Precision inflation device

Details Precision inflation device Precision inflation device

2005-01-04

2005-01-04

Jules, Frantz F. (Department: 3617)

Communications: electrical

Land vehicle alarms or indicators

Internal alarm or indicator responsive to a condition of the...

C152S415000, C073S146200

Reexamination Certificate

active

06838983

ABSTRACT:
The invention provides a device for measuring the pressure of a tire. The device comprises a microcontroller configured to calculate a target pressure, a pressure sensor coupled to the microcontroller for measuring an internal pressure of the tire, a first temperature sensor coupled to the microcontroller for measuring an internal temperature of the tire, a user input coupled to the microcontroller for inputting a recommended pressure for the tire, a second temperature sensor coupled to the microcontroller for measuring an ambient temperature, and, a display coupled to the microcontroller for indicating the internal pressure of the tire and the target pressure. The microcontroller converts the recommended pressure into the target pressure based on a ratio of the internal temperature in Kelvin to the ambient temperature in Kelvin, such that a user is able to inflate and deflate the tire until the display indicates that the internal pressure is equal to the target pressure.

REFERENCES:
patent: 3494184 (1970-02-01), Raffaelli
patent: 6711955 (2004-03-01), Wilkerson, Jr.
patent: 20020105420 (2002-08-01), Yamagiwa et al.
patent: 20030227380 (2003-12-01), Piech et al.

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