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. 09, 2013
Filed:
Jan. 16, 2009
Noritaka Fujimura, Ritto, JP;
Noritaka Fujimura, Ritto, JP;
Mitsubishi Heavy Industries, Ltd., Tokyo, JP;
Abstract
The present invention aims to provide an air-micrometer calibration device capable of securely causing an axis of a measuring-head tip portion and an axis of a master hole to coincide with each other. To this end, the air-micrometer calibration device () includes a small-diameter master hole (); a large-diameter master hole (); and positioning means for causing an axis of the measuring-head tip portion and an axis of the small-diameter master hole to coincide with each other when a measuring-head tip portion () is inserted in the small-diameter master hole (), and for causing the axis of the measuring-head tip portion and an axis of the large-diameter master hole to coincide with each other when the measuring-head tip portion is inserted in the large-diameter master hole, where the positioning means includes: a pressure oil supply passage (); a clamping sleeve (); and a hydraulic pressure chamber () surrounding a periphery of the clamping sleeve, and the clamping sleeve clamps a measuring-head body portion () (a case ()) in association with a pressure of a pressure oil supplied from the pressure oil supply passage to the hydraulic pressure chamber.