US4241881A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fiber separation from pulp sheet stacks
Assignee: Kimberly Clark Worldwide Inc
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Filing: 1979-07-12
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Granted: 1980-12-30
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Expires: 1999-07-12
Abstract
Abstract A method for separating fibers from a stack of pulp sheets. The stack of pulp sheets is fed slowly and continuously to the fiberizing means of fiberizing apparatus and in shingled relation so that the tails of individual sheets are presented singly to the fiberizing means. The fiberizing apparatus may be conventional hammermill or pulp picking equipment and suitably includes an output screen to limit the size of unfiberized particles which may pass from the fiberizer.
Inventors
- 👤 Edward P. Laumer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 23:17
CPC Classifications
D; D21; D21H; D21H5/00; D21H5/26; D21H5/2607; D21H5/2614; D21B; D21B1/00; D21B1/04; D21B1/06; D21B1/066; D21B1/068; D21H11/00; D21H11/14
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
127 words
A method for separating fibers from a stack of planar pulp sheets, each of said pulp sheets being defined by forward and rearward edges and opposed lateral side edges, and defining a longitudinal axis aligned perpendicular to said forward and rearward edges, comprising: (a) feeding said stack of pulp sheets edgewise in shingled relation to a hammermill-type fiberizing means, (b) aligning said pulp sheets to said fiberizing means such that said longitudinal axes of said pulp sheets are aligned generally radially to said rotating fiberizing means, (c) fiberizing each of said shingled pulp sheets from said forward edge to said rearward edge along said longitudinal axis such that said forward and rearward edges of each of said pulp sheets are presented to said fiberizing means substantially singly.
Claim 2
Independent Claim
127 words
A method for separating fibers from a stack of planar pulp sheets, each of said pulp sheets being defined by forward and rearward edges and opposed lateral side edges, and defining a longitudinal axis aligned perpendicular to said forward and rearward edges, comprising: (a) feeding said stack of pulp sheets edgewise in shingled relation to a hammermill-type fiberizing means, (b) aligning said pulp sheets to said fiberizing means such that said longitudinal axes of said pulp sheets are aligned generally radially to said rotating fiberizing means, (c) fiberizing each of said shingled pulp sheets from said forward edge to said rearward edge along said longitudinal axis such that said forward and rearward edges of each of said pulp sheets are presented to said fiberizing means substantially singly.
Claim 3
Dependent Claim
32 words
The method for separating fibers from a stack of pulp sheets as claimed in claim 1 comprising feeding said stack of pulp sheets edgewise in shingled relation to a picker-type fiberizing means.
Claim 4
Dependent Claim
55 words
A method for separating fibers from a stack of pulp sheets as claimed in claim 1, comprising feeding said stack of pulp sheets in shingled relation radially to said fiberizing means, with said forward edges of said shingled pulp sheets aligned at an acute angle to a line of travel of said shingled pulp sheets.
Claim 5
Dependent Claim
36 words
A method as claimed in claim 3, comprising feeding said stack of pulp sheets in shingled relation radially to said fiberizing means at a 45° angle to said line of travel of said shingled pulp sheets.
Claim 6
Dependent Claim
46 words
A method for separating fibers from a stack of pulp sheets as claimed in claim 1 in which the feeding of the stack of pulp sheets edgewise in shingled relation to the rotating fiberizing means is off the horizontal center line of the rotating fiberizing means.
Claim 7
Dependent Claim
58 words
A method for separating fibers from a stack of pulp sheets as claimed in claim 1 in which the direction of rotation of the fiberizing means is such that the fiberizing means contacts the main body of the stack of shingled pulp sheets prior to contacting the rearward edge of the shingled sheet which is most nearly fiberized.
Claim 8
Dependent Claim
71 words
A method for separating fibers from a stack of pulp sheets as claimed in claim 1 in which the direction of rotation of the fiberizing means relative to the stack of pulp sheets is such that the rearward edge of the sheet which is most nearly fiberized is contacted by the fiberizing means prior to contact of the fiberizing means with the main body of the stack of shingled pulp sheets.
