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Expired Canadian patentCanada

Adapter valve

CA 1057156 A · Owner: Enterprise Brass Works · Inventors: Nelson, Lowell F.

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

An adapter assembly including an adapter body having a fluid passage extending therethrough with a poppet valve movable between open and closed positions. The poppet valve is supported on a valve stem having a gear rack thereon. A shaft extends into the adapter body and supports a manually movable handle exteriorly of the adapter body. A pinion engaging the gear rack is supported on the shaft through a lost motion connection so that the poppet valve may automatically open as the pinion rotates independently of the shaft yet may be opened as the pinion is rotated by the shaft.

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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 June 26, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 26, 1996.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Filed—
GrantedJune 26, 1979
Term endedJune 26, 1996
Patent numberCA 1057156 A
Classification (IPC)F16K31/54 +1 more

Timeline

Timeline From CIPO dates

198019821984198619881990199219941996Patent grantedJune 26, 1979Term endedJune 26, 1996

Sources & verification

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