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:
Nov. 20, 1990
Filed:
Jan. 27, 1989
Jung H Oh, Shinsu-Dong, Mapo-Ku, Seoul, KR;
Other;
Abstract
A fastening bolt set is disclosed which is used for attaching an object to a structure, and which comprises an ordinary bolt with a hexagonal or circular head, an internal washer having a long shape and having an annular projection, an external washer having an annular projection, and an ordinary nut for final tightening, all of the above components being connected by a string. This device is used where the back side of the structure is unreachable by hand or by means of a tool, and the working method is such that the bolt and the internal washer are sequentially inserted through the fastening hole, and the string connected to the bolt and the washer is pulled out of the fastening hole. Then the head of the bolt and the internal washer are combined together, the body of the bolt is passed through the fastening hole, and the head of the bolt and the internal washer are halted at the back side of the fastening hole. Then the external washer and the nut are put to the outwardly extended bolt body to finish the fastening by tightening the nut.