Device for monitoring maintenance and adjustment of pressure in a tire
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United States of America Patent
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Oct 10, 2006
Grant Date -
Jun 16, 2005
app pub date -
Dec 5, 2002
filing date -
Dec 11, 2001
priority date (Note) -
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Abstract
Device for monitoring, maintenance and/or adjustment of pressure in a tire includes the chamber with shape memory deformable for the period of application of external mechanical forces when the tire rolls on the road surface, connected valve with the inside space of the tire and valve with the outside environment. At least one wall of the chamber is adjacent to the inside wall of the tire or is a part of the inside wall of the tire. Furthermore, the device operates on the peristaltic pump principle consisting of the chamber, which is deformable up to the zero cross section. At least one chamber with block with shape memory is freely open at one end and equipped with at least one valve at the other end or next to it. The minimum volume of the part of the chamber at the end equipped with the internal valve or external valve is from 1 to 80% of the total maximum volume of the chamber.
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