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:
Aug. 01, 2000
Filed:
May. 17, 1999
Applicant:
Inventors:
Kwang-Jin Park, Seoul, KR;
Chang-Joon Park, Seoul, KR;
Assignee:
AH-U Co., Ltd., Seoul, KR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16L / ;
U.S. Cl.
CPC ...
138 31 ; 138 30 ;
Abstract
A water hammer arrester constructed with a cylindrical housing having a closed upper end and an internal pressure chamber. A piston slidably installed within the housing to receive a reaction force medium such as gaseous nitrogen, provides a space that communicates with an integral pressure chamber within the closed upper end of the housing. A threaded connector bearing a nipple circumscribed with a plurality of circumferential grooves is crimped into the neck of the lower end of the housing.