Patents by Inventor Jens Pflaesterer

Jens Pflaesterer has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Sealing arrangement for fuel cells
    Publication number: 20070210475
    Abstract: A sealing arrangement for fuel cells, including a at least one composite (40) formed of two cell separator plates (1, 4; BPP) with a deformable membrane electrode assembly (18; MEA) placed therebetween, the deformable membrane electrode assembly being composed of two porous, gas-permeable plates or layers (2, 3; GDL) and an ion-exchange membrane (5; PEM) placed therebetween, the lateral surfaces (7, 8, 9) of the membrane electrode assembly being set back with respect to the lateral surfaces (6, 10) of the cell separator plates to leave a sealing gap (19), an elastic sealing element (17) which encloses the composite in the manner of a peripheral sealing band (28), the sealing element (17) having a peripheral sealing strip (20) which extends into the sealing gap (19) to seal the sealing gap (19) in a gas-tight manner by compression between the cell separator plates (1, 4; BPP).
    Type: Application
    Filed: May 8, 2007
    Publication date: September 13, 2007
    Inventor: Jens Pflaesterer
  • Sealing arrangement for fuel cells
    Patent number: 7226684
    Abstract: A sealing arrangement for fuel cells, including a at least one composite (40) formed of two cell separator plates (1, 4; BPP) with a deformable membrane electrode assembly (18; MEA) placed therebetween, the deformable membrane electrode assembly being composed of two porous, gas-permeable plates or layers (2, 3; GDL) and an ion-exchange membrane (5; PEM) placed therebetween, the lateral surfaces (7, 8, 9) of the membrane electrode assembly being set back with respect to the lateral surfaces (6, 10) of the cell separator plates to leave a sealing gap (19), an elastic sealing element (17) which encloses the composite in the manner of a peripheral sealing band (28), the sealing element (17) having a peripheral sealing strip (20) which extends into the sealing gap (19) to seal the sealing gap (19) in a gas-tight manner by compression between the cell separator plates (1, 4; BPP).
    Type: Grant
    Filed: December 9, 2002
    Date of Patent: June 5, 2007
    Assignee: Carl Freudenberg KG
    Inventor: Jens Pflaesterer
  • Sealing arrangement for fuel cells
    Publication number: 20030235744
    Abstract: A sealing arrangement for fuel cells, including a at least one composite (40) formed of two cell separator plates (1, 4; BPP) with a deformable membrane electrode assembly (18; MEA) placed therebetween, the deformable membrane electrode assembly being composed of two porous, gas-permeable plates or layers (2, 3; GDL) and an ion-exchange membrane (5; PEM) placed therebetween, the lateral surfaces (7, 8, 9) of the membrane electrode assembly being set back with respect to the lateral surfaces (6, 10) of the cell separator plates to leave a sealing gap (19), an elastic sealing element (17) which encloses the composite in the manner of a peripheral sealing band (28), the sealing element (17) having a peripheral sealing strip (20) which extends into the sealing gap (19) to seal the sealing gap (19) in a gas-tight manner by compression between the cell separator plates (1, 4; BPP).
    Type: Application
    Filed: December 9, 2002
    Publication date: December 25, 2003
    Applicant: Carl Freudenberg KG
    Inventor: Jens Pflaesterer