Valve apparatus and pneumatically driven diaphragm pump incorporating same
CA 2509996 C · Owner: Towne, Lloyd · Inventors: Towne, Lloyd; Headley, Thomas R.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A valve apparatus and pneumatically driven diaphragm pump incorporating same having a valve body having a longitudinal axis and an actuator having an axis with a first end and a second end. The first and second ends have first and second diaphragms respectively, disposed thereon and located transversely to the axis of the actuator. Upon inserting the actuator into the valve body the first and second diaphragms define wall portions of first and second chambers at the first and second ends of the axis of the actuator respectively, and a chamber defined between the diaphragms.
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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 14, 2005 and granted January 22, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 14, 2025.
- Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
- 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.