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Expired Canadian patentCanada

Solenoid valve, especially an outlet valve for infusion water

CA 1304342 C · Owner: Moldenhauer, Hermann · Inventors: Moldenhauer, Hermann

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

A solenoid valve especially an outlet valve for infusion water. A valve chamber (2) is accommodated in a valve housing (1) and communicates with a supply channel (Z) and with a drain channel (A) by way of a valve seat (3). The magnetic armature (6) of a magnetic system accommodated on valve housing (1) is connected to a valve plate (10) accommodated in the valve chamber (2) opposite the valve seat (3). The valve chamber (2) is sealed off from the interior (11) of the magnetic system by an isolating diaphragm (12). To prevent calcium deposits the valve seat (3) has a sheet, (13) of polytetrafluoroethylene accommodated coaxially along its inner circumference and projecting beyond the surface …

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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 30, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 30, 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.
FiledJuly 20, 1988
GrantedJune 30, 1992
Term endedJune 30, 2009
Patent numberCA 1304342 C
Classification (IPC)F16K21/00 +2 more

Timeline

Timeline From CIPO dates

1989199219951998200120042007Application filedJuly 20, 1988Patent grantedJune 30, 1992Term endedJune 30, 2009

Sources & verification

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