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:
May. 22, 1984
Filed:
Feb. 03, 1982
Nihon Soil Engineering Co., Ltd., Tokyo, JP;
Nihon Sogo-Bosui Co., Ltd., Tokyo, JP;
Yamaguchi Kikai Kogyo Co., Ltd., Tokyo, JP;
Abstract
A grout injection method and apparatus, characterized in that a grout comprised of two liquids and curable when the two liquids are combined are supplied, in a grout injection operation, to an injection pump, introduced through separate passages formed concentrically in the pipe, respectively, into an annular chamber formed within the pipe, and uniformly combined, contacted and mixed with each other in the annular mixing chamber before injection into the soil. The passages of the liquids communicating with the annular mixing chamber are blocked when the grout injection is not carried out.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile