Patent US4193751A successfully refreshed from Google Patents.
US4193751A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multiple distributor heads for laying dry fibers
Assignee: Georgia Pacific Consumer Products LP
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Filing: 1978-06-15
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Granted: 1980-03-18
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Expires: 1998-06-15
Abstract
Abstract Multiple distributor heads of the Kroyer type in side-by-side position over a common suction tunnel for laying fibrous material onto a foraminous forming-wire screen travelling along the tunnel.
Inventors
- 👤 Fredric N. Miller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 10:49
CPC Classifications
D; D04; D04H; D04H1/00; D04H1/70; D04H1/72
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
112 words
Apparatus for disposing a uniform web of dry fibers on a forming-wire screen, comprising: a plurality of fiber distributors including housings disposed in side-by-side relationship with no gap therebetween and having bottom openings disposed in side-by-side relationship; foraminous screens extending over said openings; a forming tunnel disposed beneath said openings; a movable forming-wire screen disposed within said tunnel for travel therethrough sequentially beneath one then another of said openings; means for introducing dry fibers to said housings for discharge through said openings, and the screens extending thereover, onto said forming-wire screen as it is moved therepast; and sealing means on opposite ends of said tunnel accommodating movement of said forming-wire screen therethrough.
Claim 2
Dependent Claim
112 words
Apparatus for disposing a uniform web of dry fibers on a forming-wire screen, comprising: a plurality of fiber distributors including housings disposed in side-by-side relationship with no gap therebetween and having bottom openings disposed in side-by-side relationship; foraminous screens extending over said openings; a forming tunnel disposed beneath said openings; a movable forming-wire screen disposed within said tunnel for travel therethrough sequentially beneath one then another of said openings; means for introducing dry fibers to said housings for discharge through said openings, and the screens extending thereover, onto said forming-wire screen as it is moved therepast; and sealing means on opposite ends of said tunnel accommodating movement of said forming-wire screen therethrough.
Claim 3
Dependent Claim
31 words
Apparatus according to claim 1, and further comprising means for maintaining a partial vacuum beneath said movable forming-wire screen to draw fibers discharged from said bottom openings onto said forming-wire screen.
Claim 4
Dependent Claim
45 words
Apparatus according to claim 2, and further characterized in that the sealing means on at least the end of the tunnel from which said movable screen leaves comprises a sealing roll disposed to compress a web formed on said screen as it leaves said tunnel.
References Cited (Backward Citations)
US3598680A
Cited
US4014635A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-03-18 | 1983-09-17 | 1984-03-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-03-18 | 1987-09-17 | 1988-03-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-03-18 | 1991-09-17 | 1992-03-18 | $7700.00 | Window Closed / Lapsed |