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. 04, 1999
Filed:
Nov. 14, 1996
Takeo Fujiyama, Tokyo, JP;
Takuya Yokote, Tokyo, JP;
The Max Co., Ltd., Tokyo, JP;
Abstract
A screw tightener using coupled screws comprises: a screw tightener body including a driver bit; a nose portion movable in the axial direction of the driver bit; a spring usually urging the nose portion to move forward from the screw tightener body; a feed wheel rotatably supported by the nose portion, wherein coupled screws supplied to the nose portion are fed in the direction of extension of the driver bit by interlocking the rotation of the feed wheel with the movement of the nose portion to be forced into the screw tightener body; retaining members for mutually retaining the screw tightener body and the nose portion when the indentation force is released after the nose portion is moved to be forced partway into the screw tightener body; and guide groove for preventing the retaining members from retaining when the nose portion is caused by the spring to undergo a reset movement with respect to the screw tightener body after the nose portion is moved to be forced into the screw tightener body by a predetermined movement.