Ratio valve to control unloading of modulating relief valve
CA 1269913 C · Owner: Blake, William W. · Inventors: Blake, William W.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Ratio Valve to Control Unloading of Modulating Relief Valve, Fluid systems for controlling clutch engagement normally have modulating pressure relief valves to aid in smooth clutch engagement. It is also desired in such systems o ensure that the system pressure is reduced to a low level so that the load piston is fully reset prior to initial engagement of the newly filled clutch. In this arrangement in order, to ensure that the load piston is fully reset a, mechanism is provided which establishes a ratio between the pressure of the fluid being directed to the clutch and the pressure of the fluid acting on the load piston of the modulating pressure relief valve so that the pressurized fluid …
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 June 5, 1990. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 5, 2007.
- 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.