ROBERT J PHILLIPS
Vehicle Board in Upper Makefield, PA
License number
Pennsylvania MV090602L
Category
Vehicle Board
Type
Vehicle Salesperson
Address
Address
Upper Makefield, PA 18940
Professional information
Production Of Constant Composition Gas Mixture Streams
US Patent:
6382227, May 7, 2002
Filed:
May 9, 1997
Appl. No.:
08/853581
Inventors:
David W. Birch - Bordon, GB
Lesli B. Cosey - West Chicago IL
Carl W. Schmidt - Downers Grove IL
Robert F. Phillips - Newtown PA
D. Bruce Wilson - Spring City PA
Lesli B. Cosey - West Chicago IL
Carl W. Schmidt - Downers Grove IL
Robert F. Phillips - Newtown PA
D. Bruce Wilson - Spring City PA
Assignee:
The BOC Group, Inc. - Murray Hill NJ
International Classification:
G05D 1100
US Classification:
137 3, 137 88
Abstract:
Gas mixtures having precise compositions are prepared by separately pumping the components in liquid phase through piping, vaporizing the components, blending the components and analyzing the mixture for composition. A signal sent to a control unit causes any necessary change in the rate of pumping of the liquid components to reduce the difference between the measured concentration and the desired concentration. When the composition is within desired limits it is charged into gas cylinders.