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Expired Canadian patentCanada

Limited expansion vapor cycle

CA 1180196 A · Owner: Cosby, Thomas · Inventors: Cosby, Thomas

CIPO record

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Abstract From the Canadian patent

An apparatus and method for recycling or maintaining the latent heat of vaporization in work producing cycles such as the Rankine cycle by eliminating phase changes by replacing the condenser in such cycles with a compressor and restricting or limiting the expansion to reduce compressor work requirements. The standard compound turbine prevalent today consisting of a single Curtis stage in tandem with pressure compounded stages has been replaced with several two-row Curtis stages. An alternative embodiment utilizes one or several two-row Curtis stages and a condenser as in the Rankine cycle but limits the expansion maintaining a relatively high pressure typical in exhaust from this type of …

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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 2, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 2, 2002.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledApril 5, 1982
GrantedJanuary 2, 1985
Term endedJanuary 2, 2002
Patent numberCA 1180196 A
Classification (IPC)F01K13/00

Timeline

Timeline From CIPO dates

1983198519871989199119931995199719992001Application filedApril 5, 1982Patent grantedJan 2, 1985Term endedJan 2, 2002

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