Valve arrangement with pressure balance
CA 2269593 A1 · Owner: Mannesmann Rexroth Ag · Inventors: Knoell, Burkhard; Rueb, Winfried
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention concerns a valve arrangement (1) for supplying in a manner , adapted to the pressure and volume flow at least one consumer which, via two , working connections (A1 B1, A2, B2) of a constantly adjustable directional control valve (4, 6), can be supplied with hydraulic fluid or connected to a tank (T). Associated with the two working connections (A1 B1, A2, B2) of the , valve arrangement (1) is a common pressure balance (16 18) whose piston (66) , is guided in an axially displaceable manner in an axial bore (32) in the directional control valve slide (12) such that when the directional control , valve (4 6) is suitably triggered, one of the two working connections (A1 B1, A2, …
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 October 20, 1997. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 20, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 20, 2019.
- 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.