Fluid flow regulating valve
CA 1075998 A · Owner: Industrie Pirelli Societa Per Azioni · Inventors: Ferrentino, Antonio
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A valve for controlling the rate of flow of a fluid, particularly oil for an electric cable, in which a cavity in a valve body is subdivided into two compartments by a flexible membrane assembly which has a valve element which controls oil flow through an opening in a wall of the second compartment. Fluid under pressure is supplied to the first compartment. The position of the valve element depends on the ratio of fluid pressures in the two compartments which is controlled by a further manually settable valve element in a conduit interconnecting the first and second compartments for fluid flow. The further valve element controls laminar flow of the fluid through an opening in the path of …
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 April 22, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 22, 1997.
- 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.