EP1281443A2 — Pump dispenser and spraying apparatus provided with the same

USPTO Abstract

The objective of this invention is to provide a pump dispenser (A) transmitting precisely the trigger motion and enabling stable operation of the piston section (3). As a means to achieve this objective, a manual operative pump dispenser (A) mounted on a vessel (B) wherein the liquid contained in the cylinder section (21) is compressed with the piston section (3) by the displacement of a trigger structure (1) and is ejected through the nozzle orifice (11C), including a base body (2) fixed on the vessel orifice via a packing structure (4), a cylinder section (21) and a vent cylinder section (22) formed in adjacent to each other on the base body (2), and a trigger structure (1) including a trigger section (12), a second valve casing section (11) mounted on the base body (2), and a trigger guide section (13) oscillating in the vent cylinder section (22) is provided.