Patents by Inventor Gerd Dornhoefer

Gerd Dornhoefer 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: 9555854
    Abstract: A vehicle is provided which is operable to motor power and/or pedal power, in particular an electric bicycle, which includes a crankshaft drive having a bottom bracket spindle, a chain ring, which outputs a drive torque for the vehicle to a chain, an electric drive, and a cone ring transmission for the continuous variation of a gear step ratio, the cone ring transmission and the electric drive being situated at the crankshaft drive, and the cone ring transmission being connected to the crankshaft drive and set up in such a way that a torque generated by the rider is transmitted to the chain ring.
    Type: Grant
    Filed: March 3, 2014
    Date of Patent: January 31, 2017
    Assignee: Robert Bosch GmbH
    Inventors: Karl Bendel, Hans-Peter Dommsch, Katrin Martini, Gerd Dornhoefer
  • Publication number: 20160090151
    Abstract: A vehicle is provided which is operable to motor power and/or pedal power, in particular an electric bicycle, which includes a crankshaft drive having a bottom bracket spindle, a chain ring, which outputs a drive torque for the vehicle to a chain, an electric drive, and a cone ring transmission for the continuous variation of a gear step ratio, the cone ring transmission and the electric drive being situated at the crankshaft drive, and the cone ring transmission being connected to the crankshaft drive and set up in such a way that a torque generated by the rider is transmitted to the chain ring.
    Type: Application
    Filed: March 3, 2014
    Publication date: March 31, 2016
    Inventors: Karl BENDEL, Hans-Peter DOMMSCH, Katrin MARTINI, Gerd DORNHOEFER
  • Patent number: 9157408
    Abstract: The invention relates to a starter device (10) for cranking an internal combustion machine in a vehicle, having a pinion shaft (202) comprising a cranking pinion (22) at the front end and a pinion shaft (204) at the opposite end, slidingly guided and supported on a drive shaft (44) of the starter device (10) and received in a bearing by a bearing shell (210) of the starter device (10), characterized in that the cranking pinion (22) has a solid lubricant coating (216) at least in the area of the circumferential toothing (143).
    Type: Grant
    Filed: November 17, 2010
    Date of Patent: October 13, 2015
    Assignee: Robert Bosch GmbH
    Inventor: Gerd Dornhoefer
  • Publication number: 20120299417
    Abstract: The invention relates to a starter device (10) for cranking an internal combustion machine in a vehicle, having a pinion shaft (202) comprising a cranking pinion (22) at the front end and a pinion shaft (204) at the opposite end, slidingly guided and supported on a drive shaft (44) of the starter device (10) and received in a bearing by a bearing shell (210) of the starter device (10), characterized in that the cranking pinion (22) has a solid lubricant coating (216) at least in the area of the circumferential toothing (143).
    Type: Application
    Filed: November 17, 2010
    Publication date: November 29, 2012
    Applicant: ROBERT BOSCH GMBH
    Inventor: Gerd Dornhoefer
  • Patent number: 7111822
    Abstract: A valve for controlling a fluid, in particular for controlling a gas. The valve includes a valve housing which accommodates an electromagnetic actuating unit for a solenoid armature which is guided axially displaceably in the valve housing and which cooperates with a valve seat via a valve-closing member, so that a fluid stream from an inflow side to an outflow side of the valve is controllable. At least one lubricant chamber adjacent to the guide gap between the valve housing and the solenoid armature is provided.
    Type: Grant
    Filed: September 20, 2004
    Date of Patent: September 26, 2006
    Assignee: Robert Bosch GmbH
    Inventors: Gerd Dornhoefer, Guenther Bantleon, Thanh-Hung Nguyen-Schaefer, Martin Moeller, Thomas Hebner
  • Publication number: 20050087714
    Abstract: A valve for controlling a fluid, in particular for controlling a gas. The valve includes a valve housing which accommodates an electromagnetic actuating unit for a solenoid armature which is guided axially displaceably in the valve housing and which cooperates with a valve seat via a valve-closing member, so that a fluid stream from an inflow side to an outflow side of the valve is controllable. At least one lubricant chamber adjacent to the guide gap between the valve housing and the solenoid armature is provided.
    Type: Application
    Filed: September 20, 2004
    Publication date: April 28, 2005
    Inventors: Gerd Dornhoefer, Guenther Bantleon, Thanh-Hung Nguyen-Schaefer, Martin Moeller, Thomas Hebner
  • Patent number: 6540404
    Abstract: A sintered plain bearing for motors and gear drives, having a running surface formed by a bearing bore and capable of having lubricant applied to it from lubricant reservoirs in the bearing, in which the bearing bore has, alternatingly distributed over the circumference, high-compaction small-pore running surfaces and axially extending low-compaction open-pore lubricant reservoirs. Lubrication is improved, especially in the initial phases of operation, by the fact that the lubricant reservoirs are constituted by channel structures having at least two longitudinal channels, and that at least in some of the channel structures, some of the channel crests remaining between adjacent longitudinal channels are in contact with the shaft received by the bearing bore in order to transfer lubricant.
    Type: Grant
    Filed: November 15, 2000
    Date of Patent: April 1, 2003
    Assignee: Robert Bosch GmbH
    Inventors: Gerd Dornhoefer, Hans-Peter Koch, Andreas Vogt, Thomas Broghammer, Guido Kurz, Werner Stehr
  • Patent number: 6008557
    Abstract: A bearing for a driving shaft of an electrical machine is lubricated by a lubricant. Located between the bearing and rotating parts arranged on the driving shaft is a seal element for lubricant emerging from the bearing. The seal element is configured in the form of a slinger disk by which lubricant emerging from the bearing is returned to the bearing, thus resulting in a closed lubricant circulation. The slinger disk is produced entirely from an elastic material. Lubricant sent off from the slinger disk is returned directly to the bearing.
    Type: Grant
    Filed: July 16, 1998
    Date of Patent: December 28, 1999
    Assignee: Robert Bosch GmbH
    Inventors: Gerd Dornhoefer, Hartmut Nitzsche, Bernd Wieland