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:
Jan. 11, 2011
Filed:
Jun. 13, 2005
Yoshihiro Murase, Motosu, JP;
Tetsuya Oosawa, Komaki, JP;
Mitsuru Kozawa, Kounan, JP;
Sadayoshi Hasegawa, Inazawa, JP;
Yoshihiro Murase, Motosu, JP;
Tetsuya Oosawa, Komaki, JP;
Mitsuru Kozawa, Kounan, JP;
Sadayoshi Hasegawa, Inazawa, JP;
Aoyama Seisakusho Co., Ltd., Nagoya-Shi, JP;
Abstract
In a bolt of the present invention, a guide portion having a small diameter is formed at the distal end of a shaft portion and ridge having an inverted direction screw configuration relative to the ridge formed on a constant diameter portion is formed. When the bolt is inserted obliquely into a nut and the ridge gets into engagement with a female screw portion of the nut, an effect of floating the bolt is generated, and the bolt cannot be driven into the nut unless it is set in an appropriate tightening posture. Consequently, biting and seizing of the bolt to the nut can be prevented securely. If the ridge is formed into a double threaded screw having an inverted direction screw configuration, the effect can be further intensified.