Tire pressure indicator

Details Tire pressure indicator Tire pressure indicator

2006-03-28

2006-03-28

Wu, Daniel (Department: 2632)

Communications: electrical

Land vehicle alarms or indicators

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

C340S448000, C116S03400R, C152S152100, C073S146000

Reexamination Certificate

active

07019629

ABSTRACT:
A tire pressure indicator is disclosed including a housing having an inlet for air under pressure, a sealed chamber, the chamber containing a gas under pressure, a signaling device having an electrical power source arranged to generate an electrical signal indicative of a pressure difference between the inlet and the chamber, a flexible diaphragm separating the inlet and the chamber, the diaphragm positioned to extend into the chamber as pressure at the inlet increases, a connector operatively engaging the diaphragm and the signaling device to actuate the signaling device to generate the electrical signal, and a light source coupled to the signaling device to receive the electrical signal and generate a visual signal indicative of a pressure difference between the inlet and the chamber.

REFERENCES:
patent: 4049935 (1977-09-01), Gruber
patent: 4063057 (1977-12-01), Meisenheimer, Jr.
patent: 4726223 (1988-02-01), Huang
patent: 4954806 (1990-09-01), Hwang
patent: 5025244 (1991-06-01), Huang
patent: 5163320 (1992-11-01), Goshima et al.
patent: 5635691 (1997-06-01), Ballyns
patent: 6531960 (2003-03-01), Gladstone et al.

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