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71. 发明专利

JP2000221149A LOOP GAP RESONATOR 失效
公开(公告)号：JP2000221149A
公开(公告)日：2000-08-11
申请号：JP2365699
申请日：1999-02-01
申请人： JEOL LTD
发明人： IIMA YOSHIO , SAGUCHI AKIHIRO
IPC分类号： A61B5/055 , G01N24/10 , G01R33/343
摘要： PROBLEM TO BE SOLVED: To easily set and detach a loop gap part to a shielding vessel by firmly setting the loop gap part to one end of a base, inserting the loop gap part into the shielding vessel and detachably setting the other end part of the base to the shielding vessel. SOLUTION: A loop gap part 1 is set firmly to one end of a base 2 with screws or the like, which is inserted into a shielding vessel 4 from an insertion opening 7 set to the shielding vessel 4. Screws 8 are screwed to screw holes 6 of the shielding vessel 4, whereby the loop gap part 1 is set together with the base 2 detachably to an internal space of the shielding vessel 4. When the loop gap part 1 is polluted by a living body sample 11 and the polluted part is required to be cleaned or the loop gap part 1 is to be replaced with one conforming to a purpose, the screws 8 are loosened and the loop gap part 1 is separated together with the base 2 from the shielding vessel 4. Furthermore, the loop gap part 1 is separated from the base 2. Accordingly, the loop gap part can be cleaned or replaced easily.

73. 发明专利

JPH09184814A RESONANCE FREQUENCY ADJUSTING MECHANISM OF LOOP GAP RESONATOR 失效
公开(公告)号：JPH09184814A
公开(公告)日：1997-07-15
申请号：JP34346295
申请日：1995-12-28
申请人： JEOL LTD
发明人： IIDA SATOSHI , SAGUCHI AKIHIRO
IPC分类号： G01R33/32 , G01N24/10 , G01R33/343
摘要： PROBLEM TO BE SOLVED: To provide a resonance frequency adjusting mechanism capable of preventing the change of the electromagnetic field distribution in a loop gap resonator by the movement of a dielectric. SOLUTION: A loop gap resonator 11 is supported and fixed in a shield box 12, for example, by fixing pawls 13 made of fluoroplastic. The loop gap resonator 11 is formed by bending the central part of a thin plate electrode having predetermined width and predetermined length in a loop shape and bending both end parts of an electrode at the part of a gap 14 so as to parallelly protrude them toward the outside of the loop as gap extending electrodes 15. A dielectric plate 16 is inserted in the gap formed between the gap extending electrodes 15 and fixed to the leading end part of a support plate 17 by a rivet and, by allowing the support plate 17 to advance and retreat from the outside of the shield box 12 by a fine adjustment mechanism 18, the insertion quantity of the dielectric plate 16 into the gap is adjusted.

74. 发明专利

JPH07333310A LOOP GAP RESONATOR, AND ITS COMBINATION STRUCTURE 失效
公开(公告)号：JPH07333310A
公开(公告)日：1995-12-22
申请号：JP12913394
申请日：1994-06-10
申请人： JUNKOSHA CO LTD
发明人： IWASAKA HIDETO , HIROSE TETSUYA , OKI HAJIME
IPC分类号： G01R33/20 , A61B5/055 , G01R33/343
摘要： PURPOSE:To manufacture a resonator a suitably, stably and to easily adjust changes in oscillation frequency generated by making a loop constitute inductance and a gap capacitance, and inserting a to be inspected sample within the loop, so that microwave is supplied. CONSTITUTION:Inside a circular hole 3, a loop 3a consisting of such conductive material as copper is formed. Relating to a circular holes 4 and 3, passing through in the same axis direction as the loop 3a, grooves communicated with the groove of specified width form a gap 3b. The loop 3a constituted inductance L, and at least one gap 3b constitutes capacitance C. A to be inspected sample is inserted into the loop 3a, for example, through a loop antenna, microwave is supplied into the loop 3a. The microwave magnetic field generated within a resonator by the microwave concentrates within the loop 3a, and, microwave electric field concentrates on the gap 3b, so that, with this microwave magnetic field, the to be inspected sample is inspected in nondestructive manner.

79. 发明专利

JPH02191433A STRUCTURE OF SURFACE ELECTRIC-COIL 失效
公开(公告)号：JPH02191433A
公开(公告)日：1990-07-27
申请号：JP15357289
申请日：1989-06-15
申请人： NAT RES DEV
发明人： PIITAA MANSUFUIIRUDO
IPC分类号： G01R33/32 , A61B5/055 , G01R33/34 , G01R33/341 , G01R33/3415 , G01R33/343
摘要： PURPOSE: To form an array of coils which have good remote field performance as receiving or transmitting coils by connecting plural small coils installed on the surface of prescribed space separately or individually to respond with requested signals or to generate a magnetic field. CONSTITUTION: A surface electric coil structure and a coil structure for generation of a magnetic field of NMR imaging and NMR spectrum method are formed. The localized surface coil consists of plural small coils densely mounted on the spherical surface around the point P. If these coils are not strongly coupled, picking of signals at each coil is independent from each other. According to the Ampere's circuit theory, a magnetic field at the point P generated from a single loop with a diameter (b) through which electricity passes has the same value as those generated from N coils dispersed on the cap-shaped spherical surface each of which has a diameter (a) smaller than (b) and through which electricity passes.

80. 发明专利

JPS61284650A RESONATOR 失效
公开(公告)号：JPS61284650A
公开(公告)日：1986-12-15
申请号：JP12933386
申请日：1986-06-05
申请人： MAX PLANCK GESELLSCHAFT
发明人： HERUMAN BURUNNERU , KARURU HERUMAN HAUSERU , UERUNERU FUAITO
IPC分类号： G01N24/12 , G01N24/10 , G01R33/20 , G01R33/32 , G01R33/343 , G01R33/345 , G01R33/422 , G01R33/60

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