Exterior pipe, side mounted, fluid flow control valve
CA 2037597 A1 · Owner: Ottens, Rex D. · Inventors: Ottens, Rex D.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The fluid or liquid flow control valve is mounted to the exterior or external surface of a section of the pipe that is in tact or not damaged area. The pipe is generally under pressure from the internal fluid. The features of this invention are to reduce danger from work in hazardous conditions and for speed and simplicity in an emergency shut off of liquid flow. The device has an interior boring mechanism that is the foremost edge attached directly to the plug or shut off valve. The device basically drills or bores and then plugs or closes off the hole it has just bored. These procedures occur internally of the invention or device or mechanism and no fluid escapes the pipe at the valve …
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
- Filed March 6, 1991. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended March 6, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 6, 2013.
- 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.