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. 19, 2014
Filed:
Aug. 21, 2009
Jiyue Yang, Guangdong, CN;
Hongbin Huang, Guangdong, CN;
Jiyue Yang, Guangdong, CN;
Hongbin Huang, Guangdong, CN;
Guangdon Liansu Technology Industrial Co., Ltd., Foshan, CN;
Abstract
A bottom entry plastic ball valve comprises a valve stem cap (), a valve stem (), a valve stem sealing ring (), a valve stem end surface sealing ring (), a valve ball sealing ring (), a supporting ring () for the valve ball sealing ring, a valve ball (), a connecting pipe (), and a valve body (). A hollow valve ball chamber () is provided inside the valve body (), the valve body () is provided with a valve bottom cover hole () just below the valve ball chamber (), and the width of the valve bottom cover hole () is larger than the diameter of the valve ball (). The ball valve also comprises a valve bottom cover () corresponding to the valve bottom cover hole () so that the valve bottom cover () can cover the valve bottom cover hole () and can be fusion-bonded to the valve body (), thereby avoiding the need for electric fusion welding in the manufacture of large-diameter ball valves.