Low heat loss liquid helium disconnect attachment and system
Patent 4107946 Issued on August 22, 1978. Estimated Expiration Date: 
May 3, 1997. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
May 3, 1997. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 3152452 3696627 InventorApplicationNo. 05/793335 filed on 05/03/1977US Classes:62/50.7, Specific conduit, valve, or coupling structure505/897, Cryogenic media transfer62/292, WITH MEANS FOR CHARGING CLOSED REFRIGERATION PRODUCING SYSTEM62/293HAND MANIPULABLE TOOLExaminersPrimary: Ostrager, Allen M.Attorney, Agent or FirmInternational ClassesF16L 59/065 (20060101)F16L 59/00 (20060101) F16L 59/06 (20060101) F16L 59/18 (20060101) F17C 13/00 (20060101) F17C 13/04 (20060101) F17C 13/10 (20060101) AbstractAn easily maintainable interface for magnet dewars which includes a low h leakage disconnect fitting that retains the vacuum integrity of both the dewar and the transfer line is provided. The fitting includes a bayonet-type insert having separate coils disposed about a central conduit for cooling or heating the unit depending upon intended use. Liquid helium is introduced axially through the bayonet which is adjustable to a purge position wherein either gaseous or liquid helium may be introduced to clean, heat or cool the unit, or a flow position wherein liquid helium is passed through the bayonet into the supply line. | |
