US3211436A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Concrete-mixing attachment
Assignee: Individual
•
Filing: 1961-12-04
•
Granted: 1965-10-12
•
Expires: 1981-12-04
Abstract
No abstract record available.
Inventors
- 👤 David N Butterfield
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 19:36
CPC Classifications
B; B28; B28C; B28C5/00; B28C5/08; B28C5/10; B28C5/12; B28C5/14; B28C5/148
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
67 words
A CONCRETE-MIXING ATTACHMENT FOR AN EARTH-MOVING MACHINE BUCKET WITH END WALL APERTURES, SAID ATTACHMENT COMPRISING A ROTARY SHAFT STRUCTURE ADAPTED TO BE ROTATINGLY RECEIVED IN THE APERTURES, A BEARING ASSEMBLY ROTATABLY SUPPORTING ONE END OF SAID SHAFT STRUCTURE, MEANS FOR SECURING SAID BEARING ASSEMBLY TO ONE OF THE BUCKET END WALLS, A ROTARY HYDRAULIC MOTOR DRIVING UNIT DRIVINGLY CONNECTED TO THE OTHER END OF SAID SHAFT STRUCTURE,
Claim 2
Dependent Claim
67 words
A CONCRETE-MIXING ATTACHMENT FOR AN EARTH-MOVING MACHINE BUCKET WITH END WALL APERTURES, SAID ATTACHMENT COMPRISING A ROTARY SHAFT STRUCTURE ADAPTED TO BE ROTATINGLY RECEIVED IN THE APERTURES, A BEARING ASSEMBLY ROTATABLY SUPPORTING ONE END OF SAID SHAFT STRUCTURE, MEANS FOR SECURING SAID BEARING ASSEMBLY TO ONE OF THE BUCKET END WALLS, A ROTARY HYDRAULIC MOTOR DRIVING UNIT DRIVINGLY CONNECTED TO THE OTHER END OF SAID SHAFT STRUCTURE,
References Cited (Backward Citations)
CA627517A
Cited
US988261A
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FR31788E
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US1934116A
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US2351361A
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GB720686A
Cited
US2698742A
Cited
FR1130339A
Cited
US2818742A
Cited
US2961224A
Cited
GB880034A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-10-11 | 1969-04-12 | 1969-10-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-10-11 | 1973-04-12 | 1973-10-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-10-11 | 1977-04-12 | 1977-10-12 | $7700.00 | Window Closed / Lapsed |