Patent US4737715A successfully refreshed from Google Patents.
US4737715A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coil system for nuclear magnetic resonance spectrometer probe
Assignee: Jeol Ltd
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Filing: 1986-02-10
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Granted: 1988-04-12
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Expires: 2006-02-10
Abstract
Abstract In a coil system for an NMR spectrometer probe, a coil is wound around a cylindrical volume for containing the sample. The coil is used for producing an RF magnetic field in a direction perpendicular to the axis of the cylindrical volume. Leads from the coil connect it to an external circuit for executing the coil. Two leads are arranged to overlap each other adjacent the cylindrical volume with a dielectric substance sandwiched therebetween. The disclosed coil structure lowers inductance, raises Q value and enables higher tuning frequencies, enhances signal to noise ratios and sensitivity.
Inventors
- 👤 Hiroshi Ikeda
- 👤 Shozo Shimizu
- 👤 Jun Kida
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:18
CPC Classifications
G; G01; G01R; G01R33/00; G01R33/20; G01R33/28; G01R33/32; G01R33/34; G01R33/34046; G01R33/34069; G01R33/34007; G01R33/34092; G01R33/36; G01R33/3628
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
89 words
An exciting and detecting coil system for an NMR spectrometer probe, the coil system comprising a coil portion wound around a cylindrical volume in which a sample is placed for producing an RF magnetic field in a direction perpendicular to the axis of the cylindrical volume, the coil system further having two leads for connecting the coil portion to an external circuit, said two leads overlapping each other adjacent the cylindrical volume, and a dielectric substance being sandwiched between the overlapped portions of the leads to form a capacitor.
Claim 2
Dependent Claim
89 words
An exciting and detecting coil system for an NMR spectrometer probe, the coil system comprising a coil portion wound around a cylindrical volume in which a sample is placed for producing an RF magnetic field in a direction perpendicular to the axis of the cylindrical volume, the coil system further having two leads for connecting the coil portion to an external circuit, said two leads overlapping each other adjacent the cylindrical volume, and a dielectric substance being sandwiched between the overlapped portions of the leads to form a capacitor.
Claim 3
Dependent Claim
31 words
In a coil system for an NMR spectrometer probe as set forth in claim 1, the further comprising each of the coil portions and the leads made of a sheet conductor.
Claim 4
Dependent Claim
156 words
An exciting and detecting coil system for an NMR spectrometer probe, the coil system being wound around a cylindrical volume in which a sample is placed, the coil system being adapted to produce an RF magnetic field in a direction perpendicular to the axis of the cylindrical volume, said coil system comprising: a pair of straight conductive portions extending parallel to the axis of the cylindrical volume and disposed substantially symmetrically with respect to the axis of the cylindrical volume; first arc-shaped conductive portions which connect together first ends of the straight conductive portions to form a coil; second discontinuous arc-shaped conductive portions which are similar in shape to the first arc-shaped conductive portions, which are connected to the other ends of the straight conductive portions and which have overlapped portions; and a dielectric substance being sandwiched between the overlapped portions of at least one of the second arc-shaped portions arranged adjacent to the cylindrical volume.
Claim 5
Dependent Claim
156 words
An exciting and detecting coil system for an NMR spectrometer probe, the coil system being wound around a cylindrical volume in which a sample is placed, the coil system being adapted to produce an RF magnetic field in a direction perpendicular to the axis of the cylindrical volume, said coil system comprising: a pair of straight conductive portions extending parallel to the axis of the cylindrical volume and disposed substantially symmetrically with respect to the axis of the cylindrical volume; first arc-shaped conductive portions which connect together first ends of the straight conductive portions to form a coil; second discontinuous arc-shaped conductive portions which are similar in shape to the first arc-shaped conductive portions, which are connected to the other ends of the straight conductive portions and which have overlapped portions; and a dielectric substance being sandwiched between the overlapped portions of at least one of the second arc-shaped portions arranged adjacent to the cylindrical volume.
Claim 6
Dependent Claim
38 words
A coil system for an NMR spectrometer probe as set forth in claim 3, wherein the first arc-shaped portions are discontinuous and overlapped and dielectric substances are sandwiched between the two overlapped portions of the first arc-shaped portions.
Claim 7
Dependent Claim
28 words
A coil system for an NMR spectrometer probe as set forth in claims 3 or 4, wherein each of the conductive portions is made of a sheet conductor.
Claim 8
Dependent Claim
46 words
A coil system for an NMR spectrometer probe as set forth in claims 3 or 4, wherein each of the conductive portions is made of a sheet conductor, and wherein a dielectric film is sandwiched between said overlapped ends of the sheet conductors to form capacitors.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-04-12 | 1991-10-12 | 1992-04-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-04-12 | 1995-10-12 | 1996-04-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-04-12 | 1999-10-12 | 2000-04-12 | $7700.00 | Window Closed / Lapsed |