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. 05, 2015
Filed:
Jan. 31, 2014
Aoyama Seisakusho Co., Ltd., Niwa-Gun, JP;
Satoshi Konagaya, Niwa-Gun, JP;
Kenya Yamada, Niwa-Gun, JP;
Sadayoshi Hasegawa, Niwa-Gun, JP;
Satoshi Iida, Niwa-Gun, JP;
Aoyama Seisakusho Co., Ltd., Niwa-Gun, JP;
Abstract
Provided is a nut into which a bolt () including a male-threaded portion with a male-threaded external diameter d and a male-threaded core diameter dis screwed, wherein a bolt insertion side end of a female-threaded portion () formed in a nut body () is provided with an incompletely threaded female portion () that is formed by one to three pitches so that an internal diameter dimension D is larger than (d+d)/2 and is smaller than the male-threaded external diameter d. Accordingly, even when the bolt is screwed into the nut in the inclination direction, the bolt may be rotated about a contact surface with respect to the incompletely threaded female portion (), and hence seizing may be prevented.