Patent SE307082B successfully refreshed from Google Patents.
Patent US5814992A successfully refreshed from Google Patents.
US5814992A
Expired / Lapsed
US
⏱️ 0.0 years remaining
NMR probe head with cryogenically cooled preampifiers
Assignee: Bruker Biospin SAS
•
Filing: 1996-12-03
•
Granted: 1998-09-29
•
Expires: 2016-12-03
Abstract
Abstract A nuclear magnetic resonance (NMR) probe head for use in a room temperature bore of a superconducting NMR magnet cryostat for investigation of generally room temperature samples comprises a radio frequency (RF) receiving coil, a receiving coil preamplifier connected to the receiving coil, at least one additional coil and cryogenic means connected to the RF receiving coil, to the receiving coil preamplifier, and to the at least one additional coil for keeping the RF receiving coil, the preamplifier and the additional coil at a cryogenic temperature. The apparatus is improved in that at least one additional preamplifier is connected to the additional coil and to the cryogenic means the cryogenic means keeping the additional preamplifier at a cryogenic temperature. The apparatus exhibits improved performance and increased flexibility.
Inventors
- 👤 Max Erick Busse-Grawitz
- 👤 Walter Roeck
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 08:14
CPC Classifications
G; G01; G01R; G01R33/00; G01R33/20; G01R33/28; G01R33/32; G01R33/34; G01R33/34015; G01R33/34023
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
173 words
A nuclear magnetic resonance (NMR) probe head for use in a room temperature bore of a superconducting NMR magnet cryostat to investigate a room temperature sample comprising: a radiofrequency (RF) receiving coil surrounding the sample; a receiving coil preamplifier connected to said receiving coil; an additional coil surrounding said receiving coil; an additional coil preamplifier connected to said additional coil; cryogenic means connected to said receiving coil, said receiving coil preamplifier, said additional coil and said additional coil preamplifier for keeping said receiving coil, said receiving coil preamplifier, said additional coil and said additional coil preamplifier at a cryogenic temperature, said cryogenic means comprising liquid helium means for cooling said receiving coil and said additional and at least one of liquid nitrogen means and evaporated helium gas means for cooling said receiving coil preamplifier and said additional coil preamplifier; and a coil filter and a transmitter-receiver switch, wherein at least one of said liquid nitrogen means and said evaporated helium gas means are adapted for cooling said coil filter and said transmitter-receiver switch.
Claim 2
Dependent Claim
173 words
A nuclear magnetic resonance (NMR) probe head for use in a room temperature bore of a superconducting NMR magnet cryostat to investigate a room temperature sample comprising: a radiofrequency (RF) receiving coil surrounding the sample; a receiving coil preamplifier connected to said receiving coil; an additional coil surrounding said receiving coil; an additional coil preamplifier connected to said additional coil; cryogenic means connected to said receiving coil, said receiving coil preamplifier, said additional coil and said additional coil preamplifier for keeping said receiving coil, said receiving coil preamplifier, said additional coil and said additional coil preamplifier at a cryogenic temperature, said cryogenic means comprising liquid helium means for cooling said receiving coil and said additional and at least one of liquid nitrogen means and evaporated helium gas means for cooling said receiving coil preamplifier and said additional coil preamplifier; and a coil filter and a transmitter-receiver switch, wherein at least one of said liquid nitrogen means and said evaporated helium gas means are adapted for cooling said coil filter and said transmitter-receiver switch.
Claim 3
Dependent Claim
131 words
A nuclear magnetic resonance (NMR) probe head for use in a room temperature bore of a superconducting NMR magnet cryostat to investigate a room temperature sample comprising: a radiofrequency (RF) receiving coil surrounding the sample; a receiving coil preamplifier connected to said receiving coil; an additional coil surrounding said receiving coil; a plurality of additional coil preamplifiers, each additional coil preamplifier for preamplifying an NMR signal having a particular resonant frequency; means for connecting each of said plurality of additional coil preamplifiers to said additional coil; and cryogenic means connected to said receiving coil, said receiving coil preamplifier, said additional coil and said plurality of additional coil preamplifiers for keeping said receiving coil, said receiving coil preamplifier, said additional coil and said plurality of additional coil preamplifiers at a cryogenic temperature.
Claim 4
Dependent Claim
131 words
A nuclear magnetic resonance (NMR) probe head for use in a room temperature bore of a superconducting NMR magnet cryostat to investigate a room temperature sample comprising: a radiofrequency (RF) receiving coil surrounding the sample; a receiving coil preamplifier connected to said receiving coil; an additional coil surrounding said receiving coil; a plurality of additional coil preamplifiers, each additional coil preamplifier for preamplifying an NMR signal having a particular resonant frequency; means for connecting each of said plurality of additional coil preamplifiers to said additional coil; and cryogenic means connected to said receiving coil, said receiving coil preamplifier, said additional coil and said plurality of additional coil preamplifiers for keeping said receiving coil, said receiving coil preamplifier, said additional coil and said plurality of additional coil preamplifiers at a cryogenic temperature.
Claim 5
Dependent Claim
27 words
The probe head of claim 2, wherein said additional coil preamplifiers are adapted for preamplifying at least one of a 2H, 13C, 31P, and a 15N signal.
Claim 6
Dependent Claim
22 words
The probe head of claim 2, further comprising a stacking module for stacking said receiving coil preamplifier and said additional coil preamplifier.
Claim 7
Dependent Claim
27 words
The probe head of claim 4, wherein said stacking module comprises copper blocks in good thermal contact with said receiving coil preamplifier and said additional coil preamplifier.
Claim 8
Dependent Claim
77 words
The probe head of claim 2, wherein at least one of said receiving coil and said additional coil are adapted to also function as a transmitting coil and further comprising transmitting switching means for disconnecting at least one of said receiving coil and said additional coil from said receiving coil preamplifier and from said plurality of additional coil preamplifiers and for connecting said receiving coil to a transmitter and said additional coil to an additional coil transmitter.
Claim 9
Dependent Claim
23 words
The probe head of claim 2, wherein said receiving coil and said additional coil are decoupled from each other by appropriate geometrical arrangement.
References Cited (Backward Citations)
US4051429A
Cited
DE4013111A1
Cited
US5247256A
Cited
US5166620A
Cited
US5258710A
Cited
US5689187A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2001-09-28 | 2002-03-30 | 2002-09-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-09-28 | 2006-03-30 | 2006-09-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-09-28 | 2010-03-30 | 2010-09-29 | $7700.00 | Window Closed / Lapsed |