The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 09, 2020
Filed:
Jul. 26, 2012
Applicant:
Ralph Longsworth, Allentown, PA (US);
Inventor:
Ralph Longsworth, Allentown, PA (US);
Assignee:
SUMITOMO (SHI) CRYOGENICS OF AMERICA, INC., Allentown, PA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F25B 9/06 (2006.01); F25B 9/14 (2006.01); F04B 15/08 (2006.01); F02G 3/02 (2006.01); F02G 1/02 (2006.01);
U.S. Cl.
CPC ...
F25B 9/06 (2013.01); F02G 1/02 (2013.01); F02G 3/02 (2013.01); F04B 15/08 (2013.01); F25B 9/14 (2013.01); F02G 2250/03 (2013.01);
Abstract
To provide refrigeration below 200 K, a Brayton cycle engine contains a light reciprocating piston. The refrigerator includes a compressor, a gas-balanced reciprocating engine having a cold rotary valve, a counterflow heat exchanger, a gas storage volume with valves that can adjust system pressures, a variable speed engine and a control system that controls gas pressure, engine speed, and the speed of the piston. The engine is connected to a load such as a cryopanel, for pumping water vapor, through insulated transfer lines.