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US3077682A
Expired / Lapsed
US
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Automatic blade control device for blade type earth moving machinery
Assignee: Individual
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Filing: 1961-10-02
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Granted: 1963-02-19
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Expires: 1981-10-02
Abstract
No abstract record available.
Inventors
- 👤 Everett T Small
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 16:54
CPC Classifications
E; E02; E02F; E02F3/00; E02F3/04; E02F3/76; E02F3/80; E02F3/84; E02F3/844; Y; Y10; Y10S; Y10S37/00; Y10S37/907
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
99 words
EARTH BLADING APPARATUS INCLUDING AN AMBULATORY FRAME, A BLADE HAVING A SUPPORT CONNECTED TO SAID FRAME FOR MOVEMENT GENERALLY VERTICALLY BETWEEN MAXIMUM BLADING LIMITS, MEANS CONNECTED TO SAID BLADE FOR RAISING AND LOWERING THE BLADE BETWEEN SAID MAXIMUM BLADING LIMITS, AND A CONTROL DEVICE CONNECTED WITH SAID RAISING AND LOWERING MEANS AND HAVING CYCLICALLY OPERATING ELEMENTS FOR MOVING SAID BLADE GENERALLY VERTICALLY THROUGH INCREMENTS OF ITS MAXIMUM BLADING LIMITS IN A CYCLE IN SUCCESSIVELY OPPOSITE DIRECTIONS SAID OPERATING ELEMENTS BEING SUCCESSIVELY MOVABLE THROUGH A CYCLE OF INCREMENTS OF MOVEMENT PROPORTIONAL TO THE INITIAL INCREMENTS OF MOVEMENT IN THE CYCLE.
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) | 1966-02-18 | 1966-08-20 | 1967-02-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-02-18 | 1970-08-20 | 1971-02-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-02-18 | 1974-08-20 | 1975-02-19 | $7700.00 | Window Closed / Lapsed |