Patents by Inventor Roland Frehner

Roland Frehner 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: 4350549
    Abstract: A method and apparatus for producing hollow bodies by stringing a plurality of filaments or bands between a pair of grip means to form a winding core which becomes a part of the body, moving a reciprocating winding apparatus parallel to the axis of the core and winding filaments or bands around the core. The filaments or bands wound around the core are of a resin impregnated plastic.
    Type: Grant
    Filed: November 28, 1979
    Date of Patent: September 21, 1982
    Inventor: Roland Frehner
  • Patent number: 4246732
    Abstract: A pole, particularly for electric lines, formed by a hollow body of resin impregnated material which has a shape, of decreasing diameter the narrow end of the pole at its tip. Reinforcing members extend radial of the longitudinal axis of the pole along its length and filaments or bands are stretched over the reinforcing members with further filaments wound thereover along the pole axis. A method and apparatus for producing such poles in which a plurality of filaments or bands are strung between a pair of clamping means to form a core, reinforcing means are placed within the core, the clamped plurality of filaments or bands are rotated and a skein of wrapping material is wound over the core by a reciprocating machine. The tension of the winding operation is controlled to produce a dual tapered body, the body being cut in half to form two poles.
    Type: Grant
    Filed: February 27, 1978
    Date of Patent: January 27, 1981
    Inventor: Roland Frehner