Safety cut-out
CA 2065384 C · Owner: Pipelife Rohrsysteme Gesellschaft M.B.H. · Inventors: Masloff, Peter
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
In a safety closing device for gas pipe systems (1) with a valve (2) which is capable of being pressed against a valve seating (9) in a housing, especially a tubular housing the valve (2), as a, disc valve capable of being moved in the axial direction of the tubular housing (1), is movably supported against the force of a spring (5). The cross-section area of the valve head (7) is made smaller than the clear cross section of the housing (1) and is kept at a distance from the inner wall of the tubular housing and, furthermore, the gas supply connection (20) is provided on the side of the valve head (7) facing away from the spring (5) (fig.1).
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 July 3, 1991 and granted March 16, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 3, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 3, 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.