Patent US4646910A successfully refreshed from Google Patents.
US4646910A
Expired / Lapsed
US
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Generalized high speed belt to belt transfer chute
Assignee: JENIKE AND JOHANSN Inc 2 EXECUTIVE PARK DRIVE N BILLERICA MA 01862 A CORP OF MA
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Filing: 1985-08-05
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Granted: 1987-03-03
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Expires: 2005-08-05
Abstract
Abstract A high speed belt to belt transfer chute useful in handling, without modification or adjustments, material ranging from sticky clay and fine dust to large rocks. The generalized chute is designed either to bend the material flow to the vertical after it has left a leading belt or, conversely, to direct material moving vertically downward into the direction of a following belt. The chute is constructed of individually replaceable, ribbed elements, which may be repositioned and replaced as they wear in order to maintain the same directed, controlled flow of material, while minimizing the replacement cost and downtime. A two-unit chute may be constructed with an upper unit for transferring material from a conveying belt to a second, lower unit which transfers the material onto a following belt, with the vertical distance between them fixed so that the energy lost by the material in friction and impact on both units may be made up in gravitational acceleration between the belts, thereby maintaining the speed of solids and the rate at which the materials are deposited onto the following belt.
Inventors
- 👤 Jerry R. Johanson
- 👤 David S. Dick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 23:51
CPC Classifications
B; B65; B65G; B65G47/00; B65G47/02; B65G47/16; B65G47/18; B65G47/20; B65G47/34; B65G47/44
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
142 words
A transfer chute for transferring a stream of bulk particulate material falling with a horizontal component of velocity from a first conveyor to a second conveyor comprising, in combination, a support frame extending along a path between the first conveyor and the second conveyor, a plurality of replaceable abutting elements each supported by and downwardly shiftable along the frame, each element comprising a sheet curved for lateral confinement of the stream and a rib projecting from the sheet for retaining a portion of the material in position to absorb the impact of the stream, and means to restrain the elements from shifting along the frame and being adapted to release selectively an end element for removal and to permit downward shifting of the remaining elements to provide a space at the other end of the frame for insertion of a replacement element.
Claim 2
Dependent Claim
142 words
A transfer chute for transferring a stream of bulk particulate material falling with a horizontal component of velocity from a first conveyor to a second conveyor comprising, in combination, a support frame extending along a path between the first conveyor and the second conveyor, a plurality of replaceable abutting elements each supported by and downwardly shiftable along the frame, each element comprising a sheet curved for lateral confinement of the stream and a rib projecting from the sheet for retaining a portion of the material in position to absorb the impact of the stream, and means to restrain the elements from shifting along the frame and being adapted to release selectively an end element for removal and to permit downward shifting of the remaining elements to provide a space at the other end of the frame for insertion of a replacement element.
Claim 3
Dependent Claim
33 words
A transfer chute according to claim 1, in which a portion of said path between the first conveyor and the second conveyor has a greater curvature than the free-fall path of the stream.
Claim 4
Dependent Claim
25 words
A transfer chute according to claim 2, in which a portion of said path between the first conveyor and the second conveyor is substantially rectilinear.
Claim 5
Dependent Claim
37 words
A transfer chute according to claim 2, in which said path between the first conveyor and the second conveyor is substantially tangential to said free-fall path at the free edge of the rib on the uppermost element.
Claim 6
Dependent Claim
38 words
A transfer chute according to claim 1, in which the support frame comprises a pair of channel members and each element has a pair of side portions each extending into and displaceable along one of said channel members.
Claim 7
Dependent Claim
36 words
A transfer chute according to claim 1, in which the support frame comprises a pair of bars and each element has a pair of channel-shaped side portions each receiving and displaceable along one of said bars.
Claim 8
Dependent Claim
18 words
A transfer chute according to claim 1, with means for rotating the support frame about a horizontal axis.
Claim 9
Dependent Claim
198 words
A two chute transfer system for transferring a stream of bulk particulate material falling with a horizontal component of velocity from a first conveyor to a second conveyor comprising, in combination, a first chute and a second chute, each of said chutes comprising a support frame, a plurality of replaceable abutting elements each supported by and downwardly shiftable along the frame, each element comprising a sheet curved for lateral confinement of the stream and a rib projecting from the sheet for retaining a portion of the material in position to absorb the impact of the stream, and means to restrain the elements from shifting along the frame and being adapted to release selectively an end element for removal and to permit downward shifting of the remaining elements to provide a space at the other end of the frame for insertion of a replacement element, wherein the support frame of the first chute extends along a first path between the first conveyor and the second chute and has a greater curvature than the free-fall path of the stream and the support frame of the second chute extends along a second path between the first chute and the second conveyor.
Claim 10
Dependent Claim
198 words
A two chute transfer system for transferring a stream of bulk particulate material falling with a horizontal component of velocity from a first conveyor to a second conveyor comprising, in combination, a first chute and a second chute, each of said chutes comprising a support frame, a plurality of replaceable abutting elements each supported by and downwardly shiftable along the frame, each element comprising a sheet curved for lateral confinement of the stream and a rib projecting from the sheet for retaining a portion of the material in position to absorb the impact of the stream, and means to restrain the elements from shifting along the frame and being adapted to release selectively an end element for removal and to permit downward shifting of the remaining elements to provide a space at the other end of the frame for insertion of a replacement element, wherein the support frame of the first chute extends along a first path between the first conveyor and the second chute and has a greater curvature than the free-fall path of the stream and the support frame of the second chute extends along a second path between the first chute and the second conveyor.
Claim 11
Dependent Claim
15 words
A transfer system according to claim 8, in which the second path is substantially rectilinear.
Claim 12
Dependent Claim
36 words
A two chute transfer system according to claim 8, in which said first path is substantially tangential to said free-fall path at the free edge of the rib on the uppermost element of said first chute.
Claim 13
Dependent Claim
40 words
A two chute transfer system according to claim 8, in which each support frame comprises a pair of channelled members and each element has a pair of side portions each extending into and displaceable along one of said channelled members.
Claim 14
Dependent Claim
38 words
A two chute transfer system according to claim 8, in which each support frame comprises a pair of bars and each element has a pair of channel-shaped side portions each receiving and displaceable along one of said bars.
Claim 15
Dependent Claim
24 words
A two chute transfer system according to claim 8, with means for rotating at least one of the support frames about a horizontal axis.
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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) | 1990-03-02 | 1990-09-01 | 1991-03-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-03-02 | 1994-09-01 | 1995-03-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-03-02 | 1998-09-01 | 1999-03-03 | $7700.00 | Window Closed / Lapsed |