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. 29, 1984
Filed:
Aug. 25, 1982
Hiromichi Yamashita, Tokyo, JP;
Yoshiharu Watari, Yokohama, JP;
Hideaki Mutsuro, Fukuoka, JP;
Kenji Takagi, Funabashi, JP;
Teijin Limited, Osaka, JP;
Penta-Ocean Construction Co., Ltd., Osaka, JP;
Abstract
Soft ground is improved by a sand drain method wherein a casing pipe is inserted in the soft ground followed by insertion of a cylindrical bag composed of a water-permeable material into the casing pipe; sand is filled in the cylindrical bag and then only the casing pipe is drawn out from the soft ground whereby a sand drain is constructed in the soft ground; and then, a load is imposed on the sand drain-constructed region to remove water through the sand drain and consolidate the soft ground. The diameter of at least a part of the cylindrical bag is capable of being increased when the consolidation load is imposed on the sand drain-constructed region.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile