Patent US3799052A successfully refreshed from Google Patents.
US3799052A
Expired / Lapsed
US
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Apparatus for the continuous pressure treatment of a web
Assignee: Individual
•
Filing: 1973-01-26
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Granted: 1974-03-26
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Expires: 1993-01-26
Abstract
Abstract The apparatus includes a drum and a pressure belt surrounding the drum almost completely with both drum and pressure belt being movable with the web disposed inbetween. A sleeve is disposed about the pressure belt as a supporting surface with a frictionreducing means, such as interconnected rollers, between the sleeve and pressure belt to transfer force. The sleeve ends are spaced apart to permit passage of the web and pressure belt while at the same time being urged together to impart a tensile force in the sleeve. This tensile force serves to exert a uniform pressure on the moving web substantially over the entire surface of the drum, which may be heated.
Inventors
- 👤 E Kusters
- 👤 V Appenzeller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 06:19
CPC Classifications
D; D21; D21G; D21G1/00; D21G1/006; B; B30; B30B; B30B5/00; B30B5/04; D06; D06C; D06C15/00; D06C15/06
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
105 words
An apparatus for the continuous pressure treatment of a web comprising a rotatable drum having a surface for engaging the web; a movable pressure belt looped about said drum for concurrent movement therewith with the web disposed between said drum and said belt; a sleeve forming a supporting surface about said belt, said sleeve being disposed around said drum surface for substantially more than 180* with a pair of opposed ends in spaced apart relation for passage of said belt therebetween; friction-reducing means between said sleeve and said belt; and means interconnecting said ends of said sleeve to impart a tensile stress in said sleeve.
Claim 2
Independent Claim
105 words
An apparatus for the continuous pressure treatment of a web comprising a rotatable drum having a surface for engaging the web; a movable pressure belt looped about said drum for concurrent movement therewith with the web disposed between said drum and said belt; a sleeve forming a supporting surface about said belt, said sleeve being disposed around said drum surface for substantially more than 180* with a pair of opposed ends in spaced apart relation for passage of said belt therebetween; friction-reducing means between said sleeve and said belt; and means interconnecting said ends of said sleeve to impart a tensile stress in said sleeve.
Claim 3
Dependent Claim
26 words
An apparatus as set forth in claim 1 wherein said friction-reducing means includes a plurality of rolling members rollably disposed between said sleeve and said belt.
Claim 4
Dependent Claim
16 words
An apparatus as set forth in claim 1 wherein said sleeve is a bent steel plate.
Claim 5
Dependent Claim
43 words
An apparatus as set forth in claim 1 which further comprises means for guiding said belt around said drum in the shape of a meander having a narrow neck and wherein said ends of said sleeve extend into the vicinity of said neck.
Claim 6
Dependent Claim
28 words
An apparatus as set forth in claim 1 wherein said means interconnecting said sleeve ends includes controllable force elements for exerting a tensile stress on said sleeve ends.
Claim 7
Dependent Claim
20 words
An apparatus as set forth in claim 5 wherein said elements are disposed outside of the width of the web.
Claim 8
Dependent Claim
18 words
An apparatus as set forth in claim 6 wherein said elements are directly connected with said sleeve ends.
Claim 9
Dependent Claim
61 words
An apparatus as set forth in claim 6 wherein said means interconnecting said sleeve ends further includes a pair of transverse yokes, each yoke being disposed along said neck across the width of the web and connected to said controllable force elements, and a plurality of force transmitting members connecting each yoke to said sleeve over the width of said sleeve.
Claim 10
Dependent Claim
48 words
An apparatus as set forth in claim 5 further comprising a bearing journalling said drum therein, and a support mounted on said bearing in the plane of said neck with a pair of said controllable force elements connected to opposite ends of said sleeve bearing on said support.
Claim 11
Dependent Claim
26 words
An apparatus as set forth in claim 9 wherein each controllable force element is independently connected to said support relative to an opposed controllable force element.
Claim 12
Dependent Claim
77 words
An apparatus as set forth in claim 5 further comprising a bearing journalling said drum therein and a support mounted on said bearing in the plane of said neck, wherein said means interconnecting said sleeve ends includes a pair of tensioning elements on each side of the web connected to said ends and to a common point with said force controllable element connected between said point and said support to displace said point away from said bearing.
Claim 13
Dependent Claim
32 words
An apparatus as set forth in claim 1 wherein said pressure belt is a steel belt and which further comprises an additional belt movably mounted between said steel belt and said drum.
Claim 14
Dependent Claim
22 words
An apparatus as set forth in claim 12 wherein the web is disposed to run between said additional belt and said drum.
Claim 15
Dependent Claim
23 words
An apparatus as set forth in claim 12 wherein the web is disposed to run between said additional belt and said pressure belt.
Claim 16
Dependent Claim
16 words
An apparatus as set forth in claim 12 wherein said additional belt is made of polyamide.
Claim 17
Dependent Claim
24 words
An apparatus as set forth in claim 12 including means for driving said drum and means for driving said belts at different peripheral speeds.
Claim 18
Dependent Claim
27 words
An apparatus as set forth in claim 1 wherein said pressure belt and said friction-reducing means run on endless paths extending around the outside of said drum.
Claim 19
Dependent Claim
32 words
An apparatus as set forth in claim 17 wherein said friction-reducing means includes rolling members in the form of a large number of endless roller chains advancing closely adjacent to one another.
Claim 20
Dependent Claim
22 words
An apparatus as set forth in claim 1 further including means for heating at least one of said drum and said sleeve.
Claim 21
Dependent Claim
25 words
An apparatus as set forth in claim 1 including means for driving said drum and means for driving said pressure belt at different peripheral speeds.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-03-25 | 1977-09-24 | 1978-03-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-03-25 | 1981-09-24 | 1982-03-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-03-25 | 1985-09-24 | 1986-03-26 | $7700.00 | Window Closed / Lapsed |