Title:
TURBINE HAND DRILL IN DENTISTRY
Document Type and Number:
WIPO Patent Application WO/2010/135992
Kind Code:
A1
Abstract:
A turbine hand drill in dentistry includes a head shell and a core. The head shell is provided with a socket for drill bit. The core includes a turbine (3) and a turbine shaft (7). Outside the socket for drill bit, an LED (5) connected with a power supply, mounted in the head shell, is provided. A generator which supplies power to light source is merely formed by way of adding an induction coil (4) in the original head. An LED (5) filament includes at least two parallel light emitting diode arrays in counter conducting directions. The filaments are arranged in a loop. A check valve (14) is mounted on an outlet passage, and it is used as a power switch. The turbine shaft (7) is a magnetic bearing. The turbine (3) is made from magnetically permeable material.
Inventors:
ZHANG WEIXING (CN)
LIU XIAOXIA (CN)
LIU XIAOXIA (CN)
Application Number:
PCT/CN2010/073256
Publication Date:
December 02, 2010
Filing Date:
May 26, 2010
Export Citation:
Assignee:
ZHENGZHOU ZEZHENG TECHNICAL SERVICES LTD (CN)
ZHANG WEIXING (CN)
LIU XIAOXIA (CN)
ZHANG WEIXING (CN)
LIU XIAOXIA (CN)
International Classes:
A61C1/05; A61C3/00
Foreign References:
| CN201481569U | 2010-05-26 | |||
| CN201333101Y | 2009-10-28 | |||
| CN101658443A | 2010-03-03 | |||
| US5800172A | 1998-09-01 | |||
| EP0192415A1 | 1986-08-27 | |||
| CN2576198Y | 2003-10-01 | |||
| CN100464111C | 2009-02-25 | |||
| CN2596652Y | 2003-12-31 | |||
| US6270342B1 | 2001-08-07 | |||
| CN2510028Y | 2002-09-11 |
Attorney, Agent or Firm:
ZHENGZHOU ZHONGYUAN PATENT AGENCY LTD. (Jinshui DistrictZhenghzou, Henan 3, CN)
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