Joseph A Schillinger, Age 5710632 N Scottsdale Rd UNIT B, Scottsdale, AZ 85254

6345451, Feb 12, 2002

Mar 23, 2000

09/535672

Gregory Khosrov Arslanian - Pipersville PA
Michael Henry Evans - Antwerp, BE
Joseph Anthony Schillinger - Allentown PA

Air Products and Chemicals, Inc. - Allentown PA

F26B 700

34428

Coolant gas recovery and reuse from a heat exchanger is automatically interrupted when the oxygen content of the used gas exceeds a predetermined maximum concentration and is recommenced when the oxygen content falls below a predetermined minimum concentration. The mass flow of coolant gas introduced into the passageway is controlled independently of its composition and, during normal operation, the mass flow ratio of coolant gas withdrawn for recovery to coolant gas introduced into the heat exchanger is maintained constant. This ratio can be ramped up to the constant level in a predetermined manner on start up of fiber cooling and following recovery interruption. The invention provides both methods and apparatus and has particular application to Optical Fiber manufacture.

6011456, Jan 4, 2000

Dec 30, 1998

9/223123

Phillip W. Eckels - Florence SC
David Jonathan Chalk - Slatington PA
Thomas Joseph - Macungie PA
Joseph Anthony Schillinger - Allentown PA

H01F 100

335300

An open architecture recondensing superconducting magnet utilizing an upper and lower cryogen vessel connected by a passageway which extends above the bottom of upper cryogen vessel to discontinue the flow of liquid cryogen through the passageway to reserve liquid cryogen in the upper cryogen vessel when the cryogen level falls to provide an increased ride-through period in the event of a depleting liquid cryogen supply due to failure of the cryogen gas recondenser. A signal is provided to indicate the need to correct the failure.