TIRE PRESSURE SENSOR
First Claim
1. A tire pressure sensor for a pneumatic tire, the tire pressure sensor comprising:
- a housing;
a pressure transducer within the housing;
a transmitter within the housing electronically coupled to the pressure transducer;
one or more batteries within the housing connected to deliver electrical power to the pressure transducer and to the transmitter;
a pressurized compartment within the housing bounded at least partially by a flexible membrane, the membrane within the housing and having an outward surface spaced apart from the housing;
a first conduit extending between the pressure transducer and the compartment for passage of air from within the compartment to the pressure transducer; and
at least one inlet port extending through the housing to allow pressurized air within the tire to contact the outward surface of the membrane.
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Accused Products
Abstract
A tire pressure sensor is provided having a housing, a pressure transducer within the housing electronically coupled to a transmitter, a battery within the housing connected to deliver electrical power to the pressure transducer and to the transmitter, and a pressurized compartment within the housing bounded at least partially by a flexible membrane. A first conduit extends from the pressure transducer to the compartment. An inlet port extends through the housing to allow pressurized air within the tire to contact the membrane. In particular embodiments, the pressure transducer, transmitter and battery are rubber coated and encapsulated with epoxy.
27 Citations
20 Claims
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1. A tire pressure sensor for a pneumatic tire, the tire pressure sensor comprising:
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a housing; a pressure transducer within the housing; a transmitter within the housing electronically coupled to the pressure transducer; one or more batteries within the housing connected to deliver electrical power to the pressure transducer and to the transmitter; a pressurized compartment within the housing bounded at least partially by a flexible membrane, the membrane within the housing and having an outward surface spaced apart from the housing; a first conduit extending between the pressure transducer and the compartment for passage of air from within the compartment to the pressure transducer; and at least one inlet port extending through the housing to allow pressurized air within the tire to contact the outward surface of the membrane. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A method of detecting air pressure within a pneumatic tire, the method comprising:
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providing a tire pressure sensor comprising; a housing; a pressure transducer within the housing; a transmitter within the housing electronically coupled to the pressure transducer for transmitting output signals corresponding to the air pressure within the tire; one or more batteries within the housing connected to deliver electrical power to the pressure transducer and to the transmitter; a pressurized compartment within the housing bounded at least partially by a flexible membrane, the membrane within the housing and having an outward surface spaced apart from the housing; a first conduit extending between the pressure transducer and the compartment for passage of air from within the compartment to the pressure transducer; and at least one inlet port extending through the housing to allow pressurized air within the tire to contact the outward surface of the membrane; positioning the tire pressure sensor in the tire so that the inlet port is in communication with pressurized air within the tire; and receiving the signals transmitted by the transmitter.
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17. A tire pressure sensor for a pneumatic tire, the tire pressure sensor comprising:
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a housing having an opening thereto; a pressure transducer within the housing; a transmitter within the housing electronically coupled to the pressure transducer; one or more batteries within the housing connected to deliver electrical power to the pressure transducer and to the transmitter; a flexible membrane covering the opening; a pressurized compartment within the housing bounded at least partially by the membrane; and a first conduit extending between the pressure transducer and the compartment for passage of air from within the compartment to the pressure transducer. - View Dependent Claims (18, 19, 20)
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Specification