IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0733213
(2000-12-08)
|
우선권정보 |
JP-0355635 (1999-12-15) |
발명자
/ 주소 |
|
출원인 / 주소 |
- Sankyo Seiki Mfg., Co., Ltd.
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
4 인용 특허 :
4 |
초록
▼
A method for manufacturing a fluid bearing is provided. A mask member having at least two sets of grooves provided at least two places along an axial direction is affixed to an outer surface of an electrode section of a fluid bearing manufacturing tool. Each of the groove sets consists of multiple g
A method for manufacturing a fluid bearing is provided. A mask member having at least two sets of grooves provided at least two places along an axial direction is affixed to an outer surface of an electrode section of a fluid bearing manufacturing tool. Each of the groove sets consists of multiple grooves in a shape corresponding to designed fluid bearing grooves on a work piece, such as, for example, a sleeve section of the fluid bearing. The fluid bearing manufacturing tool is inserted into a hole created in the work piece, wherein a power source for electrolytic machining is connected between the fluid bearing manufacturing tool and the work piece. An electrolytic solution between the manufacturing tool and the work piece is allowed to flow to form fluid bearing grooves on an inner surface of the work piece through electrolytic machining.
대표청구항
▼
A method for manufacturing a fluid bearing is provided. A mask member having at least two sets of grooves provided at least two places along an axial direction is affixed to an outer surface of an electrode section of a fluid bearing manufacturing tool. Each of the groove sets consists of multiple g
A method for manufacturing a fluid bearing is provided. A mask member having at least two sets of grooves provided at least two places along an axial direction is affixed to an outer surface of an electrode section of a fluid bearing manufacturing tool. Each of the groove sets consists of multiple grooves in a shape corresponding to designed fluid bearing grooves on a work piece, such as, for example, a sleeve section of the fluid bearing. The fluid bearing manufacturing tool is inserted into a hole created in the work piece, wherein a power source for electrolytic machining is connected between the fluid bearing manufacturing tool and the work piece. An electrolytic solution between the manufacturing tool and the work piece is allowed to flow to form fluid bearing grooves on an inner surface of the work piece through electrolytic machining. yte, i.e., which include no acid, low acid, no base, or no conducting salts, and/or high metal ion, e.g., copper, concentration. Defect free filling of features is enhanced by a plating solution containing blends of polyethers ("carrier") and organic divalent sulfur compounds ("accelerator"), wherein the concentration of the carrier ranges from about 0.1 ppm to about 2500 ppm of the plating solution, and the concentration of the accelerator ranges from about 0.05 ppm to about 1000 ppm of the plating solution. The plating solution is further improved by adding an organic nitrogen compound at a concentration from about 0.01 ppm to about 1000 ppm to improve the filling of vias on a resistive substrate. The organic nitrogen is preferably a substituted thiadiazole, which is used at concentrations from 0.1 ppm to about 50 ppm of the plating solution, or a quartenary nitrogen compound, which is used at concentrations from about 0.01 ppm to about 500 ppm. electrode separated from the outer analyzing electrode by the electrolyte layer and in communication with the gas mixture, wherein MOxis a mixed oxide; a substrate coupled to the outer analyzing electrode; and a gas-permeable tunnel layer having a region directly exposed to the gas mixture, wherein the outer analyzing electrode has a region in contact with the gas-permeable tunnel layer, allowing the gas mixture to be supplied via the gas-permeable tunnel layer to the outer analyzing electrode. 2. The sensor of claim 1, wherein the gas mixture includes HC, NOxand CO. 3. The sensor of claim 1, wherein the gas-permeable tunnel layer covers the outer analyzing electrode. 4. The sensor of claim 1, wherein the outer analyzing electrode is surrounded by at least one of the substrate and the electrolyte layer. 5. The sensor of claim 1, wherein the MOxelectrode is directly exposed to the gas mixture. 6. The sensor of claim 1, wherein the MOxelectrode covers the electrolyte layer. 7. The sensor of claim 1, wherein the gas-permeable tunnel layer includes a gas intake surface which is not covered by the electrolyte layer and is not covered by the MOxelectrode. 8. The sensor of claim 1, wherein the gas-permeable tunnel layer includes ZrO2. 