Boom spraying apparatus
CA 1290293 C · Owner: Hagon, John W. · Inventors: Little, Henry Michael Telfer; Hagon, John W.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A vehicle having a boom assembly for applying herbicides pesticides, or fertilizers in fluid form i.e. as liquid, powders or granules, over tracts of land has opposite, end-portions of the boom projecting away from respective opposite sides of the vehicle. Each end-portion is connected by a universal joint to a central frame which is fixed to the vehicle, and its weight is supported by guys which are tensioned by a spring and interconnect the two boom end-portions. A spring leaf skid is provided under each boom end-portion and bears on the ground only if the vehicle rocks. The guying is so arranged that rocking of the vehicle in one direction causes the slack from the boom end-portion whose …
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 October 8, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 8, 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.