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Expired Canadian patentCanada

Shaft support system

CA 1292375 C · Owner: Nelson, Bertel S. · Inventors: Nelson, Bertel S.

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 phase adjusting mechanism in which input and output shafts, rotatable at like speeds and directions are positively intercoupled by helical spline members constructed and arranged so that a female spline member is shiftable axially relative to a male spline member to counter rotate the shafts through a limited range of relative adjustability in which support of adjacent opposed ends of the shafts is effected by an internal backbone support extending coaxially between the shafts to provide thrust and radial bearing support therefor. Adjustment mechanism for shifting the spline members is provided along with an indicator mechanism for indicating the degree of shaft phase adjustment. A …

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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.
FiledMarch 31, 1988
GrantedNovember 26, 1991
Term endedNovember 26, 2008
Patent numberCA 1292375 C
Classification (IPC)F16H35/08 +1 more

Timeline

Timeline From CIPO dates

1989199119931995199719992001200320052007Application filedMarch 31, 1988Patent 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.