Color change valve assembly
CA 2038124 A1 · Owner: Ransburg Corporation · Inventors: Medlock, D. William; Alexander, Kevin L.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A seal assembly for sealing a valve needle having a generally circular cross section transverse to its longitudinal axis. The needle is situated inside a valve assembly including a housing having a longitudinal axis. The needle controls flow of a fluid from a fluid supply line to a fluid outlet passage. The seal assembly comprises a seal positioner including a cylindrical body portion surrounding the needle and having a first end, a second end, and an inner side wall having a cross section larger than the cross section of the needle to define a space between the inner side wall and the needle. The seal positioner also includes a partition for coupling the body portion to the needle to align …
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 12, 1991. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended March 12, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 12, 2013.
- 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.