Patents by Inventor Wolfgang Marqardt

Wolfgang Marqardt 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).

  • Patent number: 4836197
    Abstract: The invention relates to a protective hood having a viewing window and an oxygen mask equipped with a breathing-gas connection for an oxygen supply. The protective hood is improved in that the oxygen supply is first established unhindered and the protective hood can be pulled over the head with a reliable manual movement when required without the oxygen supply having to be interrupted. Such a protective hood is especially useable by passengers in an aircraft. The protective hood is packed such that the hood is rolled up toward the front in four mutually perpendicular directions in the direction of the breathing-gas connection for the oxygen mask so that a rip loop holds the rolled parts together by means of a VELCRO closure. The rip loop is attached to the hood in the region thereof corresponding to the nape of the neck.
    Type: Grant
    Filed: June 10, 1988
    Date of Patent: June 6, 1989
    Assignee: Dragerwerk Aktiengesellschaft
    Inventors: Holmer Rohling, Frank Schulz, Wolfgang Marqardt