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Expired Canadian patentCanada

Rotating conductive heat transfer device

CA 1292495 C · Owner: Honeywell Inc. · Inventors: Smith, Dennis W.

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 rotating conductive, heat transfer device is, provided. The device includes an outer race having an axis an, inner race coaxial with the outer race and a plurality of, bearing balls disposed in a radial direction between the inner race and the outer race. The device also includes a plurality of separators disposed alternately in a peripheral direction between the bearing balls. The device has a first track and a second track, supported by the inner race for supporting the, separators. The inner race has a first fixed, inner ring, portion with a first bearing surface and has a second, separable, inner ring portion with a second bearing surface. The outer race has a third bearing 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 November 26, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 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.
FiledJune 12, 1989
GrantedNovember 26, 1991
Term endedNovember 26, 2008
Patent numberCA 1292495 C
Classification (IPC)F16C19/20 +2 more

Timeline

Timeline From CIPO dates

1990199219941996199820002002200420062008Application filedJune 12, 1989Patent grantedNov 26, 1991Term endedNov 26, 2008

Sources & verification

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