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Expired Canadian patentCanada

Hydropneumatic gun for setting blind-rivet nuts

CA 1300564 C · Owner: Lobster Tool Co. Ltd. · Inventors: Tsuyuguchi, Hirohumi; Kubo, Yoshiyuki; Umemura, Yasuo

CIPO record

Overview

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

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Abstract From the Canadian patent

30-, Abstract, The present invention relates to improvements in a hydropneumatic gun for setting blind-rivet nuts used for integrally securing, for example, two panels to each other with a nut. In the hydropneumatic gun for setting blind-rivet nuts, an air piston fitted in an air cylinder is moved to pressurize oil housed in the gun body causing an oil piston to be retracted, so that a screw mandrel attached to the oil piston at its tip is retracted to the inner part of the gun body thereby to, exert a deforming force to a sleeve of a nut threadedly mounted on the screw mandrel. The hydropneumatic gun for setting blind rivet nuts comprises an air motor to be rotated by compressed air, an …

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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 May 12, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 12, 2009.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJanuary 27, 1988
GrantedMay 12, 1992
Term endedMay 12, 2009
Patent numberCA 1300564 C
Classification (IPC)B21J15/10 +1 more

Timeline

Timeline From CIPO dates

1989199219951998200120042007Application filedJan 27, 1988Patent grantedMay 12, 1992Term endedMay 12, 2009

Sources & verification

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