Injection apparatus
CA 1049788 A · Owner: Her Majesty The Queen In Right Of Canada As Represented By The Minister Of National Defence Of Her Majesty'S Canadian Government · Inventors: Thouin, Marcel; Maidment, Peter E.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Apparatus for use in controllably injecting contaminant material into a liquid flowing through a conduit in a liquid flow system. The apparatus has a reservoir section and an injection section with a central section optionally provided for interposing between the reservoir section and the injection section when low and/or slow rates of injection are desired. The reservoir section is a graduated tubular member having a detachable cap with an adjustable pressure relief valve mounted therein. The reservoir chamber merges at the opposite end, into a truncated, conically shaped portion in a body detachably mountable on the injection section or intermediate section, as the case may be. When …
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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 March 6, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 6, 1996.
- 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.