Simple gas shaft sealing device with flexible rotor
CA 2100230 C · Owner: Bear, Clayton · Inventors: Bear, Clayton; Evenson, Robert S.; Peterson, Robert Arvid
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
This invention relates to a lubricating film type gas seal having a stationary sealing ring (stator) with a, radially extending sealing face and a rotating mating seal component (mating rotor) with a radially, extending sealing face. The present seal has a reduced number of components and is greatly, simplified from working seals described in prior art. The mating rotor is deliberately flexible, and, hence it may distort (tilt) throughout an angular range during hydrostatic and hydrodynamic, operation and is dependent on rotational speed pressure, temperature and is , also a function of its material and geometric properties. The stationary ring sealing face complies to and follows …
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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 July 9, 1993 and granted April 2, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 9, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 9, 2015.
- 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.