Double-plate control device
CA 1106732 A · Owner: Hemscheidt (Hermann) Maschinenfabrik G.M.B.H. & Co. · Inventors: Krieger, Karl
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
1 -, TO ALL WHOM IT MAY CONCERN:, BE IT KNOWN THAT I KARL KRIEGER, a citizen of the, German Federal Republic of Domagkweg 66, 5600 Wuppertal 1, German Federal Republic have invented a certain new and useful DOUBLE-PLATE CONTROL DEVICE, of which the following is a specification:- ABSTRACT OF THE DISCLOSURE, A control device serves to control the fluid flow to and from double-acting rams, especially the rams of mining machinery, the control device having various internal ducts which are defined between two plates connected together. One of the two plates (a duct plate) has a main face formed with channels, some of which radiate outwardly from a ring of bores, and two of which are 'T'-shaped …
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 August 11, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 11, 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.