Sealing device with stiffener
CA 2565786 C · Owner: Fisher Controls International Llc · Inventors: Boyd, Douglas, J.; Olberding, Jason, Gene
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A sealing device for increasing the stiffness of the seal is disclosed. It comprises a clamping portion configured to be rigidly coupled to a body of a fluid control device, and a flexible portion extending from the clamping portion and having a curved sealing surface configured to seal against a movable flow control member associated with the fluid control device wherein , the flexible portion is configured to have a first stiffness in a first flow direction and a second stiffness in a second flow direction.
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 March 31, 2005 and granted May 22, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 31, 2025.
- Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
- 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.