Safety valve for packages
CA 1114337 A · Owner: Beghini, Pierre G. · Inventors: Beghini, Pierre G.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A safety valve meant to be fitted on an impervious wall separating two separate spaces. According to the invention the valve comprises on, the one hand, a first stationary and relatively rigid part which is meant to be fixed on the wall and comprises a first cylindrical sleeve and on the other hand a second, part at least partly flexible and resilient adapted to be, connected with the first fixed part and comprising a second cylindrical sleeve, co-axial to the first and coming into sealing contact thereon or moving away therefrom depending on the resilient deformations to which the second part is at least partly subjected because of the pressure differences existing on either sides of the …
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
- Granted December 15, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 15, 1998.
- 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.