Semi-hollow pneumatic tire for agricultural machines, in particular for sowing machines
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United States of America Patent
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Jan 15, 2019
Grant Date -
Oct 16, 2014
app pub date -
Apr 10, 2014
filing date -
Apr 12, 2013
priority date (Note) -
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Abstract
The semi-hollow pneumatic tire has an axis of revolution and comprises a sole mountable on the periphery of a rotary support, a tread opposite the sole, and two sidewalls each connecting the sole and the tread so as to form together a cover which defines an uninflated chamber inside the pneumatic tire. The tread has a concave profile according to a plane passing through the axis of revolution, and the pneumatic tire comprises two annular ridges which extend, respectively, the two sidewalls in the outer radial direction and which are connected to two opposite ends of the tread, the two annular ridges defining, respectively, two principal directions which intersect at an acute angle so that, when the pneumatic tire comes into contact with soil, by being subjected to a vertical load, the two annular ridges move closer together locally.
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