9. The sensor of claim 1, wherein the gas-permeable tunnel layer is doped with a catalytically active material. 10. The sensor of claim 9, wherein the catalytically active material includes a noble metal, a noble-metal alloy and/or a transitional metal oxide. 11. The sensor of claim 10, wherein the transitional metal oxide includes a manganese oxide. 12. The sensor of claim 10, wherein the catalytically active material is present in pores contained in the gas-permeable tunnel layer. 13. The sensor of claim 11, wherein the gas-permeable tunnel layer is present as a diffusion barrier which is permeable to specific gases. 14. The sensor of claim 1, wherein the gas-permeable tunnel layer includes a cavity. bank including a plurality of rows of tubes arranged in flow communication with a respective one of said inlet headers and receiving the stock flow from said inlet header, and a slice cone arranged after said at least one tube bank for receiving the stock flows from said at least one tube bank and discharging the stock onto a forming wire, the improvement comprising: a single dilution liquid inlet header, a plurality of dilution liquid inlet pipes arranged in a cross-machine direction and defining a plurality of regulation zones across a width of said web, each of said single dilution liquid inlet header providing a flow of diluting liquid to at least two layers of said web in each of said regulation zones, a distribution plate arranged between said inlet headers and a first one of said at least one tube bank in a stock flow direction, said distribution plate including stock flow pipes each aligning with a respective one of said tubes in said first tube bank and flow ducts for enabling the diluting liquid to be passed simultaneously into at least two selected layers of said web, conduit means operatively coupled to the single dilution liquid inlet header for passing the flow of diluting liquid from the single dilution inlet header into a corresponding one of said flow ducts in said distribution plate, and a single valve operatively coupled between said single dilution inlet header and each conduit means for regulating the flow of the diluting liquid through each of said conduit means for enabling the dilution liquid to be passed and regulated by the single valve simultaneously into at least two selected layers of the web in the regulation zone. 2. The multi-layer headbox of claim 1, further comprising an inlet plate substantially coextensive with said distribution plate and interposed between said inlet headers and said distribution plate, said inlet plate having flow passages aligning with said stock flow pipes in said distribution plate. 3. The multi-layer headbox of claim 1, wherein said tubes in said first tube bank are arranged in vertical columns, each of said columns being arranged at a specific location along the width of the headbox and including a plurality of said tubes, such that said stock flow pipes are arranged in aligned columns, each of said flow ducts in said distribution plate being arranged to enable the diluting liquid to be passed into at least two of said stock flow pipes in a respective one of said columns of stock flow pipes. 4. The multi-layer headbox of claim 3, wherein each of said flow ducts in said distribution plate is arranged to enable the diluting liquid to be passed into all of said stock flow to pipes in a respective one of said columns of stock flow pipes. 5. The multi-layer headbox of claim 3, wherein each of said flow ducts comprises a narrowing duct portion situated alongside said stock flow pipes in the respective one of said columns of stock flow pipes and branch ducts leading from said narrowing duct portion into a respective one of said at least two stock flow pipes in the respective one of said columns of stock flow pipes. 6. The multi-layer headbox of claim 1, wherein said slice cone comprises aprons extending over a length of said slice cone between adjacent flows of the stock. 7. The multi-layer headbox of claim 6, wherein said slice cone further comprises intermediate aprons arranged in the flows of the stocks, said intermediate aprons having a length shorter than a length of said aprons. 8. The multi-layer headbox of claim 1, wherein said tubes in each of said rows of tubes have the same cross-sectional shape and are equal in number such that velocities of the flows of the stocks are substantially equal to one another and differences in speed between the flows of the stocks do not cause impurity of layers. 9. The multi-layer headbox of claim 1, further comprising a single stock storage tank, means for forming a separate stock flow for each of said inlet headers fro
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