Matthew J Voss

US Patent:

20220260657, Aug 18, 2022

Filed:

Oct 6, 2020

Appl. No.:

17/620318

Inventors:

- EINDHOVEN, NL
Matthew Jonathan VOSS - Clifton Park NY, US
John Robert ROGERS - Burnt Hills NY, US
John Arthur URBAHN - Saratoga Springs NY, US
Alexander James PYNE - Latham NY, US

International Classification:

G01R 33/3815
H01F 6/02
H01F 6/06
H01F 6/00
H01F 6/04

Abstract:

An apparatus () includes a cryostat () containing a volume of myogenic fluid. One or more electrically superconducting coils () is disposed within the cryostat. The one or more electrically superconducting coils is configured to produce a magnetic field when an electrical current is passed therethrough. One or more high temperature superconducting (HTS) current leads () is permanently disposed within the cryostat and coupled to the one or more electrically superconducting coils. One or more sensors () is positioned at or near the one or more HTS current leads to monitor the status of the HTS current leads. An HTS protection switch () is selectively coupled to the one or more HTS current leads. A magnet controller () controls the HTS protection switch to divert current from the one or more HTS current leads upon detection via the sensors of a quench of the one or more HTS current leads.

US Patent:

20210278491, Sep 9, 2021

Filed:

Oct 4, 2017

Appl. No.:

16/338789

Inventors:

- Eindhoven, NL
Matthew VOSS - Clifton Park NY, US

Assignee:

Koninklijke Philips N.V. - Eindhoven

International Classification:

G01R 33/38
G01R 33/3815
F25B 41/20
F25B 9/10
F25B 9/00

Abstract:

A cooling device () includes a heat exchanger (), a first flow loop () connecting a cold sink () and the heat exchanger, and a second flow loop () connecting a hot sink () and the heat exchanger. A first passive one way valve () disposed on the first flow loop is oriented to allow flow in an allowed direction of flow (F) and to block flow in the opposite direction. A second passive one way valve () disposed on the second flow loop is oriented to allow flow in an allowed direction of flow (F) and to block flow in the opposite direction. The allowed directions of flow produce counter-flow in the heat exchanger. In an illustrative embodiment, the hot sink is comprises a cryogenic magnet coil () and the hot sink is a cold head () and liquid helium tank ().

US Patent:

20190003743, Jan 3, 2019

Filed:

Dec 28, 2016

Appl. No.:

16/062712

Inventors:

- EINDHOVEN, NL
MATTHEW VOSS - LATHAM NY, US
JOHN ROBERT ROGERS - LATHAM NY, US

International Classification:

F25B 9/00
G01R 33/38
F25B 9/14

Abstract:

An MRI system is provided with a refrigeration system that includes dual compressors that are coupled to a single coldhead that cools the liquid helium in the MRI system. Because the single coldhead receives the compressed refrigerant regardless of the compressor that is being used, the unacceptable cooling loss that would have occurred with redundant coldheads is avoided. By coupling two compressors to a single coldhead, continuous operation can be provided despite a failure of either compressor. The dual refrigeration system may comprise a water-cooled compressor and an air-cooled compressor to enhance MRI system reliability in the event of a failure of the primary compressor or the cooling water circulation system. Alternatively, two water-cooled compressors may be provided, each with its own independent water system. Check valves may be used to enable passive control of the refrigerant gas flow from either compressor to the coldhead, thereby further improving the reliability.

US Patent:

20150323626, Nov 12, 2015

Filed:

Sep 22, 2013

Appl. No.:

14/652004

Inventors:

- Eindhoven, NL
ALEXANDER AKHMETOV - SCHENECTADY NY, US
ROBERT ADOLPH ACKERMANN - SCHENECTADY NY, US
PHILIPPE ABEL MENTEUR - NISKAYUNA NY, US
GLEN GEORGE PFLEIDERER - VOORHEESVILLE NY, US
MATTHEW VOSS - ALBANY NY, US

International Classification:

G01R 33/38
G01R 33/3815

Abstract:

An apparatus including a persistent current switch of a superconducting material which is electrically superconducting at a superconducting temperature and electrically resistive at a resistive mode temperature which is greater than the superconducting temperature. The apparatus further includes a first heat exchange element; a convective heat dissipation loop thermally coupling the persistent current switch to the first heat exchange element; a second heat exchange element spaced apart from the first heat exchange element; and a thermally conductive link thermally coupling the persistent current switch to the second heat exchange element. The first heat exchange element is disposed above the persistent current switch. The thermally conductive link may have a greater thermal conductivity at the superconducting temperature than at a second temperature which is greater than the superconducting temperature.