US 11,701,676 B2
Trigger sprayer assembly with dual action piston
Brandon Donnelly, New York, NY (US); and Milan-Bob Patadlas, Talisay (PH)
Assigned to Market Ready, Inc., Round Lake Park, IL (US); and Cupcake LLC, New York, NY (US)
Filed by Market Ready, Inc., Round Lake Park, IL (US); and Cupcake LLC, New York, NY (US)
Filed on Jun. 15, 2022, as Appl. No. 17/841,312.
Claims priority of provisional application 63/212,972, filed on Jun. 21, 2021.
Prior Publication US 2022/0401984 A1, Dec. 22, 2022
Int. Cl. B05B 11/10 (2023.01)
CPC B05B 11/1088 (2023.01) [B05B 11/103 (2023.01); B05B 11/1011 (2023.01); B05B 11/1035 (2023.01)] 20 Claims
OG exemplary drawing
 
1. A trigger sprayer assembly for dispensing a fluid, comprising:
an engine comprising a piston chamber and an outlet fluid passage that is fluidly coupled to the piston chamber;
a piston that is slidably disposed within the piston chamber, the piston defining an interior bellows chamber;
a bellows component disposed within the interior bellows chamber, the bellows component movable between an uncompressed position in which an available fluid volume in the interior bellows chamber is minimized and a compressed position in which the available fluid volume in the interior bellows chamber is maximized;
a trigger lever coupled to the engine and the piston using a pair of S-shaped trigger springs, the trigger lever configured to pivot between a neutral position and an actuated position;
wherein pivotal movement of the trigger lever from the neutral position to the actuated position pushes the piston vertically in the piston chamber to drive fluid from the piston chamber into the interior bellows chamber and move the bellows component from the uncompressed position to the compressed position; and
wherein relaxation of the bellows component from the compressed position to the uncompressed position drives fluid from the interior bellows chamber to the outlet fluid passage.