U.S. patents available from 1976 to present.
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Method and apparatus for identifying remote sending units in a tire pressure monitor system of a vehicle using secondary modulation of wheel rotation

Patent 6417766 Issued on July 9, 2002. Estimated Expiration Date: Icon_subject January 11, 2021. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Patent References

Low tire warning system
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Inventor: Betts ,   et al.

Alarm system for monitoring pressurized vehicular tires
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Method and apparatus for tire pressure monitoring and for shared keyless entry control
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Active integrated circuit transponder and sensor apparatus for sensing and transmitting vehicle tire parameter data
Patent #: 5483827
Issued on: 01/16/1996
Inventor: Kulka, et al.

Remote tire pressure monitoring system employing coded tire identification and radio frequency transmission, and enabling recalibration upon tire rotation or replacement
Patent #: 5600301
Issued on: 02/04/1997
Inventor: Robinson, III

Device for monitoring the air-pressure in pneumatic tires fitted on vehicle wheels
Patent #: 5602524
Issued on: 02/11/1997
Inventor: Mock, et al.

Wireless vehicle parameter monitoring system
Patent #: 5661651
Issued on: 08/26/1997
Inventor: Geschke, et al.

Transponder and sensor apparatus for sensing and transmitting vehicle tire parameter data
Patent #: 5731754
Issued on: 03/24/1998
Inventor: Lee, Jr., et al.

Remote tire pressure monitoring system employing coded tire identification and radio frequency transmission and enabling recalibration upon tire rotation or replacement
Patent #: 5838229
Issued on: 11/17/1998
Inventor: Robinson, III

Remote tire pressure monitoring system
Patent #: 5963128
Issued on: 10/05/1999
Inventor: McClelland

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Inventor

Application

No. 758734 filed on 01/11/2001

US Classes:

340/447, Radio wave73/146.5, Electric340/442, Tire deflation or inflation340/444, Relative wheel speed340/445, With particular telemetric coupling340/539.1Radio

Examiners

Primary: Wu, David W.
Assistant: Pham, Hoa Q.

Attorney, Agent or Firm

Foreign Patent References

  • 931679 EP. 07/23/1999

International Class

B60C 023/00

Abstract

A remote tire monitoring system (10) includes tire monitors (12) positioned at respective wheels of a vehicle (V) for transmitting radio signals modulated by tire data and modulation means positioned above near the tire monitors for imposing a secondary modulation on the radio signals. A receiver (14) receives the radio signals and recovers the tire data (26) from the radio signals and associates the tire monitor with the respective wheels of the vehicle using the secondary modulation.

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