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:
Oct. 09, 2018
Filed:
Jan. 13, 2015
Jacobs Chuck Manufacturing (Suzhou) Co., Ltd., Suzhou, CN;
Daijiro Nakamura, Kobe, JP;
Jacobs Chuck Manufacturing (Suzhou) Co., Ltd., Suzhou, CN;
Abstract
[Problem] A chuck device capable of reliable locking with a simple structure is provided. [Solution] A chuck device () including a plurality of balls (); a retainer () which holds the balls () so as to be rolled; a spring ring () configured to rotate together with a nut ring () and to switch between a rotation restricted state in which the retainer () is restricted in a loosening direction (L) and a restriction released state in which the restriction of the retainer () in the loosening direction (L) is released; and a one-way spring () which restricts the retainer () in the loosening direction (L) relative to a chuck body (), in which the plurality of balls (), the retainer () and the one-way spring () configure a one-way bearing mechanism () restricted in the loosening direction (L) provided between the nut ring () and the chuck body (), and the retainer () in the rotation restricted state configures a bearing and lock mechanism ().