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Expired Canadian patentCanada

Axle alignment apparatus using optical means

CA 1058397 A · Owner: American Machine Products Corporation · Inventors: Johnston, Harry R.

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

Abstract of the Disclosure: Apparatus for aligning the axle of a vehicle such as a truck, bus, etc. comprises a carriage adapted to be rolled into position adjacent the axle, a beam mounted on the carriage to pivot about a horizontal axis orthogonal to the axle and, means for projecting a laser ray coaxial with the pivot axis of the beam and onto a target positioned forwardly of the axle at a predetermined location with respect to the frame of the vehicle. The underside of the axle is engaged by a pair of forks adjustably carried by the beam to position the beam parallel to the axle. A centering mechanism is provided to center the laser with respect to the axle by causing the beam pivot …

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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 July 17, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 17, 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.
Filed—
GrantedJuly 17, 1979
Term endedJuly 17, 1996
Patent numberCA 1058397 A
Classification (IPC)G01B11/27

Timeline

Timeline From CIPO dates

198019821984198619881990199219941996Patent grantedJuly 17, 1979Term endedJuly 17, 1996

Sources & verification

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