Seal arrangements
CA 1089890 A · Owner: Patent & Inventions (P.I.) Ltd. · Inventors: Nussbaumer, Thomas
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A seal arrangement comprising three sealing rings. The first ring is intended to locate in a groove in a first machine element and has a bearing surface by which it is bearable against the base of the groove of the first machine element, and a surface spaced from its bearing surface. The second ring has a first bearing surface by which it is bearable against the spaced surface of the first ring and a second, bearing surface which is spaced from its first bearing surface contact-, able with surface portions of a second machine element and has an annular groove. The third ring is intended to locate in the annular groove of the second sealing ring and has a first bearing surface by which it is …
Read the whole patent
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 18, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 18, 1997.
- 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.