US3709441A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Machine for disintegration of cellulose pulp sheets
Assignee: Stille Werner AB
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Filing: 1971-02-24
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Granted: 1973-01-09
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Expires: 1991-02-24
Abstract
Abstract A machine for disintegration of cellulose pulp sheet which comprises an essentially vertical magazine to receive pulp sheet bales with the sheets preferably lying horizontally, said magazine having a bottom consisting of a bed of slightly spaced, mutually parallel tearing tooth rods which are longitudinally relatively movable to one another and may include two groups which are alternately movable in opposite directions.
Inventors
- 👤 H Hessner
- 👤 P Nilsson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 11:51
CPC Classifications
D; D21; D21B; D21B1/00; D21B1/04; D21B1/06; D21B1/066
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
67 words
A machine for disintegration and drydefibration of cellulose pulp sheets, comprising an essentially vertical magazine to receive pulp sheet bales with the sheets lying horizontally, said magazine having a bottom consisting of a bed of slightly spaced, mutually parallel tearing tooth rods, of which at least some are longitudinally movable to-and-fro, said tearing tooth rods being divided into two groups which are alternately movable in opposite directions.
Claim 2
Dependent Claim
67 words
A machine for disintegration and drydefibration of cellulose pulp sheets, comprising an essentially vertical magazine to receive pulp sheet bales with the sheets lying horizontally, said magazine having a bottom consisting of a bed of slightly spaced, mutually parallel tearing tooth rods, of which at least some are longitudinally movable to-and-fro, said tearing tooth rods being divided into two groups which are alternately movable in opposite directions.
Claim 3
Dependent Claim
31 words
A machine as claimed in claim 1, wherein the tearing tooth rods of each group are mutually interconnected and in that the two groups are alternately movable to-and-fro in opposite directions.
Claim 4
Dependent Claim
25 words
A machine as claimed in claim 2, wherein the two groups of tearing tooth rods are movable to-and-fro by means of the same drive mechanism.
Claim 5
Dependent Claim
25 words
A machine as claimed in claim 1, further including stripper plates disposed transversely of said rods at the ends of the tearing tooth rod bed.
Claim 6
Dependent Claim
22 words
A machine as claimed in claim 3 wherein said drive mechanism includes a crank and lever means having adjustable stroke and frequency.
Claim 7
Dependent Claim
43 words
A machine for disintegration and drydefibration of cellulose pulp sheets, comprising an essentially vertical magazine to receive pulp sheet bales, said magazine having a bottom consisting of a bed of slightly spaced, mutually parallel tearing tooth rods longitudinally relatively movable to one another.
Claim 8
Dependent Claim
43 words
A machine for disintegration and drydefibration of cellulose pulp sheets, comprising an essentially vertical magazine to receive pulp sheet bales, said magazine having a bottom consisting of a bed of slightly spaced, mutually parallel tearing tooth rods longitudinally relatively movable to one another.
Claim 9
Dependent Claim
18 words
A machine as claimed in claim 6, wherein the tearing tooth rods are divided alternately into two groups.
Claim 10
Dependent Claim
34 words
A machine as claimed in claim 7 further including stripper plates having protrusions extending down between the tearing tooth rods disposed transversely of said rods at the ends of the tearing tooth rod bed.
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) | 1976-01-09 | 1976-07-10 | 1977-01-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-01-09 | 1980-07-10 | 1981-01-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-01-09 | 1984-07-10 | 1985-01-09 | $7700.00 | Window Closed / Lapsed |