US3310293A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Concrete mixing and delivery system
Assignee: Barber Greene Co
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Filing: 1964-06-26
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Granted: 1967-03-21
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Expires: 1984-06-26
Abstract
No abstract record available.
Inventors
- 👤 Harold M Zimmerman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 14:31
CPC Classifications
B; B28; B28C; B28C9/00; B28C9/04; B28C9/0454; B28C9/0463
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
118 words
A CONCRETE MIXING TRUCK COMPRISING A MOBILE FRAME HAVING A FIRST AND A SECOND TANK THEREON, PARTITION MEANS IN SAID FIRST TANK FOR DIVIDING THE SAME INTO SEPARATE COMPARTMENTS FOR STORING CONCRETE INGREDIENTS, FIRST OPERABLE MEANS FOR FEEDING INGREDIENTS FROM EACH OF SAID COMPARTMENTS, INCLUDING MEANS FOR ADJUSTING THE RATIO OF THE INGREDIENTS FED FROM EACH COMPARTMENT, SECOND OPERABLE MEANS FOR FEEDING AN INGREDIENT FROM SAID SECOND TANK, MIXING MEANS INCLUDING AN ELONGATED MIXING TROUGH HAVING A MIXING ELEMENT THEREIN, DELIVERY MEANS DISPOSED TO RECEIVE THE INGREDIENTS FED FROM SAID COMPARTMENTS AND SECOND TANK AND EFFECT THEIR DISCHARGE INTO THE MIXING MEANS, AND MEANS FOR SIMULTANEOUSLY CONTROLLING THE RATE OF OPERATION OF SAID FIRST AND SECOND FEED MEANS.
Claim 2
Dependent Claim
118 words
A CONCRETE MIXING TRUCK COMPRISING A MOBILE FRAME HAVING A FIRST AND A SECOND TANK THEREON, PARTITION MEANS IN SAID FIRST TANK FOR DIVIDING THE SAME INTO SEPARATE COMPARTMENTS FOR STORING CONCRETE INGREDIENTS, FIRST OPERABLE MEANS FOR FEEDING INGREDIENTS FROM EACH OF SAID COMPARTMENTS, INCLUDING MEANS FOR ADJUSTING THE RATIO OF THE INGREDIENTS FED FROM EACH COMPARTMENT, SECOND OPERABLE MEANS FOR FEEDING AN INGREDIENT FROM SAID SECOND TANK, MIXING MEANS INCLUDING AN ELONGATED MIXING TROUGH HAVING A MIXING ELEMENT THEREIN, DELIVERY MEANS DISPOSED TO RECEIVE THE INGREDIENTS FED FROM SAID COMPARTMENTS AND SECOND TANK AND EFFECT THEIR DISCHARGE INTO THE MIXING MEANS, AND MEANS FOR SIMULTANEOUSLY CONTROLLING THE RATE OF OPERATION OF SAID FIRST AND SECOND FEED MEANS.
References Cited (Backward Citations)
US796591A
Cited
US1841436A
Cited
US2705134A
Cited
US2856165A
Cited
US2946597A
Cited
US2976025A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-03-20 | 1970-09-19 | 1971-03-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-03-20 | 1974-09-19 | 1975-03-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-03-20 | 1978-09-19 | 1979-03-21 | $7700.00 | Window Closed / Lapsed |