US3770126A
Expired / Lapsed
US
⏱️ 0.0 years remaining
System for separating fibres from a fibrous suspension
Assignee: ALLIMAND ATEL CONST
•
Filing: 1973-01-02
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Granted: 1973-11-06
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Expires: 1993-01-02
Abstract
Abstract A system for separating fibre from a fibrous suspension by contacting the suspension with a receptacle having needles extending therefrom on which the fibres are caused to engage and are removed from the suspension.
Inventors
- 👤 G Jacquelin
- 👤 Hampartzoumian
- 👤 J Louvat
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 17:50
CPC Classifications
B; B01; B01D; B01D35/00; B01D35/10
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
30 words
A method as in claim 1, wherein the retained fibres are caused to slide by directing against the needles and towards their free ends, a jet of fluid under pressure.
Claim 2
Dependent Claim
19 words
A method as in claim 1, wherein the retained fibres are caused to slide by inclining the needles downwards.
Claim 3
Dependent Claim
22 words
A method as in claim 2, including directing against the needles and towards their free ends, a jet of fluid under pressure.
Claim 4
Independent Claim
56 words
A device for separating fibres from a fibrous suspension, comprising at least one movable support which moves over one portion of its path into an enclosure, fed with fibrous suspension and over a second portion of its path opposite a receptacle for the fibres to be separated, this movable support being furnished with needles extending therefrom.
Claim 5
Dependent Claim
35 words
A device as in claim 5, including also at least one nozzle for distribution of a fluid under pressure, directed towards the receptacle for fibres to be separated across the path of the movable support.
Claim 6
Dependent Claim
19 words
A device as in claim 5, wherein the needles are arranged in a diamond pattern on the movable support.
Claim 7
Dependent Claim
24 words
A device in claim 5, wherien the needles are attached at their roots to the movable support and are free at their opposite ends.
Claim 8
Dependent Claim
15 words
A device as in claim 8, wherein the needles are perpendicular to the movable support.
Claim 9
Dependent Claim
21 words
A device as in claim 8, wherein the needles are inclined so that their tips are located upstream of their roots.
Claim 10
Dependent Claim
14 words
A device as in claim 5, wherein the movable support is a continuous belt.
Claim 11
Dependent Claim
14 words
A device as in claim 5, wherein the movable support is a rotatable disc.
Claim 12
Dependent Claim
96 words
A device as in claim 11, wherein the enclosure containing the suspension consists of a tank, two walls of which are parallel with and separated from the immersed portion of the movable support whilst the other two walls are located near the edges of this portion in order to define a duct for the circulation of the suspension and the channelling of the needles, the duct being fed at one end from a transfer volume arranged in the tank above the level of a weir provided at the end for the exhaust of the treated suspension.
Claim 13
Dependent Claim
53 words
A device as in claim 11, wherein the enclosure containing the suspension is defined by the facing portions of two mobile supports mounted face to face and by two walls located close to the edges of these portions, this enclosure being open at its two ends for feeding in and exhanusting the suspension.
Claim 14
Dependent Claim
53 words
A device according to claim 22, wherein the enclosure containing the susepnsion is defined by the facing portions of two mobile supports mounted face to face and by two walls located close to the edges of these portions, this enclosure being open at its two ends for feeding in and exhausting the suspension.
Claim 15
Dependent Claim
30 words
A device as in claim 12, wherein the enclosure for containing the suspension is a tank in the shape of a sector of a cylinder centered on the rotatable disc.
Claim 16
Dependent Claim
79 words
A device as in claim 5, wherein the receptacle for fibres is a member having gauged orifices such as a filter cloth or a perforated plate located straight below the place at which the tips of the needles in the portion of the movable support leaving the enclosure circulate at a level lower than that of the roots of these needles and into the volume of action of the nozzle or nozzles for distribution of the fluid under pressure.
Claim 17
Dependent Claim
30 words
A device as in claim 16, wherein the enclosure for containing the suspension is a tank in the shape of a sector of a cylinder centered on the rotating disc.
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) | 1976-11-05 | 1977-05-07 | 1977-11-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-11-05 | 1981-05-07 | 1981-11-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-11-05 | 1985-05-07 | 1985-11-06 | $7700.00 | Window Closed / Lapsed |