3m Innovative Properties Company

John B Scheibner

Ke Zhang

Robert M Anderton

David L Buster

Kristine J Williams

Yong Peng Lee

Chee Tat Ee

Juang Meng Mok

Stephen C P Joseph

Alfred Viehbeck

David F Slama

Daniel E Siltberg

Alphonsus V Pocius

Nicholas A Stacey

Guoping Mao

Jameel R Qiblawi

Brent R Hansen

Elaine M Yorkgitis

Brian E Duncan

Nanayakkara L D Somasiri

Ryan D Erickson

Robert S Dodsworth

Hany B Eitouni

Daniel Siltberg

Provided are nozzle assemblies for a spraying apparatus having an outer wall () having opposed inner and outer surfaces, a central aperture () extending through the outer wall, and a pair of auxiliary apertures () disposed on the outer wall (). Each auxiliary aperture is aligned along a respective auxiliary axis () and areas of the inner surface () of the outer wall () adjacent to the auxiliary apertures () are countersunk to define ledges () that are axially symmetric about the auxiliary axes (). These assemblies obviate problems associated with rotatable molding pins and also provide the unexpected advantage of providing axial alignment of the air flow profile as air is emitted from the auxiliary apertures.

Nozzle assembly with auxiliary apertures

Provided are nozzle assemblies and related methods for a spraying apparatus. The nozzle assembly includes a fluid side wall defining a fluid passageway that extends longitudinally along a fluid axis and terminates in a fluid aperture; an air cap side wall extending around the fluid side wall and partially defining an air passageway that terminates in an atomizing aperture adjacent the fluid aperture. A pair of diametrically opposed air horns protrude past the fluid aperture from the air cap side wall and define respective air horn cavities in communication with the air passageway, each air horn having an external surface and a fan control aperture extending along a fan control axis through the external surface to flow air against a fluid stream discharged from the fluid aperture. The fan control aperture has a certain aperture shape defined along a reference plane perpendicular to the fan control axis, and for each air horn, a baffle projects into a volumetric shape defined by extruding the certain aperture shape outwardly along the fan control axis. The baffle modifies the shaping air jets between the fan control apertures and the atomized fluid stream to provide a refined spray pattern.

Nozzle assembly with external baffles

Provided are air caps for liquid spray head assemblies and/or for liquid spray guns. Specifically provided are molded air caps with face geometry inserts. Face geometry inserts provided herein may be effective to provide refined spray patterns. The face geometry inserts are components that are self-aligning in that location, size, and spacing of air and/or liquid openings are designed into in a single piece. The air caps comprise a base member comprising: a base member body, at least one pair of exit air openings, a nozzle tip opening; and a face geometry insert comprising a pair of shaping air apertures and being retained to the base member body.

Air caps with face geometry inserts for liquid spray guns

Described herein are microperforated polymeric films comprising: opposed first and second surfaces separated by a first certain distance (); and a plurality of channels perpendicular to the first and second surfaces, wherein a first opening (-) of a channel intersects the first surface and a second opening (-) of the channel intersects the second surface; wherein the diameter of the first opening is larger than the diameter of the second opening and the second openings on the second surface are spaced apart by a second certain distance (); wherein the ratio of the first certain distance to the second certain distance is at least 0.25; and further wherein the second surface has an open area of at least 10%. Also described are methods of making and using such microperforated polymeric films.

Microperforated polymeric film and methods of making and using the same

A flexible circuit incorporating an electrostatic discharge limiting feature, comprising a dielectric substrate selected from polyimide or liquid crystal polymer film having at least one conductive trace coated on at least one surface of the substrate wherein the discharge limiting feature includes a thin conductive polymer coating selectively applied over a at least a portion of the non-critical region of the circuit, said feature reducing the surface resistivity of the circuit to about 10ohms to about 10ohms and having tribocharging of less than about 50 V.

Flexible circuit with electrostatic damage limiting feature

A flexible circuit incorporating an electrostatic discharge limiting feature, comprising a dielectric substrate selected from polyimide or liquid crystal polymer film having at least one conductive trace coated on at least one surface of the substrate wherein the discharge limiting feature includes a thin conductive polymer coating selectively applied over a at least a portion of the non-critical region of the circuit, said feature reducing the surface resistivity of the circuit to about 10 ohms to about 10 ohms and having tribocharging of less than about 50 V.

A covercoated base substrate, comprising a base substrate and a photoimageable covercoat layer having a lead portion extending beyond at least one, wherein the lead portion has a controlled offset distance from the edge, and a printed circuit made from such base substrate having at least one conductor including a trace and a lead wherein the covercoat has a lead portion covering at least one lead. A base substrate may also have an opening formed therethrough, the opening defining an interior edge wherein the covercoat extends beyond that interior edge.

Printed circuit substrate with controlled placement covercoat layer

A photoimageable, aqueous acid soluble polyimide polymer comprising an anhydride, including a substituted benzophenone nucleus, a diamine reacted with the anhydride to form a photosensitive polymer intermediate, and at least 60 Mole % of solubilizing amine reacted with the photosensitive polymer intermediate to form the photoimageable, aqueous acid soluble polyimide polymer. An emulsion for electrophoretic deposition of a coating of a photoimageable, aqueous acid soluble polyimide polymer comprises a dispersed phase, including the photoimageable aqueous acid soluble polyimide polymer, dissolved in an organic solvent and a dispersion phase including a coalescence promoter and water. The emulsion may be applied, by electrophoretic deposition, to a conductive structure to provide a photoimageable coating on the conductive structure. After exposing the coating to a pattern of radiation for photocrosslinking exposed parts of the photoimageable aqueous acid soluble polyimide polymer, an aqueous acid developer solution removes unexposed photoimageable aqueous acid soluble polyimide polymer to reveal a crosslinked polyimide polymer image of the radiation pattern.

Photoimageable, aqueous acid soluble polyimide polymers

Growing community of inventors

Austin, TX, United States of America

John B Scheibner