Claim 9
Dependent Claim
60 words
A method for separating fibers from a stack of pulp sheets as claimed in claim 1 in which the lowermost sheet of the stack of pulp sheets is fed to the rotating fiberizing means substantially horizontally and is contacted by the rotating fiberizing means in its rotation prior to contact with the main body of the stack of pulp sheets.
Claim 10
Dependent Claim
52 words
A method for separating fibers from a stack of pulp sheets as claimed in claim 1 in which the rotating fiberizing means rotates on a horizontal axis and the stack of pulp sheets is fed to the fiberizing means generally horizontally and above the horizontal axis of rotation of the fiberizing means.
Claim 11
Dependent Claim
47 words
A method for separating fibers from a stack of pulp sheets as claimed in claim 1 in which the rotating fiberizing means rotates on a horizontal axis and the stack of pulp sheets is fed to the fiberizing means at an acute angle to the horizontal axis.
Claim 12
Dependent Claim
26 words
A method as claimed in claim 10 in which the stack of pulp sheets is fed at an acute angle to and above the horizontal axis.
Claim 13
Independent Claim
206 words
A method for separating fibers from a plurality of stacks of planar pulp sheets, each of said pulp sheets being defined by a forward and rearward edge and opposed lateral side edges, and defining a longitudinal axis aligned perpendicular to said forward and rearward edges, comprising: (a) feeding said plurality of stacks of pulp sheets edgewise in shingled relation to a hammermill-type fiberizing means, (b) aligning said plurality of stacks of pulp sheets to said fiberizing means such that said longitudinal axes of said pulp sheets within each of said stacks of pulp sheets are aligned generally radially to said rotating fiberizing means, (c) fiberizing each of said shingled pulp sheets within each of said plurality of stacks from said forward edge to said rearward edge along said longitudinal axis such that said forward and rearward edges of each of said pulp sheets are presented to said fiberizing means substantially singly, and (d) positioning said stacks of shingled pulp sheets such that at least one stack of pulp sheets is contacted by said fiberizing means above a horizontal axis through an axis of rotation of said fiberizing means and at least one stack of pulp sheets is contacted by said fiberizing means below said horizontal axis.
Claim 14
Independent Claim
206 words
A method for separating fibers from a plurality of stacks of planar pulp sheets, each of said pulp sheets being defined by a forward and rearward edge and opposed lateral side edges, and defining a longitudinal axis aligned perpendicular to said forward and rearward edges, comprising: (a) feeding said plurality of stacks of pulp sheets edgewise in shingled relation to a hammermill-type fiberizing means, (b) aligning said plurality of stacks of pulp sheets to said fiberizing means such that said longitudinal axes of said pulp sheets within each of said stacks of pulp sheets are aligned generally radially to said rotating fiberizing means, (c) fiberizing each of said shingled pulp sheets within each of said plurality of stacks from said forward edge to said rearward edge along said longitudinal axis such that said forward and rearward edges of each of said pulp sheets are presented to said fiberizing means substantially singly, and (d) positioning said stacks of shingled pulp sheets such that at least one stack of pulp sheets is contacted by said fiberizing means above a horizontal axis through an axis of rotation of said fiberizing means and at least one stack of pulp sheets is contacted by said fiberizing means below said horizontal axis.
Claim 15
Dependent Claim
36 words
The method for separating fibers from a plurality of stacks of pulp sheets as claimed in claim 12 comprising feeding said plurality of stacks of pulp sheets edgewise in shingled relation to a picker-type fiberizing means.
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) | 1983-12-30 | 1984-06-30 | 1984-12-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-12-30 | 1988-06-30 | 1988-12-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-12-30 | 1992-06-30 | 1992-12-30 | $7700.00 | Window Closed / Lapsed |