Graco Minnesota Inc.

Christopher J Pellin

Joseph E Tix

Mark T Weinberger

Jeffrey N Velgersdyk

Samuel R Stewart

Daniel P Ross

Justin J Weldon

Richard D Anderson

Michael J Sebion

Peter L Linder

Douglas P Zittel

Douglas S Ryder

Mark C Richter

Jack A Bosak

Jacob R Whiteoak

Roman S Kopylov

Joshua D Roden

John Russell Ingebrand

Kyle A Bottke

Andrew M Spiess

Bryan K Colby

Jeromy D Horning

Ralph Carl Angiuli

Erich W Beckmann

John R Scopelite

Kevin M Raines

Jacob T Elmer

Jeremy R Plough

Daniel J Chase

Tyler A Salminen

Evan M Gutshall

Mark C Richler

Jared D Blaisdell

Douglas Zittel

Spray gun

A fluid cartridge for a plural component sprayer is configured to receive first and second component materials and purge air from the sprayer and provide the first and second component materials and purge air to a mix chamber for spraying. The fluid cartridge includes a cartridge body, material flowpaths extending from a second end to a cartridge bore, and a purge path extending from the second end to the cartridge bore. Fluid checks are disposed in the material flowpaths and purge path to prevent backflow out of the fluid cartridge. Side seals are disposed in the material paths and are pre-loaded to extend into the cartridge bore and engage a mix chamber within the cartridge bore.

Fluid cartridge for a plural component sprayer

Cartridge

Shuttle

Yoke

A mix chamber for a plural component sprayer is configured to receive first and second component materials and emit a spray of a resulting plural component material. The mix chamber includes a chamber body extending between a first end and a second end and including flat lateral sides. A ramp feature is disposed proximate the first end and is configured to contact and push first and second side seals, respectively, away from a body axis as the mix chamber shifts in a first direction through a cartridge bore to increase a gap between the first side seal and the second side seal such that the first side seal engages the first flat lateral side and the second side seal engages the second flat lateral side.

Mix chamber for a plural component sprayer

A fast-set, plural component, spray applicator () includes a stationary mix chamber () to eliminate dynamic metal-to-metal high pressure fluid sealing. The stationary mix chamber () mixes the plural components before dispensing the mixed components from the spray applicator (). The spray applicator includes fluid needles () configured to engage and disengage seals to perform the fluid valving. Needles () control both fluid and air flow to the stationary mix chamber ().

Spray applicator with a stationary mix chamber

Control needle

Component mixing chamber

A pump having significantly minimized or no ullage for pumping material (fluid or aggregate).

Pump piston

Growing community of inventors

Burnsville, MN, United States of America

Christopher J Pellin