Rollover apparatus for plows
CA 1079567 A · Owner: Filan, A. Laverne · Inventors: Filan, A. Laverne; Filan, Alton N.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract of the Disclosure A rollover mechanism for pivoting the plow frame of a two-way gang plow between alternate operative field positions angularly spaced 180 degrees apart relative to a center axis on a supporting three point hitch framework. The plow frame is further positionable in an upright attitude for travel purposes. Movement of the plow frame relative to a supporting wheeled carrier or three point hitch framework is accomplished through a crank arm connected to a plow frame pivot shaft. An elongated lever arm is pivotally connected both to the crank arm and to an extendable hydraulic cylinder assembly mounted to the supporting three point hitch framework. An intermediate link …
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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 17, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 17, 1997.
- 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.