Patent US3662304A successfully refreshed from Google Patents.
US3662304A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetic circuit structure for high-resolution nuclear resonance spectrometers
Assignee: Siemens AG
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Filing: 1970-07-02
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Granted: 1972-05-09
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Expires: 1990-07-02
Abstract
Abstract A pair of shells of approximately half-spherical form have magnetic members mounted therein with the end faces of the pole pieces coplanar with the annular end faces of the shells, coplanarity being achieved by lapping. Distance pieces are placed in notches in the annular end faces of the shells, which are filled with insulating material up to a level below the end faces of the pole pieces.
Inventors
- 👤 Wolfgang Bringe
- 👤 Eberhard Querfurth
- 👤 Hans-Albr Schanbacher
- 👤 Hans-Jurgen Seiberth
- 👤 Wolfgang Vieser
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 14:40
CPC Classifications
G; G01; G01R; G01R33/00; G01R33/20; G01R33/28; G01R33/38; G01R33/383
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
126 words
A magnetic circuit structure for high resolution nuclearresonance spectrometers comprising a pair of oppositely disposed pole pieces permanently mounted on active magnetic members and having their end faces parallel to each other, characterized in that the magnetic structure (M) comprises a pair of shell members (S1 and S2) forming a hollow body of rotational symmetry, said active magnetic members (T1 and T2) with said pole piecEs (P1 and P2) being disposed coaxial to each other therein and the annular faces (R1 and R2) of the shell members (S1 and S2) being disposed in the plane of the end faces (F1, F2) of the pole pieces (P1, P2), distance pieces (D) being provided between said annular faces (R1, R2) so as to define the distance a therebetween.
Claim 2
Dependent Claim
126 words
A magnetic circuit structure for high resolution nuclearresonance spectrometers comprising a pair of oppositely disposed pole pieces permanently mounted on active magnetic members and having their end faces parallel to each other, characterized in that the magnetic structure (M) comprises a pair of shell members (S1 and S2) forming a hollow body of rotational symmetry, said active magnetic members (T1 and T2) with said pole piecEs (P1 and P2) being disposed coaxial to each other therein and the annular faces (R1 and R2) of the shell members (S1 and S2) being disposed in the plane of the end faces (F1, F2) of the pole pieces (P1, P2), distance pieces (D) being provided between said annular faces (R1, R2) so as to define the distance a therebetween.
Claim 3
Dependent Claim
30 words
A magnetic circuit structure as claimed in claim 1, in which centering members (Z) are disposed along said annular surfaces (R1, R2) in oppositely disposed annular notches (RN1, RN2) therein.
Claim 4
Dependent Claim
20 words
A magnetic circuit structure as claimed in claim 1, in which said shell members (S1, S2) are of soft iron.
Claim 5
Dependent Claim
40 words
A magnetic circuit structure as claimed in claim 1, in which the active magnetic members (T1, T2) are embedded up to a level below the end faces (F1, F2) of the pole pieces (P1, P2) in an insulating material (7).
Claim 6
Dependent Claim
25 words
A magnetic circuit structure as claimed in claim 1, in which the active magnetic members (T1, T2) are bolted to said shell members (S1, S2).
Claim 7
Dependent Claim
34 words
A magnetic circuit structure as claimed in claim 1, in which said pole pieces (P1, P2) are fastened on said active magnetic members (T1, T2) by means of centering rings (Z1, Z2) threaded thereon.
Claim 8
Dependent Claim
27 words
A magnetic circuit structure as claimed in claim 1, in which said distance pieces (D) are of a material having a high saturation value of magnetic induction.
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) | 1975-05-09 | 1975-11-08 | 1976-05-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-09 | 1979-11-08 | 1980-05-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-09 | 1983-11-08 | 1984-05-09 | $7700.00 | Window Closed / Lapsed |