US4503765A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Press for the removal of moisture from wet webs of fiber material
Assignee: JM Voith GmbH
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Filing: 1983-02-07
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Granted: 1985-03-12
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Expires: 2003-02-07
Abstract
Abstract A press for applying pressure to a moving web of fiber material to squeeze water from the web by means of auxiliary belts and comprising a pressure roll, pressure shoes mounted on the periphery of a rotary carrier in circumferentially spaced relation to each other, and a pressure belt extending about the carrier and shoes. The carrier is rotated by a motor to bring any one of the shoes into an operative position adjacent the pressure roll.
Inventors
- 👤 Christian Schiel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 21:11
CPC Classifications
D; D21; D21F; D21F3/00; D21F3/02; D21F3/0209; D21F3/0218
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
97 words
A press adapted for applying pressure to a moving web, comprising: a pressure roll, at least two pressure shoes respectively extending axially of said pressure roll only one of said pressure shoes at a time being closely spaced near said pressure roll to form a single pressure zone therewith, means for selectively moving a respective one of said pressure shoes between an operative position forming said single pressure zone with said pressure roll and an inoperative position away from said pressure roll, and a pressure belt adapted to engage said web which extends about said pressure shoes.
Claim 2
Dependent Claim
97 words
A press adapted for applying pressure to a moving web, comprising: a pressure roll, at least two pressure shoes respectively extending axially of said pressure roll only one of said pressure shoes at a time being closely spaced near said pressure roll to form a single pressure zone therewith, means for selectively moving a respective one of said pressure shoes between an operative position forming said single pressure zone with said pressure roll and an inoperative position away from said pressure roll, and a pressure belt adapted to engage said web which extends about said pressure shoes.
Claim 3
Dependent Claim
22 words
The press of claim 1 wherein at least one of said pressure shoes is shaped differently from the other said pressure shoes.
Claim 4
Dependent Claim
29 words
The press of claim 1 wherein a working surface of at least one of said pressure shoes has a radius of curvature different from the other said pressure shoes.
Claim 5
Dependent Claim
26 words
The press of claim 1 wherein said moving means is a rotary carrier having said pressure shoes disposed thereon in circumferentially spaced relation to each other.
Claim 6
Dependent Claim
15 words
The press of claim 4 further comprising pneumatic actuating means for rotating said rotary carrier.
Claim 7
Dependent Claim
15 words
The press of claim 4 further comprising fluid actuating means for rotating said rotary carrier.
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) | 1988-03-11 | 1988-09-10 | 1989-03-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-03-11 | 1992-09-10 | 1993-03-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-03-11 | 1996-09-10 | 1997-03-12 | $7700.00 | Window Closed / Lapsed |