US3669239A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and means for unloading articles from a conveyor
Assignee: Refrigeration Engineering Corp
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Filing: 1971-01-13
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Granted: 1972-06-13
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Expires: 1991-01-13
Abstract
Abstract Means for unloading articles from a grid-type conveyor unit comprising a rotary brush mounted for free-wheeling rotation about an axis lying transverse to the longitudinal movement of the conveyor and being positioned on the conveyor unit below its grid and intermediate its ends, the rotary brush serving to push the products off the grid-type conveyor unit as its bristles project therethrough.
Inventors
- 👤 Walter Harper Martin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 09:13
CPC Classifications
B; B65; B65G; B65G47/00; B65G47/52; B65G47/66
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
140 words
In a conveyor unit having movable perforate grid means, a means for unloading articles from said conveyor unit which rest on said grid means, comprising a brush means for freely mounting said brush a predetermined distance below said grid means for free wheeling rotation about an axis transverse to the direction of movement of said grid means, said brush having a plurality of bristles of a length greater than said predetermined distance so as to project upwardly throUgh the perforations of said grid means whereby, upon rotation of said brush solely by said grid means passing thereover and in contact with said bristles, each of the articles lying on said grid means in the vicinity of said brush is pushed upwardly by said bristles projecting upwardly therethrough and off said grid means to be thereby unloaded from said conveyor unit.
Claim 2
Dependent Claim
140 words
In a conveyor unit having movable perforate grid means, a means for unloading articles from said conveyor unit which rest on said grid means, comprising a brush means for freely mounting said brush a predetermined distance below said grid means for free wheeling rotation about an axis transverse to the direction of movement of said grid means, said brush having a plurality of bristles of a length greater than said predetermined distance so as to project upwardly throUgh the perforations of said grid means whereby, upon rotation of said brush solely by said grid means passing thereover and in contact with said bristles, each of the articles lying on said grid means in the vicinity of said brush is pushed upwardly by said bristles projecting upwardly therethrough and off said grid means to be thereby unloaded from said conveyor unit.
Claim 3
Dependent Claim
18 words
In the conveyor unit according to claim 1 wherein said bristles are substantially stiff, elongated and radially extending.
Claim 4
Dependent Claim
33 words
In the conveyor unit according to claim 2 wherein said grid means are mounted for endless movement about roller means located at opposite ends thereof, said brush being located intermediate aid roller means.
Claim 5
Dependent Claim
31 words
In the conveyor unit according to claim 1 wherein said grid means comprise a plurality of grid sections each comprising a sinuous-type rod secured along the length of a transverse rod.
Claim 6
Dependent Claim
28 words
In the conveyor unit according to claim 4 wherein the articles are unloaded on to another conveyor unit, one end of which is disposed adjacent said rotary brush.
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) | 1975-06-13 | 1975-12-13 | 1976-06-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-13 | 1979-12-13 | 1980-06-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-13 | 1983-12-13 | 1984-06-13 | $7700.00 | Window Closed / Lapsed |