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Expired Canadian patentCanada

Skip trailer (tipaskip)

CA 1208257 A · Owner: Crowcroft Engineering Limited · Inventors: Jones, John C.; Heward, Peter D.; Jones, Valerie A.

CIPO record

Overview

Drawings and full text

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

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Abstract From the Canadian patent

A trailer for towing by family saloon cars and the like has a wheeled frame (12) with a towing hitch (34) at the front. The frame has a respective ramp rail (22) at each side to enable a skip (14) to be drawn onto the frame, a support wheel (25) of the skip engaging on each rail. The skip can carry heavy bulk loads such as sand or bricks in the region of a ton which normal car trailers could not support. In addition the mounting of the skip on the trailer frame by means of support wheels enables the skip to be pivoted in situ to tip out its load. Tipping, and mounting and demounting of the skip are effected using winch (16) supported on the frame near the towing hitch. The trailer also has …

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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 22, 1986. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 22, 2003.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJuly 14, 1982
GrantedJuly 22, 1986
Term endedJuly 22, 2003
Patent numberCA 1208257 A
Classification (IPC)B60P1/04 +2 more

Timeline

Timeline From CIPO dates

1983198619891992199519982001Application filedJuly 14, 1982Patent grantedJuly 22, 1986Term endedJuly 22, 2003

Sources & verification

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