Steven C Jacobs

Author:

Steven M. Jacobs

ISBN #:

0818607246

Author:

Steven Jacobs

ISBN #:

0761832459

Author:

Steven Jacobs

ISBN #:

2871932492

Author:

Steven Jacobs

ISBN #:

9055440981

Author:

Steven Jacobs

ISBN #:

9055442860

Author:

Steven Jacobs

ISBN #:

9056170171

Author:

Steven Jacobs

ISBN #:

9056625187

Author:

Steven L. Jacobs

ISBN #:

0313013691

US Patent:

20130019610, Jan 24, 2013

Filed:

Jul 18, 2012

Appl. No.:

13/551938

Inventors:

Carl B. ZIMM - Madison WI, US
Steven A. JACOBS - Madison WI, US

International Classification:

F25B 21/00

US Classification:

62 31

Abstract:

A method includes identifying at least partial degradation of a magnetocaloric material in a magnetic cooling system, wherein the magnetiocaloric material has a Curie temperature. The method also includes regenerating the magnetocaloric material by maintaining the magnetocaloric material at a regenerating temperature, wherein the regenerating temperature is different from the Curie temperature of the magnetocaloric material.

US Patent:

20180005735, Jan 4, 2018

Filed:

Dec 7, 2015

Appl. No.:

15/535621

Inventors:

- Ludwigshafen, DE
Markus SCHWIND - Madison WI, US
David VAN ASTEN - Utrecht, NL
Steven Alan JACOBS - Madison WI, US

Assignee:

BASF SE - Ludwigshafen

International Classification:

H01F 1/01
F25B 21/00

Abstract:

A magnetocaloric cascade contains a sequence of magnetocaloric material layers having different Curie temperatures T, wherein the magnetocaloric material layers include a cold-side outer layer, a hot-side outer layer and at least three inner layers between the cold-side outer layer and the hot-side outer layer, and each pair of next neighboring magnetocaloric layers of the magnetocaloric cascade has a respective Curie-temperature difference amount ΔTbetween their respective Curie temperatures, wherein the hot-side outer layer or the cold-side outer layer or both the hot-side and cold-side outer layer exhibits a larger ratio mΔS/ΔTin comparison with any of the inner layers, m denoting the mass of the respective magnetocaloric material layer and ΔSdenoting a maximum amount of isothermal magnetic entropy change achievable in a magnetic phase transition of the respective magnetocaloric material layer.

US Patent:

20170372821, Dec 28, 2017

Filed:

Dec 7, 2015

Appl. No.:

15/536036

Inventors:

- Ludwighsafen, DE
Markus SCHWIND - Antwerpen, BE
David VAN ASTEN - Utrecht, NL
Steven Alan JACOBS - Madison WI, US

Assignee:

BASF SE - Ludwighsafen

International Classification:

H01F 1/01
F25B 21/00

Abstract:

A magnetocaloric cascade contains a sequence of magnetocaloric material layers having different Curie temperatures T, wherein the magnetocaloric material layers include a cold-side outer layer, a hot-side outer layer and at least three inner layers between the cold-side outer layer and the hot-side outer layer.

US Patent:

20170159979, Jun 8, 2017

Filed:

Feb 16, 2017

Appl. No.:

15/434340

Inventors:

- Milwaukee WI, US
John Paul Leonard - Cambridge WI, US
Steven Lee Russek - Glendale WI, US
Steven Alan Jacobs - Madison WI, US
Carl Bruno Zimm - Madison WI, US

International Classification:

F25B 21/00
B29C 39/00

Abstract:

The present invention provides a porous thermal regenerator apparatus and method of making a porous thermal regenerator comprised of metallic or intermetallic particles that are held together in a porous three dimensional network by a binding agent (such as epoxy). One aspect of the apparatus is that the porosity of the porous thermal regenerator is greater than the tapped porosity of the particles comprising the porous thermal regenerator; moreover, the high-porosity apparatus is durable, that is, it remains intact when exposed to strong time-varying magnetic forces while immersed in aqueous fluid. This high porosity, when combined with high strength and aqueous heat transfer fluid stability, leads to improved porous thermal regenerators and concomitantly to magnetic refrigerators with improved performance.

US Patent:

20160146869, May 26, 2016

Filed:

Nov 18, 2015

Appl. No.:

14/945395

Inventors:

- Beaverton OR, US
Steven A. Jacobs - Madison WI, US

International Classification:

G01R 25/00
G01J 1/44

Abstract:

Embodiments of the invention include methods and devices for determining a phase angle offset between a phase angle of a local oscillator relative to a phase angle of a signal input of a Device Under Test (DUT). Some embodiments include a laser source and an optical phase adjustor, which may be embodied by a loop stretcher structured to controllably stretch a length of fiber optic cable, driven by a phase adjust driver. In other embodiments the phase angle offset information is conveyed to an oscilloscope for internal compensation.

US Patent:

20150068219, Mar 12, 2015

Filed:

Aug 28, 2014

Appl. No.:

14/471531

Inventors:

- Milwaukee WI, US
John Paul Leonard - Cambridge WI, US
Steven Lee Russek - Glendale WI, US
Steven Alan Jacobs - Madison WI, US
Carl Bruno Zimm - Madison WI, US

International Classification:

F25B 21/00
B29C 39/00

US Classification:

62 31, 264255

Abstract:

The present invention provides a porous thermal regenerator apparatus and method of making a porous thermal regenerator comprised of metallic or intermetallic particles that are held together in a porous three dimensional network by a binding agent (such as epoxy). One aspect of the apparatus is that the porosity of the porous thermal regenerator is greater than the tapped porosity of the particles comprising the porous thermal regenerator; moreover, the high-porosity apparatus is durable, that is, it remains intact when exposed to strong time-varying magnetic forces while immersed in aqueous fluid. This high porosity, when combined with high strength and aqueous heat transfer fluid stability, leads to improved porous thermal regenerators and concomitantly to magnetic refrigerators with improved performance.