Lowell A Bellis

US Patent:

8490414, Jul 23, 2013

Filed:

May 16, 2007

Appl. No.:

11/803894

Inventors:

Robert C. Hon - Playa del Rey CA, US
Lowell A. Bellis - Long Beach CA, US
Cyndi H. Yoneshige - Huntington Beach CA, US
Carl S. Kirkconnell - Huntington Beach CA, US
Michael C. Barr - Torrance CA, US

Assignee:

Raytheon Company - Waltham MA

International Classification:

F28B 9/00
F01B 29/10

US Classification:

62 6, 60517, 60518, 60520, 60525

Abstract:

A thermal-cycle cryocooler, such as a Stirling-cycle cryocooler, has a single working volume that is utilized by both the compressor and the displacer. The compressor and the displacer have respective movable parts, one of which is surrounded by the other. One of the parts may be a piston, a portion of which moves within a central bore or opening in a cylinder that is the other movable part. The piston may be a component of the compressor and the cylinder may be a component of the displacer, or vice versa. The working volume is located in part in a bore of the cylinder, between the piston and a regenerator that is coupled to the cylinder. Movements of either the piston or the cylinder can directly (i. e. without the use of a gas transfer line or flow passage) cause compression or expansion of the working gas in the working volume.

US Patent:

8491281, Jul 23, 2013

Filed:

Jul 2, 2010

Appl. No.:

12/830041

Inventors:

Robert C Hon - Ft. Mitchell KY, US
Lowell A Bellis - Long Beach CA, US
Julian A Shrago - Garden Grove CA, US
Carl S. Kirkconnell - Huntington Beach CA, US

Assignee:

Raytheon Company - Waltham MA

International Classification:

F04B 43/00
F04B 45/00
F04B 45/02

US Classification:

417412, 417472, 62 6

Abstract:

In one embodiment, a compressor includes a motor assembly configured to compress a gas within a compression volume, the motor assembly including: a stationary coil assembly; a moving assembly having at least one magnet, and a gap located between the stationary coil assembly and the moving assembly; wherein the moving assembly is configured to reciprocate axially with respect to the stationary coil assembly when electrical current is applied to the stationary coil assembly, and to change the width of the gap between the stationary coil assembly and the moving assembly so as to provide magnetic axial stiffness against motion of the moving assembly. One or more embodiments may be used in a cryocooler assembly.

US Patent:

20080282706, Nov 20, 2008

Filed:

May 16, 2007

Appl. No.:

11/805320

Inventors:

Robert C. Hon - Playa Del Rey CA, US
Lowell A. Bellis - Long Beach CA, US
Cyndi H. Yoneshige - Huntington Beach CA, US

International Classification:

F25B 21/02
F25B 19/00

US Classification:

62 37, 62 6

Abstract:

A method and mechanism for eliminating one of the magnetic circuits in a conventional two motor Stirling cryocooler. The inventive cooler is a Stirling cycle cryogenic cooler with a magnetic circuit for generating a field of magnetic flux in two separate magnetic gaps; a first coil disposed in the flux field of one gap; and a second coil disposed in the flux field of the second gap. The second coil is mounted for independent movement relative to the first coil. In a specific embodiment, the first coil is a compressor coil and the second coil is a displacer coil. The coils are energized with first and second variable sources of electrical energy in response to signals from a controller.

US Patent:

20080282708, Nov 20, 2008

Filed:

May 16, 2007

Appl. No.:

11/803926

Inventors:

Lowell A. Bellis - Long Beach CA, US
Robert C. Hon - Playa del Rey CA, US

International Classification:

F25B 9/00

US Classification:

62 6, 248682

Abstract:

A cryocooler in which two independently moving flexure systems are split across a single magnetic structure, decreasing package size and increasing resistance to cantilevered mass sag due to external forces. A series of concentrically oriented flexure coupling shafts are provided that allow two independently moving flexure assemblies to be split across a single motor. A series of connectors are included on the forward side of the motor that pass through the outer shaft and allow the inner connecting shaft to be mounted to its flexures without interference. A series of close-out connections are included on the aft flexure stacks that makes assembly possible, providing firm mechanical connections without interference.

US Patent:

20100313577, Dec 16, 2010

Filed:

Jun 12, 2009

Appl. No.:

12/483319

Inventors:

Carl S. Kirkconnell - Huntington Beach CA, US
Michael C. Barr - Torrance CA, US
Lowell A. Bellis - Long Beach CA, US

Assignee:

RAYTHEON COMPANY - Waltham MA

International Classification:

F25B 9/14
F25B 19/00

US Classification:

62 6, 62 511

Abstract:

A method of removing heat due to compression of a working gas from a linear cryocooler is disclosed. The cryocooler includes a sealed housing, a displacer including a displacer piston and a displacer cylinder, and a compressor all arranged within the housing. The compressor includes a compressor piston that is movable within a compression chamber. The method includes providing a port in the compression chamber to remove heat from the compression chamber due to the compression of the working gas to the housing prior to entering the displacer piston.

US Patent:

20120067556, Mar 22, 2012

Filed:

Sep 22, 2010

Appl. No.:

12/888306

Inventors:

Robert C. HON - Ft. Mitchell KY, US
Lowell A. BELLIS - Long Beach CA, US

Assignee:

RAYTHEON COMPANY - Waltham MA

International Classification:

F28F 7/00

US Classification:

165168

Abstract:

A heat exchanger comprises a glass body having a first flat face and a second flat face on opposing ends, and defining a longitudinal axis therebetween. A plurality of holes in the glass body are elongated along the longitudinal axis by extending from said first flat face to said second flat face. The plurality of holes are configured to receive and direct a gas therethrough, to exchange heat between the gas and the glass body.

US Patent:

20140069115, Mar 13, 2014

Filed:

Sep 13, 2012

Appl. No.:

13/615136

Inventors:

Lowell A. Bellis - Long Beach CA, US
Dominic R. Gooden - Redondo Beach CA, US
Michael J. Ellis - Hawthorne CA, US

Assignee:

Raytheon Company - Waltham MA

International Classification:

F25B 9/00

US Classification:

62 6

Abstract:

A system includes a pulse tube, a compressor configured to create pulses of fluid in the pulse tube, and a surge tank. The surge tank includes a housing that defines a surge volume configured to receive the fluid from the pulse tube. An inertance channel defines a passageway through which the fluid flows to and from the surge volume. At least part of the inertance channel has an open side to the surge volume. The surge tank also includes an adjustable seal configured to block at least part of the open side of the inertance channel and to move in order to change a functional length of the inertance channel. The housing may include a material having a high coefficient of thermal expansion, and the adjustable seal may include a material having a low coefficient of thermal expansion.

US Patent:

20180306534, Oct 25, 2018

Filed:

Jun 26, 2018

Appl. No.:

16/019200

Inventors:

- Waltham MA, US
Lowell A. Bellis - Long Beach CA, US

International Classification:

F28F 21/00
F28F 7/02

Abstract:

A heat exchanger comprises a glass body having a first flat face and a second flat face on opposing ends, and defining a longitudinal axis therebetween. A plurality of holes in the glass body are elongated along the longitudinal axis by extending from said first flat face to said second flat face. The plurality of holes are configured to receive and direct a gas therethrough, to exchange heat between the gas and the glass body.