Compressed air-distributing device and valve for use in the device
CA 2241702 C · Owner: Nitto Kohki Co. Ltd. · Inventors: Nakao, Haruki
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A device for distributing compressed air from a compressed air source to a plurality of apparatus that use compressed air. The device comprises a housing having valve chambers, inlet ports for connecting the valve chambers to the compressed air source outlet, ports, and exhaust ports communicating with outside the device. Each outlet port is adapted to communicate with at least one of the apparatus that use compressed air. Spherical valve bodies movably are provided in the valve chambers, respectively, each for closing one inlet port and one exhaust port. Shafts extend from the valve bodies, respectively. Each shaft has an end portion passing through one exhaust port and protruding from the …
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 June 24, 1998 and granted December 31, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 24, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 24, 2020.
- 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.