Patent US4230218A successfully refreshed from Google Patents.
US4230218A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for transporting layers of sheets
Assignee: Bielomatik Leuze GmbH and Co KG
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Filing: 1978-05-24
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Granted: 1980-10-28
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Expires: 1998-05-24
Abstract
Abstract An apparatus is provided for transporting layers of sheets in which the layers of sheets are carried off discontinuously transversely to the direction in which they are supplied and follow the layers of sheets previously carried off. The apparatus comprises a belt conveyor running at a substantially constant velocity, and a belt run with upper and lower belts which is connected in front of the continuously running belt conveyor and overlaps it at least in part. The belt run may be driven intermittently at a velocity varying between standstill and a higher velocity than that of the belt conveyor. The distance between the upper and lower belts may be varied cyclically.
Inventors
- 👤 Otto Kunzmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 23:54
CPC Classifications
B; B65; B65H; B65H31/00; B65H31/30; B65H31/3027
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
99 words
An apparatus for transporting articles, comprising: a belt conveyor adapted to run at a substantially constant velocity; a belt run, formed by upper and lower belts, which is disposed upstream of the belt conveyor, although overlapping the belt conveyor at least in part; means for intermittently driving the belt run at velocities different than that of the belt conveyor; and, means for cyclically increasing and decreasing the distance between the upper and lower belts for loading and engaging the articles, and for raising only the downstream end of the upper belt to release the articles in the overlapped region.
Claim 2
Independent Claim
99 words
An apparatus for transporting articles, comprising: a belt conveyor adapted to run at a substantially constant velocity; a belt run, formed by upper and lower belts, which is disposed upstream of the belt conveyor, although overlapping the belt conveyor at least in part; means for intermittently driving the belt run at velocities different than that of the belt conveyor; and, means for cyclically increasing and decreasing the distance between the upper and lower belts for loading and engaging the articles, and for raising only the downstream end of the upper belt to release the articles in the overlapped region.
Claim 3
Dependent Claim
21 words
An apparatus according to claim 1, wherein the belt conveyor comprises a plurality of belts which are parallel to each other.
Claim 4
Dependent Claim
21 words
An apparatus according to claim 1, wherein the belt run is formed of belts which are smoother than the belt conveyor.
Claim 5
Dependent Claim
15 words
An apparatus according to claim 3, wherein the belt run is formed of toothed belts.
Claim 6
Dependent Claim
36 words
An apparatus according to claim 1, wherein the lower belt of the belt run has a carrying run which lies somewhat lower than an upper run of the belt conveyor, at least in an unloaded state.
Claim 7
Dependent Claim
35 words
An apparatus according to claim 1, wherein the means for increasing and decreasing the distance between the upper and lower belts comprises a raising and lowering apparatus for the upper belt of the belt run.
Claim 8
Dependent Claim
36 words
An apparatus according to claim 1, further comprising means for angularly raising the downstream end of the upper belt of the belt run around a bend in the overlapped region, with respect to the belt conveyor.
Claim 9
Dependent Claim
11 words
An apparatus according to claim 7, wherein the angle is variable.
Claim 10
Dependent Claim
40 words
An apparatus according to claim 1, further comprising means for raising and lowering the downstream end of the upper belt of the belt run independently of the rest of the upper belt which remains substantially parallel to the lower belt.
Claim 11
Dependent Claim
62 words
An apparatus according to claim 1, wherein the means for driving the belt run and the means for increasing and decreasing the distance between the upper and lower belts cooperate so that the upper belt is lowered at the end of the stationary phase and is raised when its velocity in a deceleration stage substantially coincides with that of the belt conveyor.
Claim 12
Dependent Claim
35 words
An apparatus according to claim 10, wherein the lowering of the downstream end of the upper belt of the belt run takes place with a deceleration over the lowering of the preceding substantially parallel region.
Claim 13
Dependent Claim
32 words
An apparatus according to claim 11, wherein the lowering of the downstream end of the upper belt of the belt run takes place progressively during the transporting stage of the belt run.
Claim 14
Dependent Claim
28 words
An apparatus according to claim 11, wherein the downstream end of the upper belt of the belt run may be raised substantially simultaneously with the substantially parallel region.
Claim 15
Dependent Claim
29 words
An apparatus according to claim 1, wherein the conveying direction of the belt run is variable, and comprising a belt conveyor is arranged on each of its two sides.
Claim 16
Dependent Claim
27 words
An apparatus according to claim 1, wherein the belt run is driven at velocities varying from standstill to a higher velocity than that of the belt conveyor.
Claim 17
Dependent Claim
16 words
An apparatus according to claim 1 or 15, wherein the articles conveyed are stacks of sheets.
References Cited (Backward Citations)
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US3179234A
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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) | 1983-10-28 | 1984-04-28 | 1984-10-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-10-28 | 1988-04-28 | 1988-10-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-10-28 | 1992-04-28 | 1992-10-28 | $7700.00 | Window Closed / Lapsed |