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Expired Canadian patentCanada

Lubrication system for air compressor

CA 2083722 C · Owner: Kuc, Victor Daniel · Inventors: Kuc, Victor Daniel

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

In a lubricant delivery system for use in an air compressor having a rotatable crankshaft and an internal chamber, accessible by removal of an inspection plate having inner and outer surfaces, a positive displacement fluid pump mounted in the internal chamber and fluid lines for conveying lubricating fluid from the pump to a removable filter mounted on the outer surface of the inspection plate. Pressure relief means are associated with the filter for relieving pressure above a set point, and a distribution ring is adapted to circumscribe the crankshaft for introducing lubricating fluid to the crankshaft and from there to areas where lubrication is required.

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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

  • Filed November 25, 1992 and granted November 16, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 25, 2012.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 25, 2014.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledNovember 25, 1992
GrantedNovember 16, 1999
Term endedNovember 25, 2012
Patent numberCA 2083722 C
Classification (IPC)F01M3/00 +2 more

Timeline

Timeline From CIPO dates

1993199519971999200120032005200720092011Application filedNov 25, 1992Patent grantedNov 16, 1999Term endedNov 25, 2012

Sources & verification

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