Patents by Inventor Wolfgang Obst

Wolfgang Obst 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: 5287050
    Abstract: A method is provided for synchronizing the counter of an electronic control device with the zero position, defined by a mechanical stop, of a pointer in an indicating instrument. The pointer is driven via a step-down gearing by a stepping motor having two windings perpendicular to each other and a two-pole rotor. The two windings are connected alternately to a source of voltage and to a measuring mechanism for determining the voltage induced in a winding not traversed by current. The pointer moves stepwise up to the mechanical stop, and the counter is set to zero in the absence of an induction. The method is substantially less expensive than prior methods. Upon an assembling of the stepping motor and the indicating instrument, a given alignment of the two-pole motor is associated with the zero position of the pointer, and the rotor is brought into this given alignment each time upon the start of the method.
    Type: Grant
    Filed: October 13, 1992
    Date of Patent: February 15, 1994
    Assignee: VDO Adolf Schindling AG
    Inventors: Klaus Kronenberg, Matthias Giron, Robert Belz, Wolfgang Obst