Loader coupler
CA 1303554 C · Owner: Wain-Roy, Inc. · Inventors: Arnold, Carroll H.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An integrated hydraulic quick change side tilting coupler for attaching and detaching a tool for use on wheel and track loaders and material handlers. A coupler frame is hingedly mounted at the end of the loader arm for swinging in a vertical plane actuated by the loader hydraulic system. A radius plate on the frame has an upwardly projecting curved rim adapted to engage two bearing points on the tool for mounting and dismounting the tool. A central pivot pin projects forwardly from the frame and fits a bore in the tool. The axis of the pin is on the focal point of curvature of the plate permitting pivoting of the tool and consequent side-tilting of the tool about that axis. When the frame …
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 June 16, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 16, 2009.
- 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.