US3680175A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Linear apparatus for the production of non-woven fabrics
Assignee: Glad Products Co
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Filing: 1970-07-02
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Granted: 1972-08-01
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Expires: 1990-07-02
Abstract
Abstract Apparatus for producing a non-woven fibrous element includes a foraminous member for collecting a fiber deposit, a suction arrangement for exhausting a carrier fluid through a work section of the foraminous member, and means for supplying a quantity of fibers suspended in a carrier fluid to the work section. According to the invention, this apparatus further comprises means for delivering a slurry of fibers to the work section, including a plurality of arcuately spaced discharge orifices and drive means for rotating the discharge orifices causing them to scan the surface of the work section and deposit a uniform layer of fibers thereon.
Inventors
- 👤 Ewald Albert Kamp
- 👤 John C Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 14:14
CPC Classifications
D; D04; D04H; D04H1/00; D04H1/70; D04H1/72
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
160 words
Apparatus for producing a non-woven fibrous element comprising: a foraminous member, including a planar work section for collecting a fiber deposit; suction means confronting one surface of said work section for exhausting a carrier fluid through said section; supply means for providing a quantity of fibers suspended in said carrier fluid, including stationary horizontal duct means disposed at said work section and having a longitudinally extending outlet confronting and coinciding with the width of said planar work section opposite said suction means; and fiber delivery means surrounding said duct means and generally confronting said opposite surface of said work section, said delivery means being connected to said duct means and including a plurality of arcuately spaced discharge orifice means receiving a suspension of fibers from said duct means outlet and drive means for rotating said discharge orifice means whereby to cause said orifice means to scan the planar surface of said work section and deposit a layer of fibers thereon.
Claim 2
Dependent Claim
160 words
Apparatus for producing a non-woven fibrous element comprising: a foraminous member, including a planar work section for collecting a fiber deposit; suction means confronting one surface of said work section for exhausting a carrier fluid through said section; supply means for providing a quantity of fibers suspended in said carrier fluid, including stationary horizontal duct means disposed at said work section and having a longitudinally extending outlet confronting and coinciding with the width of said planar work section opposite said suction means; and fiber delivery means surrounding said duct means and generally confronting said opposite surface of said work section, said delivery means being connected to said duct means and including a plurality of arcuately spaced discharge orifice means receiving a suspension of fibers from said duct means outlet and drive means for rotating said discharge orifice means whereby to cause said orifice means to scan the planar surface of said work section and deposit a layer of fibers thereon.
Claim 3
Dependent Claim
37 words
Apparatus according to claim 1 wherein said foraminous member comprises a flexible, endless belt; and wherein said apparatus further includes means for causing continuous longitudinal movement of said belt whereby to produce a substantially endless fibrous web.
Claim 4
Dependent Claim
16 words
Apparatus according to claim 1 which further includes means for adjusting the width of said outlet.
Claim 5
Dependent Claim
19 words
Apparatus according to claim 1 wherein said outlet is wider at its upstream end than at its downstream end.
Claim 6
Dependent Claim
36 words
Apparatus according to claim 1 wherein said outlet is a uniform width slot and wherein said duct includes a conduit section of comparatively large cross-sectional area and a tapering throat communicating said conduit with said slot.
Claim 7
Dependent Claim
37 words
Apparatus according to claim 5 wherein said slot is deeper at its upstream end than at its downstream end and wherein the root of said slot follows a curve from said upstream end to said downstream end.
Claim 8
Dependent Claim
12 words
Apparatus according to claim 6 wherein said curve is a continuous curve.
Claim 9
Dependent Claim
25 words
Apparatus according to claim 1 wherein said supply means further includes valve means for selectively increasing and decreasing the effective delivery area of said outlet.
Claim 10
Dependent Claim
16 words
Apparatus according to claim 8 wherein said valve means comprises a plurality of adjustable positionable louvers.
Claim 11
Dependent Claim
26 words
Apparatus according to claim 1 wherein said apparatus further includes a substantially imperforate shield disposed over said work section and substantially surrounding said fiber delivery means.
Claim 12
Dependent Claim
55 words
Apparatus according to claim 1 wherein said fiber delivery means includes a plurality of curved vanes defining said discharge orifices therebetween, said vanes directing the suspension of fibers radially outwardly of the center of rotation of said discharge orifices; and wherein said drive means rotates the fiber-carrying discharge orifices generally away from said work 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) | 1975-08-01 | 1976-01-31 | 1976-08-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-01 | 1980-01-31 | 1980-08-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-01 | 1984-01-31 | 1984-08-01 | $7700.00 | Window Closed / Lapsed |