IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0253975
(2002-09-24)
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발명자
/ 주소 |
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대리인 / 주소 |
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인용정보 |
피인용 횟수 :
1 인용 특허 :
30 |
초록
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The present invention provides a portable dental system for use in areas having inadequate sources of power, either for human or for veterinary dentistry. The system provides one or more handpieces, each driven driven by a pressurized nitrogen gas contained in a portable tank. A water reservoir is a
The present invention provides a portable dental system for use in areas having inadequate sources of power, either for human or for veterinary dentistry. The system provides one or more handpieces, each driven driven by a pressurized nitrogen gas contained in a portable tank. A water reservoir is also provided for medicated water to be applied to the tooth site. The system has two channels to which either a conventional dental handpiece or an abrasive handpiece can be attached. When two abrasive handpieces are attached, two different abrasive materials may be used by the system, one material for cleaning and one material for cutting or abrading.
대표청구항
▼
The present invention provides a portable dental system for use in areas having inadequate sources of power, either for human or for veterinary dentistry. The system provides one or more handpieces, each driven driven by a pressurized nitrogen gas contained in a portable tank. A water reservoir is a
The present invention provides a portable dental system for use in areas having inadequate sources of power, either for human or for veterinary dentistry. The system provides one or more handpieces, each driven driven by a pressurized nitrogen gas contained in a portable tank. A water reservoir is also provided for medicated water to be applied to the tooth site. The system has two channels to which either a conventional dental handpiece or an abrasive handpiece can be attached. When two abrasive handpieces are attached, two different abrasive materials may be used by the system, one material for cleaning and one material for cutting or abrading. plurality of cylinder bores extending generally horizontally and spaced apart generally vertically from each other, and a plurality of firing plugs corresponding to the respective cylinder bores, the exhaust unit being positioned lower than the lower-most firing plug. 11. The outboard motor as set forth in claim 10, wherein both the firing plugs and the exhaust unit are disposed generally on the same side of the outboard motor.12. The outboard motor as set forth in claim 1, wherein the driveshaft housing has a third exhaust section communicating with the second exhaust passage and opening to the atmosphere, and the exhaust unit is positioned higher than the third exhaust section.13. The outboard motor as set forth in claim 1, wherein the engine operates on a four-stroke combustion principle.14. The outboard motor as set forth in claim 1, wherein the engine additionally includes a plurality of cylinder bores extending generally horizontally and spaced apart generally vertically from each other, and a plurality of firing plugs corresponding to the respective cylinder bores, the exhaust unit is positioned lower than the lower-most firing plug.15. An outboard motor comprising an internal combustion engine including a first exhaust passage, a driveshaft housing adapted to be mounted on an associated watercraft, a lower unit housing depending from a lower end of the driveshaft housing, the lower unit housing supporting a portion of a propulsion unit,a support member mounted on the driveshaft housing for supporting the engine, the engine, the support member, and the driveshaft housing together defining a recess therebetween, an exhaust unit detachably mounted on the support member, at least a portion of the exhaust unit extending in the recess, the exhaust unit defining a second exhaust passage coupled to the first exhaust passage, and a catalyzer disposed in the second exhaust passage. 16. The outboard motor as set forth in claim 15, wherein the exhaust unit is placed generally rearward of the support member.17. An exhaust gas purifying system for an outboard motor having an internal combustion engine and exhaust guide plate supporting the engine, comprising a first exhaust passage extending through both the engine and the exhaust guide plate, a second exhaust section coupled to the first exhaust passage, the second exhaust passage being defined in an outer exhaust unit disposed below the engine and next to the exhaust guide plate, a third exhaust passage coupled to the second exhaust passage and extending through the exhaust guide plate, and a catalyzer disposed in the second exhaust passage. 18. The exhaust gas purifying system as set forth in claim 16, wherein the exhaust unit is mounted on the exhaust guide plate.19. The exhaust gas purifying system as set forth in claim 16, wherein at least a portion of the second exhaust passage where the catalyzer is positioned juxtaposes a coolant jacket.20. The exhaust gas purifying system as set forth in claim 16, wherein the third exhaust section extends generally laterally.21. An outboard motor comprising a power head that is disposed atop a driveshaft housing, the power head comprising an engine positioned within a protective cowling, a support member positioned between the power head and the driveshaft housing, the engine being supported above a portion of the support member, an exhaust manifold extending downward toward the support member and communicating with a first passage defined in the support member, a generally C-shaped exhaust unit extending rearward of a portion of the support member and being disposed above another portion of the support member, a catalyst being supported within the exhaust unit, a second passage being defined in the support member that routes exhaust downward toward said driveshaft housing, and the exhaust unit communicating with the first passage and the second passage of the support member. 22. The outboard motor of claim 21, further comprising a water
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