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:
Jul. 27, 2004
Filed:
Dec. 17, 2002
Yukinori Suzuki, Aichi, JP;
Kiyofumi Sakuragawa, Aichi, JP;
Sango Co., Ltd., Aichi, JP;
Abstract
In order to achieve the lightweight, low-cost and high-efficiency design of a spindle apparatus, speed-change device is provided such that slots are formed in one of a spindle and a cam shaft while spiral torque cam grooves are formed in another, and extend around the axis thereof. A torque cam pin is engaged in each slot and its associated torque cam groove, and the position of the spindle relative to the cam shaft in a circumferential direction can be changed by moving the torque cam pins in the axial direction by drive device . Drawing tools are moved in opening and closing directions by changing the position of the spindle relative to the cam shaft in the circumferential direction.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile