Patent US3391831A successfully refreshed from Google Patents.
US3391831A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dry solids fertilizer applicator
Assignee: Lloyd J Wolf & Sons Inc
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Filing: 1966-10-07
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Granted: 1968-07-09
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Expires: 1986-10-07
Abstract
No abstract record available.
Inventors
- 👤 Lloyd J Wolf
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 17:15
CPC Classifications
A; A01; A01C; A01C15/00; A01C15/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
111 words
A METERING DEVICE FOR GRANULAR MATERIAL COMPRISING A HORIZONTAL CYLINDRICAL HOUSING, A FLUTED ROTOR OF SMALLER DIAMETER THAN SAID HOUSING ECCENTRICALLY MOUNTED WITHIN SAID HOUSING WITH ITS OUTER CIRCUMFERENCE SUBSTANTIALLY TANGENTIAL TO THE INNER SURFACE OF SAID HOUSING, AN INLET OPENING IN AN UPPER QUADRANT OF SAID HOUSING, A BOTTOM OPENING IN SAID HOUSING, THE LINE OF TANGENCY OF SAID ROTOR AND SAID HOUSING FOLLOWING SAID INLET OPENING WITH RESPECT TO THE DIRECTION OF ROTATION OF SAID ROTOR AND BEING SPACED ANGULARLY OF THE HOUSING FROM BOTH SAID OPENINGS WHEREFOR MOVEMENT IN A TANGENT DIRECTION TOWARD AND AWAY FROM THE ROTARY SPINDLE AND IS DRIVEN BY A LINEAR TYPE HYDRAULIC MOTOR.
Claim 2
Dependent Claim
111 words
A METERING DEVICE FOR GRANULAR MATERIAL COMPRISING A HORIZONTAL CYLINDRICAL HOUSING, A FLUTED ROTOR OF SMALLER DIAMETER THAN SAID HOUSING ECCENTRICALLY MOUNTED WITHIN SAID HOUSING WITH ITS OUTER CIRCUMFERENCE SUBSTANTIALLY TANGENTIAL TO THE INNER SURFACE OF SAID HOUSING, AN INLET OPENING IN AN UPPER QUADRANT OF SAID HOUSING, A BOTTOM OPENING IN SAID HOUSING, THE LINE OF TANGENCY OF SAID ROTOR AND SAID HOUSING FOLLOWING SAID INLET OPENING WITH RESPECT TO THE DIRECTION OF ROTATION OF SAID ROTOR AND BEING SPACED ANGULARLY OF THE HOUSING FROM BOTH SAID OPENINGS WHEREFOR MOVEMENT IN A TANGENT DIRECTION TOWARD AND AWAY FROM THE ROTARY SPINDLE AND IS DRIVEN BY A LINEAR TYPE HYDRAULIC MOTOR.
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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) | 1971-07-09 | 1972-01-08 | 1972-07-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-07-09 | 1976-01-08 | 1976-07-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-07-09 | 1980-01-08 | 1980-07-09 | $7700.00 | Window Closed / Lapsed |