Liquid injecting method and apparatus
CA 1161644 A · Owner: Greene, George J. Jr. · Inventors: Greene, George J. Jr.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract of the Disclosure A liquid injector suitable for injecting a liquid into a flowline having a fluid under pressure therein in which a piston divides the interior of a hollow body into a power chamber and a pumping chamber with a piston rod extending through the pumping chamber to the exterior of the body liquid filling the pumping chamber, a discharge line from the pumping chamber through a valve to the flowline and a supply, line from the flowline to the power chamber the valve in the, supply line being controlled by the timed position of the piston. A method of injecting a liquid into a flowline including the steps of delivering pressure fluid from the flowline to a pressure …
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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
- Granted February 7, 1984. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 7, 2001.
- 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.