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. 01, 1997
Filed:
Aug. 16, 1995
Ronald L Bailey, Harvester, MO (US);
Young Dental Manufacturing Company, Earth City, MO (US);
Abstract
A dental prophylaxis angle includes a body defining a sleeve and a head. A drive assembly is rotatably mounted in the sleeve. A driven gear is rotatably received in the head to be driven by the drive assembly. A cap is mounted in the head to close the head and retain the driven gear in place in the head. A threaded bur tube on the driven gear extends into a stem portion of the cap. The stem portion includes an externally beveled annular knife edge which forms a seal with a dental tool, such as a prophy cup, which is threaded into the bur tube. A protector ring on the cap surrounds the knife edge to prevent damage to the knife edge should the angle be dropped or otherwise contact a hard surface. The protector ring is spaced from the stem sufficiently to permit an elastomeric portion of the dental tool to extend between the stem and the ring.