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:
Oct. 05, 1982
Filed:
Aug. 25, 1980
Koichi Uemura, Sakura-machi, Koganei-shi, Tokyo, JP;
Makoto Uemura, Koganei-shi, Tokyo, JP;
Other;
Abstract
A method and an apparatus for constructing an underground structure by having a plurality of serially adjoining cylindrical bodies propelled underground one after another either in one direction or from opposite directions. A thrusting/pulling jack advancing arrangement, thrusting jack and pulling jack advancing arrangements, connecting and traction members, fixing pieces and fasteners are used in combination to propel each cylindrical body one by one by virtue of a sum total of reaction forces developed at other cylindrical bodies and some additional reaction facility, if necessary.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile