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:
Sep. 01, 2026
Filed:
Jul. 21, 2022
Yonwoo Co., Ltd., Incheon, KR;
Seong Ung Choe, Incheon, KR;
YONWOO CO., LTD., Incheon, KR;
Abstract
A pump assembly is provided according to an embodiment of the present invention. The pump assembly may comprise: a cylinder having a suction port formed through the lower end thereof; a piston ascended and descended inside the cylinder and having an inlet formed through one side thereof; a seal cap ascended and descended inside the cylinder, in a state of coming into close contact with the inner wall of the cylinder, to open and close the inlet; a stem coupled to the piston in such a way as to be ascended and descended together with the piston and having an outlet formed on top thereof; a cylinder cap coupled to the upper side of the cylinder to surround the stem; a first elastic member disposed between the seal cap and the stem inside the cylinder; and a second elastic member disposed between the cylinder cap and the stem outside the cylinder.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile