Patents by Inventor Michael Frondorf

Michael Frondorf 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).

  • Drive for mixing drum with elastic element arranged between bearing incorporating drive system and base
    Patent number: 7878699
    Abstract: A drive system for a mixer barrel for absorbing weight of the mixer barrel (1). The drive system communicates with a base (5) via a weight supporting element which supports the mixer barrel (1) and enables relative movement therebetween. The weight supporting element comprises at least one distortable elastic element (28, 29, 30, 39) enabling the movement between the drive system and the base (5). The at least one elastic element (28, 29, 30, 39) supports the weight of the mixer barrel (1) above the at least one elastic element (28, 29, 30, 39). The drive system (4) has at least one component (36) which limits movement of the drive system (4) and increases a distance between the drive system (4) and the base (5) such that a torque strain on the drive system (4) is braced by the base (5).
    Type: Grant
    Filed: August 8, 2005
    Date of Patent: February 1, 2011
    Assignee: ZF Friedrichshafen AG
    Inventors: Klaus Schiffner, Andreas Geier, Eduard Heilig, Michael Frondorf
  • Drive for a mixing drum
    Publication number: 20090034363
    Abstract: A drive for a barrel mixer having at least one elastic element (17) which is arranged between a base (5) and a drive system (4). The drive levels out relative displacement between the mixing drum (1) and the frame (2) of the vehicle. A number of components added to the drive are provided for absorbing and minimizing displacement of the drive system (4).
    Type: Application
    Filed: August 8, 2005
    Publication date: February 5, 2009
    Applicant: ZF Friedrichshafen AG
    Inventors: Michael Frondorf, Eduard Heilig, Andreas Geier, Klaus Schiffner
  • Gearbox for concrete mixer
    Patent number: 7331701
    Abstract: A drive for a mixing drum has a compensating device (25) for the purpose of compensating the motions between a drum (1) and a bearing bracket (4), which consists of a first component (20), an elastic element (17), and a second component (16).
    Type: Grant
    Filed: February 4, 2005
    Date of Patent: February 19, 2008
    Assignee: ZF Friedrichshafen AG
    Inventors: Eduard Heilig, Andreas Geier, Klaus Schiffner, Michael Frondorf
  • MOTORIZED TRACTION DEVICE FOR A PATIENT SUPPORT
    Publication number: 20070158921
    Abstract: A patient support including a traction device for powered movement of the patient support. The traction device includes a storage position and a use position.
    Type: Application
    Filed: March 14, 2007
    Publication date: July 12, 2007
    Inventors: John Vogel, Thomas Hanson, Craig Crandall, Joseph Kummer, Michael Frondorf, David Lubbers, Ronald Kappeler, Bradley Wilson, Darrell Metz, Doug Smith, Jeffrey Ruschke, John Vodzak, Terry Stratman, Eric Oberhaus
  • Hospital Bed Having Head Angle Alarm
    Publication number: 20070143920
    Abstract: A patient support apparatus includes a frame, a head section coupled to the frame and movable relative to the frame between first and second angular positions, and a sensor operable to determine an angular position of the head section. The apparatus also has an alarm that is activated if the angular position of the head section is not sufficiently large enough.
    Type: Application
    Filed: November 27, 2006
    Publication date: June 28, 2007
    Inventors: Michael Frondorf, Bradley Wilson, Jacqueline Robertson, Michael Boland
  • Gearbox for concrete mixer
    Publication number: 20060176133
    Abstract: A drive for a mixing drum has a compensating device (25) for the purpose of compensating the motions between a drum (1) and a bearing bracket (4), which consists of a first component (20), an elastic element (17), and a second component (16).
    Type: Application
    Filed: February 4, 2005
    Publication date: August 10, 2006
    Inventors: Eduard Heilig, Andreas Geier, Klaus Schiffner, Michael Frondorf
  • Control apparatus for a patient support
    Publication number: 20060108158
    Abstract: A patient support including a traction device and a motor for moving the patient support. A motor disconnect arrangement is provided to enable manually powered movement of the patient support.
    Type: Application
    Filed: January 9, 2006
    Publication date: May 25, 2006
    Inventors: Joseph Kummer, Ronald Kappeler, Michael Frondorf, David Lubbers
  • Motorized traction device for a patient support
    Publication number: 20050236193
    Abstract: A patient support including a propulsion device for moving the patient support. The patient support includes a propulsion system having a propulsion device operably coupled to an input system.
    Type: Application
    Filed: April 12, 2005
    Publication date: October 27, 2005
    Inventors: John Vogel, Thomas Hanson, Craig Crandall, Joseph Kummer, Michael Frondorf, David Lubbers, Ronald Kappeler, Bradley Wilson, Darrell Metz, Doug Smith, Jeffrey Ruschke, John Vodzak, Terry Stratman, Eric Oberhaus
  • Motorized traction device for a patient support
    Publication number: 20050199430
    Abstract: A patient support including a propulsion device for moving the patient support. The patient support includes a propulsion system having a propulsion device operably coupled to an input system.
    Type: Application
    Filed: May 11, 2005
    Publication date: September 15, 2005
    Inventors: John Vogel, Thomas Hanson, Craig Crandall, Joseph Kummer, Michael Frondorf, David Lubbers, Ronald Kappeler, Bradley Wilson, Darrell Metz, Doug Smith, Jeffrey Ruschke, John Vodzak, Terry Stratman, Eric Oberhaus