Coolant union with fluid actuated seal assembly
CA 2014558 C · Owner: Deublin Company · Inventors: Kubala, Zbigniew
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A rotating union including a seal assembly having a rotating seal member carried by the rotor a, non-rotating floating seal member carried by a fluid actuated assembly mounted in and keyed to the housing of the union, the fluid actuated assembly including a flexible diaphragm interposed in the fluid flow path and which is flexed responsive to fluid pressure through the union to move the non-rotating seal member into engagement with the rotating seal member the diaphragm, being unflexed in the absence of fluid pressure through the union whereby the non-rotating seal member is maintained out of engagement with the rotating seal member.
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 April 12, 1990 and granted December 8, 1998. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 12, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 12, 2012.
- 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.