Double sickle mechanism
CA 1100316 A · Owner: Hesston Corporation · Inventors: Clark, Stanley R.; Lohrentz, Howard R.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The Abstract Of The Disclosure Two sickles, each slightly longer than half the width of the swath taken by the mower are supported across the front of the mower for reciprocation in mutually opposite directions. Although the two sickles are located in the same vertical plane, they are situated in two different horizontal planes so as to permit overlap in the center during reciprocation. To further facilitate such overlap, the backing bar to which the knife sections of one sickle are attached is located on top of the sections, while on the other sickle the backing bar is located along the bottom of the sections. The sections are so arranged adjacent the inner ends of the sickles that even …
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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 May 5, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 5, 1998.
- 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.