Sensor-controlled hydraulic system with electroviscous fluids
CA 1292130 C · Owner: Oppermann, Gunter · Inventors: Oppermann, Gunter; Feld, Fritz
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A sensor-controlled hydraulic system with electroviscous fluids, Abstract of the Disclosure, A system-integrated motion sensor is provided fur monitoring and adjusting the EVF system. The motion sensor is based on the concept that, with the aid of the electrodes (4,5) already present, which are used fur the viscosity control of the EVF in the hydraulic system an, electric current signal is simultaneously produced which is directly related to the rate of flow of the EVF between the electrodes which are either stationary or can be displaced with respect to each other. Thus the motion sensor consists of the electrodes (4,5) with the intermediate EVF layer (1) and a circuit (9,10,11) connected …
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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 November 19, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 19, 2008.
- 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.