Patent US4037284A successfully refreshed from Google Patents.
US4037284A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sweeper assembly
Assignee: Ingersoll Equipment Co Inc
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Filing: 1976-06-10
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Granted: 1977-07-26
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Expires: 1996-06-10
Abstract
Abstract An improvement in sweepers, particularly of the rotary type shown, comprising a separate guard-drag plate extending downwardly from the hopper at an acute angle to the ground, then turned upwardly adjacent the forward end of the sweeper housing, but spaced therefrom. The arcuate lower surface of the guard-drag plate is spaced below the forward end of the housing, protecting the housing against damage and providing a drag surface which compresses and distributes particulate material and raises the sweeper assembly upon engaging obstacles or accumulations of particulate material.
Inventors
- 👤 Raymond F. McDonald
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 23:16
CPC Classifications
E; E01; E01H; E01H1/00; E01H1/02; E01H1/04; E01H1/045; A; A01; A01G; A01G20/00; A01G20/40; A01G20/43
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
160 words
A rotary sweeper assembly, comprising a enclosed housing having a top and side walls and a lower inlet opening, ground traversing wheels supporting said housing for movement along the ground, a rotary brush assembly within said housing enclosure lifting particulate material into said housing through said inlet opening and propelling the particulate material out of a forwardly opening outlet adjacent the top of said housing enclosure and a hopper adjacent said outlet forward of said housing receiving particulate material, the improvement comprising a drag-guard plate extending from said hopper assembly at an acute angle to the ground surface toward said lower inlet opening, then said plate being turned upwardly adjacent said housing but spaced therefrom, said plate extending substantially across the entire forward end of said housing and the lower face defining an arcuate drag surface spaced below the lower forward end of said housing protecting said housing and lifting the sweeper assembly upon engaging an accumulation of particulate material.
Claim 2
Dependent Claim
160 words
A rotary sweeper assembly, comprising a enclosed housing having a top and side walls and a lower inlet opening, ground traversing wheels supporting said housing for movement along the ground, a rotary brush assembly within said housing enclosure lifting particulate material into said housing through said inlet opening and propelling the particulate material out of a forwardly opening outlet adjacent the top of said housing enclosure and a hopper adjacent said outlet forward of said housing receiving particulate material, the improvement comprising a drag-guard plate extending from said hopper assembly at an acute angle to the ground surface toward said lower inlet opening, then said plate being turned upwardly adjacent said housing but spaced therefrom, said plate extending substantially across the entire forward end of said housing and the lower face defining an arcuate drag surface spaced below the lower forward end of said housing protecting said housing and lifting the sweeper assembly upon engaging an accumulation of particulate material.
Claim 3
Dependent Claim
28 words
The rotary sweeper assembly defined in claim 1, characterized in that said drag-guard plate extends at an acute angle of less than thirty degrees to the ground level.
Claim 4
Dependent Claim
42 words
The rotary sweeper assembly defined in claim 1, characterized in that said drag-guard plate is secured at one end to said hopper assembly and at the opposed end adjacent said housing, providing a free relatively resilient midportion including said arcuate drag surface.
Claim 5
Dependent Claim
133 words
A rotary sweeper assembly having a downwardly opening housing enclosure, a rotary brush assembly within said enclosure lifting particulate material into said housing enclosure through an inlet opening adjacent the forward end of said housing and propelling the material out of said enclosure through an outlet opening forwardly, the improvement comprising: a guard plate extending downwardly toward said inlet opening of said housing enclosure at an acute angle to the ground surface and said guard plate being turned upwardly adjacent said housing, but spaced therefrom; said guard plate having a lower edge defining a downwardly facing arcuate surface spaced below said forward housing end; said guard plate providing protection for said housing and a drag surface for said sweeper assembly limiting the intake of said sweeper compressing and distributing accumulations of particulate material.
Claim 6
Dependent Claim
133 words
A rotary sweeper assembly having a downwardly opening housing enclosure, a rotary brush assembly within said enclosure lifting particulate material into said housing enclosure through an inlet opening adjacent the forward end of said housing and propelling the material out of said enclosure through an outlet opening forwardly, the improvement comprising: a guard plate extending downwardly toward said inlet opening of said housing enclosure at an acute angle to the ground surface and said guard plate being turned upwardly adjacent said housing, but spaced therefrom; said guard plate having a lower edge defining a downwardly facing arcuate surface spaced below said forward housing end; said guard plate providing protection for said housing and a drag surface for said sweeper assembly limiting the intake of said sweeper compressing and distributing accumulations of particulate material.
Claim 7
Dependent Claim
42 words
The rotary sweeper assembly defined in claim 4, characterized in that said guard plate extends across the forward end of said housing generally parallel to said lower edge and defining an acute angle to the ground surface of less than thirty degrees.
Claim 8
Dependent Claim
35 words
The rotary sweeper assembly defined in claim 4, characterized in that said guard plate has opposed side ends secured to a frame assembly, providing a free relatively resilient midportion including said downwardly facing arcuate surface.
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) | 1980-07-25 | 1981-01-24 | 1981-07-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-07-25 | 1985-01-24 | 1985-07-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-07-25 | 1989-01-24 | 1989-07-26 | $7700.00 | Window Closed / Lapsed |