Graco Minnesota Inc.

Mark E Ulrich

Mark C Richter

Amelia J Stech

Elisa J McCline

Jason J Willoughby

Diane Leigh Olson

Robert W Kinne

Stanley G Karwoski

Richard D Anderson

David Gregory Gonska

Joseph A Daniski

Adriana Fitzgerald Mickols

Arnold W Braun, Jr

Tamara M Bentley

Michael J Reget

David J Cliff

David W Koehne

Masoud Amin-Javaheri

Roger E Wiersma

David C Mandeville

John C Sweazey

A fluid sprayer includes a pump and an electrostatic module configured to provide an electrostatic charge to spray fluid. The electrostatic module is electrically connected to a conductive component of the fluid sprayer, such as a fluid displacement member, fitting, cylinder, or spray tip, to charge the spray fluid via the conductive component. The fluid is electrostatically charged prior to exiting the fluid sprayer.

Electrostatic handheld sprayer

Electrostatic spray probe

Electrostatic spray gun

Transparently-wrapped electrostatic sprayer fluid tube

An alternator, such as for use in an electrostatic spray gun, comprises an electromagnetic alternator, a housing and an impeller. The electromagnetic alternator has a shaft. The electromagnetic alternator is disposed within the housing. The housing has an air aperture. The impeller is mounted to the shaft within the housing so as to be aligned with the air aperture. The impeller includes blades having curved leading and trailing edges. In one embodiment, each blade has a curvature so as to be perpendicular to the air aperture across an entire arc over which each impeller blade has a line of sight of the air aperture.

Impeller for electrostatic spray gun

In one example, an electrostatic spray gun includes a spray tip assembly, an alternator, an electrode, and at least one controller. The alternator includes a stator having an inner diameter and an outer diameter. The alternator further includes a rotor disposed within the inner diameter of the stator and configured to rotate within the stator to cause the alternator to generate alternating electrical current. The electrode, positioned proximate the spray tip assembly, is coupled to receive electrical energy from the alternator. The at least one controller is coupled to the alternator and is configured to output a representation of a rotational speed of the rotor.

Alternator indicator for electrostatic spray gun

An alternator, such as for use in an electrostatic spray gun, comprises an alternator housing, a stator, a rotor, a shaft, a first bearing and a sheath. The stator is inserted into the alternator housing and has an inner diameter and an outer diameter. The rotor is disposed within the inner diameter of the stator. The shaft extends from the rotor and is rotatably supported by a first bearing. The sheath surrounds the outer diameter, supports the stator with respect to the alternator housing, and supports the bearing.

Alternator for electrostatic spray gun

Automatic electrostatic gun

Interlocking tabs are provided on the backside of a spray gun air cap to mate with corresponding slots in the barrel of the gun. The tabs and slots are spaced at 90&#xb0; (or other spacing if desired) to confine the air cap to vertical or horizontal orientations. The barrel and retaining ring are provided with a custom coarse thread which both allows quicker removal and replacement of the air cap as well as substantially eliminating the ability to cross-thread the air cap on the barrel.

Spray gun having indexing air cap with quick release retaining ring

The apparatus is designed to dispense sealants and adhesives onto a workpiece in a robotic or manual application. The apparatus has a motor, a through shaft and a rotating shaft. The rotating shaft is hollow and has an off-center aperture at the end thereof through which extends one end of the through shaft. By rotating the rotating shaft, the end of the through shaft has imparted to it an orbital motion which is capable of providing a swirl type pattern onto the workpiece.

Pattern controllable dispensing apparatus

Growing community of inventors

Oak Grove, MN, United States of America

Mark E Ulrich