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Expired Canadian patentCanada

Fluid pressure cylinder convertible for use with or without internal bumpers

CA 1098779 A · Owner: General Gas Light Company · Inventors: Toliusis, Vytautas J.

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 fluid pressure cylinder which utilizes a standardized housing, piston and piston rod for forming a cylinder assembly either with or without bumpers. The bumpers can optionally be positioned on the piston when desired with the overall assembled length and maximum stroke of the cylinder being identical whether provided with or without bumpers. The piston is selectively mounted on the piston rod in one axial orientation if bumpers are not used, and the piston is reversed and mounted on the piston rod in the opposite axial orientation when bumpers are used.

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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 April 7, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 7, 1998.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledOctober 31, 1978
GrantedApril 7, 1981
Term endedApril 7, 1998
Patent numberCA 1098779 A
Classification (IPC)F16J1/00 +1 more

Timeline

Timeline From CIPO dates

1979198119831985198719891991199319951997Application filedOct 31, 1978Patent grantedApril 7, 1981Term endedApril 7, 1998

Sources & verification

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