Fritz H Woeller

41987926, Apr 22, 1980

Jun 30, 1978

5/921626

Robert A. Administrator of the National Aeronautics and Space Frosch
Warren W. Christensen - San Jose CA
Ludwig A. Mayer - San Jose CA
Fritz H. Woeller - Sunnyvale CA

C08J 940
C08J 310
B01D 5320

521 55

New chromatographic materials have been developed to serve as the stationary phase of columns used in the separation of atmospheric gases. These materials consist of a crosslinked porous polymer matrix, e. g. , a divinylbenzene polymer, into which has been embedded an inorganic complexed ion such as N,N'-ethylene-bis(acetylacetoniminato)-cobalt (II). Organic nitrogenous bases, such as pyridine, may be incorporated into the chelate polymer complexes to increase their chromatographic utility. With such materials, the process of gas chromatography is greatly simplified, especially in terms of time and quantity of material needed for a gas separation.

46811427, Jul 21, 1987

Nov 7, 1985

6/795945

Fritz H. Woeller - Boulder Creek CA
Yutaka Matsumoto - San Jose CA

The United States of America as represented by the Administrator of the
National Aeronautics and Space Administration - Washington DC

F16K 3102

13761418

Solenoid valve (10) has a valve chamber (18) within valve body (12). Inlet and outlet tubes (22) and (24) extend through plate (14) into the chamber (18). Movable core (32) in chamber (18) extends into solenoid coil (30). Distal end (38) of core (32) has a silicone rubber plug (40). Other than when solenoid (30) is energized, compressed spring (48) biases core (32) downward so that surface (44) of the plug (40) is in sealing engagement with ends (26) and (28) of the tubes (22) and (24). Any leak at ends (26) and (28) increases pressure in the chamber (18), resulting in increased sealing force of the plug (40) against the other end (26) or (28). Flow direction through the valve (20) is easily reversed by changing connections to the tubes (22) and (24).