US4398149A
Expired / Lapsed
US
⏱️ 0.0 years remaining
NMR Probe coil system
Assignee: Varian Medical Systems Inc
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Filing: 1981-02-02
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Granted: 1983-08-09
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Expires: 2001-02-02
Abstract
Abstract A saddle coil for operation in the probe of an NMR spectrometer is formed from coil portions of opposite helicities disposed on a flexible insulating material, the outer windings of said portions connected by a linking conductor disposed on said insulating medium, which medium is then deformed to form a cylindrical body.
Inventors
- 👤 Albert P. Zens
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:05
CPC Classifications
G; G01; G01R; G01R33/00; G01R33/20; G01R33/28; G01R33/32; G01R33/34; G01R33/34046; G01R33/34069; G01R33/34007
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
109 words
An NMR spectrometer comprising polarizing means for aligning nuclear moments of a sample, means for exciting rf resonances in said sample, receiver means for detecting said resonances, probe means communicating with said receiver means for coupling said resonance signal from said sample to said receiver, said probe means comprising saddle coil means comprising a first spiral winding portion and a second spiral winding portion, said second spiral winding portion wound in opposite sense to said first winding portion, the outer ends of said winding portions connected by a linking conductor, said winding portions capable of dispositions spaced apart in a common plane, said connecting link constrained to said plane.
Claim 2
Dependent Claim
109 words
An NMR spectrometer comprising polarizing means for aligning nuclear moments of a sample, means for exciting rf resonances in said sample, receiver means for detecting said resonances, probe means communicating with said receiver means for coupling said resonance signal from said sample to said receiver, said probe means comprising saddle coil means comprising a first spiral winding portion and a second spiral winding portion, said second spiral winding portion wound in opposite sense to said first winding portion, the outer ends of said winding portions connected by a linking conductor, said winding portions capable of dispositions spaced apart in a common plane, said connecting link constrained to said plane.
Claim 3
Dependent Claim
37 words
The apparatus of claim 1 wherein the centers of said spiral portions are spaced apart by an amount πR in a plane whereby said planar disposed winding portions may be formed as a cylinder of radius R.
Claim 4
Dependent Claim
17 words
The apparatus of claim 2 wherein said coil portions comprise conductors disposed on a flexible insulating material.
Claim 5
Dependent Claim
13 words
The apparatus of claim 2 wherein said coil portions comprise self-supporting conductive members.
References Cited (Backward Citations)
US2830212A
Cited
US3701959A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-08-08 | 1987-02-07 | 1987-08-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-08-08 | 1991-02-07 | 1991-08-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-08-08 | 1995-02-07 | 1995-08-09 | $7700.00 | Window Closed / Lapsed |