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:
Apr. 02, 1996
Filed:
Apr. 21, 1994
Tadao Saitoh, Koganei, JP;
Akira Nagayama, Tokyo, JP;
Nippon Telegraph and Telephone Corporation, Tokyo, JP;
Abstract
A constant range polishing apparatus for polishing an end face of an optical fiber connector ferrule. The apparatus comprises a polishing plate adapted to be rotated about a polishing plate axis for polishing the end face of the connector ferrule. The polishing plate includes a disc-shaped substrate having a circular surface including an outer ring area, an inner ring area disposed radially inwardly with respect to the outer ring area, and an inner portion disposed radially inwardly with respect to the inner ring area. The polishing plate further includes a ring grinding wheel disposed on the outer ring area for forming an adhesive removing ring area; a first elastic film polisher disposed in a region defined by the inner ring area and at a distance from the surface of the substrate, the first elastic film polisher forming a rough polishing ring area; and a second elastic film polisher disposed in a region defined by the inner portion and at a distance from the surface of the substrate, the second elastic film polisher forming a final polishing ring area. The apparatus further includes: a chuck for holding the connector ferrule at a position opposite the polishing plate, the chuck being rotatable about an axis of the connector ferrule; a mounting substrate disposed for rotatably supporting the chuck; and a drive means for positioning the polishing plate and the mounting substrate relative to one another.