Externally-adjustable split stationary elastomer energized seal
CA 2004636 A1 · Owner: Nuraseal Co. Ltd. · Inventors: Drumm, Kevin R.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A novel externally-mounted stationary-design, self-aligning, rotary face-seal which is usually fully split is provided for securement to a rotatable member extending through a mounting plate secured to the housing of a particular piece of equipment. The externally-mounted stationary-design, self-aligning, rotary face-seal includes a rotor, fluid-tightly fitted and secured onto the rotatable member. A stator is provided which is urged into rotatable sealing contact with the rotor by means of a resilient operator. The resilient operator which may be e.g. a cylind-, rical elastomeric energizer or a plurality of pre-loaded compression springs, captured on anti-rotation pins is disposed between, …
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
- Filed December 5, 1989. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended December 5, 2009.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 5, 2011.
- 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.