US4534550A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for pulling apart flat products, especially printed products arriving in an imbricated product stream
Assignee: Ferag AG
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Filing: 1982-09-07
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Granted: 1985-08-13
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Expires: 2002-09-07
Abstract
Abstract By means of a first band or belt conveyor an imbricated product stream or formation, formed by product packs, each composed of two overlying printed products, is inputted to a second band or belt conveyor. The conveying velocity of the second band conveyor is twice as large as the conveying velocity of the first band conveyor. Above the second band conveyor there is arranged a retarding or delay device containing an endless transport band. This endless transport band possesses a conveying velocity which is half as large as the conveying velocity of the second band conveyor. The transport band is perforated and travels over a negative pressure chamber operatively connected with a vacuum pump. During movement of a product pack past the negative pressure chamber the uppermost situated product of such pack is seized at its freely exposed region by the transport band and retained thereat by means of the prevailing negative pressure. The seized or engaged printed product is moved by the transport band with a velocity which is half as great as the velocity of movement of the product situated therebelow. In this manner it is possible to pull apart or separate the overlying printed products.
Inventors
- 👤 Walter Reist
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 11:32
CPC Classifications
B; B65; B65H; B65H29/00; B65H29/66; B65H29/6654; B65H2301/00; B65H2301/40; B65H2301/44; B65H2301/444; B65H2301/4447; B65H2301/44472; B65H2511/00; B65H2511/20; B65H2511/22
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
154 words
An apparatus for pulling apart substantially flat products, especially printed products, arriving in an imbricated product stream, comprising: an infeed device for the products which move in a predetermined direction of travel; a conveyor device arranged after said infeed device with respect to the direction of travel of the products; said conveyor device having a conveying velocity which is greater than the conveying velocity of the infeed device; a retarding device having an effective region for temporarily acting upon the products moving past said effective region of said retarding device; said retarding device being arranged at the region of the conveyor device and at that side of the products at which leading edges of the products are freely exposed; and said retarding device retarding the forward movement of the products acted upon by said retarding device for such length of time until a trailing product arrives at said effective region of the retarding device.
Claim 2
Independent Claim
154 words
An apparatus for pulling apart substantially flat products, especially printed products, arriving in an imbricated product stream, comprising: an infeed device for the products which move in a predetermined direction of travel; a conveyor device arranged after said infeed device with respect to the direction of travel of the products; said conveyor device having a conveying velocity which is greater than the conveying velocity of the infeed device; a retarding device having an effective region for temporarily acting upon the products moving past said effective region of said retarding device; said retarding device being arranged at the region of the conveyor device and at that side of the products at which leading edges of the products are freely exposed; and said retarding device retarding the forward movement of the products acted upon by said retarding device for such length of time until a trailing product arrives at said effective region of the retarding device.
Claim 3
Dependent Claim
67 words
The apparatus as defined in claim 1, wherein: said retarding device comprises at least one revolvingly driven transport band having the same conveying sense as said conveyor device; said revolvingly driven transport band having a conveying velocity which is smaller than the conveying velocity of the conveyor device and with which transport band there can be brought into contact the products at a freely exposed region thereof.
Claim 4
Dependent Claim
25 words
The apparatus as defined in claim 2, wherein: said transport band essentially possesses the same conveying velocity as the conveying velocity of the infeed device.
Claim 5
Independent Claim
32 words
The apparatus as defined in claims 2 or 3, wherein: said transport band comprises an air pervious transport band; and a negative pressure chamber over which there is guided said transport band.
Claim 6
Dependent Claim
18 words
The apparatus as defined in claim 4, wherein: said air pervious transport band comprises a perforated transport band.
Claim 7
Dependent Claim
33 words
The apparatus as defined in claim 2, further including: rocker means for guiding said transport band; means for pivotably mounting said rocker means; and said rocker means bearing upon said imbricated product stream.
Claim 8
Dependent Claim
17 words
The apparatus as defined in claim 1, wherein: said retarding device is arranged above said conveyor device.
Claim 9
Dependent Claim
15 words
The apparatus as defined in claim 7, wherein: said conveyor device comprises a band conveyor.
Claim 10
Dependent Claim
42 words
The apparatus as defined in claim 1, wherein: said apparatus serves for pulling apart products which arrive in product packs bearing upon one another in an imbricated formation, each of said product packs containing at least two completely overlying and squared-up products.
References Cited (Backward Citations)
DE709606C
Cited
CH363666A
Cited
US2919789A
Cited
DE1179453B
Cited
DE2330614A1
Cited
DE2917250A1
Cited
GB2061235A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-08-12 | 1989-02-11 | 1989-08-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-08-12 | 1993-02-11 | 1993-08-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-08-12 | 1997-02-11 | 1997-08-13 | $7700.00 | Window Closed / Lapsed |