Patents by Inventor Gerhard Freidhof

Gerhard Freidhof 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).

  • Fastener including a screw and a supporting element
    Patent number: 6872040
    Abstract: A fastener (1) includes a screw (2) and a supporting element (3). The screw (2) includes a head (4), a shank (8) and a threaded portion (12). The threaded portion (12) is located on the shank (8). The threaded portion (12) includes a thread having an outer diameter (14). The threaded portion (12) includes a thread runout (25) facing the head (4) of the screw (2). The shank (8) includes a shank portion (10) having a diameter (11) which is smaller than the outer diameter (14) of the thread. The supporting element (3) is captively connected to the screw (2), and it includes at least one narrow location (27). The narrow location (27) has a diameter (28) which is smaller than the outer diameter (14) of the thread. The narrow location (27) includes at least one surface element (30, 35) facing the thread runout (25) and forming an enveloping cone (31) enveloping the thread runout (25) to prevent the supporting element (3) from getting clamped at the thread runout (25) of the screw (2).
    Type: Grant
    Filed: April 11, 2003
    Date of Patent: March 29, 2005
    Assignee: KAMAX-Werke Rudolf Kellermann GmbH & Co. KG
    Inventors: Wolfgang Deeg, Gerhard Freidhof, Jürgen Hohl
  • Fastener including a screw and a supporting element
    Publication number: 20030194292
    Abstract: A fastener (1) includes a screw (2) and a supporting element (3). The screw (2) includes a head (4), a shank (8) and a threaded portion (12). The threaded portion (12) is located on the shank (8). The threaded portion (12) includes a thread having an outer diameter (14). The threaded portion (12) includes a thread runout (25) facing the head (4) of the screw (2). The shank (8) includes a shank portion (10) having a diameter (11) which is smaller than the outer diameter (14) of the thread. The supporting element (3) is captively connected to the screw (2), and it includes at least one narrow location (27). The narrow location (27) has a diameter (28) which is smaller than the outer diameter (14) of the thread. The narrow location (27) includes at least one surface element (30, 35) facing the thread runout (25) and forming an enveloping cone (31) enveloping the thread runout (25) to prevent the supporting element (3) from getting clamped at the thread runout (25) of the screw (2).
    Type: Application
    Filed: April 11, 2003
    Publication date: October 16, 2003
    Inventors: Wolfgang Deeg, Gerhard Freidhof, Jurgen Hohl