US3178686A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pulsed tire pressure monitor
Assignee: Metallurgical Resources Inc
•
Filing: 1960-02-29
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Granted: 1965-04-13
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Expires: 1980-02-29
Abstract
No abstract record available.
Inventors
- 👤 Robert L Mills
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 10:45
CPC Classifications
B; B60; B60C; B60C23/00; B60C23/005; B60C23/009; B60C23/02; B60C23/04; B60C23/0408; B60C23/0422; B60C23/0433
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
106 words
AN ALARM SYSTEM FOR A PNEUMATIC TIRE ON A VEHICLE WHICH COMPRISES A PAIR OF ELECTROMAGNETIC WAVE TRANSMITTERS EACH HAVING DIRECTIONAL CHARACTERISTICS DIFFERENTLY ORIENTED ONE WITH RESPECT TO THE OTHER AND MOUNTED FOR ROTATION WITH SAID TIRE, AN EXCITATION CIRCUIT INCLUDING AN ACTUATING SWITCH OPERABLE UPON THE OCCURRENCE OF PRESSURE IN SAID TIRE BELOW A PREDETERMINED LEVEL ALTERNATELY FOR ENERGIZING FIRST ONE AND THEN THE OTHER OF SAID TRANSMITTERS TO ESTABLISH AN AVERAGE OMNI-DIRECTIONAL FIELD, AND A RECEIVE SYSTEM INCLUDING INDICATING MEANS CARRIED BY SAID VEHICLE MOUNTED FOR RECEPTION OF SIGNALS OF SAID OMNIDIRECTIONAL FIELD FOR ACTUATING SAID INDICATING MEANS UPON OCCURRENCE OF LOW TIRE PRESSURE.
Claim 2
Dependent Claim
106 words
AN ALARM SYSTEM FOR A PNEUMATIC TIRE ON A VEHICLE WHICH COMPRISES A PAIR OF ELECTROMAGNETIC WAVE TRANSMITTERS EACH HAVING DIRECTIONAL CHARACTERISTICS DIFFERENTLY ORIENTED ONE WITH RESPECT TO THE OTHER AND MOUNTED FOR ROTATION WITH SAID TIRE, AN EXCITATION CIRCUIT INCLUDING AN ACTUATING SWITCH OPERABLE UPON THE OCCURRENCE OF PRESSURE IN SAID TIRE BELOW A PREDETERMINED LEVEL ALTERNATELY FOR ENERGIZING FIRST ONE AND THEN THE OTHER OF SAID TRANSMITTERS TO ESTABLISH AN AVERAGE OMNI-DIRECTIONAL FIELD, AND A RECEIVE SYSTEM INCLUDING INDICATING MEANS CARRIED BY SAID VEHICLE MOUNTED FOR RECEPTION OF SIGNALS OF SAID OMNIDIRECTIONAL FIELD FOR ACTUATING SAID INDICATING MEANS UPON OCCURRENCE OF LOW TIRE PRESSURE.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-04-12 | 1968-10-12 | 1969-04-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-04-12 | 1972-10-12 | 1973-04-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-04-12 | 1976-10-12 | 1977-04-13 | $7700.00 | Window Closed / Lapsed |