|국가/구분||United States(US) Patent 등록|
|미국특허분류(USC)||62/45 ; 62/514R|
|발명자 / 주소|
|출원인 / 주소|
|인용정보||피인용 횟수 : 28 인용 특허 : 6|
A liquid cryogen dewar is constructed in which two or more liquid cryogen chambers are suspended within a case wherein the innermost cryogens have a higher boiling, or sublimation, temperature than the cryogen in the next outermost chamber. The chambers may contain liquid helium, liquid nitrogen and solid CO2 proceeding from the innermost to the outermost chamber. Superconducting electronic circuitry such as SQUID devices may be connected to the outer case of the liquid helium cryogen chamber. An isothermal shield is also suspended outside the helium cha...
In a dewar for maintaining superconducting temperatures for an extended period of time comprising an outer case, comprising a plurality of cryogen containing chambers, the improved structure wherein the dewar is constructed so that each of said cryogen chambers completely surrounds the next innermost one of said cryogen chambers, and, except for the innermost one of said cryogen chambers, the cryogens contained in each of said chambers are maintained in states such that each cryogen has a progressively higher phase change temperature proceeding from the ...