US3261118A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Land leveler
Assignee: Individual
•
Filing: 1964-04-10
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Granted: 1966-07-19
•
Expires: 1984-04-10
Abstract
No abstract record available.
Inventors
- 👤 Levi J Litherland
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 08:14
CPC Classifications
E; E02; E02F; E02F3/00; E02F3/04; E02F3/76; E02F3/7663; A; A01; A01B; A01B31/00; A01B51/00; A01B51/02; A01B51/023; A01B73/00; A01B73/005
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
224 words
A TRACTOR DRAWN LAND LEVELER COMPRISING AN ELONGATED RECTANGULAR SHAPED TUBULAR FRAME HAVING FORWARD AND REAR ELONGATED LONGITUDINAL STRUCTURAL MEMBERS, (A) A SCRAPER BLADE MOUNTED BENEATH SAID FORWARD LONGITUDINAL STRUCTURAL MEMBER, (B) A PAIR OF GROUND ENGAGING CASTER-TYPE WHEEL UNITS CARRIED BY SAID REAR LONGITUDINAL STRUCTURAL MEMBER OF SAID FRAME BEHIND AND INTERMEDIATE THE ENDS OF SAID BLADE, (C) MEANS FOR PIVOTALLY CONNECTING EACH OF SAID WHEEL UNITS TO SAID REAR LONGITUDINAL STRUCTURAL MEMBER, (D) MEANS FOR PIVOTING EACH OF SAID WHEEL UNITS IN AN ARCUATED PATH ABOUT A HORIZONTAL AXIS DEFINED BY SAID REAR LONGITUDINAL STRUCTURAL MEMBER WHICH IS NORMALLY DISPOSED BETWEEN SAID BLADE AND SAID CASTERTYPE WHEEL UNITS RELATIVE TO SAID FRAME INTO AND OUT OF GROUND ENGAGING POSITION, (E) A PAIR OF TRACTOR HITCH MEANS PIVOTALLY CONNECTED TO THE SAID FORWARD LONGITUDINAL STRUCTURAL MEMBER INTERMEDIATE THE ENDS THEREOF FOR CONNECTING AND POSITIONING SAID BLADE BEHIND A PAIR OF TRACTORS WHEREBY THE POSITIONING OF SAID BLADE MAY BE VARIED ANGULARLY ABOUT A VERTICAL AXIAL MIDDLE POINT THEREOF RELATIVE TO THE RESPECTIVE POSITION OF THE TRACTOR, AND (F) DOWNWARDLY DIRECTED SOCKET MEANS PROVIDED BY EACH OF SAID LONGITUDINAL STRUCTURAL MEMBERS FOR REMOVABLY RECEIVING VERTICAL STUD MEMBERS OF A WHEELED FRAME FOR TRANSPORTATION OF SAID LEVELER IN THE DIRECTION OF ITS LENGTH WITH SAID BLADE AND SAID WHEEL UNITS OUT OF GROUND ENGAGING POSITIONS.
Claim 2
Dependent Claim
224 words
A TRACTOR DRAWN LAND LEVELER COMPRISING AN ELONGATED RECTANGULAR SHAPED TUBULAR FRAME HAVING FORWARD AND REAR ELONGATED LONGITUDINAL STRUCTURAL MEMBERS, (A) A SCRAPER BLADE MOUNTED BENEATH SAID FORWARD LONGITUDINAL STRUCTURAL MEMBER, (B) A PAIR OF GROUND ENGAGING CASTER-TYPE WHEEL UNITS CARRIED BY SAID REAR LONGITUDINAL STRUCTURAL MEMBER OF SAID FRAME BEHIND AND INTERMEDIATE THE ENDS OF SAID BLADE, (C) MEANS FOR PIVOTALLY CONNECTING EACH OF SAID WHEEL UNITS TO SAID REAR LONGITUDINAL STRUCTURAL MEMBER, (D) MEANS FOR PIVOTING EACH OF SAID WHEEL UNITS IN AN ARCUATED PATH ABOUT A HORIZONTAL AXIS DEFINED BY SAID REAR LONGITUDINAL STRUCTURAL MEMBER WHICH IS NORMALLY DISPOSED BETWEEN SAID BLADE AND SAID CASTERTYPE WHEEL UNITS RELATIVE TO SAID FRAME INTO AND OUT OF GROUND ENGAGING POSITION, (E) A PAIR OF TRACTOR HITCH MEANS PIVOTALLY CONNECTED TO THE SAID FORWARD LONGITUDINAL STRUCTURAL MEMBER INTERMEDIATE THE ENDS THEREOF FOR CONNECTING AND POSITIONING SAID BLADE BEHIND A PAIR OF TRACTORS WHEREBY THE POSITIONING OF SAID BLADE MAY BE VARIED ANGULARLY ABOUT A VERTICAL AXIAL MIDDLE POINT THEREOF RELATIVE TO THE RESPECTIVE POSITION OF THE TRACTOR, AND (F) DOWNWARDLY DIRECTED SOCKET MEANS PROVIDED BY EACH OF SAID LONGITUDINAL STRUCTURAL MEMBERS FOR REMOVABLY RECEIVING VERTICAL STUD MEMBERS OF A WHEELED FRAME FOR TRANSPORTATION OF SAID LEVELER IN THE DIRECTION OF ITS LENGTH WITH SAID BLADE AND SAID WHEEL UNITS OUT OF GROUND ENGAGING POSITIONS.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-07-18 | 1970-01-17 | 1970-07-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-07-18 | 1974-01-17 | 1974-07-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-07-18 | 1978-01-17 | 1978-07-19 | $7700.00 | Window Closed / Lapsed |