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Expired Canadian patentCanada

Radiator valve

CA 1260358 A · Owner: Danfoss A/S · Inventors: Jensen, Hans-Erik K.; Bertelsen, Iver S.; Jýrgensen, Hans

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

Abstract, In a radiator valve, an insert (21) is inserted from the free end of a connecting passage. It comprises an outer peripheral surface (25) which abuts against at least two axially offset positions at the inner peripheral surface of the connecting passage for sealing and retaining purposes. Further there is at, least one throttle passage (K) which passes through a dividing wall (24), extends substantially in the direction of the connecting passage and has a cross section which converges at the inlet side and then remains substantially constant over a length (Z)exceeding the smallest internal width (d). In particular the throttle passage (K) has a sharp -edged outlet edge (29). In …

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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 September 26, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 26, 2006.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledSeptember 28, 1984
GrantedSeptember 26, 1989
Term endedSeptember 26, 2006
Patent numberCA 1260358 A
Classification (IPC)F16K1/52 +2 more

Timeline

Timeline From CIPO dates

19851988199119941997200020032006Application filedSep 28, 1984Patent grantedSep 26, 1989Term endedSep 26, 2006

Sources & verification

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