Patent US3079974A successfully refreshed from Google Patents.
US3079974A
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Pressure equalizing valve
Assignee: Individual
•
Filing: 1961-03-03
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Granted: 1963-03-05
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Expires: 1981-03-03
Abstract
No abstract record available.
Inventors
- 👤 Cardi Paul
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 23:50
CPC Classifications
B; B60; B60C; B60C29/00; B60C29/007; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7781; Y10T137/7835; Y10T137/7836
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
63 words
A PRESSURE EQUALIZING VALVE FOR DUAL TIRES COMPRISING A HOUSING, A CENTRAL WALL PORTION SEPARATING SAID HOUSING INTO TWO EQUAL CHAMBERS, AN INTEGRAL TRANSVERSE PORTION EXTENDING FROM SAID CENTRAL WALL PORTION INTO EACH OF SAID CHAMBERS, SAID TRANSVERSE PORTION HAVING A PASSAGEWAY EXTENDING THERETHROUGH AND COMMUNICATING WITH SAID CHAMBERS, VALVE MEANS IN EACH CHAMBER CONTROLLING THE PASSAGE OF AIR FROM EACH CHAMBER THROUGH
Claim 2
Dependent Claim
63 words
A PRESSURE EQUALIZING VALVE FOR DUAL TIRES COMPRISING A HOUSING, A CENTRAL WALL PORTION SEPARATING SAID HOUSING INTO TWO EQUAL CHAMBERS, AN INTEGRAL TRANSVERSE PORTION EXTENDING FROM SAID CENTRAL WALL PORTION INTO EACH OF SAID CHAMBERS, SAID TRANSVERSE PORTION HAVING A PASSAGEWAY EXTENDING THERETHROUGH AND COMMUNICATING WITH SAID CHAMBERS, VALVE MEANS IN EACH CHAMBER CONTROLLING THE PASSAGE OF AIR FROM EACH CHAMBER THROUGH
References Cited (Backward Citations)
US1882455A
Cited
US2789617A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-03-04 | 1966-09-03 | 1967-03-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-03-04 | 1970-09-03 | 1971-03-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-03-04 | 1974-09-03 | 1975-03-05 | $7700.00 | Window Closed / Lapsed |