Patent US4330947A successfully refreshed from Google Patents.
US4330947A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for aiding water removal of a paper web by independently controlling the steam flow in a plurality of compartments
Assignee: Weavexx LLC
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Filing: 1980-10-27
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Granted: 1982-05-25
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Expires: 2000-10-27
Abstract
Abstract An apparatus for aiding water removal from a moving paper web directs steam to a portion of the web and controls the distribution of steam in both the cross-machine and the machine direction of the web. In the preferred embodiment, a matrix of compartments is used to supply steam to the web, and the steam supply to each compartment is independently controlled.
Inventors
- 👤 Benjamin A. Throp
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 18:41
CPC Classifications
D; D21; D21F; D21F7/00; D21F7/003; D21F7/008; Y; Y10; Y10T; Y10T137/00; Y10T137/4673; Y10T137/4807; Y10T137/8593; Y10T137/877; Y10T137/87877
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
205 words
An apparatus for aiding water removal from a paper web comprising: two parallel I-beams turned on their side and acting as end structural members; a plurality of I-beams standing upright, placed parallel to and between the end structural members and serving as intermediate structural members; a plurality of stiffeners perpendicular to and joined with the I-beams forming a matrix of compartments; a cover support secured to and spanning the I-beams and the stiffeners and forming a side of the compartments farthest from the paper web; V-shaped baffles forming a side of each compartment closest to the paper web, with the vertices of the baffles pointing away from the web; a gap between the V-shaped baffles at the vertices of the V for permitting steam to exit the compartments to the web; at least one primary steam duct formed by the cover support and the upper troughs of the sideways I-beam end members; a plurality of pipes with each of said compartments being connected by at least one of said pipes to said at least one primary steam duct; and a plurality of valves, each valve controlling the flow of steam through one of the plurality pipes thereby independently controlling the steam flow to each compartment.
Claim 2
Independent Claim
205 words
An apparatus for aiding water removal from a paper web comprising: two parallel I-beams turned on their side and acting as end structural members; a plurality of I-beams standing upright, placed parallel to and between the end structural members and serving as intermediate structural members; a plurality of stiffeners perpendicular to and joined with the I-beams forming a matrix of compartments; a cover support secured to and spanning the I-beams and the stiffeners and forming a side of the compartments farthest from the paper web; V-shaped baffles forming a side of each compartment closest to the paper web, with the vertices of the baffles pointing away from the web; a gap between the V-shaped baffles at the vertices of the V for permitting steam to exit the compartments to the web; at least one primary steam duct formed by the cover support and the upper troughs of the sideways I-beam end members; a plurality of pipes with each of said compartments being connected by at least one of said pipes to said at least one primary steam duct; and a plurality of valves, each valve controlling the flow of steam through one of the plurality pipes thereby independently controlling the steam flow to each compartment.
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) | 1985-05-24 | 1985-11-23 | 1986-05-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-05-24 | 1989-11-23 | 1990-05-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-05-24 | 1993-11-23 | 1994-05-25 | $7700.00 | Window Closed / Lapsed |