Wireless tire pressure sensing system

Details Wireless tire pressure sensing system Wireless tire pressure sensing system

2007-04-10

2007-04-10

Swarthout, Brent A. (Department: 2612)

Communications: electrical

Land vehicle alarms or indicators

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

C073S146400, C340S445000, C340S945000

Reexamination Certificate

active

10647487

ABSTRACT:
A wireless tire pressure sensing system for an aircraft comprises: dual resonant circuits mounted to a wheel of the aircraft, each resonant circuit comprising: a variable capacitance sensor and a wire loop of a predetermined inductance coupled thereto, one capacitance sensor for monitoring the pressure of a tire mounted to the wheel, and the other capacitance sensor operative as a reference to the one capacitance sensor; an interrogating circuit magnetically coupleable to the dual resonant circuits and operative to induce magnetically a variable frequency current in the dual resonant circuits, the one resonant circuit responding to the induced current with an E-field signal at a first resonant frequency commensurate with the capacitance of the one sensor, and the other resonant circuit responding to the induced current with an E-field signal at a second resonant frequency commensurate with the capacitance of the other sensor; a receiving circuit E-field coupleable to the dual resonant circuits and operative to receive the E-field signals at the first and second resonant frequencies and to generate first and second signals representative thereof; and a processing circuit coupled to the receiving circuit for processing the first and second signals to generate a compensated pressure reading of the tire. The pressure sensing system may be modified to provide and/or include wheel speed sensing.

REFERENCES:
patent: 2274557 (1942-02-01), Morgan et al.
patent: 3662335 (1972-05-01), Fritze
patent: 3723966 (1973-03-01), Mueller et al.
patent: 3911434 (1975-10-01), Cook
patent: 3938077 (1976-02-01), Nakanishi et al.
patent: 4006449 (1977-02-01), Sumi
patent: 4072926 (1978-02-01), Shimahara et al.
patent: 4074227 (1978-02-01), Kalmus
patent: 4389884 (1983-06-01), Agulia
patent: 4409586 (1983-10-01), Hockstein
patent: 4588978 (1986-05-01), Allen
patent: 4717905 (1988-01-01), Morrison et al.
patent: 4953393 (1990-09-01), Galasko et al.
patent: 5227798 (1993-07-01), Hildebrand
patent: 5260683 (1993-11-01), Tanaka et al.
patent: 5274355 (1993-12-01), Galan
patent: 5542118 (1996-07-01), Warnagiris
patent: 5703576 (1997-12-01), Spillman, Jr. et al.
patent: 6053038 (2000-04-01), Schramm et al.
patent: 6215393 (2001-04-01), Delaporte
patent: 6362732 (2002-03-01), Konchin et al.
patent: 6378360 (2002-04-01), Bartels
patent: 6553820 (2003-04-01), Tsagas et al.
patent: 6609419 (2003-08-01), Bankart et al.
patent: 2001/0008083 (2001-07-01), Brown
patent: 2002/0095980 (2002-07-01), Breed et al.
patent: 2003/0006890 (2003-01-01), Magiawala et al.
patent: 2003/0006893 (2003-01-01), Dunbridge et al.
patent: 2004/0267493 (2004-12-01), Pinard et al.
patent: 2272019 (1999-11-01), None
patent: 199 22 707 (2000-01-01), None
patent: 198 53 135 (2000-05-01), None
patent: 2 065 896 (1981-07-01), None
patent: 63 306905 (1988-12-01), None
patent: WO 03/038447 (2003-05-01), None
International Search Report for PCT/US2004/027443.
Written Opinion for PCT/US2004/027443 mailed Jan. 12, 2006.

Affiliated with

Also associated with

Rating

Wireless tire pressure sensing system does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Wireless tire pressure sensing system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Wireless tire pressure sensing system will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3768417