Patent US3139286A successfully refreshed from Google Patents.
US3139286A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tank truck hopper body formed with arcuate surfaces
Assignee: Individual
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Filing: 1961-11-13
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Granted: 1964-06-30
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Expires: 1981-11-13
Abstract
No abstract record available.
Inventors
- 👤 Ronald D Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 02:19
CPC Classifications
B; B60; B60P; B60P3/00; B60P3/22; B60P3/2205; B60P3/221; B61; B61D; B61D5/00; B61D5/002
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
110 words
IN A TANK TRUCK HAVING A SUPPORTING FRAMEWORK ON WHEELS, A CLOSED TANK BODY ON SAID FRAMEWORK INCLUDING A PAIR OF DOFNWARDLY AND INWARDLY INCLINED OPPOSING WALLS AS SECTORS OF SUBSTANTIALLY CYLINDRICAL FORM, AND OF SUBSTANTIALLY CONSTANT CROSS SECTION THROUGHOUT THEIR LENGTH, WITH THEIR LOWER EDGE PORTIONS CUT AND FIXEDLY INTERCONNECTED, DEFINING END WALLS AND LOWER SIDE WALL PORTIONS OF SAID TANK, AND A LONGITUDINALLY EXTENDING DOWNWARDLY FACING TOP WALL ELEMENT FORMING A SECTOR OF A SUBSTANTIALLY CYLINDRICAL FORM WITH ITS EDGES FORMED AND IN REGISTRY THROUGHOUT ITS PERIPHERY WITH AND SECURED TO UPPER EDGE PORTIONS OF SAID INCLINED WALLS DEFINING TOP AND UPPER SIDE WALL PORTION OF SAID TANK.
Claim 2
Dependent Claim
110 words
IN A TANK TRUCK HAVING A SUPPORTING FRAMEWORK ON WHEELS, A CLOSED TANK BODY ON SAID FRAMEWORK INCLUDING A PAIR OF DOFNWARDLY AND INWARDLY INCLINED OPPOSING WALLS AS SECTORS OF SUBSTANTIALLY CYLINDRICAL FORM, AND OF SUBSTANTIALLY CONSTANT CROSS SECTION THROUGHOUT THEIR LENGTH, WITH THEIR LOWER EDGE PORTIONS CUT AND FIXEDLY INTERCONNECTED, DEFINING END WALLS AND LOWER SIDE WALL PORTIONS OF SAID TANK, AND A LONGITUDINALLY EXTENDING DOWNWARDLY FACING TOP WALL ELEMENT FORMING A SECTOR OF A SUBSTANTIALLY CYLINDRICAL FORM WITH ITS EDGES FORMED AND IN REGISTRY THROUGHOUT ITS PERIPHERY WITH AND SECURED TO UPPER EDGE PORTIONS OF SAID INCLINED WALLS DEFINING TOP AND UPPER SIDE WALL PORTION OF SAID TANK.
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) | 1967-06-30 | 1967-12-30 | 1968-06-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-06-30 | 1971-12-30 | 1972-06-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-06-30 | 1975-12-30 | 1976-06-30 | $7700.00 | Window Closed / Lapsed |