A trigger sprayer includes an engine with a piston chamber and an outlet fluid passage, and a piston that slides within the piston chamber and defines an interior bellows chamber. The bellows component is movable in the interior bellows chamber between an uncompressed position in which a fluid volume in the interior bellows chamber is minimized and a compressed position in which the fluid volume is maximized. The trigger sprayer further includes a trigger lever that pivots between a neutral position and an actuated position using a pair of S-shaped trigger springs. Pivotal movement of the trigger lever 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. Relaxation of the bellows component drives fluid from the interior bellows chamber to the outlet fluid passage.

A trigger sprayer includes an engine with a piston chamber and an outlet fluid passage, and a piston that slides within the piston chamber and defines an interior bellows chamber. The bellows component is movable in the interior bellows chamber between an uncompressed position in which a fluid volume in the interior bellows chamber is minimized and a compressed position in which the fluid volume is maximized. The trigger sprayer further includes a trigger lever that pivots between a neutral position and an actuated position using a pair of S-shaped trigger springs. Pivotal movement of the trigger lever 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. Relaxation of the bellows component drives fluid from the interior bellows chamber to the outlet fluid passage.

Operating a hand cleaner dispenser for dispensing a cleaning liquid from a reservoir onto a person's hands in a cycle of operation wherein, during a first time interval during the cycle dispensing the liquid onto the hand as a spray, and during a second time interval during the cycle dispensing the liquid onto the hand as a liquid stream.

The device for packaging and dispensing a product comprises a container provided with at least one variable volume compartment, and a dispensing head fastened to the container. The dispensing head comprises a mounting base, an internal piston that is movable in translation along a displacement axis Y-Y and delimits, inside said base, first and second pumping chambers, and at least one actuating rod that extends through the pumping chambers and the piston and projects from either side of the mounting base. The actuating rod internally delimits a first feed duct in communication with a first outlet orifice of the dispensing head and a second feed duct separate from said first duct and in communication with a second outlet orifice of said head.

Pump systems and methods are disclosed for removing liquid for hand-portable containers. The pump systems include a moveable piston housed in a main chamber and inlet and outlet valves located at one end of the main chamber, where the inlet and outlet valves open and close in response to movement of the piston.

A pump for use with a material sprayer includes a cylinder, a piston, a pump head, first and second check valves, and an elbow connected to the cylinder. The cylinder and the piston are coaxial with a pump axis. The pump head is configured to make a mechanical connection with the reciprocating drive mechanism so as to allow the reciprocating drive mechanism to reciprocate the piston along the pump axis. The elbow includes a first end, a second end, and an inner fluid channel. The first end is configured to make a fluid connection with the hopper. The second end is configured to be fixed with respect to the cylinder. The inner fluid channel extends from the first end to the second end. The pump head and the first end of the elbow are configured to make mechanical and fluid connections with a single linear motion of the pump.

The device for packaging and dispensing a product comprises a container provided with at least one variable volume compartment, and a dispensing head fastened to the container. The dispensing head comprises a mounting base, an internal piston that is movable in translation along a displacement axis Y-Y and delimits, inside said base, first and second pumping chambers, and at least one actuating rod that extends through the pumping chambers and the piston and projects from either side of the mounting base. The actuating rod internally delimits a first feed duct in communication with a first outlet orifice of the dispensing head and a second feed duct separate from said first duct and in communication with a second outlet orifice of said head.

Operating a hand cleaner dispenser for dispensing a cleaning liquid from a reservoir onto a person's hands in a cycle of operation wherein, during a first time interval during the cycle dispensing the liquid onto the hand as a spray, and during a second time interval during the cycle dispensing the liquid onto the hand as a liquid stream.

Operating a hand cleaner dispenser for dispensing a cleaning liquid from a reservoir onto a person's hands in a cycle of operation wherein, during a first time interval during the cycle dispensing the liquid onto the hand as a spray, and during a second time interval during the cycle dispensing the liquid onto the hand as a liquid stream.

A pump for use with a material sprayer includes a cylinder, a piston, a pump head, first and second check valves, and an elbow connected to the cylinder. The cylinder and the piston are coaxial with a pump axis. The pump head is configured to make a mechanical connection with the reciprocating drive mechanism so as to allow the reciprocating drive mechanism to reciprocate the piston along the pump axis. The elbow includes a first end, a second end, and an inner fluid channel. The first end is configured to make a fluid connection with the hopper. The second end is configured to be fixed with respect to the cylinder. The inner fluid channel extends from the first end to the second end. The pump head and the first end of the elbow are configured to make mechanical and fluid connections with a single linear motion of the pump.