Christopher J Campbell

US Patent:

42953375, Oct 20, 1981

Filed:

Dec 26, 1979

Appl. No.:

6/106671

Inventors:

Harry D. Johnson - Glen Allen VA
Christopher J. Campbell - Richmond VA
Thomas O. Turner - Midland NC
Carl W. Poole - Concord NC
James E. Gilmore - Mauldin SC
James R. Thomas - Mauldin SC

Assignee:

Philip Morris Incorporated - New York NY

International Classification:

F17C 1300

US Classification:

62 54

Abstract:

Compressors are utilized in an apparatus for treating a product such as tobacco with a liquid cryogen, such as carbon dioxide for removing vapor from a processing chamber and recompressing the vapor to facilitate its return to the cryogen system. When the compressors do not receive a supply of cool vapor from the processing chamber, the compressor temperature rises and the pressure drops. When the pressure reaches a predetermined minimum setpoint, the compressors are interconnected by means of a remotely controlled valve to a vessel containing cryogen vapor at a pressure greater than the pressure at the compressors. A supply of cool cryogen vapor thus flows to the compressors to reduce the temperature, thereby allowing continuous operation of the compressors during periods in which cryogen vapor flow from the processing chamber is interrupted or delayed.

Address:

6914 S Dewey Ct, Fredericksbrg, VA 22407

VIN:

4T1BK46K67U537067

Make:

TOYOTA

Model:

CAMRY

Year:

2007

Address:

5506 Tallow St, Fredericksbrg, VA 22407

VIN:

4T1BK46K97U046475

Make:

TOYOTA

Model:

CAMRY

Year:

2007