Miniature volumetric pump
CA 1107143 A · Owner: Societe Nationale Elf Aquitaine · Inventors: Veron, Andre; Bimond, Jean-Pierre; Etcheverria, Jean-Michel
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A C T, "MINIATURE VOLUMETRIC PUMP" A miniature volumetric pump comprising a hollow cylinder and a piston moving in a straight line relative to the cylinder. The pump is characterised in that the piston is stationary and secured to the pump frame and in that the cylinder can move in a straight line with respect to the frame and is adapted to receive the piston in sealing-tight manner in its bore the pump comprising means for moving the cylinder. Use for determining the thermodynamic characteristics of oil effluents.
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 August 18, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 18, 1998.
- 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.