Method of monitoring conditions of vehicle tires and tires containing a monitoring device therein
First Claim
1. An apparatus for monitoring an engineering condition of a tire comprising:
- a flexible housing having a hardness of from about 50 to about 95 on the Shore A scale, said housing including a first surface which can be adhered to a second surface located within a pressurizable cavity of a tire so as to minimize stress, strain, cyclic fatigue, impact and vibration; and
a monitoring device positioned within said housing, said monitoring device including a battery having an active mode and a dormant mode, a circuit for data band switching, an integrated circuit including data storage, sensors for sensing the engineering condition, means for converting said sensed condition to data;
means for energizing the circuit for data band switching to activate the battery from the passive mode to the active mode; and
means for transmitting said data responsive to a signal while the power source is active;
means for energizing the circuit for data band switching to deactivate the battery from the active mode to the passive mode after transmitting said data.
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Accused Products
Abstract
A method for monitoring various physical conditions of pneumatic tires, and to a tire including a monitoring device. More particularly, the invention relates to a method of monitoring tires which uses an active, self-powered programmable electronic device which is installed in or on the interior surface of a pneumatic tire or on a tire rim. This device can be used for monitoring, storing and telemetering information such as temperature, pressure, tire rotations and/or other operating conditions of a pneumatic tire, along with tire identification information. The device can be activated by externally transmitted radio frequency waves and in response, the device compares or transmits information and provides a warning in the event a preselected limit is exceeded.
309 Citations
10 Claims
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1. An apparatus for monitoring an engineering condition of a tire comprising:
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a flexible housing having a hardness of from about 50 to about 95 on the Shore A scale, said housing including a first surface which can be adhered to a second surface located within a pressurizable cavity of a tire so as to minimize stress, strain, cyclic fatigue, impact and vibration; and a monitoring device positioned within said housing, said monitoring device including a battery having an active mode and a dormant mode, a circuit for data band switching, an integrated circuit including data storage, sensors for sensing the engineering condition, means for converting said sensed condition to data; means for energizing the circuit for data band switching to activate the battery from the passive mode to the active mode; and means for transmitting said data responsive to a signal while the power source is active; means for energizing the circuit for data band switching to deactivate the battery from the active mode to the passive mode after transmitting said data. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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Specification