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. 20, 2018
Filed:
Mar. 04, 2010
Takao Kimura, Kanuma, JP;
Masanori Mizunuma, Kanuma, JP;
Takao Kimura, Kanuma, JP;
Masanori Mizunuma, Kanuma, JP;
Nakanishi Inc., Kanuma-shi, JP;
Abstract
The dental handpiece of a center-injection type has a bur sleeve () having an axial through hole capable of receiving and detachably holding therein a cutting bur having an axial through hole, upper and lower bearings () for rotatably supporting the bur sleeve (), and an injection nozzle () capable of being inserted into the axial through hole of the cutting bur from its proximal end for injecting cooling water through the other end. The dental handpiece () further has an upper seal means () arranged to seal the space between the upper region of the bur sleeve () and the upper bearing (), and a lower seal means (arranged to seal the space between the lower region of the bur sleeve () and the lower bearing ().