Articulated coupling
CA 1278463 C · Owner: Engle, Thomas H. · Inventors: Engle, Thomas H.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An articulated-coupling having a center coupling and a plurality of side bearings or couplings coaxial along a lateral axis to facilitate yaw and pitch between two cars while restricting roll. The side bearing each have a cylindrical member on one car received in a cylindrical recess associated with another car. The center coupling includes a mating of two spherical members with one of the members longitudinally movable to allow pitch. The axis of the cylindrical side bearings are coaxial and include the center of the spherical center coupling.
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 January 2, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 2, 2008.
- 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.