Interconnecting valve for brake pipe, auxiliary reservoir, emergency reservoir and brake cylinder
CA 1269124 C · Owner: New York Air Brake Corporation · Inventors: Engle, Thomas H.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A valve in brake control equipment for a railway car for interconnecting the brake pipe, an auxiliary reservoir an, emergency reservoir and the brake cylinder cooperates with a sensor for a service signal, a release signal and an emergency signal pressure at its brake pipe port. With a service signal the brake cylinder and auxiliary reservoir are interconnected for, a release signal, the brake cylinder is connected to atmosphere and for an emergency signal, the brake cylinder is connected with the emergency reservoir.
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 May 15, 1990. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 15, 2007.
- 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.