Trip beam linkage
CA 1055767 A · Owner: Quanbeck, Sherman H. · Inventors: Quanbeck, Sherman H.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A trip beam linkage for moldboard plow or other earth working tools which trips to clear obstacles such as rocks and the like and uses a sturdy, compact and reliable folding tripping linkage which permits reliable high clearance trip-, ping using tension springs. The linkage lengths are selected to permit reliance on spring force for initial holding which, is reliable. The folding linkage is positioned so spring expansion is kept to a minimum during tripping. The linkage can be adjusted to permit aligning the earth working tool. The working position of the linkage is determined by an adjustable stop.
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 5, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 5, 1996.
- 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.