Pinch valve
CA 2056033 C · Owner: Horiba, Ltd. · Inventors: Terada, Kunio; Oku, Narihiro; Horii, Yoshio
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention relates to a pinch valve which closes the passage of the soft tube by pressing a slider provided so as to advance into and retract from a housing against a part of the soft tube located within the housing. The slider is provided with a detachable engaging member. The engaging member engages with a part of the housing to position the slider so that the slider is not pressed against a normally closed soft tube. This provision is used to prevent the soft tube from plastic deformation and damage in a non operational condition of the valve.
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 November 22, 1991 and granted November 8, 1994. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 22, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 22, 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.