Patent US3107819A successfully refreshed from Google Patents.
US3107819A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gravimetric conveyor
Assignee: Link Belt Co
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Filing: 1961-04-12
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Granted: 1963-10-22
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Expires: 1981-04-12
Abstract
No abstract record available.
Inventors
- 👤 Du Wayne G Black
- 👤 Neville C Mckelvy
- 👤 Carl R George
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 07:50
CPC Classifications
G; G01; G01G; G01G11/00; G01G11/08; G01G11/083
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
147 words
A GRAVIMETRIC CONVEYOR CONSISTING OF A BASE, A BALANCED FRAME PIVOTALLY MOUNTED ON SAID BASE, A CONSTANT SPEED ROTARY DRIVEN SHAFT MOUNTED ON SAID FRAME, AN ANNULAR CONVEYOR DRUM CONTINUOUSLY ROTATED BY SAID SHAFT, FEEDING MEANS TO SUPPLY MATERIAL TO THE TOP OF SAID ROTARY CONVEYOR DRUM WHICH IS FED THEREFROM BY THE ROTATION OF SAID CONVEYOR DRUM, CONTROL MEANS FOR SAID FEEDING MEANS TO INCREASE AND DECRESE THE SUPPLY OF MATERIAL FLOWING THEREFROM, AND A ROTARY DRIVE WHEEL MOUNTED ON AND OPERATED BY SAID SHAFT AND CONTROLLED BY THE OSCILLATING MOVEMENT OF SAID BALANCED FRAME TO OPERATE SAID CONTROL MEANS TO DECREASE THE FLOW OF MATERIAL FROM SAID FEEDING MEANS IF THE WEIGHT OF THE MATERIAL ON SAID CONVEYOR DRUM OVERBALANCES SAID FRAME AND INCREASE THE FLOW OF MATERIAL FROM SAID FEEDING MEANS IF THE WEIGHT OF MATERIAL ON SAID CONVEYOR DRUM UNDER BALANCES SAID FRAME.
Claim 2
Dependent Claim
147 words
A GRAVIMETRIC CONVEYOR CONSISTING OF A BASE, A BALANCED FRAME PIVOTALLY MOUNTED ON SAID BASE, A CONSTANT SPEED ROTARY DRIVEN SHAFT MOUNTED ON SAID FRAME, AN ANNULAR CONVEYOR DRUM CONTINUOUSLY ROTATED BY SAID SHAFT, FEEDING MEANS TO SUPPLY MATERIAL TO THE TOP OF SAID ROTARY CONVEYOR DRUM WHICH IS FED THEREFROM BY THE ROTATION OF SAID CONVEYOR DRUM, CONTROL MEANS FOR SAID FEEDING MEANS TO INCREASE AND DECRESE THE SUPPLY OF MATERIAL FLOWING THEREFROM, AND A ROTARY DRIVE WHEEL MOUNTED ON AND OPERATED BY SAID SHAFT AND CONTROLLED BY THE OSCILLATING MOVEMENT OF SAID BALANCED FRAME TO OPERATE SAID CONTROL MEANS TO DECREASE THE FLOW OF MATERIAL FROM SAID FEEDING MEANS IF THE WEIGHT OF THE MATERIAL ON SAID CONVEYOR DRUM OVERBALANCES SAID FRAME AND INCREASE THE FLOW OF MATERIAL FROM SAID FEEDING MEANS IF THE WEIGHT OF MATERIAL ON SAID CONVEYOR DRUM UNDER BALANCES SAID FRAME.
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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) | 1966-10-21 | 1967-04-22 | 1967-10-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-10-21 | 1971-04-22 | 1971-10-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-10-21 | 1975-04-22 | 1975-10-22 | $7700.00 | Window Closed / Lapsed |