Pipework for sprinkler systems
CA 2185997 C · Owner: Vieregge, Uwe · Inventors: Vieregge, Uwe
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to pipework (10, 12) for sprinkler systems comprising pipes (20 24, 26, 28, 32) leading from a supply line (14) conveying extinguishing liquid and displaceable about mutually parallel axes (44 46; 48, 50) with a union running from the supply line and an end pipe (28) to which a sprinkler head can be fitted. In order to ensure that the displaceable pipes are highly variable it is proposed that at least one of the pressurised displaceable pipes is a U-shaped pipe (20 26), the arms (18, 22) of which are connectors for at least one further pipe (24, 28) and/or the union (16) which is pressure-tightly secured to the U-shaped pipe via plug-in connectors (34 36, 38, 40, 42).
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 13, 1995 and granted August 31, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 13, 2015.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 13, 2017.
- 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.