US3289888A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control mechanism for volumetric measuring of aggregate materials
Assignee: Barber Greene Co
•
Filing: 1965-01-28
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Granted: 1966-12-06
•
Expires: 1985-01-28
Abstract
No abstract record available.
Inventors
- 👤 Ralph L Ohman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 21:09
CPC Classifications
E; E01; E01C; E01C19/00; E01C19/02; E01C19/10; E01C19/1059; E01C19/1068
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
79 words
IN A BATCH TYPE ASPHALT PLANT INCLUDING AN AGGREGATE WEIGHT HOPPER HAVING AGGREGATE COMPARTMENTS THEREIN AND A WEIGH TANK FOR COMMON DISTRIBUTION OF AGGREGATE AND BITUMEN TO A PUG MILL, THE IMPROVEMENT COMBINATION COMPRISING A WEIGHT HOPPER PRESENTTING DEVICE OPERATIVELY ASSOCIATED WITH EACH COMPARTMENT OF THE WEIGHT HOPPER FOR ENABLING VARIABLE SELECTABLE VOLUMES OF AGGREGATE TO BE LOADED IN THE AGGREGATE WEIGH HOPPER, AND AN ASPHALT WEIGH HOPPER FOR ENABLING VARIABLE SELECTABLE THE WEIGH HOPPER FOR ENABLING VARIABLE SELECTABLE
Claim 2
Dependent Claim
79 words
IN A BATCH TYPE ASPHALT PLANT INCLUDING AN AGGREGATE WEIGHT HOPPER HAVING AGGREGATE COMPARTMENTS THEREIN AND A WEIGH TANK FOR COMMON DISTRIBUTION OF AGGREGATE AND BITUMEN TO A PUG MILL, THE IMPROVEMENT COMBINATION COMPRISING A WEIGHT HOPPER PRESENTTING DEVICE OPERATIVELY ASSOCIATED WITH EACH COMPARTMENT OF THE WEIGHT HOPPER FOR ENABLING VARIABLE SELECTABLE VOLUMES OF AGGREGATE TO BE LOADED IN THE AGGREGATE WEIGH HOPPER, AND AN ASPHALT WEIGH HOPPER FOR ENABLING VARIABLE SELECTABLE THE WEIGH HOPPER FOR ENABLING VARIABLE SELECTABLE
References Cited (Backward Citations)
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Cited
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Cited
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Cited
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-12-05 | 1970-06-06 | 1970-12-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-12-05 | 1974-06-06 | 1974-12-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-12-05 | 1978-06-06 | 1978-12-06 | $7700.00 | Window Closed / Lapsed |