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Expired Canadian patentCanada

Feeding device for effecting a longitudinally directed relative movement between a stem and the device proper

CA 1280677 C · Owner: Osa Ab · Inventors: Forslund, Torsten

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 feeding device for effecting a longitudinally directed relative movement between a stem and the device proper comprises at least one feeding unit in the form of an endless band or band-like element which is drivable by means of at least one rotatable wheel. The endless element is composed of a large number of hingedly interconnected chain-forming links (11, 12) which are movable along the outer side or the periphery of an elongate guide bar and which by bearing against said bar (10), are adapted to transfer substantially uniformly distributed bearing pressures to the stem substantially throughout the length of said bar. Fig. 2.

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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.
FiledApril 1, 1987
GrantedFebruary 26, 1991
Term endedFebruary 26, 2008
Patent numberCA 1280677 C
Classification (IPC)B27L1/00 +2 more

Timeline

Timeline From CIPO dates

1988199119941997200020032006Application filedApril 1, 1987Patent 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.