Track pin assemblies and seals therefor
CA 1064553 A · Owner: Chicago Rawhide Manufacturing Co. · Inventors: Woods, William J.; Morley, James P.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An end face seal especially adapted for use in severe service environments such as for sealing track pins of crawler type tractors. The seal includes a primary annular seal, having a radially extending flange portion for contacting a mating surface in face sealing engagement and an axially extending flange portion and, a secondary annular sealing member positioned in use about the axial flange portion. The cross section of the secondary annular sealing member is generally parallelogramshaped in an unstressed condition. The secondary member is made from a relatively soft rubber and the primary seal ring is made from a relatively hard rubber. In use the, inner diameter of the primary ring is …
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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 October 16, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 16, 1996.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.