US3215978A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vehicle tire pressure alarm system
Assignee: Philips North America LLC
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Filing: 1961-12-28
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Granted: 1965-11-02
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Expires: 1981-12-28
Abstract
No abstract record available.
Inventors
- 👤 Harold M Brown
- 👤 Gene L James
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:01
CPC Classifications
B; B60; B60C; B60C23/00; B60C23/02; B60C23/04; B60C23/0491; B60C23/0496; B60C23/0408; B60C23/0422; B60C23/0427; B60C23/0428; B60C23/043; B60C23/0433; B60C23/0435; B60C23/0447; H; H01; H01H; H01H35/00; H01H35/24
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
110 words
IN A VEHICLE HAVING AN OPERATOR''S COMPARTMENT AND PNEUMATIC TIRES, A TIRE ALARM SYSTEM COMPRISING: SIGNAL GENERATOR MEANS AT VARI OUS PNEUMATIC TIRES OF THE VEHICLE, EACH GENERATOR MEANS PRODUCING A VARYING MAGNETIC FIELD SIGNAL IN RESPONSE TO A CHANGE OF CONDITION TO A PREDETERMIEND EXTENT IN THE TIRE ASSOCIATED THEREWITH; A PORTABLE RECEIVER IN SAID OPERATOR''S COMPARTMENT, SAID RECEIVER BEING RESPONSIVE TO THE SIGNALS PRODUCED BY SAID GENERATOR MEANS AND COUPLED TO AN ALARM TO OPERATE SAID ALARM IN RESPONSE TO RECEPTION OF SAID SIGNALS; SIGNAL PICKUP MEANS IN SAID VEHICLE AND CONNECTED TO SAID RECEIVER WHEN SAID RECEIVER IS SAID COMPARTMENT AND COUPLING SIGNALS FROM SAID GENERATOR MEANS
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) | 1968-11-01 | 1969-05-03 | 1969-11-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-01 | 1973-05-03 | 1973-11-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-01 | 1977-05-03 | 1977-11-02 | $7700.00 | Window Closed / Lapsed |