Patents by Inventor Markus Mandalka

Markus Mandalka 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).

  • Handheld work apparatus having a drive motor for driving a work tool and method for operating said apparatus
    Patent number: 9636792
    Abstract: A handheld work apparatus has a drive motor for driving a tool, an operating element for operating the drive motor, a first inhibiting unit and a second inhibiting unit. Each inhibiting unit has a disable state and an enable state. The operating element is inhibited for operating the drive motor when at least one of the inhibiting units is in its disable state. The work apparatus further has a locking device which locks the first inhibiting unit in its enable state if the second inhibiting unit is in its enable state. A method for operating the work apparatus provides that the first inhibiting unit is locked in its enable state when the first inhibiting unit and the second inhibiting unit are situated in their enable states at the same time.
    Type: Grant
    Filed: December 23, 2013
    Date of Patent: May 2, 2017
    Assignee: Andreas Stihl AG & Co. KG
    Inventors: Markus Mandalka, Georg Heinzelmann, Klaus Kaupp
  • HANDHELD WORK APPARATUS HAVING A DRIVE MOTOR FOR DRIVING A WORK TOOL AND METHOD FOR OPERATING SAID APPARATUS
    Publication number: 20140174772
    Abstract: A handheld work apparatus has a drive motor for driving a tool, an operating element for operating the drive motor, a first inhibiting unit and a second inhibiting unit. Each inhibiting unit has a disable state and an enable state. The operating element is inhibited for operating the drive motor when at least one of the inhibiting units is in its disable state. The work apparatus further has a locking device which locks the first inhibiting unit in its enable state if the second inhibiting unit is in its enable state. A method for operating the work apparatus provides that the first inhibiting unit is locked in its enable state when the first inhibiting unit and the second inhibiting unit are situated in their enable states at the same time.
    Type: Application
    Filed: December 23, 2013
    Publication date: June 26, 2014
    Applicant: Andreas Stihl AG & Co. KG
    Inventors: Markus Mandalka, Georg Heinzelmann, Klaus Kaupp