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:
Oct. 12, 1993
Filed:
Aug. 07, 1992
Takasuke Nakanishi, Kanuma, JP;
Nakanishi Dental Mfg. Co., Ltd., Tochigi, JP;
Abstract
A cartridge type dental handpiece contains a handpiece main body, a head housing provided at a distal end of the handpiece main body, and a cartridge detachably adapted within the head housing. The cartridge has a cartridge casing and a rotatable sleeve rotatably mounted within the cartridge casing and adapted for detachably holding a dental burr. The dental handpiece further contains a fluid passage defined between an inner surface of the head housing and an outer surface of the cartridge casing when the cartridge is mounted within the head housing, a fluid spraying port formed in a lower surface of the cartridge casing in communication with the fluid passage for spraying the fluid from the fluid passage onto a tooth being treated, and a communication port for supplying the fluid from a fluid supply duct within the handpiece main body into the fluid supply passage.