Hydraulic pressure regulating arrangement
CA 1263833 C · Owner: Sugano, Kazuhiko · Inventors: Ueki, Akihiro; Sugano, Kazuhiko; Shibayama, Takashi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Herein disclosed is a hydraulic pressure regulating arrangement for generating a servo actuating fluid pressure under which hydraulic fluid is supplied to a servo motor. This arrangement comprises a pressure regulating valve having a valve spool movable in response to hydraulic fluid pressure building up in a feedback chamber in such a direction as to increase opening degree of a drain port opening to a servo actuating fluid supply line as the pressure in the feedback chamber increases. A reservoir is provided which communicates with the servo actuating fluid supply line. A flow restrictor is disposed between the reservoir and the servo actuating fluid supply line and restricts flow of …
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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 12, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 12, 2006.
- 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.