US4903821A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Intermittent drum feeder with adjustable loading position
Assignee: Tsubakimoto Bulk Systems Corp
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Filing: 1988-06-09
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Granted: 1990-02-27
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Expires: 2008-06-09
Abstract
Abstract A feed mechanism for use with a bucket conveyor in which spaced-apart buckets are supported between spaced-parallel conveyor chains. The mechanism has a cylindrical trough with a feed auger extending across the chains. The trough has a discharge slot in its bottom coextensive with the width of the bucket. Materials fed to one end of the auger are advanced along the length of the trough. The discharge slot is adjustable in width so that it may be reduced for the major part of its length but is fully open at its remote end. A hollow cylindrical drum surrounds the auger to be rotated in synchronism with the chains. The drum has openings around its circumference to register with the open tops of the buckets, and skirts are provided between the discharge openings and the drum openings to direct the material from the discharge openings through the drum openings.
Inventors
- 👤 Tameaki Yamaguchi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 00:32
CPC Classifications
B; B65; B65G; B65G47/00; B65G47/74; B65G47/78; B65G33/00; B65G33/24
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
161 words
A feed mechanism comprising: a cylindrical trough having at the lower part thereof an axially extending material discharge opening, a feed auger screw disposed coaxially with said trough, means to feed material to one end of said auger screw, means to rotate said auger screw to distribute the material from said one end along the length of said trough, and a sleeve circumscribing said trough and said opening, said sleeve having an opening adapted to at least partially register with the opening of said through whereby the flow passing through said through opening may be regulated by angularly adjusting said sleeve on said trough to afford restriction of the flow of material from said trough along its length through said registering openings, said sleeve extending from the feed end of said trough to a point spaced from the opposite end of said through opening so as to cause said trough opening to be unrestricted at said opposite end of said trough.
Claim 2
Dependent Claim
161 words
A feed mechanism comprising: a cylindrical trough having at the lower part thereof an axially extending material discharge opening, a feed auger screw disposed coaxially with said trough, means to feed material to one end of said auger screw, means to rotate said auger screw to distribute the material from said one end along the length of said trough, and a sleeve circumscribing said trough and said opening, said sleeve having an opening adapted to at least partially register with the opening of said through whereby the flow passing through said through opening may be regulated by angularly adjusting said sleeve on said trough to afford restriction of the flow of material from said trough along its length through said registering openings, said sleeve extending from the feed end of said trough to a point spaced from the opposite end of said through opening so as to cause said trough opening to be unrestricted at said opposite end of said trough.
Claim 3
Dependent Claim
224 words
A feed mechanism comprising: a cylindrical trough having at the lower part thereof an axially extending material discharge opening, a feed auger screw disposed coaxially with said trough, means to feed material to one end of said auger screw, means to rotate said auger screw to distribute the material from said one end along the length of said trough, a sleeve circumscribing said trough and said opening, said sleeve having an opening adapted to at least partially register with the opening of said trough whereby the flow passing through said trough opening may be regulated by angularly adjusting said sleeve on said trough to afford restriction of the flow of material from said trough along its length through said registering openings, and a bucket conveyor in which spaced-apart buckets are supported at their ends between spaced parallel conveyor chains, said auger screw being operable to distribute material across the full width of the bucket, said trough being surrounded by an intermittent-opening drum having a series of openings spaced circumferentially around the drum at a pitch corresponding to the spacing of the conveyor buckets on said conveyor chain, said drum being coaxially secured to a sprocket engageable with said conveyor chains, and said feed mechanism operable to discharge material through its opening into and through the drum openings for feeding material to said conveyor buckets.
Claim 4
Dependent Claim
224 words
A feed mechanism comprising: a cylindrical trough having at the lower part thereof an axially extending material discharge opening, a feed auger screw disposed coaxially with said trough, means to feed material to one end of said auger screw, means to rotate said auger screw to distribute the material from said one end along the length of said trough, a sleeve circumscribing said trough and said opening, said sleeve having an opening adapted to at least partially register with the opening of said trough whereby the flow passing through said trough opening may be regulated by angularly adjusting said sleeve on said trough to afford restriction of the flow of material from said trough along its length through said registering openings, and a bucket conveyor in which spaced-apart buckets are supported at their ends between spaced parallel conveyor chains, said auger screw being operable to distribute material across the full width of the bucket, said trough being surrounded by an intermittent-opening drum having a series of openings spaced circumferentially around the drum at a pitch corresponding to the spacing of the conveyor buckets on said conveyor chain, said drum being coaxially secured to a sprocket engageable with said conveyor chains, and said feed mechanism operable to discharge material through its opening into and through the drum openings for feeding material to said conveyor buckets.
Claim 5
Dependent Claim
45 words
A mechanism according to claim 2 wherein the sleeve extends from the feed end of said trough to a point spaced from the opposite end of said opening so as to cause said trough opening to be unrestricted at said opposite end of said trough.
Claim 6
Dependent Claim
33 words
A mechanism according to claim 3 including skirts depending from said trough to direct the material from said trough opening into said drum openings when said drum openings are positioned below said skirt.
Claim 7
Dependent Claim
27 words
A mechanism according to claim 4 wherein said skirt cooperates with said drum to provide a sluice valve arrangement controlling the flow of material into said buckets.
Claim 8
Dependent Claim
159 words
A feed mechanism comprising: a cylindrical trough having at the lower part thereof an axially extending material discharge opening, a feed auger screw disposed coaxially with said trough, means to feed material to one end of said auger screw, means to rotate said auger screw to advance the material from said one end along the length of said trough, a sleeve circumscribing said trough and said opening, said sleeve having an opening adapted to at least partially register with the opening of said trough whereby the flow passing through said trough opening may be regulated by angularly adjusting said sleeve on said trough to afford restriction of the flow of material from said trough along its length through said registering opening, and an intermittent-opening drum surrounding said sleeve and having a series of openings spaced circumferentially around the drum at a predetermined pitch, said mechanism being operable to discharge material through its opening into and through the drum openings.
Claim 9
Dependent Claim
159 words
A feed mechanism comprising: a cylindrical trough having at the lower part thereof an axially extending material discharge opening, a feed auger screw disposed coaxially with said trough, means to feed material to one end of said auger screw, means to rotate said auger screw to advance the material from said one end along the length of said trough, a sleeve circumscribing said trough and said opening, said sleeve having an opening adapted to at least partially register with the opening of said trough whereby the flow passing through said trough opening may be regulated by angularly adjusting said sleeve on said trough to afford restriction of the flow of material from said trough along its length through said registering opening, and an intermittent-opening drum surrounding said sleeve and having a series of openings spaced circumferentially around the drum at a predetermined pitch, said mechanism being operable to discharge material through its opening into and through the drum openings.
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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) | 1993-02-26 | 1993-08-28 | 1994-02-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-02-26 | 1997-08-28 | 1998-02-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-02-26 | 2001-08-28 | 2002-02-27 | $7700.00 | Window Closed / Lapsed |