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| Number | Title | Issue Date |
| 7198456 | Floating head reaction turbine rotor with improved jet quality A rotary jetting tool including a pressure-balanced rotor, which is achieved using a vented volume. Axial movement of the rotor relative to the housing caused by pressure imbalances acting on the rotor selectively uncovers or opens a vent that places the volume in f... | 04/03/2007 |
| 6927046 | Increased lysine production by gene amplification using coryneform bacteria The invention provides methods to increase the production of an amino acid from Corynebacterium species by way of the amplification of amino acid biosynthetic pathway genes in a host cell chromosome. In a preferred embodiment, the invention provides methods to incre... | 08/09/2005 |
| 6916176 | Rotation lock device for preventing undesired rotation of a shaft especially for handpieces used in medical treatments A rotation locking device located in the area of two separate, independent shafts or shaft sections for preventing the undesired rotation of a shaft or shaft section. The rotation locking device includes a locking pin which, in its idle position (during operation of... | 07/12/2005 |
| 5779474 | Sudden stop mechanism and air-gap seal for dental handpiece A high speed air-driven powerhead in a dental handpiece includes an automatic chuck with outside surfaces protection from overheating. An autochuck release push button on the back of the powerhead is constructed of low thermal conductivity and heat reflec... | 07/14/1998 |
| 5538423 | Apparatus for controlling operational parameters of a surgical drill The present invention relates to a dental drilling system having a programmable control unit. The control unit controls operating parameters of the drilling system, such as the direction of rotation, the speed of rotation and the torque of a tool bit of a... | 07/23/1996 |
| 4443195 | Driving and water pouring control device for dental air-turbine handpiece This disclosure relates to a driving and water pouring control device for dental air-drive handpiece. According to the control device, there is incorporated a water pouring on-and-off valve means into an air feed passageway for driving a turbine so as to ... | 04/17/1984 |
