Patents by Inventor Robert Sperzel

Robert Sperzel 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: 20060179998
    Abstract: A string support assembly for use with a musical instrument includes a base member which is connected with the musical instrument adjacent to a connection between head and neck portions of the musical instrument. A plurality of pairs of string support members are connected with the base member. Each of the string support members includes a string positioning section having an arcuate outer side surfaces which engages one of the strings. A blocking section extends from the string positioning section to block movement of the string from between the string support members.
    Type: Application
    Filed: February 11, 2005
    Publication date: August 17, 2006
    Inventor: Robert Sperzel
  • Patent number: 5045006
    Abstract: A foot loop for a windsurfing board comprises a loop strip, which arches between two holders, which are adapted to be secured to the top surface of the board at spaced apart locations. The strip is adjustable to change the length of its arched portion and is preferably provided with upholstery. To provide a foot loop which can easily be manipulated and can exactly be adapted to the foot, at least one of the holders comprises an eyelet and the strip and disposed adjacent to said one holder is constituted by a freely terminating strap, which is threaded through said eyelet and is folded about said one holder and is detachably fixed in any of different positions to the top surface of the loop strip or of its upholstery in the arched portion of the loop.
    Type: Grant
    Filed: October 25, 1989
    Date of Patent: September 3, 1991
    Assignee: Alpha International Gesellschaft m.b.H.
    Inventors: Robert Sperzel, Wolfgang Berndorfer