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US5456645A Expired / Lapsed US ⏱️ 0.0 years remaining

Roll

Assignee: Sulzer Escher Wyss GmbH
•
Filing: 1993-06-30
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Granted: 1995-10-10
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Expires: 2013-06-30
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Abstract

Abstract A roll includes a roll jacket (1) which is rotatably journalled on a stationary carrier (2), with an at least approximately stationary active element (3) being arranged between the roll jacket (1) and the carrier (2), and with the space (4) between the carrier (2) and the roll jacket (1) being at least partially filled with a liquid. Such rolls are in particular used in the manufacture or treatment of material webs. In order to reduce the undesired turbulence losses passages are provided which extend through the active elements (3) approximately in the circumferential direction of the roll.

Inventors

  • 👤 Christoph Link

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-27 07:12
CPC Classifications
F; F16; F16C; F16C13/00; F16C13/02; F16C13/022; F16C13/024; F16C13/026; F16C13/028; D; D21; D21G; D21G1/00; D21G1/02; D21G1/0206; D21G1/0213; D21G1/022

Claims Analysis

Total Claims: 10
Claim 1
Independent Claim 193 words
In a roll including; a roll jacket (1) rotatably journalled on a stationary carrier (2) for rotation in a circumferential direction (U) with a space between the roll jacket and the stationary carrier; at least one stationary active element (3) being arranged between the roll jacket (1) and the stationary carrier (2); a radially outwardly disposed active element head (6) contacting the roll jacket at a radially outwardly directed surface (9) on the at least one stationary active element (3); and, the space (4) between the stationary carrier (2) and the roll jacket (1) being at least partially filled with a liquid which is entrained by rotation of the roll jacket; the improvement to the stationary active element comprising: at least one passage (5) having respective passage openings and having a cross section sufficient for fluid flow extending in the circumferential direction (U) of the roll jacket passing through the radially outwardly disposed active element head (6) of the at least one stationary active element (3) to substantially enlarge a total cross section of the flow paths for the liquid to produce a low flow resistance for liquid entrained by the roll jacket.
Claim 2
Dependent Claim 193 words
In a roll including; a roll jacket (1) rotatably journalled on a stationary carrier (2) for rotation in a circumferential direction (U) with a space between the roll jacket and the stationary carrier; at least one stationary active element (3) being arranged between the roll jacket (1) and the stationary carrier (2); a radially outwardly disposed active element head (6) contacting the roll jacket at a radially outwardly directed surface (9) on the at least one stationary active element (3); and, the space (4) between the stationary carrier (2) and the roll jacket (1) being at least partially filled with a liquid which is entrained by rotation of the roll jacket; the improvement to the stationary active element comprising: at least one passage (5) having respective passage openings and having a cross section sufficient for fluid flow extending in the circumferential direction (U) of the roll jacket passing through the radially outwardly disposed active element head (6) of the at least one stationary active element (3) to substantially enlarge a total cross section of the flow paths for the liquid to produce a low flow resistance for liquid entrained by the roll jacket.
Claim 3
Dependent Claim 32 words
In a roll according to claim 1 further including; the at least one passage (5) lies at an angle of a maximum of 25° to the circumferential direction (U) of the roll.
Claim 4
Dependent Claim 35 words
In a roll according to claim 1 further including: a preferably flexible extension piece (7) secured to the at least one stationary active element (3) beyond the respective passage openings adjacent the roll jacket (1).
Claim 5
Dependent Claim 16 words
In a roll according to claim 3 further including; the extension piece (7) has apertures (8).
Claim 6
Dependent Claim 26 words
In a roll according to claim 1 further including; of the active element head (6) has an axial width which reduces continuously towards the carrier (2).
Claim 7
Dependent Claim 56 words
In a roll according to claim 1 further including; the roll jacket (1) rotatably journalled on a stationary carrier (2) for rotation in a circumferential direction (U) has a direction of rotation (D); and, the cross section sufficient for fluid flow of the passage (5) is enlarged in step-like manner in the direction of rotation (D).
Claim 8
Dependent Claim 25 words
In a roll according to claim 1 further including; the radially outwardly directed surface (9) of the active element head (6) has a rectangular form.
Claim 9
Dependent Claim 42 words
In a roll according to claim 1 further including; the radially outwardly directed surface (9) has a form of a parallelogram, with two side-surfaces extending in the axial direction and two sides extending obliquely to the circumferential direction (U) of the roll.
Claim 10
Dependent Claim 46 words
In a roll according to claim 1 further including; the side-surfaces of the active element heads (6) extending approximately in the circumferential direction (U) of the roll at least almost contact one another in a radially outermost region and are preferably connected via a seal (17).

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1998-10-09 1999-04-10 1999-10-10 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 2002-10-09 2003-04-10 2003-10-10 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 2006-10-09 2007-04-10 2007-10-10 $7700.00 Window Closed / Lapsed

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