The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 10, 2022
Filed:
Sep. 05, 2019
Canyon Corporation, Tokyo, JP;
Mitsuaki Shazuki, Onoda, JP;
CANYON CORPORATION, Tokyo, JP;
Abstract
[Object] To provide a trigger-type pump dispenser that makes it possible to prevent an out-of-nozzle squirting phenomenon that occurs at a final stage of sucking up of liquid out of a vessel into a cylinder. [Solution] A trigger-type pump dispenser A includes a handle structurea nozzle base structureattached to the handle structurea triggera cylinder structurea capby which the cylinder structureis held down and attached to the mouth of a vessel, a piston structurethat slides inside the cylinder structurean inverted-mortar-shaped lipformed in the piston structurea springthat springs the piston structurea valve caseattached to the nozzle base structurea mortar-shaped valve seatformed in the valve casea leak valveattached to a bottom part of the cylinder structurethat has a bulging portionat a tip thereof, a first valve FV, and a second valve SV. A movement of the piston structurefrom top dead center to bottom dead center causes liquid in the cylinder structureto be discharged from a nozzle orifice N. The bulging portionat the tip of the leak valveis disposed to pass through the inverted-mortar-shaped lipA through-hole diameter Dof the mortar-shaped valve seatof the valve caseis smaller than a nozzle orifice diameter D