term endedMarch 26, 2008
Patent numberCA 1281899 C
Classification (IPC)G01M17/02

Timeline

Timeline From CIPO dates

1989199119931995199719992001200320052007Application filedMay 31, 1988Patent grantedMarch 26, 1991Term endedMarch 26, 2008

Sources & verification

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