A - Human Necessities – 01 – B
Patent
A - Human Necessities
01
B
97/128
A01B 73/00 (2006.01) A01B 73/04 (2006.01)
Patent
CA 1193130
COMPACT, TRIPLE-HINGED AGRICULTURAL IMPLEMENT TOOL BAR ABSTRACT A hydraulically actuated, triple-hinged tool bar comprised of four independently positioned sections is dis- closed. A first outer section is flexibly coupled to one end of a center section of the tool bar while to the other end thereof is flexibly coupled an intermediate section, the length of which is less than that of the first outer section. A second outer section is flexibly coupled to the outer end of the intermediate section providing a lower profile when all sections of the tool bar are in the retracted, or non working position. Positioning control between the center section and the first outer and intermediate Sections is provided by respective hydraulically-actuated cylinders while a third hydraulic cylinder coupling the intermediate and second outer section dampens the vertical movement of the latter for in- creased stability in the working and non-working positions. Spacers located between the canter and first outer sections and between the first and second outer sections provide for the proper positioning and stability of the various sections when retracted.
417635
Osler Hoskin & Harcourt Llp
Wetherell Ronald D.
LandOfFree
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