Fluid-powered submersible sampling pump
CA 1187331 A · Owner: Bennett, Robert W. · Inventors: Bennett, Robert W.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A small diameter fluid-driven pump for subterranean fluid sampling, and including an elongated cylindrical body formed by a centrally disposed control valve block assembly and a pair of hollow motor piston chambers on opposite sides of the valve block and joined thereto. Interconnected motor pistons are reciprocably disposed in the motor piston chambers, and each is connected to a pump piston. Each pump piston works within an axial bore in a tubular pump housing. The pump housings are secured to the opposite ends of the cylindrical body. A pump valve assembly is secured to the end of each pump housing and each includes intake, and discharge valves. Within the centrally disposed control …
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
- Granted May 21, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 21, 2002.
- 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.