Patents Assigned to Walter Vetter
  • Patent number: 5151144
    Abstract: Process for the manufacture of a tube for an expansion shaft. A plurality of fiber strata, each consisting essentially of long continuous fibers, and at least one layer of honeycomb material, the fiber strata and the layer(s) of honeycomb material being in alternating sequence forming are a sandwich compound, are applied to a mandrel having moldings or projections thereon. The fiber strata are applied so that few if any fibers are severed by the moldings. The tube has apertures, which are formed by the moldings. In order that the necessary openings do not weaken the structure of the carbon fibers, they are placed around the moldings forming the apertures and afterwards the sandwich compound is saturated with epoxy. The remarkable feature of the tube is the extremely light weight and the resulting advantages especially with regard to its handling.
    Type: Grant
    Filed: June 13, 1990
    Date of Patent: September 29, 1992
    Assignees: Walter Vetter, Otto Chlupsa
    Inventor: Otto Chlupsa