Ronald W Sweet

US Patent:

6401287, Jun 11, 2002

Filed:

Nov 18, 1999

Appl. No.:

09/442937

Inventors:

Frank C. Corrado - Rochester NY 14624
James W. Fischer - Rochester NY 14617
Gary R. Larsen - Webster NY 14580
Ronald W. Sweet - Conesus NY 14435

International Classification:

B08B 102

US Classification:

15 3, 15102

Abstract:

A system for cleaning first and second surfaces of a moving web substrate. First and second turret subsystems are disposed sequentially along the web path. Each turret is rotatable about an axis transverse to the direction of web conveyance but there is no axial cross-shaft. Each turret includes at least two contact cleaning rollers spaced apart in the turret on opposite sides of the turret axis. The web path proceeds through each pair of rollers such that in each turret the first roller of the pair is adjacent a first surface of the web and the second roller of the pair is adjacent a second surface of the web. When the turrets are rotated to a null position, none of the rollers is in contact with the web. When the turrets are rotated to a web cleaning position, the web is engaged with the rollers on both sides of the web and follows a serpentine path through the turrets. In a preferred embodiment, each turret is provided with four rollers such that any pair of rollers in either turret may be cleaned at any time without breaking continuity of cleaning of the web surfaces by two rollers on each web surface.

US Patent:

6568326, May 27, 2003

Filed:

May 26, 2000

Appl. No.:

09/579645

Inventors:

Frank C. Corrado - Rochester NY 14624
Gary R. Larsen - Webster NY 14580
Ronald W. Sweet - Conesus NY 14435
James W. Fischer - Rochester NY 14617

International Classification:

B41F 3500

US Classification:

101483, 101423

Abstract:

A system for cleaning a moving substrate includes a rail mounted adjacent to the substrate surface and substantially transverse to the direction of movement thereof. A carriage for supporting a contact cleaning roller (CCR) is deployed on the rail for allowing axial translation of the CCR transversely of the substrate while in rolling contact therewith. Two renewal stations for cleaning the CCR are mounted adjacent the rail, one outboard of each substrate edge. The CCR is at least twice as long as the width of the substrate and is axially oscillable for a distance sufficient that all portions of the CCR surface may be cleaned by the renewal stations during one oscillation cycle of the CCR while the CCR maintains continuous contact with the substrate across the full width thereof. The CCR mounted on the carriage may be a primary CCR and the substrate may be a continuous web or sheet, or the CCR mounted on the carriage may be a secondary CCR and the substrate may be a primary CCR or other process roller.

US Patent:

6708617, Mar 23, 2004

Filed:

Apr 2, 2002

Appl. No.:

10/115199

Inventors:

Frank C. Corrado - Rochester NY 14624
James W. Fischer - Rochester NY 14617
Gary R. Larsen - Webster NY 14580
Ronald W. Sweet - Conesus NY 14435

International Classification:

B41C 100

US Classification:

101483, 101425

Abstract:

A system for cleaning a moving substrate includes a rail mounted adjacent to the substrate surface and substantially transverse to the direction of movement thereof. A carriage for supporting a contact cleaning roller (CCR) is deployed on the rail for allowing axial translation of the CCR transversely of the substrate while in rolling contact therewith. Two renewal stations for cleaning the CCR are mounted adjacent the rail, one outboard of each substrate edge. The CCR is at least twice as long as the width of the substrate and is axially oscillable for a distance sufficient that all portions of the CCR surface may be cleaned by the renewal stations during one oscillation cycle of the CCR while the CCR maintains continuous contact with the substrate across the full width thereof. The CCR mounted on the carriage may be a primary CCR and the substrate may be a continuous web or sheet, or the CCR mounted on the carriage may be a secondary CCR and the substrate may be a primary CCR or other process roller.

US Patent:

7503518, Mar 17, 2009

Filed:

Mar 27, 2007

Appl. No.:

11/691818

Inventors:

Frank C. Corrado - Rochester NY, US
Gary R. Larsen - Webster NY, US
Ronald W. Sweet - Conesus NY, US
James W. Fischer - Rochester NY, US

Assignee:

Seratek, LLC - Rochester NY

International Classification:

B65H 35/08

US Classification:

242526, 242527, 2425274, 2425322

Abstract:

A web-chopping and sheet-winding apparatus comprising an unwinder for unwinding a supply roll of continuous flexible web which may be adhesive on at least one side. A knife roller including at least one fixed transverse knife blade extending from the surface is in nipped relationship with an anvil roller, the height of the knife blade being greater than the thickness of the web. The anvil and knife roller spacing is such that the knife blade extends just to the surface of the anvil roller, thereby chopping the continuous web into sheets as the anvil and knife rollers turn synchronously with the web passing therebetween. A tape core roller in nipped relationship receives the chopped sheets sequentially, the leading edge of each sheet being lifted from the anvil roller by any of a plurality of novel means.

