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11. 发明专利

DE69700114D1 未知
公开(公告)号：DE69700114D1
公开(公告)日：1999-03-25
申请号：DE69700114
申请日：1997-05-14
申请人： NGK INSULATORS LTD
发明人： HIROTA TOSHIKAZU , SHIBATA KAZUYOSHI , YAJIMA YASUHITO
IPC分类号： G01V9/00 , F01M11/10 , F16N29/00 , G01N15/02 , G01N29/036 , H01L41/08 , H02N2/00 , G01N29/02 , G01L5/00
摘要： An up tp 100 micro m thick ceramic plate (14) with an up to 100 micro m thick piezoelelectric film (20) is arranged as an axial flow particle sensor element. Primary resonance frequency is 300 kHz. Metal particles up to 50 micro m in size are distinguished from bubbles by using a high-pass filter with a higher cut-off frequency of 320 kHz to 1.8 MHz. Frequency upper limit is 10 MHz.

12. 发明专利

DE3840703A1 未知
公开(公告)号：DE3840703A1
公开(公告)日：1989-06-29
申请号：DE3840703
申请日：1988-12-02
申请人： NGK INSULATORS LTD
发明人： YAJIMA YASUHITO , MASE SYUNZO
IPC分类号： G01L9/04 , G01L9/00 , G01L19/06 , G12B17/02
摘要： The invention relates to a pressure sensor including a metallic housing having an open end with an opening, a ceramic diaphragm accommodated within the housing such that the diaphragm is exposed at its one major surface to a pressure of a fluid in an external space through the opening of the housing, and resistors formed integrally on the diaphragm. The electrical resistance of the resistors varies with the pressure acting on the ceramic diaphragm, whereby the pressure is determined by the electrical resistance. An electromagnetic shielding member is disposed within the metallic housing such that the shielding member is positioned between the resistor or resistors and the open end of the metallic housing. The shielding member is adapted to protect the resistors from an electromagnetic wave in the external space.

13. 发明专利

DE3839515A1 未知
公开(公告)号：DE3839515A1
公开(公告)日：1989-06-08
申请号：DE3839515
申请日：1988-11-23
申请人： NGK INSULATORS LTD
发明人： YAJIMA YASUHITO , WATANABE YASUSHI , SHIBATA KAZUYOSHI
IPC分类号： G01L23/12 , G01L9/00 , G01L19/06 , G01L23/18 , G01L23/22

14. 发明专利

DE69700114T2 未知
公开(公告)号：DE69700114T2
公开(公告)日：1999-07-22
申请号：DE69700114
申请日：1997-05-14
申请人： NGK INSULATORS LTD
发明人： HIROTA TOSHIKAZU , SHIBATA KAZUYOSHI , YAJIMA YASUHITO
IPC分类号： G01V9/00 , F01M11/10 , F16N29/00 , G01N15/02 , G01N29/036 , H01L41/08 , H02N2/00 , G01N29/02 , G01L5/00
摘要： An up tp 100 micro m thick ceramic plate (14) with an up to 100 micro m thick piezoelelectric film (20) is arranged as an axial flow particle sensor element. Primary resonance frequency is 300 kHz. Metal particles up to 50 micro m in size are distinguished from bubbles by using a high-pass filter with a higher cut-off frequency of 320 kHz to 1.8 MHz. Frequency upper limit is 10 MHz.

15. 发明专利

DE69201177T2 未知
公开(公告)号：DE69201177T2
公开(公告)日：1995-08-31
申请号：DE69201177
申请日：1992-08-19
申请人： NGK INSULATORS LTD
发明人： YAJIMA YASUHITO , ISHIGURO FUJIO , ISHIKAWA ZENJI
IPC分类号： G01F1/68 , G01F1/692 , G01P5/12 , H01C1/14
摘要： A resistor element for determining a parameter, including a ceramic support (12), an electrically resistive body (18) formed on the ceramic support, at least one lead wire (14) electrically connected to the electrically resistive body (18), and an adhesive (16) containing platinum for securing the lead wire(s) to the ceramic support. Each lead wire (14) includes a wire rod (22) having a lower thermal conductivity than platinum, and a covering layer (24) which covers the wire rod and is formed of an alloy including platinum as a major component. This provides low thermal conductivity of the wire (14) and good adhesion of the wire (14) to the adhesive (16).

16. 发明专利

DE3817695C2 未知
公开(公告)号：DE3817695C2
公开(公告)日：1994-09-22
申请号：DE3817695
申请日：1988-05-25
申请人： NGK INSULATORS LTD
发明人： YAJIMA YASUHITO
IPC分类号： G01L9/04 , B28B1/00 , B28B7/34 , G01L9/00 , G01L9/02
摘要： A pressure sensor including a ceramic diaphragm which is deformable in response to a pressure applied thereto, a ceramic base associated with a periphery of the ceramic diaphragm, for supporting the ceramic diaphragm, and at least one resistor formed on the ceramic diaphragm. Resistance value of the resistor are adapted to vary depending upon a magnitude of deformation of the ceramic diaphragm, and thereby represent the pressure applied to the ceramic diaphragm. The ceramic diaphragm and the ceramic base consist of a co-fired body obtained by co-firing an unfired diaphragm member and an unfired base member.

