US4431045A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for pressure treatment of a moving web
Assignee: LARCEL DEVELOPMENTS Inc
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Filing: 1982-03-22
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Granted: 1984-02-14
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Expires: 2002-03-22
Abstract
Abstract An apparatus pressure treats a moving web by pressing the web against a surface. The apparatus comprises a continuous link chain and a chain support. The chain support supports a moving length of the chain close to the surface so the length of chain has a shape complementary to the shape of the surface. A length of web moving with the chain is pressed between the chain and the surface.
Inventors
- 👤 Lars G. Josefsson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 17:42
CPC Classifications
D; D21; D21F; D21F3/00; D21F3/02; D21F3/0209; D21F3/0218; D21F3/0227
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
129 words
An apparatus for pressure treating a body of continuously moving material, comprising: a curved movable surface; a movable flexible belt facing the movable surface and spaced a small distance therefrom so as to accommodate the moving material between the surface and the belt; a continuous movable roller chain disposed behind and in contact with the belt for providing support thereto; chain support means for supporting a moving length of the rolling chain in pressure contact with the belt in a shape complementary to the shape of the surface; the support means including a flexible, bag-like member capable of receiving a fluid and being comformable to the shape of the surface, such that the length of material under simultaneous pressure engagement between the surface and the belt can be varied.
Claim 2
Independent Claim
129 words
An apparatus for pressure treating a body of continuously moving material, comprising: a curved movable surface; a movable flexible belt facing the movable surface and spaced a small distance therefrom so as to accommodate the moving material between the surface and the belt; a continuous movable roller chain disposed behind and in contact with the belt for providing support thereto; chain support means for supporting a moving length of the rolling chain in pressure contact with the belt in a shape complementary to the shape of the surface; the support means including a flexible, bag-like member capable of receiving a fluid and being comformable to the shape of the surface, such that the length of material under simultaneous pressure engagement between the surface and the belt can be varied.
Claim 3
Dependent Claim
16 words
An apparatus as claimed in claim 1, wherein the member is of an impervious, elastomeric material.
Claim 4
Dependent Claim
27 words
An apparatus as claimed in claim 2, further comprising a stationary, continuous belt extending about the member, the chain being guidably received on the stationary, continuous belt.
Claim 5
Dependent Claim
15 words
An apparatus as claimed in claim 3, wherein the stationary, continuous belt is of polyurethane.
Claim 6
Dependent Claim
21 words
An apparatus as claimed in claim 3, wherein the stationary, continuous belt has a peripheral guide for guidably receiving the chain.
Claim 7
Dependent Claim
31 words
An apparatus as claimed in claim 3, further comprising lateral supports for the member on each side of the fixed continuous belt which limit lateral expansion of the hollow flexible member.
Claim 8
Dependent Claim
14 words
An apparatus as claimed in claim 6, the lateral supports being flat and plate-like.
Claim 9
Dependent Claim
28 words
An apparatus as claimed in claim 6, comprising two said members, the stationary, continuous belt extending about both said members and the tie rod extending between the members.
Claim 10
Dependent Claim
24 words
An apparatus as claimed in claim 2 or claim 3, further comprising a conduit connected to the member for supplying fluid to the member.
References Cited (Backward Citations)
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US3093535A
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US3671389A
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US3799052A
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US3808096A
Cited
US3973483A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-02-13 | 1987-08-15 | 1988-02-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-02-13 | 1991-08-15 | 1992-02-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-02-13 | 1995-08-15 | 1996-02-14 | $7700.00 | Window Closed / Lapsed |