Patent · US Active

Dental handpiece having a rolling bearing

US10736713B2 · kind B2 · utility

0Cited by

3References

8Claims

0Family size

Assignee

Dentsply Sirona Inc. · US

Inventors

Thomas Bierbaum · Worms, DE
Matthias Rein · Roßdorf, DE
Ralf Sutter · Weinheim, DE
Siegfried Goisser · Einhausen, DE

Key dates

Filing date	Jun 22, 2018
Grant date	Aug 11, 2020
Priority date	—
Expiry date	Aug 28, 2038

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF16C2316/13
WIPO fieldMechanical elements
WIPO sectorMechanical engineering

Abstract

A dental handpiece (1) having a drive (3) of a tool (4), which drive is located in a head housing (2), has at least one media-conducting line arranged in the head housing, which media-conducting line has an outlet opening to the tool, and a tool receptacle (16) arranged in a drive chamber, which tool receptacle is rotatably supported by means of a rolling bearing (11) in a support (14) of the head housing (2) on a side of the drive chamber facing the tool. The rolling bearing has an outer race (13), which is supported against the head housing (2) radially in the support (14) in the area of a raceway (22) and which has a sub-area (21), the outside diameter D2 of which is reduced compared to the outside diameter D1 in the area of the raceway (22). The head housing has a housing projection (23), which extends into the area of the reduced outside diameter D2, and the media-conducting line (17) runs at least partially through said housing projection (23).

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.