21
John R Purcell, Sibley C Burnett, Lewis R Creedon: Method of manufacturing a containment vessel for use with a pulsed magnet system. Advanced Cryo Magnetics, Fitch Even Tabin & Flannery, August 24, 1993: US05237738 (1 worldwide citation)

A method of manufacturing a helium containment vessel for use with a pulsed superconducting magnetic separator system is described. The containment vessel includes a superconducting coil positioned within the cryogenic containment vessel for providing a magnetic field. The containment vessel include ...


22
John R Purcell: Method of determining bonding in a composite superconductor. The United States of America represented by the United, Roland A Anderson, November 16, 1971: US3621386 (1 worldwide citation)

Bond quality between a superconductor and a coating thereabout of normal material having high electrical conductivity at superconducting temperatures is measured by interrupting the electrical continuity of the superconductor and cooling the superconductor and coating to a temperature to cause the s ...


23
Sibley C Burnett, L Cullen Andrews, Gregory S Beck, R Lewis Creedon, John R Purcell: Magnetic separator having an improved separation container configuration for use with a superconductive electromagnet. Outokumpu OYJ, Fitch Even Tabin & Flannery, September 5, 2000: US06112399

A method of designing and manufacturing a magnetic separation apparatus. Past separators generally had poor power efficiency, poor throughput performance, and/or were bulky. Designing the magnetic separator of the present invention involves selecting a diameter and height for a separation container ...


24
John R Purcell, Raymond E Sarwinski: Process of manufacturing a cryogenic regenerator. CDC Partners, R Gale Rhodes Jr, September 10, 1991: US05047192

Process of manufacturing a cryogenic regenerator including a plurality of channels for conducting a working fluid, including the steps of providing a cylindrical forming member having a longitudinal axis and a plurality of peripheral slots displaced axially and oriented substantially parallel to the ...


25
James G Pierce, Charles B Hood, Sibley C Burnett, John R Purcell: Refrigeration of superconducting magnet system. PHPK Technologies, October 12, 1999: USRE036332

A refrigeration system includes a dewar and a refrigerator/liquefier which meets the variable demands of a superconducting magnet within the dewar. The system is sized to meet average loads over a defined duty cycle, and is variably operable to meed demands. In the preferred embodiment, a first supp ...


26
Sibley C Burnett, John R Purcell, William P Creedon, Chandrashekhar H Joshi: Stirling cycle machine. CDC Partners, R Gale Rhodes Jr, June 5, 1990: US04930314

Improved Stirling cycle machine including at least a pair of eccentric disks fixed to a pair of rotatable shafts in phase with each other and which eccentric disks upon rotation of the shafts (in opposite directions in the preferred embodiment) also rotate (in opposite directions in the preferred em ...