Patent US3796149A successfully refreshed from Google Patents.
US3796149A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressing device for the removal of water from cellulose or the like
Assignee: ANDRITZ-RUTHNER Inc
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Filing: 1972-03-27
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Granted: 1974-03-12
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Expires: 1992-03-27
Abstract
Abstract This invention relates to an improvement in a pressing device for the removal of water from solid materials, particularly cellulose or similar fibrous material, comprising pairs of upper and lower horizontal rollers between which a sheet or web of material to be dehydrated is passed on a sieve or between two sieves in a preliminary pressing station, and common bar means supporting at least part of the rollers on one side of said sieve or sieves and being adjustable in the direction toward the sieve. The improvement comprises means pivotally mounting said common bar means at a pivot axis which is pivotal in the direction toward the sieve and which is offset from the center of gravity of the roller axle bearings in the traveling direction of the sieve.
Inventors
- 👤 O Heissenberger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 21:43
CPC Classifications
B; B30; B30B; B30B9/00; B30B9/02; B30B9/24
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
164 words
In a pressing device for the removal of water from solid materials comprising a plurality of pairs of rollers, consisting of upper and lower horizontally disposed rollers, respectively, spaced from one another along the direction of travel of the material to be dehydrated through said pressing device and between which said material to be dehydrated is passed on a sieve or between two sieves and common bar means supporting at least a part of said rollers on one side of said sieve, the improvement comprising pivot means supporting said bar means and through which pressure is applied to said bar means toward said sieve and which is mounted on said bar means between the first and last of said rollers supported by said bar means and offset from and forward, with respect to the direction of travel of said material to be dehydrated through said pressing device, of the center of gravity of said bar means and said rollers supported by said bar means.
Claim 2
Dependent Claim
164 words
In a pressing device for the removal of water from solid materials comprising a plurality of pairs of rollers, consisting of upper and lower horizontally disposed rollers, respectively, spaced from one another along the direction of travel of the material to be dehydrated through said pressing device and between which said material to be dehydrated is passed on a sieve or between two sieves and common bar means supporting at least a part of said rollers on one side of said sieve, the improvement comprising pivot means supporting said bar means and through which pressure is applied to said bar means toward said sieve and which is mounted on said bar means between the first and last of said rollers supported by said bar means and offset from and forward, with respect to the direction of travel of said material to be dehydrated through said pressing device, of the center of gravity of said bar means and said rollers supported by said bar means.
Claim 3
Dependent Claim
47 words
A device in accordance with claim 1 wherein the pressing device is a device for the removal of water from a sheet or web of cellulose or similar fibrous material and the rollers supported by the bar means are in a preliminary pressing station of said device.
Claim 4
Dependent Claim
23 words
A device in accordance with claim 2 wherein all of the rollers in the preliminary pressing station are supported by the bar means.
Claim 5
Dependent Claim
26 words
A device in accordance with claim 1 wherein the lower rollers are mounted in the bar means and the upper rollers complementary thereto are rigidly mounted.
Claim 6
Dependent Claim
19 words
A device in accordance with claim 4 wherein the lower rollers are adjustable with respect to the upper rollers.
Claim 7
Dependent Claim
33 words
A device in accordance with claim 1 wherein the pivot means is mounted on one end of an arm means and said arm means is mounted on a fixedly mounted second pivot means.
Claim 8
Dependent Claim
21 words
A device in accordance with claim 6 wherein the second pivot means is located intermediate the ends of the arm means.
Claim 9
Dependent Claim
36 words
A device in accordance with claim 7 wherein pressure is applied through the first pivot means by pressure means operatively acting on the free end of the arm means in a direction away from the sieve.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-03-11 | 1977-09-10 | 1978-03-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-03-11 | 1981-09-10 | 1982-03-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-03-11 | 1985-09-10 | 1986-03-12 | $7700.00 | Window Closed / Lapsed |