US3129690A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Warning device
Assignee: Individual
•
Filing: 1963-06-28
•
Granted: 1964-04-21
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Expires: 1983-06-28
Abstract
No abstract record available.
Inventors
- 👤 William O Nygard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 14:08
CPC Classifications
B; B60; B60C; B60C23/00; B60C23/02; Y; Y10; Y10T; Y10T137/00; Y10T137/8158; Y10T137/8342
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
218 words
APPARATUS FOR SIGNALLING IMBALANCE OF AIR PRESSURE IN DUAL MOUNTED VEHICLE TIRES COMPRISING, IN COMBINATION, A CASING FOR ATTACHMENT TO THE HUB OF AN OUTBOARD DUAL MOUNTED, WHEEL, A SIGNAL INDICATOR CARRIED BY SAID CASING NORMALLY CONFINED WITHIN THE OUTLINE OF THE OUTBOARD WHEEL AND EXTENSIBLE TO AN OUTWARDLY EXPOSED POSITION TO VISUALLY SIGNAL THE DRIVER OF THE VEHICLE, DETENT MEANS ACTING BETWEEN SAID CASING AND SAID INDICATOR RELEASABLY SECURING SAID INDICATOR IN AN INWARDLY RETRACTED POSITION, PRESSURE BALANCE SENSING MEANS CARRIED BY SAID CASING IN COMMUNICATION WITH THE INTERIOR OF BOTH DUAL MOUNTED TIRES, AND RELEASE MEANS RESPONSIVE TO AN IMBALANCE IN THE PRESSURE OF BOTH TIRES TO RELEASE SAID DETENT MEANS TO ALLOW SAID INDICATOR TO MOVE OUTWARDLY INTO A SIGNAL POSITION, SAID PRESSURE BALANCE SENSING MEANS COMPRISING A DIAPHRAGM DIVIDING THE INTERIOR OF SAID CASING INTO TWO COMPARTMENTS EACH IN COMMUNICATION WITH ONE OF THE DUAL MOUNTED TIRES, SAID SPRING MEANS COMPRISING AN OUTWARDLY EXTENDING CYLINDER CARRIED BY SAID DIAPHRAGM, A COMPRESSION COIL SPRING MOUNTED WITHIN THE INNER END OF SAID CYLINDER, SAID INDICATOR COMPRISING A SHAFT HAVING A PISTON AT ONE INNER END SLIDABLY CARRIED BY SAID CYLINDER AND A FLAG CARRIED BY THE OPPOSITE OUTER END, AND SAID COMPRESSION COIL SPRING ACTING BETWEEN SAID PISTON AND SAID CYLINDER YIELDABLY URGING SAID SHAFT OUTWARDLY.
Claim 2
Dependent Claim
218 words
APPARATUS FOR SIGNALLING IMBALANCE OF AIR PRESSURE IN DUAL MOUNTED VEHICLE TIRES COMPRISING, IN COMBINATION, A CASING FOR ATTACHMENT TO THE HUB OF AN OUTBOARD DUAL MOUNTED, WHEEL, A SIGNAL INDICATOR CARRIED BY SAID CASING NORMALLY CONFINED WITHIN THE OUTLINE OF THE OUTBOARD WHEEL AND EXTENSIBLE TO AN OUTWARDLY EXPOSED POSITION TO VISUALLY SIGNAL THE DRIVER OF THE VEHICLE, DETENT MEANS ACTING BETWEEN SAID CASING AND SAID INDICATOR RELEASABLY SECURING SAID INDICATOR IN AN INWARDLY RETRACTED POSITION, PRESSURE BALANCE SENSING MEANS CARRIED BY SAID CASING IN COMMUNICATION WITH THE INTERIOR OF BOTH DUAL MOUNTED TIRES, AND RELEASE MEANS RESPONSIVE TO AN IMBALANCE IN THE PRESSURE OF BOTH TIRES TO RELEASE SAID DETENT MEANS TO ALLOW SAID INDICATOR TO MOVE OUTWARDLY INTO A SIGNAL POSITION, SAID PRESSURE BALANCE SENSING MEANS COMPRISING A DIAPHRAGM DIVIDING THE INTERIOR OF SAID CASING INTO TWO COMPARTMENTS EACH IN COMMUNICATION WITH ONE OF THE DUAL MOUNTED TIRES, SAID SPRING MEANS COMPRISING AN OUTWARDLY EXTENDING CYLINDER CARRIED BY SAID DIAPHRAGM, A COMPRESSION COIL SPRING MOUNTED WITHIN THE INNER END OF SAID CYLINDER, SAID INDICATOR COMPRISING A SHAFT HAVING A PISTON AT ONE INNER END SLIDABLY CARRIED BY SAID CYLINDER AND A FLAG CARRIED BY THE OPPOSITE OUTER END, AND SAID COMPRESSION COIL SPRING ACTING BETWEEN SAID PISTON AND SAID CYLINDER YIELDABLY URGING SAID SHAFT OUTWARDLY.
References Cited (Backward Citations)
US1173038A
Cited
US1513740A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-04-21 | 1967-10-21 | 1968-04-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-04-21 | 1971-10-21 | 1972-04-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-04-21 | 1975-10-21 | 1976-04-21 | $7700.00 | Window Closed / Lapsed |