US3292279A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Scraper bottom dump mechanism
Assignee: Allis Chalmers Corp
•
Filing: 1964-03-06
•
Granted: 1966-12-20
•
Expires: 1984-03-06
Abstract
No abstract record available.
Inventors
- 👤 Harvey W Rockwell
- 👤 Dale W Hawk
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 09:09
CPC Classifications
E; E02; E02F; E02F3/00; E02F3/04; E02F3/64; E02F3/65; E02F3/654; E02F3/656; E02F3/6454; E02F3/6472
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
88 words
AN EARTHMOVER COMPRISING: A WHEELED DRAFT FRAME, A WHEELED SCRAPER BOWL PIVOTALLY CONNECTED TO SAID DRAFT FRAME FOR VERTICAL SWINGING MOVEMENT ABOUT A TRANSVERSE PIVOT AXIS INCLUDING A PAIR OF TRANSVERSELY SPACED SIDE WALLS, A TRANSVERSELY EXTENDING EXCAVATING BLADE STRUCTURE RIGIDLY SECURED AT ITS OPPOSITE ENDS TO THE LOWER FORWARD PORTIONS OF SAID SIDE WALLS, RESPECTIVELY, TRANSVERSELY EXTENDING MEANS RIGIDLY INTERCONNECTING THE REAR PORTIONS OF SAID SIDE WALLS AND A PAIR OF LONGITUDINALLY EXTENDING TRACKS ON SAID SIDE WALLS, RESPECTIVELY, A BOTTOM DUMP MECHANISM FOR SAID BOWL INCLUDING
Claim 2
Dependent Claim
88 words
AN EARTHMOVER COMPRISING: A WHEELED DRAFT FRAME, A WHEELED SCRAPER BOWL PIVOTALLY CONNECTED TO SAID DRAFT FRAME FOR VERTICAL SWINGING MOVEMENT ABOUT A TRANSVERSE PIVOT AXIS INCLUDING A PAIR OF TRANSVERSELY SPACED SIDE WALLS, A TRANSVERSELY EXTENDING EXCAVATING BLADE STRUCTURE RIGIDLY SECURED AT ITS OPPOSITE ENDS TO THE LOWER FORWARD PORTIONS OF SAID SIDE WALLS, RESPECTIVELY, TRANSVERSELY EXTENDING MEANS RIGIDLY INTERCONNECTING THE REAR PORTIONS OF SAID SIDE WALLS AND A PAIR OF LONGITUDINALLY EXTENDING TRACKS ON SAID SIDE WALLS, RESPECTIVELY, A BOTTOM DUMP MECHANISM FOR SAID BOWL INCLUDING
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) | 1969-12-19 | 1970-06-20 | 1970-12-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-12-19 | 1974-06-20 | 1974-12-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-12-19 | 1978-06-20 | 1978-12-20 | $7700.00 | Window Closed / Lapsed |