Fluid seal device
CA 1235163 A · Owner: Caterpillar Inc. · Inventors: Ballheimer, Benny; Amdall, John K.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
9-, Fluid Seal Device, Abstract, A fluid seal device has a plurality of non-contacting fluid seals located at the operative interface between a stationary member and a rotatable member for preventing the leakage of a fluid from a fluid chamber. The first of the non-contacting seals is a labyrinth seal located adjacent the fluid chamber. The second non-contacting seal is a spiral groove located adjacent and in serial relation to the labyrinth seal. A third non-contacting seal is a fluid slinger which is located between the fluid chamber and the labyrinth seal for directing fluid away from the path of operative interface. The fluid seal device eliminates friction and increases the life …
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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 April 12, 1988. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 12, 2005.
- 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.