Patents by Inventor Friedhelm Kumpf

Friedhelm Kumpf 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: 6052891
    Abstract: An electrical power cable includes plastic-insulated conductors and a single wire, which is enveloped by a lengthwise incoming insulating tape and is twisted together with the conductors, all of which are surrounded by a common sheath. The conductors and the single wire are twisted together with alternating stroke directions (SZ), and the tape is loosely placed around the single wire in the form of a strand with opposing edges of the tape having alternating directions of rotation along the length of the strand.
    Type: Grant
    Filed: September 16, 1998
    Date of Patent: April 25, 2000
    Assignee: Frisch Kabel - und Verseilmaschinenbau GmbH
    Inventor: Friedhelm Kumpf
  • Patent number: 5873160
    Abstract: An electrical power cable includes plastic-insulated conductors and a single wire, which is enveloped by a lengthwise incoming insulating tape and is twisted together with the conductors, all of which are surrounded by a common sheath. The conductors and the single wire are twisted together with alternating stroke directions (SZ), and the tape sheath is loosely placed around the single wire in the form of a strand with opposing edges of the tape having alternating directions of rotation along the length of the strand.
    Type: Grant
    Filed: October 11, 1995
    Date of Patent: February 23, 1999
    Assignee: Frisch Kabel-und Verseilmaschinenbau GmbH
    Inventor: Friedhelm Kumpf
  • Patent number: 5551224
    Abstract: A device for the reverse-twisting of stranding elements (4), comprising a stationary guide disk (1) and a twisting disk (2) located at a distance from the guide disk and able to rotate around its axis. At least one filament-shaped, tension-proof support element (7) is located between the guide disk (1) and the twisting disk (2). At least one holding element (5) is mounted on the support element (7) and is located at a distance from the guide disk (1) on one side, and from the twisting disk (2) on the other. The holding element (5) contains axial passage holes (6) for the stranding elements (4). The ends of the support elements (7) are affixed in holders (9), which are able to tilt and/or rotate with respect to the twisting disk (2).
    Type: Grant
    Filed: April 6, 1995
    Date of Patent: September 3, 1996
    Assignee: FRISCH Kabel-und Verseilmaschinenbau GmbH
    Inventors: Friedhelm Kumpf, Peter Haberberger
  • Patent number: 5513487
    Abstract: An apparatus to reverse-twist cable elements in the discharge direction, while at the same time the resulting twisted discharge is taken up in a storage path includes a mandrel for expanding the cable elements prior to the twisting thereof in the discharge direction.
    Type: Grant
    Filed: May 5, 1994
    Date of Patent: May 7, 1996
    Assignee: Frisch Kabel-und Verseilmaschinenbau GmbH
    Inventors: Friedhelm Kumpf, Dietmar Lieder, Rainer Duwelhenke