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Expired Canadian patentCanada

Journal mounted rotary joint

CA 1282088 C · Owner: Jackson, Eldon D. · Inventors: Jackson, Eldon D.

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 rotary joint for a rotating heat exchanging drum directly attached to the end of the drum journal utilizes a flange and adapter to mount a seal on the journal and the joint body is fixed with respect to the journal and supports a seal plate in which an annular seal is biased toward the journal mounted plate by springs. The body mounted seal includes differential pressure area surfaces to balance the fluid pressures imposed thereon and the, springs are isolated from the fluid within the body. The joint eliminates metal-to-metal engagement of moving parts, and the seals may be readily replaced when worn.

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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 March 26, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 26, 2008.
  • 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 31, 1986
GrantedMarch 26, 1991
Term endedMarch 26, 2008
Patent numberCA 1282088 C
Classification (IPC)F16L27/08 +2 more

Timeline

Timeline From CIPO dates

19871990199319961999200220052008Application filedJan 31, 1986Patent grantedMarch 26, 1991Term endedMarch 26, 2008

Sources & verification

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