Low temperature cryocooler regenerator of ductile...

Refrigeration – Gas compression – heat regeneration and expansion – e.g.,...

Reexamination Certificate

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C165S004000

Reexamination Certificate

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07549296

ABSTRACT:
A multi-stage cryocooler having a relatively low temperature stage to cool to less than about 15K and having a regenerator including a ductile intermetallic compound including one or more rare earth elements and one or more non-rare earth metals.

REFERENCES:
patent: 5124215 (1992-06-01), Hashimoto
patent: 5186765 (1993-02-01), Arai et al.
patent: 5269854 (1993-12-01), Takahashi et al.
patent: 5332029 (1994-07-01), Tokai et al.
patent: 5537826 (1996-07-01), Gschneidner et al.
patent: 5593517 (1997-01-01), Saito et al.
patent: 5806979 (1998-09-01), Gschneidner, Jr. et al.
patent: 5974807 (1999-11-01), Gao et al.
patent: 6003320 (1999-12-01), Okamura et al.
patent: 6022486 (2000-02-01), Tokai et al.
patent: 6318090 (2001-11-01), Gschneidner et al.
patent: 2002/0139510 (2002-10-01), Ishizaki
patent: 2005/0274439 (2005-12-01), Gschneidner
U.S. Appl. No. 60/425,964, filed Nov. 2002, Gschneidner et al.
Ackerman et al., Cryogenic Regenerative Heat Exchangers, Plenum Press, New York, 1997.
Walker et al., Cryocoolers Part 1: Fundamentals, Plenum Press, New York, 1983.
Radebaugh, Cryocooler Applications, Cold Facts, vol. 16, No. 1, Winter 2000, pp. 1, 6, 7, 8, 16, 21, and 24-25.
ter Brake et al., Low-power Cryocooler Survey, Cryogenics, vol. 42, 2002, pp. 705-718.
Buschow et al., Extremely Large Heat Capacities between 4 and 10 K, Cryogenics, vol. 15, 1975, pp. 261-264.
Sahashi et al., New Magnetic Material R3T System with Extremely Large Heat Capacities Used as Heat Regenerators, Adv. Cryogenic Eng., vol. 35, 1990, pp. 1175-1182.
Kuriyama et al., High Efficient Two-stage GM Refrigerant with Magnetic Material in Liquid Helium Temperature Region, Adv. Cryogenic Eng., vol. 35, 1990, pp. 1261-1269.
Satoh et al., A Gifford-McMahon Cycle Cryocooler below 2 K, Cryocoolers 11, Kluwer Academic/Plenum Publishers, New York, 2001, pp. 381-386.
Numazawa et al., New regenerator Material for Sub-4K Cryocoolers, Cryocoolers 11, Kluwer Academic/Plenum Publishers, New York 2001, pp. 465-473.
Morin et al, Competition Between Multi-q Antiferromagnetic Structures in Cubic Rare Earth-Copper Compounds, J. Magn. Magn. Mater., vol. 21, 1980, pp. 243-256.
Hill, The Specific Heats of ErAg and TbAg Between 0.5 and 21 K, J. Phys. F: Met. Phys., vol. 17, 1987, pp. 243-255.
Biwa et al., Evaluation of Low-Temperature Specific Heats and Thermal Conductivities of Er-Ag Alloys as Regenerator Materials, Jpn. J. Appl. Phys, vol. 35, 1996, pp. 2244-2248.
Yagi et al., Studies of Low Temperature Specific Heats and Thermal Conductivities of CsC1-type (Pr1-XNdx) Ag (0≦ × ≦ 1) Intermetallic Compounds: Application to Regenerator Materials, Jpn. J. Appl. Phys., vol. 36, 1997, pp. 5638-5643.
Rawat et al., The Similar Dependence of the Magnetocaloric Effect and Magneto-resistance in TmCu and TmAg Compounds and Its Implications, J. Phys: Condens. Matter, vol. 13, 2001, pp. L379-L387.
Gschneidner et al., Low Temperature Cryocooler Regenerator Materials, Cryocoolers 12, Kluwer Academic/Plenum Publishers, New York, 2003, pp. 457-465.
Gschneidner et al., Effect of Interstitial Impurities on Magnetic Transitions of Er-rich PrxEr1-xAlloys, J. Solid State Chem., vol. 171, 2003, pp. 324-328.
Gschneidner, Jr. et al., Development of New Cryocooler Regenerator Materials, Presented at the 13th International Cryocooler Conference, Paper No. 83, Mar. 29-Apr. 1, 2004, pp. 1-9.

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