US3430196A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tire pressure indicator
Assignee: R D PRODUCTS Inc
•
Filing: 1966-06-16
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Granted: 1969-02-25
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Expires: 1986-06-16
Abstract
No abstract record available.
Inventors
- 👤 Robert L Dalton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 03:03
CPC Classifications
B; B60; B60C; B60C23/00; B60C23/02; B60C23/04; B60C23/0408
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
96 words
A DEVICE FOR INDICATING A LOW PRESSURE CONDITION IN A PNEUMATIC TIRE, COMPRISING: (A) AN ELECTRICAL CIRCUIT, (B) FIRST SWITCH MEANS IN SAID CIRCUIT RESPONSIVE TO THE PRESSURE IN THE TIRE TO CLOSE WHEN SAID PRESSURE FALLS BELOW A PREDETERMINED VALVE, (C) SECOND SWITCH MEANS IN SAID CIRCUIT RESPONSIVE TO THE ROTATION OF THE TIRE TO CLOSE WHEN THE TIRE IS ROTATING, AND TO OPEN WHEN THE TIRE IS NOT ROTATING, AND (D) ELECTRICAL SIGNALLING MEANS IN SAID CIRCUIT OPERABLE TO EMIT A WARNING SIGNAL ONLY WHEN BOTH SAID FIRST AND SECOND SWITCH MEANS ARE CLOSED.
Claim 2
Independent Claim
96 words
A DEVICE FOR INDICATING A LOW PRESSURE CONDITION IN A PNEUMATIC TIRE, COMPRISING: (A) AN ELECTRICAL CIRCUIT, (B) FIRST SWITCH MEANS IN SAID CIRCUIT RESPONSIVE TO THE PRESSURE IN THE TIRE TO CLOSE WHEN SAID PRESSURE FALLS BELOW A PREDETERMINED VALVE, (C) SECOND SWITCH MEANS IN SAID CIRCUIT RESPONSIVE TO THE ROTATION OF THE TIRE TO CLOSE WHEN THE TIRE IS ROTATING, AND TO OPEN WHEN THE TIRE IS NOT ROTATING, AND (D) ELECTRICAL SIGNALLING MEANS IN SAID CIRCUIT OPERABLE TO EMIT A WARNING SIGNAL ONLY WHEN BOTH SAID FIRST AND SECOND SWITCH MEANS ARE CLOSED.
References Cited (Backward Citations)
US3297984A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-02-25 | 1972-08-26 | 1973-02-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-02-25 | 1976-08-26 | 1977-02-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-02-25 | 1980-08-26 | 1981-02-25 | $7700.00 | Window Closed / Lapsed |