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Expired Canadian patentCanada

Slip connector for weight actuated height adjustors

CA 1263594 C · Owner: Steelcase Inc. · Inventors: Scolten, Brian L.; Knoblock, Glenn 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 slip connector is provided for swivel chairs and other similar seating, of the type having a base a seat, rotatably supported thereon, and a weight actuated height adjustor, which engages when the seat is unoccupied to facilitate adjusting the seat height, and disengages when the seat is occupied to permit the seat to swivel on the base without affecting the seat height. The slip connector includes two coupling members, which rotate about a common axis when the seat swivels about the base. A stop mechanism positively interconnects the coupling members causing them to rotate together when they assume a first angular, relationship. A spring interconnects the coupling members and biases the …

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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 December 5, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 5, 2006.
  • 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 3, 1987
GrantedDecember 5, 1989
Term endedDecember 5, 2006
Patent numberCA 1263594 C
Classification (IPC)F16M11/24 +2 more

Timeline

Timeline From CIPO dates

1988199019921994199619982000200220042006Application filedApril 3, 1987Patent grantedDec 5, 1989Term endedDec 5, 2006

Sources & verification

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