Patent US3568145A successfully refreshed from Google Patents.
US3568145A
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US
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Tire-warning apparatus
Assignee: Individual
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Filing: 1968-01-19
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Granted: 1971-03-02
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Expires: 1988-01-19
Abstract
Abstract A tire-warning apparatus including a sensor disposed in a tire and connected in electrical circuit with a power source and an indicator. The sensor includes an elongated conductor having one end in connection with the power source and the opposite end, in one embodiment, adapted for contact with the tire rim when the tire becomes partially deflated to complete the electrical circuit through the indicator and indicate the condition of the tire. In another embodiment the opposite end of the conductor is an electrical contact with the rim and its intermediate portion is disposed a predetermined distance beneath the peripheral surface of the tire whereby it will be worn through to break the electrical circuit when the tire becomes worn.
Inventors
- 👤 Joseph K Dikoff
- 👤 J Homer Harold Overholser
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 07:55
CPC Classifications
B; B60; B60C; B60C23/00; B60C23/06
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
156 words
Tire-warning apparatus for indicating tire deflation and comprising: a deflation indicator; a tubeless tire for being mounted on a rim and including an elongated electrical sensor carried on one end from the peripheral wall of said tire and formed with a free end spaced a selected distance from said rim when said tire is inflated to its normal pressure, said tire being sufficiently flexible to squat sufficiently under the weight normally carried thereby when said tire reaches a predetermined level of deflation to engage said free end with said rim; and circuit means for connecting said deflation indicator in circuit with said sensor and a power source whereby said free end of said sensor will be spaced from said rim when said tire is fully inflated and when said tire reaches said predetermined level of deflation the tire will squat to cause said free end to engage said rim and complete a circuit through said indicator.
Claim 2
Dependent Claim
156 words
Tire-warning apparatus for indicating tire deflation and comprising: a deflation indicator; a tubeless tire for being mounted on a rim and including an elongated electrical sensor carried on one end from the peripheral wall of said tire and formed with a free end spaced a selected distance from said rim when said tire is inflated to its normal pressure, said tire being sufficiently flexible to squat sufficiently under the weight normally carried thereby when said tire reaches a predetermined level of deflation to engage said free end with said rim; and circuit means for connecting said deflation indicator in circuit with said sensor and a power source whereby said free end of said sensor will be spaced from said rim when said tire is fully inflated and when said tire reaches said predetermined level of deflation the tire will squat to cause said free end to engage said rim and complete a circuit through said indicator.
Claim 3
Dependent Claim
22 words
Tire-warning apparatus as set forth in claim 1 wherein said sensor includes a mounting portion embedded in the sidewall of said tire.
Claim 4
Dependent Claim
37 words
Tire-warning apparatus as set forth in claim 2 wherein: said tire is formed with a connector nipple; and said sensor is formed with an electrical contact projecting from said nipple for connection with a mating electrical contact.
Claim 5
Dependent Claim
31 words
Tire-warning apparatus as set forth in claim 1 wherein said tire is made of electrically insulating material and said sensor is carried therefrom to normally insulate said sensor from said rim.
Claim 6
Dependent Claim
62 words
Tire-warning apparatus as Set forth in claim 1 wherein said tire is mounted on a wheel of the type that includes a nonrotary plate supported from the axle and a rotary brake drum, said apparatus including: a first electrical brush mounted on said plate; and brush means mounted on said brake drum including a second brush biased to engage said first brush.
References Cited (Backward Citations)
US2215153A
Cited
US3222641A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-03-01 | 1974-08-31 | 1975-03-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-03-01 | 1978-08-31 | 1979-03-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-03-01 | 1982-08-31 | 1983-03-02 | $7700.00 | Window Closed / Lapsed |