Measuring and testing – Tire – tread or roadway
Reexamination Certificate
2006-10-10
2006-10-10
Lefkowitz, Edward (Department: 2855)
Measuring and testing
Tire, tread or roadway
Reexamination Certificate
active
07117731
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.
REFERENCES:
patent: 4432405 (1984-02-01), Grushkin
patent: 4922984 (1990-05-01), Dosjoub et al.
patent: 5052456 (1991-10-01), Dosjoub
patent: 6894607 (2005-05-01), Claussen et al.
patent: 98 536 (1897-03-01), None
patent: 2 106 978 (1998-03-01), None
Allen Andre
Egbert Law Offices
Lefkowitz Edward
LandOfFree
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