Automatic sprinkler activator
CA 2000751 A1 · Owner: Byrne, Barry F. · Inventors: Byrne, Barry F.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An activator assembly for an automatic sprinkler head having a fluid flow control valve comprising releasable lever means serving to hold the valve closed, and a control assembly including a fusible element heat, conductive fin means and a retaining ring all mounted upon an axial post the lever means abutting the retaining ring and being released by axial displacement of the retaining ring when the fusible element responds to a predetermined temperature.
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 October 16, 1989. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 16, 2009.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 16, 2011.
- 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.