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:
Feb. 21, 2023
Filed:
May. 10, 2020
Infrastructure Renewal Institute of Southern China, Guangdong, CN;
Welead Infrastructure Engineering Technology (Zhengzhou), Ltd.;
Fuming Wang, Guangdong, CN;
Hongyuan Fang, Guangdong, CN;
Peng Zhao, Henan, CN;
Yanhui Pan, Henan, CN;
Bin Li, Henan, CN;
Hang He, Henan, CN;
Infrastructure Renewal Institute of Southern China, Guangdong, CN;
WELEAD Infrastructure Engineering Technology (Zhengzhou), Ltd., Henan, CN;
Abstract
Trenchless methods for forming a curved hole channel with a steel sleeve and pipeline lifting are provided, including steps of: (T1) drilling a straight hole channel, and inserting the steel sleeve into the straight hole channel; (T2) inserting a guiding pipe into the steel sleeve, and determining a bending direction of a hole channel to be formed; and (T3) inserting a flexible steel-wire pipe into the guiding pipe, and punching to form the curved hole channel. With applying the creative trenchless method for forming the curved hole channel, a specially-made grouting pipe is accurately inserted to a bottom of a subsiding pipeline section, so that a polymer material is conveniently injected to a bottom of a disease position. Though utilizing an expansion force generated by the polymer material, the subsiding pipeline section is uplifted, so as to realize trenchless repairing.