US 11,986,850 B2
Handheld airless sprayer for paints and other coatings
James C. Schroeder, Ramsey, MN (US); Aaron R. Laho, Big Lake, MN (US); Steve J. Wrobel, Rogers, MN (US); and Joshua D. Roden, Blaine, MN (US)
Appl. No. 17/046,484
Filed by Graco Minnesota Inc., Minneapolis, MN (US)
PCT Filed Apr. 9, 2019, PCT No. PCT/US2019/026503
§ 371(c)(1), (2) Date Oct. 9, 2020,
PCT Pub. No. WO2019/199760, PCT Pub. Date Oct. 17, 2019.
Claims priority of provisional application 62/655,700, filed on Apr. 10, 2018.
Prior Publication US 2021/0154691 A1, May 27, 2021
Int. Cl. B05B 9/08 (2006.01); B05B 12/00 (2018.01); B05B 12/34 (2018.01); B05B 13/00 (2006.01); B05B 15/62 (2018.01); E01C 23/22 (2006.01); F04B 1/146 (2020.01); F04B 15/02 (2006.01); F04B 17/03 (2006.01); F04B 17/06 (2006.01); F04B 23/02 (2006.01)
CPC B05B 9/0861 (2013.01) [B05B 12/002 (2013.01); B05B 12/34 (2018.02); B05B 13/005 (2013.01); B05B 15/62 (2018.02); E01C 23/22 (2013.01); F04B 1/146 (2013.01); F04B 15/02 (2013.01); F04B 17/03 (2013.01); F04B 17/06 (2013.01); F04B 23/025 (2013.01)] 22 Claims
OG exemplary drawing
 
1. A handheld sprayer comprising:
a fluid module comprising a fluid reservoir and a pump that includes a piston that is configured to reciprocate on an axis to pump fluid from the fluid reservoir for spraying; and
a drive module comprising a motor, a handle, and a trigger, the drive module removably connected to the fluid module by a static connection and a dynamic connection, the static connection fixing the fluid module to the drive module, the drive module powering the pump of the fluid module by mechanical motion conveyed from the drive module to the fluid module through the dynamic connection;
wherein the dynamic connection is formed by a receiver interfacing with a drive connector at a dynamic interface, the receiver including a socket that moves with the receiver;
wherein the receiver and the drive connector are configured to move during reciprocation of the piston;
wherein the receiver is on one of the fluid module and the drive module and the drive connector is formed on the other one of the fluid module and the drive module;
wherein the drive connector is disposed in the socket of the receiver when the drive module is in a connected state with the fluid module, and the drive connector is removed from the socket of the receiver when the drive module is in a disconnected state with respect to the fluid module; and
wherein the dynamic interface is configured to drive the piston through a pump stroke by a driving force exerted at the dynamic interface along the axis and within the socket, the driving force displacing the piston through the pump stroke.