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:
Apr. 30, 1985
Filed:
Apr. 10, 1984
Sakae Sano, Tokyo, JP;
Hisashi Kitajima, Tokyo, JP;
Hiroshi Iimori, Yokohama, JP;
Tadashi Nishio, Koganei, JP;
Toa Grout Kogyo Co., Ltd., Tokyo, JP;
Mitsui Toatsu Chemicals, Inc., Tokyo, JP;
Tonan Kaihatsu/Kogyo Co., Ltd., Tokyo, JP;
Abstract
A method for improving the ground or foundation by injecting a grouting agent from the tip end of a hollow injection rod inserted into a boring hole formed in the ground at site so as to infiltrate it into the ground to be solidified. The injection is carried out by varying an injection pressure or injection rate depending on the intensity, particularly, the tensile strength, of the ground so that no vein-like coagulation can be formed around the injection rod, and a columnar or spherical coagulation can be formed.