Patent ID: 8161994
Filing Date: 2012-04-24
Classification: B60K,F16K,H01M,Y02E,Y10T

Abstract:
1. A product comprising: a valve housing having a housing interior having a wall and a liquid hydrogen inlet extending through said wall, a gaseous hydrogen inlet and at least one hydrogen outlet provided in fluid communication with said housing interior; an actuating valve having a valve head for sealing said gaseous hydrogen inlet from said hydrogen outlet when said actuating valve is in a first position, said actuating valve also having a piston circumferentially sealably engaging said valve housing wall, said piston having at least one liquid flow opening extending through said piston, and where said piston seals said liquid hydrogen inlet from said hydrogen outlet when said actuating valve is in a second position and in the first position the liquid hydrogen inlet, the hydrogen outlet and the liquid flow opening extending through the piston are in fluid communication to allow liquid hydrogen to flow therethrough; and a diaphragm provided in said housing interior for applying a reference force against said actuating valve for normally biasing said actuating valve in said first position, wherein liquid hydrogen flowing through said liquid hydrogen inlet applies a force acting against said reference force, and wherein, when said force is greater than said reference force, said actuating valve slides to said second position.