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:
Feb. 26, 1980
Filed:
Jul. 03, 1978
Hiroshi Sugai, Higashihama Minami, JP;
Haruo Ogawa, Higashihama Minami, JP;
Kabushiki Kaisha Morita Seisakusho, Kyoto, JP;
Abstract
A cartridge-type chuck for use in a dental handpiece wherein a substantially cylindrical cartridge case incorporates within itself at least a friction-type chuck body and a stopper provided with a square hole of a smaller diameter than the inner diameter of said chuck body, said cartridge case being formed at its front part into truncated cone by tapering the outer circumferential surface and is provided at its thickened rear part with a threaded interface on the circumference, is disclosed. This cartridge-type chuck is able to be loaded and unloaded for the purpose of replacing it with ease in relation to the rotor disposed in the inside of a dental hand-piece, into which the dental cutting tool can be inserted by a single step, and whose holding power is strong enough to be free from occurrence of the center whirling of the spindle of said cutting tool.