US3387890A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Earth excavating device
Assignee: LOUIS E HAYNES
•
Filing: 1965-08-02
•
Granted: 1968-06-11
•
Expires: 1985-08-02
Abstract
No abstract record available.
Inventors
- 👤 Louis E Haynes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 08:48
CPC Classifications
E; E02; E02F; E02F3/00; E02F3/04; E02F3/28; E02F3/36; E02F3/40; E02F3/402; E02F3/405; E02F3/76; E02F3/80; E02F3/815; E02F3/8155
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
141 words
EARTH EXCAVATING APPARATUS COMPRISING: (A) A FRAMEWORK HAVING A PAIR OF UPSTANDING SIDE WALLS AND HAVING A FORWARD SIDE AND A REAR SIDE; (B) A CLOSED TRANSMISSION HOUSING EXTENDING BETWEEN THE SIDE WALLS OF THE FRAMEWORK; (C) A PLURALITY OF BLADE STRUCTURES EACH INCLUDING A FORWARD CUTTING SIDE POSITIONED AHEAD OF SAID TRANSMISSION HOUSING; A TRAILING SIDE POSITIONED TO THE REAR OF SAID TRANSMISSION HOUSING; AND A TOP EXTENDING OVER SAID TRANSMISSION HOUSING AND INTERCONNECTING SAID FORWARD AND TRAILING SIDES OF SAID BLADE STRUCTURE; (D) POWER TRANSMISSION MEANS IN SAID TRANSMISSION HOUSING; (E) BEARING MEANS IN SAID TRANSMISSION HOUSING; (F) ROD MEANS INTERCONNECTING SAID POWER TRANSMISSION MEANS WITH SAID BLADE STRUCTURES AND EXTENDING THROUGH SAID BEARING MEANS IN SAID TRANSMISSION HOUSING; AND (G) MEANS ON SAID FRAMEWORK FOR DRIVINGLY CONNECTING SAID POWER TRANSMISSION MEANS TO THE POWER TAKEOFF OF A TRACTOR.
Claim 2
Dependent Claim
141 words
EARTH EXCAVATING APPARATUS COMPRISING: (A) A FRAMEWORK HAVING A PAIR OF UPSTANDING SIDE WALLS AND HAVING A FORWARD SIDE AND A REAR SIDE; (B) A CLOSED TRANSMISSION HOUSING EXTENDING BETWEEN THE SIDE WALLS OF THE FRAMEWORK; (C) A PLURALITY OF BLADE STRUCTURES EACH INCLUDING A FORWARD CUTTING SIDE POSITIONED AHEAD OF SAID TRANSMISSION HOUSING; A TRAILING SIDE POSITIONED TO THE REAR OF SAID TRANSMISSION HOUSING; AND A TOP EXTENDING OVER SAID TRANSMISSION HOUSING AND INTERCONNECTING SAID FORWARD AND TRAILING SIDES OF SAID BLADE STRUCTURE; (D) POWER TRANSMISSION MEANS IN SAID TRANSMISSION HOUSING; (E) BEARING MEANS IN SAID TRANSMISSION HOUSING; (F) ROD MEANS INTERCONNECTING SAID POWER TRANSMISSION MEANS WITH SAID BLADE STRUCTURES AND EXTENDING THROUGH SAID BEARING MEANS IN SAID TRANSMISSION HOUSING; AND (G) MEANS ON SAID FRAMEWORK FOR DRIVINGLY CONNECTING SAID POWER TRANSMISSION MEANS TO THE POWER TAKEOFF OF A TRACTOR.
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) | 1971-06-11 | 1971-12-11 | 1972-06-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-06-11 | 1975-12-11 | 1976-06-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-06-11 | 1979-12-11 | 1980-06-11 | $7700.00 | Window Closed / Lapsed |