Patents by Inventor John J. Dopazo

John J. Dopazo has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Multi-expander cryogenic cooler
    Patent number: 5214922
    Abstract: A cryogenic cooler 100 for cooling a plurality of detector arrays 106 having a single compressor 102 for reciprocating a cooling gas within the cryogenic cooler. A primary transfer line 108 is connected to the compressor for transferring the cooling gas. A reducing coupler 112 is connected to the primary transfer line for distributing the cooling gas between the primary transfer line and a plurality of equally sized secondary transfer lines 118. Each of the secondary transfer lines are connected to one of a plurality of modified expander elements 104. Each of the expander elements are in thermal communication with one of the plurality of detector arrays for cooling that one detector array as the gas is reciprocated within the cooler.
    Type: Grant
    Filed: October 24, 1991
    Date of Patent: June 1, 1993
    Assignee: Hughes Aircraft Company
    Inventor: John J. Dopazo