US 12,005,466 B2
Fluid sprayer and components of a fluid sprayer
Christopher C. Wagner, Saint Anthony, MN (US); and Mark C. Richter, River Falls, WI (US)
Assigned to Graco Minnesota Inc., Minneapolis, MN (US)
Filed by Graco Minnesota Inc., Minneapolis, MN (US)
Filed on Jun. 15, 2021, as Appl. No. 17/348,345.
Claims priority of provisional application 63/188,817, filed on May 14, 2021.
Claims priority of provisional application 63/178,683, filed on Apr. 23, 2021.
Claims priority of provisional application 63/041,454, filed on Jun. 19, 2020.
Prior Publication US 2021/0394208 A1, Dec. 23, 2021
Int. Cl. B05B 7/04 (2006.01); B05B 7/12 (2006.01); B05B 9/01 (2006.01); B05B 12/00 (2018.01)
CPC B05B 7/0458 (2013.01) [B05B 7/1218 (2013.01); B05B 9/01 (2013.01); B05B 12/0026 (2018.08)] 19 Claims
OG exemplary drawing
 
1. A spray gun configured to receive flows of a fluid and of air and to emit a fluid spray and the air, the spray gun comprising:
a gun body having a first bore, a second bore, and a gap disposed between the first bore and the second bore, the first bore and the second bore disposed coaxially on an axis;
a spray fluid control cartridge having a first housing disposed within the first bore, wherein a spray fluid control valve is fully contained within the first housing and is configured to control spraying of spray fluid from the spray gun, wherein a fluid valve member of the spray fluid control valve extends out of the first housing and towards the second bore;
an air control cartridge having a second housing disposed within the second bore, wherein a first valve member is at least partially contained within the second housing, the first valve member configured to control airflow for spraying by the spray gun, wherein a receiving chamber is formed in the first valve member; and
a trigger extending into the gap and configured to actuate the spray fluid control valve between a closed state and an open state;
wherein a valve stem of the fluid valve member extends into the receiving chamber of the first valve member such that a projection extending radially from the valve stem of the fluid valve member is disposed within the receiving chamber;
wherein the projection is spaced from an opening of the receiving chamber by a first axial gap, the valve stem of the fluid valve member extending into the receiving chamber through the opening; and
wherein the trigger is configured to engage the first valve member to shift the first valve member to a first air valve open state prior to engaging the projection to exert a driving force on the projection of the valve stem of the fluid valve member to shift the spray fluid control valve to the open state.