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Expired Canadian patentCanada

Valve with presetting of the amount of throughflow

CA 1231926 A · Owner: Danfoss A/S · Inventors: Pedersen, Svend P.; Andresen, Erik E.

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 valve with presetting of the amount of throughflow particu-, larly a thermostatic valve for hot water central heating comprises a cylindrical housing bore (9) of which the base (8) comprises the valve seat (2) and the cylindrical circumferential surface (10) comprises a fixed opening (11) communicating with a connector (12). An insert (14) is guided only in the housing bore (10) and is connected by way of a rotary coupling (38) which permits play to a setting element (15) which serves for rotary adjustment. The circumferential wall (41) of the insert (14) abuts the base (?) with its end under spring force and circumferentially bounds a control orifice (42) which co-operates with the fixed …

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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 January 26, 1988. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 26, 2005.
  • 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 5, 1984
GrantedJanuary 26, 1988
Term endedJanuary 26, 2005
Patent numberCA 1231926 A
Classification (IPC)F16K11/00 +2 more

Timeline

Timeline From CIPO dates

1985198819911994199720002003Application filedJan 5, 1984Patent grantedJan 26, 1988Term endedJan 26, 2005

Sources & verification

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