US3671019A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for material fluffing
Assignee: Berwind Corp
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Filing: 1970-12-10
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Granted: 1972-06-20
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Expires: 1990-12-10
Abstract
Abstract Apparatus for the fluffing, delumping, pulping, or blending of various materials (e.g. moist fibrous filter or press cake). The infeed material is advanced through a fluffing chamber by a rotor having fluffing discs. A scuff plate surrounding the rotor is provided with rows of projections which create high turbulence in the air column carrying the material. The material is momentarily retained in dwell regions in the chamber for agitation.
Inventors
- 👤 Jesse J Tapscott
- 👤 Harold T Andersen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 14:13
CPC Classifications
B; B01; B01F; B01F27/00; B01F27/80; B01F27/86; B02; B02C; B02C18/00; B02C18/06; B02C18/08; B02C18/12
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
106 words
In fluffing apparatus, a housing having an inlet for receiving infeed material and an outlet for discharging the material, a rotor journaled for rotation within the housing, the rotor including a plurality of fluffing discs axially spaced to define dwell regions to momentarily retain suspended material for agitation, each disc including a plurality of peripheral blades having a pitch to advance the material toward said outlet upon rotation of the rotor, agitating means in the housing including a plurality of projections extending radially inwardly to create turbulence in the air column being advanced by the rotor for agitating said material, and means to rotate the rotor.
Claim 2
Dependent Claim
106 words
In fluffing apparatus, a housing having an inlet for receiving infeed material and an outlet for discharging the material, a rotor journaled for rotation within the housing, the rotor including a plurality of fluffing discs axially spaced to define dwell regions to momentarily retain suspended material for agitation, each disc including a plurality of peripheral blades having a pitch to advance the material toward said outlet upon rotation of the rotor, agitating means in the housing including a plurality of projections extending radially inwardly to create turbulence in the air column being advanced by the rotor for agitating said material, and means to rotate the rotor.
Claim 3
Dependent Claim
34 words
Apparatus as in claim 1 wherein the pitch of said blades progressively increases for respective discs in the direction of material flow to move the material at an increasing velocity as product fluffing progresses.
Claim 4
Dependent Claim
30 words
Apparatus as in claim 1 wherein said blades comprise radially outward extending elements integral with respective discs, each element being twisted about a radial axis to define said blade pitch.
Claim 5
Dependent Claim
22 words
Apparatus as in claim 1 and including material expeller means downstream of the fluffing discs to discharge the material through said outlet.
Claim 6
Dependent Claim
36 words
Apparatus as in claim 1 wherein the rotor includes cylindrical wall means extending between adjacent discs intermediate the radial dimension thereof to define said dwell regions with the radially outward overhanging disc edges and the housing.
Claim 7
Dependent Claim
28 words
Apparatus as in claim 1 wherein the agitating means comprises cylindrical scuff plate means positioned in the housing in close-spaced relationship around the outer periphery of said blades.
Claim 8
Dependent Claim
45 words
Apparatus as in claim 6 wherein said scuff plate means comprises a plurality of elongate projections arranged in a plurality of superposed rows, the projections being inclined across the direction of blade rotation to create turbulence in the air moving along the scuff plate means.
Claim 9
Dependent Claim
16 words
Apparatus as in claim 7 wherein the projections in adjacent rows are inclined in opposite directions.
Claim 10
Dependent Claim
29 words
Apparatus as in claim 8 wherein adjacent projections in adjacent rows are aligned along substantially normal axes to effect constantly changing air direction from row-to-row to create air turbulence.
Claim 11
Dependent Claim
13 words
Apparatus as in claim 7 wherein said projections are wedge-shaped in cross section.
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) | 1975-06-20 | 1975-12-20 | 1976-06-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-20 | 1979-12-20 | 1980-06-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-20 | 1983-12-20 | 1984-06-20 | $7700.00 | Window Closed / Lapsed |