Aoyama Seisakusho Co., Ltd.
|Aoyama Seisakusho Co., Ltd. Patent applications|
|Patent application number||Title||Published|
|20120011969||FASTENING TOOL - The invention provides a fastening method and a fastening tool which can stably fasten a nut to a bolt securely and with a small dispersion at a desired axial force. A fastened member is fastened by inserting a bolt to the fastened member, thereafter temporarily fastening a nut and the bolt, pulling a leading end of a shaft portion of the bolt in an axial direction of the bolt, rotating the nut so as to screw into the bolt while elastically deforming the bolt so as to generate an axial force, and thereafter canceling the pulling of the bolt.||01-19-2012|
|20110318136||FEMALE SCREW COMPONENT AND FASTENING COMPONENT UTILIZING THE SAME - A female thread member capable of preventing seizing caused by inclined insertion, and being smoothly fastened from any directions in which a bolt is inserted, and a fastening member using the female thread member. A non-thread portion is formed on an inner peripheral surface of a female thread member body having a female thread for a length corresponding to at least one pitch from an end surface on a bolt-inserting side, and a projection which comes into contact with a flank surface of a male thread of an inserted bolt is formed on a line extending from a helical line of the female thread. The female thread member is used in combination with the bolt having no incomplete thread portion, and there is no adverse possibility of seizing regardless of any directions in which the bolt is inserted.||12-29-2011|
|20110200410||ANTI CROSS-THREAD BOLT - To provide an anti cross-thread bolt which prevents itself from being cross-threaded without the need for correcting its posture by a pilot portion. The bolt is screwed into a female screw having a nominal diameter D and an inner diameter D||08-18-2011|
|20090067921||FASTENING DEVICE - A fastening device, including: a sleeve||03-12-2009|
|20090060676||BOLT - In a bolt of the present invention, a guide portion (||03-05-2009|
Patent applications by Aoyama Seisakusho Co., Ltd.