Hydraulic valve system
CA 1109296 A · Owner: S.R.M. Hydromekanik Aktiebolag · Inventors: Ahlen, Karl G.; Ketola, Rainer B.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A hydraulic valve system for controlling operation of a motor vehicle gear box comprising a plurality of multi way valves of the disc-type in which the first multi way valve conveys pressure fluid to either one of two consumers and drains the consumer to which fluid is not conveyed one of the two, consumers comprising a valve system having two or three of the said multi way valves, each of which is operable to supply pressure fluid to one or other of two further consumers and, means to interlock the said two or three multi way valves so as to permit connection to only one of four or six consumers at any one time.
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 September 22, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 22, 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.