Pressure and flow compensated control system with constant torque and viscosity sensing over-ride
CA 1104033 A · Owner: Commercial Shearing, Inc. · Inventors: Locher, Donald A.; Byers, James O. Jr.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A variable displacement fluid pump system is provided having a pressure and flow compensated control system with constant torque and viscosity sensing over-ride acting on the control system. The system includes a viscosity sensing means receiving fluid from the pump and acting on the control means to over-ride the control means to reduce the pump displacement when the viscosity of fluid in the pump exceeds a predetermined value, a pressure sensing means receiving fluid from the pump acting on the control means to over-ride the control means and reduce pump displacement when the pressure in the system exceeds a predetermined value, at least one pressure compensated work port valve receiving …
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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 June 30, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 30, 1998.
- 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.