Usha S Virk

8074457, Dec 13, 2011

May 12, 2006

11/433689

Uri Bin-Nun - Chelmsford MA, US
Jose P. Sanchez - Lawrence MA, US
Usha Virk - Wellesley MA, US
Xiaoyan Lei - Boxborough MA, US

Flir Systems, Inc. - Wilsonville OR

F25B 9/00

62 6, 60516, 60518, 60519

A compact cryocooler includes a gas compression piston () supported for reciprocal linear translation along a first longitudinal axis () and a gas displacing piston () supported for reciprocal linear translation along a second longitudinal axis (). The first longitudinal axis () and second longitudinal axis () are substantially orthogonal. A rotary motor () rotates a rotor () and associated motor shaft () about a motor rotation axis () disposed substantially parallel with the second longitudinal axis (). Motor shaft () first and second mounting features () traverse first and second eccentric paths around the motor rotation axis. A first drive coupling couples the first mounting feature () with the gas compression piston () and delivers a reciprocal linear translation along the first longitudinal axis () thereto. A second drive coupling couples the second mounting feature () with the gas displacing piston () and delivers a reciprocal linear translation along the second longitudinal axis () thereto.

20070261407, Nov 15, 2007

May 12, 2006

11/433697

Uri Bin-Nun - Chelmsford MA, US
Jose Sanchez - Lawrence MA, US
Usha Virk - Wellesley MA, US
Xiaoyan Lei - Boxborough MA, US

F01K 13/00

060645000

An integrated sensor assembly () includes a gas compression unit () having a first longitudinal axis () and a gas expansion unit () having a second longitudinal axis () and the gas expansion unit is disposed with its second longitudinal axis orthogonal to the gas compression unit first longitudinal axis (). A rotary motor () includes a rotor () supported for rotation with respect to a motor rotation axis () and the sensor assembly configuration is folded to orient the motor rotation axis substantially parallel with the second longitudinal axis (). A motor shaft () extending from the rotor includes a first and second mounting features () disposed substantially parallel with and radially offset from the motor rotation axis (). A first drive coupling couples between the first mounting feature () and a gas compression piston () and drives the piston () with a reciprocal linear translation directed along the first longitudinal axis (). A second drive coupling couples between the second mounting feature () and a gas displacing piston () and drives the piston () with a reciprocal linear translation directed along said second longitudinal axis ().

20120017607, Jan 26, 2012

Jul 22, 2010

12/841280

Uri Bin-Nun - Chelmsford MA, US
Jose Pascual Sanchez - Lawrence MA, US
Xiaoyan Lei - Boxborough MA, US
Usha Virk - Wellesley MA, US

FLIR Systems, Inc. - Wilsonville OR

F25B 9/14

62 6

The invention is directed to an improved cryogenic cooler with an expander where the regenerator matrix is decoupled from the displacer or piston, thereby allowing the design of each to be optimized substantially independently. The regenerator matrix is preferably positioned spaced apart from the displacer and can be designed to enhance thermal exchanges and flow rates of the working gas. In one embodiment, the regenerator matrix has a serpentine shape or U-shape disposed around the displacer and the cold finger. Preferably, the regenerator matrix is static. The thermal lengths of the cold finger and/or the displacer can be extended by minimizing their geometrical lengths. Additionally, the structural integrity or stiffness of the cold finger and/or displacer can be strengthened.