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Expired Canadian patentCanada

Device for sealing shaft bearings or shaft-bearing housings

CA 1302467 C · Owner: Hasenrath, Peter · Inventors: Senft, Helmut; Hasenrath, Peter

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

The present invention relates to a device for sealing shaft bearings or shaft-bearing housings as used in particular, for self-aligning roller bearings used in rough-pressing rollers or the like, these incorporating a ring or sleeve-advantageously of stainless steel--that encircles the shaft and having at least one annular projection on the outersurface, said projection extending into at least one annular groove at least one end of the bearing housing. According to the present invention what is involved is a, bearing housing in particular a series or production bearing housing for operating conditions that make great demands on the bearing seal, that is economical to produce. According to …

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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 June 2, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 2, 2009.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledSeptember 24, 1987
GrantedJune 2, 1992
Term endedJune 2, 2009
Patent numberCA 1302467 C
Classification (IPC)F16C13/02 +2 more

Timeline

Timeline From CIPO dates

19881991199419972000200320062009Application filedSep 24, 1987Patent grantedJune 2, 1992Term endedJune 2, 2009

Sources & verification

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