US3176966A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Blending apparatus
Assignee: Rietz Manufacturing Co
•
Filing: 1962-05-25
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Granted: 1965-04-06
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Expires: 1982-05-25
Abstract
No abstract record available.
Inventors
- 👤 Rietz Carl Austin
- 👤 Warren S Enochian
- 👤 Harold T Andersen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 09:11
CPC Classifications
B; B01; B01F; B01F27/00; B01F27/60; B01F27/72; B01F27/721
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
130 words
IN APPARATUS FOR CARRYING OUT BLENDING OPERATIONS, A BODY INTO WHICH FEED MATERIAL TO BE BLENDED MAY BE INTRODUCED, A PAIR OF MATERIAL CONVEYING SCREWS DISPOSED SIDE-BY-SIDE WITHIN THE BODY, EACH OF SAID SCREWS DISPOSED PROVIDED WITH CONTINUOUS FLIGHT MEANS, MEANS FOR ROTATING SAID SCREWS WHEREBY MATERIAL ACTED UPON BY THE FLIGHT MEANS OF ONE SCREW IS MOVED IN A DIRECTION OPPOSITE TO THAT WHICH THE OTHER SCREW MOVES FEED MATERIAL, THE FLIGHT MEANS AT REMOTE END PORTIONS OF THE TWO SCREWS BEING OF A PITCH GREATER THAN THE FLIGHT MEANS AT THE OTHER END THEREOF WHEREBY MATERIAL ACTED UPON BY THE TWO FEED SCREWS IS CAUSED TO MOVE IN A GENERALLY CIRCUITOUS PATH WITH MATERIAL BEING TRANSFERRED INTO PORTIONS OF THE SCREWS THAN HAVE FLIGHT MEANS OF GREATER PITCH.
Claim 2
Dependent Claim
130 words
IN APPARATUS FOR CARRYING OUT BLENDING OPERATIONS, A BODY INTO WHICH FEED MATERIAL TO BE BLENDED MAY BE INTRODUCED, A PAIR OF MATERIAL CONVEYING SCREWS DISPOSED SIDE-BY-SIDE WITHIN THE BODY, EACH OF SAID SCREWS DISPOSED PROVIDED WITH CONTINUOUS FLIGHT MEANS, MEANS FOR ROTATING SAID SCREWS WHEREBY MATERIAL ACTED UPON BY THE FLIGHT MEANS OF ONE SCREW IS MOVED IN A DIRECTION OPPOSITE TO THAT WHICH THE OTHER SCREW MOVES FEED MATERIAL, THE FLIGHT MEANS AT REMOTE END PORTIONS OF THE TWO SCREWS BEING OF A PITCH GREATER THAN THE FLIGHT MEANS AT THE OTHER END THEREOF WHEREBY MATERIAL ACTED UPON BY THE TWO FEED SCREWS IS CAUSED TO MOVE IN A GENERALLY CIRCUITOUS PATH WITH MATERIAL BEING TRANSFERRED INTO PORTIONS OF THE SCREWS THAN HAVE FLIGHT MEANS OF GREATER PITCH.
References Cited (Backward Citations)
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US941767A
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US946475A
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US1179922A
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US1420008A
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US2571300A
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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) | 1968-04-05 | 1968-10-05 | 1969-04-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-04-05 | 1972-10-05 | 1973-04-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-04-05 | 1976-10-05 | 1977-04-06 | $7700.00 | Window Closed / Lapsed |