Security valve assembly
CA 2197855 C · Owner: Tilp, Joseph · Inventors: Tilp, Joseph; Eckel, John
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Difficulties with accessibility to a valve and the entry of precipitation into a locking mechanism for the valve are eliminated in a security valve assembly that includes a valve body (22), (100) including a pair of spaced ports (12) (18); (102), (104) with a passage (38) (106) extending between the ports. A, valve member (26) (110) is rotatable within the body between an open position and a closed position and may be rotated by an actuator (32) (118). The body, (22), (100) includes a lock receiving chamber (50) (130) for removably, receiving a lock (52) (136) in a direction generally transverse to the passage (38), (106).
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 February 18, 1997 and granted April 18, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 18, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 18, 2019.
- 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.