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:
Jun. 12, 2012
Filed:
Sep. 05, 2006
Toru Harada, Fujisawa, JP;
Yoshinori Jingu, Fujisawa, JP;
Tomofumi Yamashita, Fujisawa, JP;
Shingo Saitou, Fujisawa, JP;
Toru Harada, Fujisawa, JP;
Yoshinori Jingu, Fujisawa, JP;
Tomofumi Yamashita, Fujisawa, JP;
Shingo Saitou, Fujisawa, JP;
NSK Ltd., Tokyo, JP;
Abstract
Since it is configured that an female screw grooveof a nutextends round an axis of the nutthrough 360 degrees or less and a sectional shape thereof taken at right angles to the groove contains a circular arc portionof 90 degrees or less and a rectilinear portionwhich connects to the circular arc portion at a bottom of the groove and extends in parallel with the axis, after molding, a lower mold LM and an upper mold UM can simply be removed from a barrel mold BM in the axial direction, and consequently, the necessity of provision of a parting plane which passes through the thread groovecan be obviated, thereby making it possible to easily form the thread groovewhich is free from a difference in level or a stepped portion.