Julian Marciniec

US Patent:

7607346, Oct 27, 2009

Filed:

Jun 6, 2008

Appl. No.:

12/156815

Inventors:

Andrzej Z. Oboza - Moorpark CA, US
Julian Marciniec - Burbank CA, US

International Classification:

B60C 23/02

US Classification:

731468

Abstract:

A tire pressure indicator (TPI) () that provides a method by which the air pressure in vehicle tires can be easily and reliably checked to determine if the tires are optimally inflated. The TPI () is comprised of a valve core () that replaces a conventional tire-valve core that is inserted into a vehicle tire stem (). The valve core () includes a diaphragm () that controls the vertical displacement of a plunger shaft () that controls the contact position of a switch (S). From the switch (S) a high or a low tire-pressure signal is transmitted to a tire pressure monitoring unit (), from where an individual can observe and correct the tire pressure. The TPI () features a structure and a method by which false tire pressure signals caused by changes in ambient temperature and normal tire temperature fluctuations are eliminated.