17. 发明专利

DE3773255D1 THERMOSENSITIVER WIDERSTAND. 未知
公开(公告)号：DE3773255D1
公开(公告)日：1991-10-31
申请号：DE3773255
申请日：1987-05-06
申请人： NGK INSULATORS LTD
发明人： KIKUCHI TORU , YAJIMA YASUHITO
IPC分类号： H05B3/42 , G01F1/68 , G01F1/692 , H01C7/02 , H01C17/24 , H01C17/26 , H05B3/20 , H01C7/00

18. 发明专利

DE3817905A1 未知
公开(公告)号：DE3817905A1
公开(公告)日：1988-12-08
申请号：DE3817905
申请日：1988-05-26
申请人： NGK INSULATORS LTD
发明人： YAJIMA YASUHITO , SHIBATA KAZUYOSHI , MASE SYUNZO
IPC分类号： G01L9/04 , G01B7/16 , G01L9/00 , G01L1/04 , G01L1/22 , G01B7/18
摘要： A strain sensor including a ceramic substrate deformable in response to a stress exerted thereon, and an electrically resistive layer formed on the ceramic substrate, so that a strain of the ceramic substrate caused by the stress is detected as a change in a resistance value of the electrically resistive layer. The electrically resistive layer has a composition which includes a dielectric material selected from the group consisting of glasses and ceramics, and at least one principal electrically conductive component in the form of a powder selected from the group consisting of: borides, carbides and nitrides of Ti, Zr, Hf, V, Nb, Ta, Cr, Mo and W; borides of Y, Sc and lanthanide series; BN; B4C; BSi; SiC; and Si3N4.

19. 发明专利

JPH06231903A RESISTOR ELEMENT 失效
公开(公告)号：JPH06231903A
公开(公告)日：1994-08-19
申请号：JP1770093
申请日：1993-02-04
申请人： NGK INSULATORS LTD
发明人： YAJIMA YASUHITO , ISHIGURO FUJIO
IPC分类号： G01F1/68 , G01F1/69 , G01K7/18 , G01P5/12 , H01C1/14 , H01C7/00 , H01C17/00
摘要： PURPOSE:To improve the durability of a resistor element by specifying the average value of the diameters in axial direction of a lead of the crystal gains on the surface of the lead to a specified value or less. CONSTITUTION:This is a resistor element 10 in which a metallic resistor 18 is formed around the outer side face of a tubular electric insulator 12, and the surface of the metallic resistor 18 is covered with a protective layer 19, and leads 14 are inserted and fixed, respectively, in both ends of the tubular electric insulator 12, and the metallic resistor 18 is electrically connected to the leads 14, respectively. And, the average values of the diameters in axial direction 4 of a lead of the crystal grains on the surface 1 of this lead is 10mum or under, or the maximum value of the grain diameters is 10mum or under. Furthermore, the surface of the lead 14 is platinum or alloy containing platinum. Moreover, this is a thermosensitive flow meter which measures the flow of the fluid, based on the resistance change by the temperature of this resistor element. Hereby, the durability of the resistor element and the thermosensitive flow meter using this as a detection element can be improved.

20. 发明专利

JPH06231902A CABLE SHEATHED WITH NOBLE METAL AND RESISTOR ELEMENT 失效
公开(公告)号：JPH06231902A
公开(公告)日：1994-08-19
申请号：JP1770193
申请日：1993-02-04
申请人： NGK INSULATORS LTD
发明人： ISHIGURO FUJIO , YAJIMA YASUHITO
IPC分类号： G01K7/16 , G01K7/18 , H01B5/02 , H01C1/14 , H01C7/00 , H01C17/12 , H01C17/24
摘要： PURPOSE:To improve the durability of a noble metal film at high temperature by substantially preventing at least one ingredient contained in a core material from diffusing to the outside surface of the noble metal. CONSTITUTION:A cable sheath with noble metal is arranged so as not to diffuse at least one ingredient contained in the core material 2 to the outside surface 4 f a noble metal film 3. Moreover, the core material 2 containing iron group metal such as nickel or the like is arranged so as not to diffuse at least one ingredient of these iron group metals to the outside surface 4 of the noble metal film 3. Furthermore, as the criteria of restraining diffusion, it is arranged so that the concentration of ingredients of the core material at the middle point 6 between the outside surface 4 and the inside surface 5 of the noble metal film 3 or the point 6 half the thickness of the noble metal film 3 may be 15% or under of the concentration of the ingredient within the core material 2. As the noble metal film 3, platinum, rhodium, silver, palladium, iridium, gold, or alloy of them is used. Hereby, the stability at high temperature and durability can be improved by preventing the decoloration of the noble metal film or the generation of the exfoliation.

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