US3787806A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tire pressure warning apparatus
Assignee: Avco Corp
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Filing: 1972-06-26
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Granted: 1974-01-22
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Expires: 1992-06-26
Abstract
Abstract A tire pressure warning apparatus for operation in a pneumatic tire in combination with an inner tube is disclosed. The warning apparatus comprises a pressure sensor, transmitter and a source of power sealingly adhered to an inner tube. The sensor assembly being in communication with the tire pressure for actuation of the transmitter in response to a drop in the tire pressure. Means are provided to protect the individual components while permitting the necessary flexibility to conform to the shape and motion of the inner surface of the tire.
Inventors
- 👤 D Church
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 06:58
CPC Classifications
B; B60; B60C; B60C23/00; B60C23/02; B60C23/04; B60C23/0491; B60C23/0493
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
120 words
A vehicle tire pressure monitoring and warning apparatus adhered to an inner tube of a pneumatic tire for the pressure controlled generation of an RF signal comprising: a pressure sensor exposed to the pneumatic pressure within the inner tube; a power supply; a transmitter including a transmitting antenna; said pressure sensor, power supply and transmitter configurated as separate units; flexible leads connecting said separate units; and a flexible material surrounding each of said separate units, said units configurated to generate a single composite unit and to permit relative flexing of each of said separate units relative to one another, said flexible material being adhered to said inner tube and to conform in shape to the inner surface of the tire.
Claim 2
Dependent Claim
120 words
A vehicle tire pressure monitoring and warning apparatus adhered to an inner tube of a pneumatic tire for the pressure controlled generation of an RF signal comprising: a pressure sensor exposed to the pneumatic pressure within the inner tube; a power supply; a transmitter including a transmitting antenna; said pressure sensor, power supply and transmitter configurated as separate units; flexible leads connecting said separate units; and a flexible material surrounding each of said separate units, said units configurated to generate a single composite unit and to permit relative flexing of each of said separate units relative to one another, said flexible material being adhered to said inner tube and to conform in shape to the inner surface of the tire.
Claim 3
Dependent Claim
33 words
The warning apparatus as set forth in claim 1 in which each of said sensor, power supply and transmitter is mounted in a hard container, each container being held by said flexible material.
Claim 4
Dependent Claim
46 words
The warning apparatus aS set forth in claim 2 in which said flexible material is secured to the exterior of the inner tube, the inner tube having an aperture therethrough opposite said sensor to provide communication between said sensor and the interior of the inner tube.
Claim 5
Dependent Claim
51 words
The warning apparatus as set forth in claim 2 in which the warning apparatus is secured to the interior of the inner tube, said inner tube having an aperture therethrough opposite said power supply to provide access to said power supply; and a removable insert mounted in the inner tube aperture.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-01-21 | 1977-07-23 | 1978-01-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-01-21 | 1981-07-23 | 1982-01-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-01-21 | 1985-07-23 | 1986-01-22 | $7700.00 | Window Closed / Lapsed |