US3210868A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Earthmoving scraper with auxiliary bowl mounted conveyor
Assignee: Caterpillar Inc
•
Filing: 1963-03-25
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Granted: 1965-10-12
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Expires: 1983-03-25
Abstract
No abstract record available.
Inventors
- 👤 Liess Richard Kenneth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 21:05
CPC Classifications
E; E02; E02F; E02F3/00; E02F3/04; E02F3/64; E02F3/65; E02F3/654; E02F3/655; E02F3/6454; E02F3/6481
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
88 words
IN A SELF-LOADING SCRAPER INCLUDING A MAIN BOWL OPEN AT ITS FRONT, EJECTOR MEANS FOR URGING MATERIAL IN THE BOWL FORWARDLY TOWARD THE FRONT OPENING, AND A CONVEYOR, THE COMBINATION COMPRISING: AN AUXILIARY BOWL PIVOTALLY CONNECTED TO THE FRONT OF THE MAIN BOWL FOR SWINGING MOVEMENT RELATIVE THERETO WHEREIN SAID AUXILIARY BOWL HAS A POSITION IN WHICH IT FORMS, A CONTINUOUS, FORWARD EXTENSION OF THE MAIN BOWL, THE CONVEYOR BEING SECURED TO SAID AUXILIARY BOWL FOR SWINGING MOVEMENT THEREWITH; A CUTTING EDGE SECURED ALONG THE LEADING BOTTOM EDGE
Claim 2
Dependent Claim
88 words
IN A SELF-LOADING SCRAPER INCLUDING A MAIN BOWL OPEN AT ITS FRONT, EJECTOR MEANS FOR URGING MATERIAL IN THE BOWL FORWARDLY TOWARD THE FRONT OPENING, AND A CONVEYOR, THE COMBINATION COMPRISING: AN AUXILIARY BOWL PIVOTALLY CONNECTED TO THE FRONT OF THE MAIN BOWL FOR SWINGING MOVEMENT RELATIVE THERETO WHEREIN SAID AUXILIARY BOWL HAS A POSITION IN WHICH IT FORMS, A CONTINUOUS, FORWARD EXTENSION OF THE MAIN BOWL, THE CONVEYOR BEING SECURED TO SAID AUXILIARY BOWL FOR SWINGING MOVEMENT THEREWITH; A CUTTING EDGE SECURED ALONG THE LEADING BOTTOM EDGE
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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) | 1968-10-11 | 1969-04-12 | 1969-10-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-10-11 | 1973-04-12 | 1973-10-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-10-11 | 1977-04-12 | 1977-10-12 | $7700.00 | Window Closed / Lapsed |