Graco Minnesota Inc.

Christopher C Hines

Diane Leigh Olson

Robert W Kinne

Pamela J Muetzel

Andrew J Ericson

Sophia E Drayna

Brian W Koehn

Adam K Collins

Bradley H Hines

August F Legatt

Bradley J Hines

Spray gun system

A fluid sprayer includes a spray gun that is configured to output a spray of fluid for application on a substrate. A trigger of the spray gun is operatively connected to a controller to control actuation of a pump that drives the spray fluid to the spray gun. A solenoid is connected to a spray valve of the spray gun to actuate the spray valve open to cause spraying by the fluid sprayer.

Fluid sprayer

Pump module

Spray gun

Modular mechanically driven diaphragm pump features are presented herein. Such a diaphragm pump can include a motor, a drive mechanism, and a coupling mounted on a wheeled frame. A diaphragm pump can be mounted to the coupling by forming mechanical static and dynamic connections to brace a housing of the diaphragm pump relative to a drive rod which is moved by the drive mechanism to operate the pump. These mechanical static and dynamic connections can be broken to dismount the pump for replacement or servicing. In some cases, a gas charge can be introduced on the non-working fluid side of the diaphragm to boost performance and/or a dampener can be integrated into the housing of the diaphragm pump and mounted/dismounted with the diaphragm pump.

Mechanically driven modular diaphragm pump

A pump draws fluid from a reservoir and drives the fluid downstream to a spray tip where the fluid is applied to a surface. The pump includes a polymer pump body and a metallic piston configured to reciprocate relative to and within the polymer pump body. The metallic piston interfaces with an inner cylinder formed within the polymer pump body and pumps fluid through the polymer pump body to a spray nozzle downstream of the inner cylinder.

Handheld sanitary fluid sprayer having resilient polymer pump cylinder

Airless paint sprayer

Growing community of inventors

Andover, MN, United States of America

Christopher C Hines