Patent US3276503A successfully refreshed from Google Patents.
US3276503A
Expired / Lapsed
US
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Tire pressure maintenance system
Assignee: Scovill Inc
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Filing: 1965-01-21
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Granted: 1966-10-04
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Expires: 1985-01-21
Abstract
No abstract record available.
Inventors
- 👤 Louis E Kilmarx
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:07
CPC Classifications
B; B60; B60C; B60C23/00; B60C23/02; B60C23/04; B60C23/0401; B60C23/0406; B60C23/001; B60C23/003; B60C23/00309; B60C23/00318; B60C23/00327; B60C23/00336; B60C23/00354; B60C23/00363; B60C23/00372; B60C23/005; B60C23/007; B60C23/009
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
197 words
A TIRE PRESSURE CONTROL SYSTEM ADAPTED TO MAINTAIN A DESIRED PRESSURE IN A PLURALITY OF TIRES MOUNTED ON THE WHEELS OF A VEHICLE AND WARN OF UNDERINFLATION OF ANY OF SAID TIRES, COMPRISING A SOURCE OF AIR AT A PRESSURE HIGHER THAN THE DESIRED PRESSURE TO BE MAINTAINED IN THE TIRES, MEANS PROVIDING FLUID CONNECTION IN SUCCESSION DOWNSTREAM FROM SAID PRESSURE SOURCE TO THE TIRES, INCLUDING A PRESSURE REGULATOR FOR LIMITING THE AIR PRESSURE TO BE SUPPLIED TO THE TIRES AT SAID DESIRED PRESSURE, A PRESSURE SWITCH WHICH CLOSES WHEN FLUID PRESSURE ACTING THEREON IS BELOW A PREDETERMINED PRESSURE LOWER THAN NORMAL TIRE PRESSURE AND IS HELD UPON ABOVE SAID PREDETERMINED LOWER PRESSURE, CONDUITS LEADING TO HOLLOW ENDS OF THE AXLES OF THE VEHICLE WHEELS, CONDUITS CONNECTING SAID HOLLOW AXLE ENDS WITH THE TIRES MOUNTED ON AND ROTATABLE WITH THE WHEELS, EACH OF SAID CONDUITS HAVING THEREIN A CHECK VALVE WHICH OPENS AT A PREDETERMINED PRESSURE LOWER THAN NORMAL TIRE PRESSURE AND CLOSES UNDER NORMAL TIRE PRESSURE ACTING THEREON AND AN ELECTRICALLY CONTROLLED WARNING MEANS OPERABLE BY THE PRESSURE SWITCH WHEN THE PRESSURE IN ANY OF THE TIRES FALLS BELOW THAT AT WHICH THE PRESSURE SWITCH CLOSES.
Claim 2
Dependent Claim
197 words
A TIRE PRESSURE CONTROL SYSTEM ADAPTED TO MAINTAIN A DESIRED PRESSURE IN A PLURALITY OF TIRES MOUNTED ON THE WHEELS OF A VEHICLE AND WARN OF UNDERINFLATION OF ANY OF SAID TIRES, COMPRISING A SOURCE OF AIR AT A PRESSURE HIGHER THAN THE DESIRED PRESSURE TO BE MAINTAINED IN THE TIRES, MEANS PROVIDING FLUID CONNECTION IN SUCCESSION DOWNSTREAM FROM SAID PRESSURE SOURCE TO THE TIRES, INCLUDING A PRESSURE REGULATOR FOR LIMITING THE AIR PRESSURE TO BE SUPPLIED TO THE TIRES AT SAID DESIRED PRESSURE, A PRESSURE SWITCH WHICH CLOSES WHEN FLUID PRESSURE ACTING THEREON IS BELOW A PREDETERMINED PRESSURE LOWER THAN NORMAL TIRE PRESSURE AND IS HELD UPON ABOVE SAID PREDETERMINED LOWER PRESSURE, CONDUITS LEADING TO HOLLOW ENDS OF THE AXLES OF THE VEHICLE WHEELS, CONDUITS CONNECTING SAID HOLLOW AXLE ENDS WITH THE TIRES MOUNTED ON AND ROTATABLE WITH THE WHEELS, EACH OF SAID CONDUITS HAVING THEREIN A CHECK VALVE WHICH OPENS AT A PREDETERMINED PRESSURE LOWER THAN NORMAL TIRE PRESSURE AND CLOSES UNDER NORMAL TIRE PRESSURE ACTING THEREON AND AN ELECTRICALLY CONTROLLED WARNING MEANS OPERABLE BY THE PRESSURE SWITCH WHEN THE PRESSURE IN ANY OF THE TIRES FALLS BELOW THAT AT WHICH THE PRESSURE SWITCH CLOSES.
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) | 1969-10-03 | 1970-04-04 | 1970-10-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-03 | 1974-04-04 | 1974-10-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-03 | 1978-04-04 | 1978-10-04 | $7700.00 | Window Closed / Lapsed |