3m Innovative Properties Company

Minnesota Mining and Manufacturing Company

Other

David C Roeker

Richard M Pihl

David E Johnson

Edward L Manor

David F Slama

Lawrence J Mann

Scott M Mevissen

John Telischak, Jr

Jerome M Fried

Keith C Navis

Stephen C P Joseph

William F Sheffield

Ronald L Ott

Michael Sean Bates

Robert M Petrie

Frederick A Magadanz

Shawn P Crosby

Donna C Rockette

Donna Wendeln Bange

Dean S Holmes

Yvonne I Lund

Mara E Liepa

Edwin A Goralski

Joseph G Pribyl

Richard Ionta

An assembly for feeding liquid to the inlet port of a gravity feed sprayer. The assembly includes (1) a mixing cup of a known type commonly used to mix paint with solvent that is of stiff polymeric material and bears indicia on its side wall indicating the levels to which a plurality of different liquids should be sequentially poured into the cup to achieve a predetermined ratio between the liquids; (2) a first adapter comprising a central portion having a through opening and a transverse portion including a peripheral part defining a groove along its inner surface adapted for sealing engagement with a top end of the mixing cup; and (3) a second adapter having a through opening, a first end portion of which second adapter is adapted to releasably engage the inlet port of a gravity feed paint sprayer. A second end portion of the second adapter and the central portion of the first adapter have connector parts adapted for releasable liquid tight engagement between the adapters with their through openings in communication.

Mixing cup adapting assembly

An abrasive article backup plate assembly and grinder system having an abrasive article backup plate assembly is disclosed. The abrasive article backup plate assembly includes an abrasive article having an abrasive surface that includes a viewing window within the abrasive surface. A support member is provided including a first major surface which supports the abrasive article. At least a portion of the support member is made of materials sufficiently clear to collectively see through the support member and the viewing window. A method of abrading a surface using a grinder system including the abrasive article backup plate assembly is also disclosed.

Buckup plate assembly for grinding system

An assembly for feeding liquid to the inlet port of a gravity feed sprayer. The assembly includes (1) a mixing cup of a known type commonly used to mix paint with solvent that is of stiff polymeric material and bears indicia on its side wall indicating the levels to which a plurality of different liquids should be sequentially poured into the cup to achieve a predetermined ratio between the liquids; (2) a first adapter comprising a central portion having a through opening and a transverse portion including a peripheral part defining a groove along its inner surface adapted for sealing engagement.with a top end of the mixing cup; and (3) a second adapter having a through opening, a first end portion of which second adapter is adapted to releasably engage the inlet port of a gravity feed paint sprayer. A second end portion of the second adapter and the central portion of the first adapter have connector parts adapted for releasable liquid tight engagement between the adapters with their through openings in communication.

A dispenser and method for attaching abrasive sheets to a backup pad. The dispenser conveniently centers on the backup pad an abrasive sheet that is larger than the backup pad. In a preferred embodiment, the dispenser comprises: a holder configured to receive circular abrasive sheets, the holder including a bottom, a top, front portion and a rear portion, wherein the rear portion extends farther from the bottom than the front portion, and wherein the bottom of the holder defines at least a 180 degree arc of a first circle having a first radius; a slider guide extending along the rear of the holder; and a spacer mounted in the guide, wherein the spacer is movable along the guide from a first position within the front portion of the holder to a second position beyond the front portion of the holder, the spacer defining an arc of no more than 180 degrees of a second circle having a second radius smaller than the first radius.

Abrasive sheet dispenser and method of use

A container for a stack of sheets (e.g., abrasive coated discs) including a base portion adapted to extend transversely across a bottom surface of the stack of sheets and having opposite ends adapted to be positioned at spaced locations along a side surface of the stack of sheets; and a plurality of stiff elongate retaining portions having proximal portions attached to the base portion at its opposite ends with the retaining portions at spaced locations around the side surface of the stack of sheets. The retaining portions have central parts adapted to extend along the side surface of the stack of sheets from its bottom surface to its top surface at those spaced locations, and have distal parts adapted to extend above the top surface of the stack of sheets. Those retaining portions are positioned or bendable to position the distal part in contact with the top surface of the stack of sheets, and have a shape or retain a shape to which the retaining portions are bent to retain the stack of sheets in the container.

Container for stacked sheets

A back-up pad for pad for supporting an abrasive article. A preferred embodiment of the invention provides a back-up pad having a dust collection groove, in which the engagement component for securing the abrasive article is attached to the dust collection groove surface. The present invention also provides a method for forming a back-up pad with a dust collection groove.

Back-up pad for abrasive articles and method of making

A molded abrasive brush having a backing with a plurality of bristles extending therefrom. The backing and bristles are preferably integrally molded. The brush is molded from a moldable polymer such a thermoset polymer, thermoplastic polymer, or thermoplastic elastomer. The moldable polymer includes a plurality of organic or inorganic abrasive particles interspersed throughout at least the bristles, and can be interspersed throughout the brush. The moldable brush can include an attaching means molded integrally with the backing. Also disclosed is a method of making a molded abrasive brush and a method of refining a workpiece surface with a molded abrasive brush.

Molded abrasive brush

A dispenser and method for attaching abrasive sheets to a backup pad. The dispenser conveniently centers on the backup pad an abrasive sheet that is larger than the backup pad. In a preferred embodiment, the dispenser comprises: a holder configured to receive circular abrasive sheets, the holder including a bottom, a top, front portion and a rear portion, wherein the rear portion extends farther from the bottom than the front portion, and wherein the bottom of the holder defines at least a 180 degree arc of a first circle having a first radius; a slider guide extending along the rear of the holder; and a spacer mounted in the guide, wherein the spacer is movable along the guide from a first position within the front portion of the holder to a second position beyond the front position of the holder, the spacer defining an arc of no more than 180 degrees of a second circle having a second radius smaller than the first radius.

Abrasive sheet dispenser

A back-up pad for pad for supporting an abrasive article. A preferred embodiment of the invention provides a back-up pad having a dust collection groove, in which the engagement component for securing the abrasive article is attached to the dust collection groove surface. The present invention also provides a method for forming a back-up pad with a dust collection groove

Center portion of a brush

Dispenser for abrasive sheets

A rotary surface treatment tool is attached to a rotational driver with a kit. The surface treatment tool includes a base with a middle portion around a center hole, and one or more attachment knobs are placed on the front side of the middle portion. An attachment plate or retainer nut has a flange which extends radially over the middle portion of the base. The attachment knobs mate with holes in the flange of the retainer nut. The surface treatment tool is tightened onto the shaft by turning the surface treatment tool, with the attachment knob turning the retainer nut and thereby tightening the retainer nut to the threaded shaft. Assembly and tightening without any tools is thus facilitated. The base may be made of a flexible, shape-retaining material, and recesses are provided behind the attachment knobs to permit use with a retainer nut without a mating recess. The surface treatment tool may be a brush having bristles which extend at about 90.degree. to the plane of the base. The bristles are disposed in a pattern of helical bristle curves, with each bristle curve providing a relatively continuous sweep.

Growing community of inventors

Hudson, WI, United States of America

David C Roeker