US3753838A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for producing double faced corrugated paperboard
Assignee: Gebr Eickhoff Maschinenfabrik u Eisengiesserei GmbH
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Filing: 1972-02-17
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Granted: 1973-08-21
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Expires: 1992-02-17
Abstract
Abstract Apparatus in which a flat paper facing sheet is glued to a traveling corrugated paper sheet is provided with an endless traveling belt, the lower strand of which rests on an upper facing sheet. Resting on this lower strand of the belt is a plurality of weighting rolls arranged in rows extending lengthwise of the belt. Above each row of rolls there is a beam to which the rolls are pivotally connected. Each beam is adjustable vertically independently of the others in order to adjust the pressure of the rolls against the belt. The beams are prevented from moving lengthwise.
Inventors
- 👤 H Brandenburg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 06:01
CPC Classifications
B; B31; B31F; B31F1/00; B31F1/20; B31F1/24; B31F1/26; B31F1/28; B31F1/2845; B31F1/2877; B31F1/2881; Y; Y10; Y10T; Y10T156/00; Y10T156/17; Y10T156/1702; Y10T156/1712; Y10T156/1722; Y10T156/1724; Y10T156/1741
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
97 words
In apparatus for producing double faced corrugated paperboard, the combination with an endless traveling weighting belt having upper and lower strands, of a plurality of rows of weighting rolls resting on the lower strand of the belt, said rows extending lengthwise of the belt, a beam above each of said rows and extending lengthwise of it, means connecting each beam to the row of rolls beneath it, means for adjusting the beams vertically independently of one another to adjust the pressure of the rolls against the belt, and means restraining movement of the beams in other directions.
Claim 2
Dependent Claim
97 words
In apparatus for producing double faced corrugated paperboard, the combination with an endless traveling weighting belt having upper and lower strands, of a plurality of rows of weighting rolls resting on the lower strand of the belt, said rows extending lengthwise of the belt, a beam above each of said rows and extending lengthwise of it, means connecting each beam to the row of rolls beneath it, means for adjusting the beams vertically independently of one another to adjust the pressure of the rolls against the belt, and means restraining movement of the beams in other directions.
Claim 3
Dependent Claim
19 words
In apparatus according to claim 1, said adjusting means including fluid pressure cylinders connecting said restraining means and beams.
Claim 4
Dependent Claim
59 words
In apparatus according to claim 1, said restraining means including stationary cross members extending across said belt at the opposite ends of the beams, vertical guide members secured to said crOss members, and guide means connected to the ends of the beams, said guide means and guide members being interconnected to permit only vertical movement of the guide means.
Claim 5
Dependent Claim
74 words
In apparatus according to claim 1, said restraining means including stationary cross members extending across said belt at the opposite ends of the beams, vertical guide members secured to said cross members, guide means connected to the ends of the beams, said guide means and guide members being interconnected to permit only vertical movement of the guide means, and anti-friction means carried by an end of each beam and engaging the adjoining guide member.
Claim 6
Dependent Claim
28 words
In apparatus according to claim 3, said guide members forming vertical slots open toward the beams, and said guide means including vertical plates slidably disposed in said slots.
Claim 7
Dependent Claim
42 words
In apparatus according to claim 3, said guide members forming vertical slots open toward the beams, said guide means including vertical plates slidably disposed in said slots, and rollers mounted on horizontal axes on said plates and engaging the adjoining guide members.
Claim 8
Dependent Claim
60 words
In apparatus according to claim 1, said connecting means including an arm pivotally connected at one end to each roll, means pivotally connecting the opposite end of the arm to the beam above it on an axis parallel to the roll axis, and a spring mounted between each arm and the overlying beam and resisting upward swinging of the arm.
Claim 9
Dependent Claim
30 words
In apparatus according to claim 7, each arm being pivotally connected to a roll by means of a shaft rigidly mounted in the roll and rotatably mounted in the arm.
Claim 10
Dependent Claim
110 words
In apparatus according to claim 8, each roll being provided with an axial recess extending inwardly from an end of the roll, one end of said shaft being rigidly mounted in the roll and extending into said recess, an arm extending laterally into the roll recess and provided with an axial socket, and spaced bearings mounted in said socket and receiving said shaft, the wall of the socket having a passage therein extending from a side of the socket upwardly through the arm between said bearings, and said passage being located at the side of the socket adjacent the side of said shaft that moves downwardly as the shaft rotates.
References Cited (Backward Citations)
US2993527A
Cited
US3676268A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-08-20 | 1977-02-19 | 1977-08-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-08-20 | 1981-02-19 | 1981-08-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-08-20 | 1985-02-19 | 1985-08-21 | $7700.00 | Window Closed / Lapsed |