US3863367A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Auger scraper with recessed ejector
Assignee: Caterpillar Inc
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Filing: 1973-11-19
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Granted: 1975-02-04
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Expires: 1993-11-19
Abstract
Abstract A scraper bowl has a cutting edge disposed at a forward open end thereof and a normally upright auger rotatably mounted in the bowl for elevating and distributing material therein. An ejector, movably mounted in the scraper bowl, has a recess formed therein to accommodate the auger upon forward movement thereof during the unloading phase of scraper operation.
Inventors
- 👤 James E Gee
- 👤 Robert N Stedman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 12:26
CPC Classifications
E; E02; E02F; E02F3/00; E02F3/04; E02F3/64; E02F3/65; E02F3/654; E02F3/655; E02F3/6409; E02F3/6436; E02F3/6454; E02F3/6481
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
145 words
A self-loading auger scraper comprising a bowl having a pair of laterally spaced and vertically disposed sidewalls, a generally horizontally disposed floor connected between said sidewalls and a cutting edge extending transversely between said sidewalls and secured to a forward end of said floor, a generally upright ejector, extending between said sidewalls, normally positioned at a rearward end of said bowl, actuating means for selectively moving said ejector from the rearward end towards an open, forward end of said bowl, adjacent to said cutting edge, a generally upright auger rotatably mounted in said bowl, and disposed rearwardly of said cutting edge, means for rotating said auger, and means forming a recess in said ejector, generally conforming to the shape of said auger, for permitting said ejector to move adjacent to said cutting edge upon actuation of said ejector towards the forward end of said bowl.
Claim 2
Dependent Claim
145 words
A self-loading auger scraper comprising a bowl having a pair of laterally spaced and vertically disposed sidewalls, a generally horizontally disposed floor connected between said sidewalls and a cutting edge extending transversely between said sidewalls and secured to a forward end of said floor, a generally upright ejector, extending between said sidewalls, normally positioned at a rearward end of said bowl, actuating means for selectively moving said ejector from the rearward end towards an open, forward end of said bowl, adjacent to said cutting edge, a generally upright auger rotatably mounted in said bowl, and disposed rearwardly of said cutting edge, means for rotating said auger, and means forming a recess in said ejector, generally conforming to the shape of said auger, for permitting said ejector to move adjacent to said cutting edge upon actuation of said ejector towards the forward end of said bowl.
Claim 3
Dependent Claim
23 words
The auger scraper of claim 1 further comprising an apron pivotally mounted on said bowl to normally close the open, forward end thereof.
Claim 4
Dependent Claim
30 words
The auger scraper of claim 1 wherein the upper end of said auger is rotatably mounted in a bearing assembly attached to a cross-beam extending and secured between said sidewalls.
Claim 5
Dependent Claim
24 words
The auger scraper of claim 1 wherein the lower end of said auger is rotatably mounted in a bearing assembly secured to said floor.
Claim 6
Dependent Claim
34 words
The auger scraper of claim 1 wherein each of said sidewalls has a triangularly shaped extension secured thereon with apexes of said extensions being generally aligned laterally with the upper end of said auger.
Claim 7
Dependent Claim
13 words
The auger scraper of claim 1 wherein said recess is generally cylindrically shaped.
References Cited (Backward Citations)
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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) | 1978-02-03 | 1978-08-05 | 1979-02-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-02-03 | 1982-08-05 | 1983-02-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-02-03 | 1986-08-05 | 1987-02-04 | $7700.00 | Window Closed / Lapsed |