Patent · US Active

Bridge type concentric continuously adjustable water distributor

US9828831B2 · kind B2 · utility

0Cited by

2References

9Claims

0Family size

Assignee

PetroChina Company Limited · CN

Inventors

He Liu · Beijing, CN
Xiaohan Pei · Beijing, CN
Fuchao Sun · Beijing, CN
Lichen Zheng · Beijing, CN
Qinghai Yang · Ichikawa, JP
Yang Gao · Hangzhou City, CN

Key dates

Filing date	Jun 6, 2013
Grant date	Nov 28, 2017
Priority date	—
Expiry date	Feb 20, 2034

Classification

Technology area (CPC E)Fixed Constructions
CPC primaryE21B2200/06
WIPO fieldCivil engineering
WIPO sectorOther fields

Abstract

A bridge concentric continuously adjustable water regulator comprising: an outer tube; an adjusting sleeve disposed in the outer tube; a concentric valve connected below the adjusting sleeve, with a center of circle of the concentric valve being concentric to the outer tube; a water outlet which runs through a side wall of the outer tube and is connected to the concentric valve; a lower sealed section which is disposed in the outer tube and is below the concentric valve and the water outlet; and a bridge passage disposed in the side wall of the outer tube and outside the concentric valve and the lower sealed section.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.