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Expired Canadian patentCanada

Control device for hydrostatic steering means or the like

CA 1280668 C · Owner: Jorgensen, Erik Casper · Inventors: Jorgensen, Erik Casper

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 control device for hydrostatic steering means comprises two rotatable slide elements (32, 33). Between the connections on the pump side and the container side, they possess a bypass throttle (17) which is open in the neutral position. The bypass throttle (17) has two throttle positions behind each other in that two control grooves (56 57), mutually offset in the direction of rotation are interconnected in one slide element (33) in the neutral position by a bridging space (58) in the other slide element (32). This results in a marked reduction in noise. Fig. 3

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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.
FiledSeptember 11, 1987
GrantedFebruary 26, 1991
Term endedFebruary 26, 2008
Patent numberCA 1280668 C
Classification (IPC)B62D3/14 +2 more

Timeline

Timeline From CIPO dates

1988199119941997200020032006Application filedSep 11, 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.