Patents by Inventor Axel Ziegler

Axel Ziegler 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).

  • Stud driver and spring therefor
    Patent number: 6182881
    Abstract: A stud driver for driving fastener studs in place with the aid of a propelling piston moved by a propellant contains a return spring concentrically surrounding a piston rod of the propelling piston. The return spring has roughly the shape of a relatively thin-walled cylindrical sleeve of elastomeric material reinforced at regular intervals by metallic ring disks. These metallic ring disks prevent any uncontrolled deformation of the elastomeric sleeve in high-speed movement of the propelling piston.
    Type: Grant
    Filed: April 16, 1998
    Date of Patent: February 6, 2001
    Assignee: Adolf Wurth GmbH & Co. KG
    Inventors: Gerd Kellner, Axel Ziegler
  • Volumetric batch dosing device
    Patent number: 6170718
    Abstract: A volumetric dosing system for bulk material utilizes a telescoping measuring container in which the upper portion carries the upper limit sensor for the height of the bulk material in the container and extends into the lower container below the level of the bulk material therein. Upper and lower closures are controlled by this sensor and another sensor detecting the system. The unit is disposed between a mixer and a silo.
    Type: Grant
    Filed: June 24, 1999
    Date of Patent: January 9, 2001
    Inventors: Axel Ziegler, Andreas Gr{umlaut over (u)}nder