US3231114A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Earthworking machine
Assignee: Individual
•
Filing: 1963-11-26
•
Granted: 1966-01-25
•
Expires: 1983-11-26
Abstract
No abstract record available.
Inventors
- 👤 Robert G Letourneau
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:30
CPC Classifications
E; E02; E02F; E02F3/00; E02F3/04; E02F3/28; E02F3/36; E02F3/40; E02F3/413; E02F3/4135
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
139 words
A POWERED EARTHWORKING MACHINE COMPRISING: (A) A BODY PORTION; (B) A PEDESTAL STRUCTURE MOUNTED ON SAID BODY PORTION FOR ROTATION ABOUT A VERTICAL AXIS, SAID STRUCTURE COMPRISING A CENTRAL VERTICAL COLUMN HAVING A PAIR OF ARM MEMBERS EXTENDING OUTWARDLY IN OPPOSITE DIRECTIONS AND FROM THE UPPER END OF SAID COLUMN; (C) A SUPPORT MEMBER FIXED TO THE FREE END OF EACH SAID ARM MEMBER AND EXTENDING LATERALLY OUTWARD THEREFROM; (D) A BOOM STRUCTURE PIVOTALLY MOUNTED ON EACH SAID SUPPORT MEMBER FOR SWINGING MOVEMENT IN A VERTICAL PLANE, SAID BOOM STRUCTURES EXTENDING IN OPPOSITE DIRECTIONS; (E) MEANS POSITIVELY POWERING EACH SAID BOOM STRUCTURE FOR MOVEMENT ABOUT ITS RESPECTIVE PIVOT; (F) AN EARTH MATERIALS DIGGING AND HOLDING APPARATUS MOUNTED AT THE FREE END OF EACH SAID BOOM STRUCTURE; AND (G) POWERED MEANS FOR ROTATING SAID PEDESTAL STRUCTUE ABOUT SAID VERTICAL AXIS.
Claim 2
Dependent Claim
139 words
A POWERED EARTHWORKING MACHINE COMPRISING: (A) A BODY PORTION; (B) A PEDESTAL STRUCTURE MOUNTED ON SAID BODY PORTION FOR ROTATION ABOUT A VERTICAL AXIS, SAID STRUCTURE COMPRISING A CENTRAL VERTICAL COLUMN HAVING A PAIR OF ARM MEMBERS EXTENDING OUTWARDLY IN OPPOSITE DIRECTIONS AND FROM THE UPPER END OF SAID COLUMN; (C) A SUPPORT MEMBER FIXED TO THE FREE END OF EACH SAID ARM MEMBER AND EXTENDING LATERALLY OUTWARD THEREFROM; (D) A BOOM STRUCTURE PIVOTALLY MOUNTED ON EACH SAID SUPPORT MEMBER FOR SWINGING MOVEMENT IN A VERTICAL PLANE, SAID BOOM STRUCTURES EXTENDING IN OPPOSITE DIRECTIONS; (E) MEANS POSITIVELY POWERING EACH SAID BOOM STRUCTURE FOR MOVEMENT ABOUT ITS RESPECTIVE PIVOT; (F) AN EARTH MATERIALS DIGGING AND HOLDING APPARATUS MOUNTED AT THE FREE END OF EACH SAID BOOM STRUCTURE; AND (G) POWERED MEANS FOR ROTATING SAID PEDESTAL STRUCTUE ABOUT SAID VERTICAL AXIS.
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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) | 1969-01-24 | 1969-07-26 | 1970-01-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-24 | 1973-07-26 | 1974-01-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-24 | 1977-07-26 | 1978-01-25 | $7700.00 | Window Closed / Lapsed |