Patents by Inventor Wilfred Hoffmann

Wilfred Hoffmann 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).

  • Publication number: 20070157439
    Abstract: A holding device for a breathing mask that is fastened to a protective helmet when in use includes a fastening hook connected to a flexible, length-adjustable tightening strap that is hooked into a receptacle on the protective helmet. Stop elements that are both frictionally engaged and in positive contact prevent the accidental release of the fastening hook together with the flexibility of the tightening strap that at the same time ensures an individually adjustable fit of the mask while sliding elements arranged at an offset to the stop elements ensure automatic optimum orientation of the tightening straps. The tightening strap and the fastening hook are coupled using a retainer piece molded to the tightening strap that is held in positive contact in the recess of a grip end connected with the fastening hook.
    Type: Application
    Filed: September 23, 2005
    Publication date: July 12, 2007
    Applicant: MSA Auer GmbH
    Inventors: Klaus Schmidtke, Philippe Fitoussi, Wilfred Hoffmann, Tanguy Seve
  • Publication number: 20050161653
    Abstract: A tensioning device for applying tension to a line extending between first and second objects. The tensioning device comprises a first engaging portion, a support surface, and first and second gripping portions defining a gripping notch. The first engaging portion is adapted to be connected to the first object. The support surface is adapted to support the line. The gripping notch is located adjacent to the support surface. The support surface supports the line to define a first line portion extending in a first direction, a second line portion in contact with the support surface, and a third line portion extending in a second direction. The third line portion is adapted to support the second object. The first line portion is pulled to place the line under tension. The gripping notch is arranged to engage the first line portion to inhibit movement of the line relative to the support surface.
    Type: Application
    Filed: January 26, 2005
    Publication date: July 28, 2005
    Inventors: Lester Greer, Randal Hanson, Wilfred Hoffmann