Patent US3296715A successfully refreshed from Google Patents.
US3296715A
Expired / Lapsed
US
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Self-loading scraper
Assignee: Caterpillar Inc
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Filing: 1963-09-12
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Granted: 1967-01-10
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Expires: 1983-09-12
Abstract
No abstract record available.
Inventors
- 👤 John E Jass
- 👤 Robert J Sullivan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:01
CPC Classifications
E; E02; E02F; E02F3/00; E02F3/04; E02F3/64; E02F3/65; E02F3/654; E02F3/655; E02F3/28; E02F3/34; E02F3/348; E02F3/3486; E02F3/6454; E02F3/6481
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
116 words
EXCAVATING EQUIPMENT OF THE TYPE INCLUDING A TRACTOR AND A SCRAPER AND WHEREIN THE SCRAPER COMPRISES: A MAIN BOWL OPEN AT ITS TOP, SUPPORTED BY WHEELS; AN AUXILIARY BOWL EXTENDING FORWARDLY OF SAID MAIN BOWL, MEANS FOR EFFECTING VERTICAL ADJUSTMENT OF SAID MAIN AND AUXILIARY BOWLS; A CONVEYOR INCLUDING A BELT HAVING SPACED CARRIERS THEREON COMMUNICATING SAID AUXILIARY BOWL WITH THE OPEN TOP OF THE MAIN BOWL; MEANS MOUNTING SAID CONVEYOR ON SAID SCRAPER INDEPENDENTLY OF SAID AUXILIARY BOWL WHEREBY VERTICAL ADJUSTMENT OF SAID AUXILIARY BOWL DOES NOT AFFECT THE POSITION OF SAID CONVEYOR; A CUTTING EDGE TRANSVERSELY SPANNING THE AUXILIARY BOWL ACROSS THE BOTTOM EDGE OF THE OPEN FRONT AND DISPOSED FORWARDLY OF SAID CONVEYOR.
References Cited (Backward Citations)
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US3030714A
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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) | 1970-01-09 | 1970-07-11 | 1971-01-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-09 | 1974-07-11 | 1975-01-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-09 | 1978-07-11 | 1979-01-10 | $7700.00 | Window Closed / Lapsed |