Hydraulic control and drive device for rotary heat exchanger
CA 1136956 A · Owner: Bergkvist, Lars A. · Inventors: Bergkvist, Lars A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A control and drive device for rotary heat exchangers. Drive means are provided for a rotary heat exchanger which comprises a hydraulic motor and a pump, operated by an electric motor, supplying the hydraulic motor with a pressure medium. A valve is provided between the pump and hydraulic motor. The valve is controlled by a temperature scanning member so that the rate and pressure of the pressure medium supplied to the hydraulic motor, and thus the rotary speed of the heat exchanger is con-, trolled by the temperature scanned.
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 December 7, 1982. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 7, 1999.
- 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.