US3344539A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vertical excavator
Assignee: Individual
•
Filing: 1964-08-13
•
Granted: 1967-10-03
•
Expires: 1984-08-13
Abstract
No abstract record available.
Inventors
- 👤 Harry O Crum
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 22:46
CPC Classifications
E; E02; E02F; E02F5/00; E02F5/16; E02F5/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
100 words
A VERTICAL EXCAVATOR COMPRISING A GENERALLY HORIZONTAL MAIN SUPPORT FRAME INCLUDING MEANS ADAPTED TO ENGAGE AND BE STATIONARILY SUPPORTED FROM THE GROUND SUPPORT MEANS CARRIED BY SAID MAIN FRAME, GUIDE MEANS PIVOTALLY AND LATERALLY SHIFTABLY SUPPORTED FROM SAID SUPPORT MEANS FOR ROTATION ABOUT A HORIZONTAL AXIS AND SHIFTING ALONG SAID AXIS AND INCLUDING MEANS DEFINING AN ELONGATED GUIDEWAY EXTENDING TRANSVERSELY OF SAID AXIS, ELONGATED BOOM MEANS SLIDABLY SUPPORTED FROM SAID GUIDE MEANS FOR LONGITUDINAL RECIPROCATION LONGITUDINALLY ALONG SAID GUIDEWAY, MEANS OPERATIVELY CONNECTED BETWEEN SAID GUIDE MEANS AND SAID BOOM MEANS FOR LONGITUDINALLY ADJUSTABLY POSITIONING SAID BOOM MEANS RELATIVE TO SAID
Claim 2
Dependent Claim
100 words
A VERTICAL EXCAVATOR COMPRISING A GENERALLY HORIZONTAL MAIN SUPPORT FRAME INCLUDING MEANS ADAPTED TO ENGAGE AND BE STATIONARILY SUPPORTED FROM THE GROUND SUPPORT MEANS CARRIED BY SAID MAIN FRAME, GUIDE MEANS PIVOTALLY AND LATERALLY SHIFTABLY SUPPORTED FROM SAID SUPPORT MEANS FOR ROTATION ABOUT A HORIZONTAL AXIS AND SHIFTING ALONG SAID AXIS AND INCLUDING MEANS DEFINING AN ELONGATED GUIDEWAY EXTENDING TRANSVERSELY OF SAID AXIS, ELONGATED BOOM MEANS SLIDABLY SUPPORTED FROM SAID GUIDE MEANS FOR LONGITUDINAL RECIPROCATION LONGITUDINALLY ALONG SAID GUIDEWAY, MEANS OPERATIVELY CONNECTED BETWEEN SAID GUIDE MEANS AND SAID BOOM MEANS FOR LONGITUDINALLY ADJUSTABLY POSITIONING SAID BOOM MEANS RELATIVE TO SAID
References Cited (Backward Citations)
US2594720A
Cited
US2689661A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-10-02 | 1971-04-03 | 1971-10-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-10-02 | 1975-04-03 | 1975-10-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-10-02 | 1979-04-03 | 1979-10-03 | $7700.00 | Window Closed / Lapsed |