Quick exhaust valve
CA 2210074 C · Owner: Kawaei Co. Ltd. · Inventors: Satsu, Takehiko
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention provides a quick exhaust valve which allows compressed air to be smoothly supplied to and discharged from an air bag, which operates reliably even at low pressure or small quantity of air, and which is capable of a quick exhaust of air. A valve box (11) has an opening (18) for connecting an exhaust port (17) and an air bag (A) with each other, and an inlet port (16) for compressed air. In this valve box (11) a valve body (13) comprising an, opening/closing piece (20) for the exhaust port (17) and an opposing piece (21) for the inlet port (16) is incorporated so as to be movable in a direction in which the exhaust port (17) is opened and closed. The opening/closing piece (20) …
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 July 8, 1997 and granted October 7, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 8, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 8, 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.