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. 16, 2006
Filed:
Jun. 09, 2004
Shuuji Hayashida, Kawasaki, JP;
Yuji Fujikawa, Kawasaki, JP;
Yuichi Ichikawa, Kawasaki, JP;
Osamu Saito, Kawasaki, JP;
Nobuyuki Hayashi, Kawasaki, JP;
Takahiro Nakamura, Kure, JP;
Yuuzou Hashimoto, Kure, JP;
Tomio Omori, Kure, JP;
Shuuji Hayashida, Kawasaki, JP;
Yuji Fujikawa, Kawasaki, JP;
Yuichi Ichikawa, Kawasaki, JP;
Osamu Saito, Kawasaki, JP;
Nobuyuki Hayashi, Kawasaki, JP;
Takahiro Nakamura, Kure, JP;
Yuuzou Hashimoto, Kure, JP;
Tomio Omori, Kure, JP;
Mitutoyo Corporation, Kawasaki, JP;
Abstract
A measuring instrument that includes a tubehaving a female threadand a spindlehaving a lead screwscrewing with the female threadand capable of being advanced and retracted in an axial direction along with rotation around the axial center, and measures dimensions etc. of a workpiece according to displacement in an axial direction of the spindlebased on a rotation amount of the spindleAccording to this measuring instrument, a pitch P of the lead screwis twice as large or more than the difference between an external diameter R and a core diameter r thereof, and the difference between the external diameter R and the core diameter r is one-fifth or less of the external diameter R. Because of the lead screwwith the large pitch, the spindlecan be moved at high speed, thus enhancing operational performance of the measuring instrument.