US Patent:

7712698, May 11, 2010

Filed:

Oct 26, 2007

Appl. No.:

11/977758

Inventors:

Frank C. Corrado - Rochester NY, US
Gary R. Larsen - Webster NY, US
Ronald W. Sweet - Conesus NY, US
James W. Fischer - Rochester NY, US

Assignee:

Seratek, LLC - Rochester NY

International Classification:

B65H 35/08

US Classification:

2425261, 2425254, 2425255

Abstract:

An apparatus for forming a wound roll of discrete overlapping sheets of web from a supply of continuous web. The web preferably is passed around a nip roller that steers the web onto the surface of a take-up core. A knife assembly including a knife blade extended from a knife holder is driven by a traversing mechanism across the width of the web to cut the wound web on the core into discrete sheets, the extended height of the knife blade being preferably the exact thickness of the web. In transverse cutting by the knife of the web wound on the take-up core, the knife holder travels on the outer surface of the web, thus assuring that the knife blade extends just to the outer surface of the next inner convolution of web, thereby cutting the continuous web into sheets without damaging previously wound web convolutions.

US Patent:

20040019986, Feb 5, 2004

Filed:

Aug 1, 2002

Appl. No.:

10/210125

Inventors:

Frank Corrado - Rochester NY, US
James Fischer - Rochester NY, US
Gary Larsen - Webster NY, US
Ronald Sweet - Conesus NY, US

International Classification:

B08B001/02

US Classification:

015/003000, 015/102000, 015/104002

Abstract:

A contact cleaning roller which may be axially flexed to conform to a non-planar substrate surface for removing particles therefrom. In a preferred embodiment, a flexible shaft is covered with a high-tack sleeve comprising polyurethane, silicone, adhesive tape, or any other similar high-tack material. The shaft is rotatably suspended at either end in bearings in a frame, allowing the roller to conform to a non-planar substrate surface requiring cleaning, for example, a cathode ray tube screen.

US Patent:

20060272678, Dec 7, 2006

Filed:

Jun 5, 2006

Appl. No.:

11/422236

Inventors:

Frank Corrado - Rochester NY, US
Gary Larsen - Webster NY, US
Ronald Sweet - Conesus NY, US
James Fischer - Rochester NY, US

International Classification:

B08B 1/00

US Classification:

134006000, 015256510

Abstract:

A cleaner assembly for cleaning a roller comprising a tape unwinder and winder for holding and dispensing adhesive tape which may be a continuous strip or may comprises discrete sheets of adhesive tape wound on top of each other. The winder and unwinder are connected to a drive by a timing belt. Thus a length of tape may be wound back and forth on a roller surface by alternating the rotation of the drive. The tape is passed around a backing roller to press the tape against a roller to be cleaned. In a second embodiment, the tape roll comprises a plurality of sheets of tape wound on top of each other. To remove a spent outer sheet, the outer sheet carrying the transferred particles is transferred to a continuous tape roll, exposing a fresh sheet on the sheeted tape roll which is then ready for renewed cleaning service.

US Patent:

20070101885, May 10, 2007

Filed:

Nov 10, 2006

Appl. No.:

11/595519

Inventors:

Frank Corrado - Rochester NY, US
Gary Larsen - Webster NY, US
Ronald Sweet - Conesus NY, US
James Fischer - Rochester NY, US

International Classification:

B41F 35/00

US Classification:

101425000

Abstract:

A CCR system for removing and analyzing particles from a surface of a substrate . A CCR is selectively contactable with the substrate surface. The CCR rolls along the surface, which typically is drawn past the CCR as a continuous moving web on a roller , the CCR being rotatably mounted on an axle of the system. In a first embodiment , the CCR may be removed for off-line analysis of contamination. In a second embodiment , the CCR may remain in operation for real-time analysis of removed contamination. A video camera scans the CCR surface and transmits images or data for visual and/or computer analysis of the contamination, which analysis may include, but is not limited to, computerized shape analysis of particles, areal distribution of particles, and composition of particles.