Patents by Inventor Holger Ullrich

Holger Ullrich 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: 10752228
    Abstract: A method for operating an electrohydraulic brake installation for a motor vehicle having at least first, second, third and fourth hydraulically actuatable wheel brakes, a first brake system including a master brake cylinder actuatable by a brake pedal and hydraulically connected by at least one electrically actuatable isolating valve to the four wheel brakes, and including a first electrically controllable pressure provision device hydraulically connected to the four wheel brakes via at least one electrically actuatable sequence valve, and a second brake system including a second electrically controllable pressure provision device hydraulically connected to the first and the third wheel brake, and including in each case one isolating valve for the first and third wheel brake. The isolating valve is arranged in each case in a hydraulic connection between the first brake system and the corresponding wheel brake.
    Type: Grant
    Filed: October 9, 2017
    Date of Patent: August 25, 2020
    Assignee: Continental Teves AG & Co. oHG
    Inventors: Thomas Peichl, Holger Schmidt, Thorsten Ullrich
  • Publication number: 20190358758
    Abstract: An accessory device for a hand-held power tool includes a dust collection box that has a housing and a filter unit configured to filter an airflow. The housing is configured to be connected to a housing of the accessory device via a first securing unit. The filter unit is configured to be connected to the housing of the dust collection box via a second securing unit. The filter unit has a first sealing element arranged on the dust collection box side and a second sealing element arranged on the accessory device side. The filter unit is sealed from the housing of the dust collection box and the housing of the accessory device via the first and second sealing elements. The hand-held power tool in one embodiment is configured with a percussive mechanism.
    Type: Application
    Filed: November 20, 2017
    Publication date: November 28, 2019
    Inventors: Andre Ullrich, Benjamin Nikolas Fischle, Juergen Dietel, Holger Froehling, Erwin Orendi
  • Publication number: 20190241167
    Abstract: A method for operating an electrohydraulic brake installation for a motor vehicle having at least first, second, third and fourth hydraulically actuatable wheel brakes, a first brake system including a master brake cylinder actuatable by a brake pedal and hydraulically connected by at least one electrically actuatable isolating valve to the four wheel brakes, and including a first electrically controllable pressure provision device hydraulically connected to the four wheel brakes via at least one electrically actuatable sequence valve, and a second brake system including a second electrically controllable pressure provision device hydraulically connected to the first and the third wheel brake, and including in each case one isolating valve for the first and third wheel brake. The isolating valve is arranged in each case in a hydraulic connection between the first brake system and the corresponding wheel brake.
    Type: Application
    Filed: October 9, 2017
    Publication date: August 8, 2019
    Inventors: Thomas Peichl, Holger Schmidt, Thorsten Ullrich
  • Patent number: 8157296
    Abstract: A connector device comprising a connector socket, a connector housing, and a connector plug. In an embodiment, the connector socket and connector plug may be configured so that they can be formed, for example, on pipe ends in a cold-forming process. The connector housing may be a plastic part that can be produced in an injection-molding process. Detent elements may secure the connector housing to the connector socket. The connector plug in turn may secure the detent elements in a locked position, so that the connector housing cannot become detached from the connector socket as long as the connector plug remains in the socket. A locking ring can secure the connector plug in the connector housing. The locking ring can, if necessary or desired, be located and configured in such a way that it can be moved into a release position with a tool.
    Type: Grant
    Filed: October 21, 2005
    Date of Patent: April 17, 2012
    Assignee: Eaton Fluid Power GmbH
    Inventors: Markus Ullrich, Daniel Buchmuller, Stefan Welle, Holger Ullrich
  • Publication number: 20090256354
    Abstract: The invention relates to a connector device comprising a connector socket, a connector housing, and a connector plug. In an embodiment, the connector socket and connector plug may be configured so that they can be formed, for example, on pipe ends in a cold-forming process. The connector housing may be a plastic part that can be produced in an injection-molding process. Detent elements may secure the connector housing to the connector socket. The connector plug in turn may secure the detent elements in a locked position, so that the connector housing cannot become detached from the connector socket as long as the connector plug remains in the socket. A locking ring can secure the connector plug in the connector housing. The locking ring can, if necessary or desired, be located and configured in such a way that it can be moved into a release position by means of a tool.
    Type: Application
    Filed: October 21, 2005
    Publication date: October 15, 2009
    Applicant: EATON FLUID POWER GMBH
    Inventors: Markus Ullrich, Daniel Buchmuller, Stefan Welle, Holger Ullrich
  • Patent number: 6883601
    Abstract: An air-conditioning system for a motor vehicle contains a heat exchanger with a heat-exchanger tube that features a profiled central channel and outer channels grouped around the central channel. This heat-exchanger tube is suitable for the construction of counterflow heat exchangers. For this purpose, the heat-exchanger tube is to be cut to corresponding lengths and provided with corresponding end pieces. Such heat exchangers have proven to be light, pressure resistant, and effective.
    Type: Grant
    Filed: October 23, 2001
    Date of Patent: April 26, 2005
    Assignee: Eaton Fluid Power GmbH
    Inventors: Holger Ullrich, Bert Leisenheimer
  • Patent number: 6807989
    Abstract: A flexible cord-like hollow object for the transportation of media is provided with an inner zone enclosed by a casing having an inner layer, a middle layer and an outer layer. A barrier layer, which is impermeable to volatile molecules of the medium to be transported, is integrated into the casing on the outer surface of the inner layer between the inner layer and the middle layer. The barrier layer comprises sub-elements that are arranged in a scale-like manner.
    Type: Grant
    Filed: March 10, 2003
    Date of Patent: October 26, 2004
    Assignee: Aeroquip-Vickers International GmbH
    Inventors: Silvia Enders, Holger Ullrich, Thomas Fritz
  • Patent number: 6637219
    Abstract: A fluid collector of a cooling device, which collects fluid carried along by the coolant in a reservoir, is arranged upstream of the compressor. The return of the fluid coolant, which can also contain oil, into the section leading to the compressor takes place via an inlet conduit. A control device regulates the reintroduction of the fluid via a regulating valve in such a way, that the vapor conveyed to the compressor does not contain any large fluid particles.
    Type: Grant
    Filed: December 13, 2001
    Date of Patent: October 28, 2003
    Assignee: Eaton Fluid Power GmbH
    Inventors: Bert Leisenheimer, Holger Ullrich
  • Patent number: 6631743
    Abstract: A flexible cord-like hollow object for the transportation of media is provided with an inner zone enclosed by a casing. A barrier layer, which is impermeable to volatile molecules of the medium to be transported, is provided on the casing surface facing the inner zone. The barrier layer comprises sub-elements that are arranged in a scale-like manner.
    Type: Grant
    Filed: September 23, 2002
    Date of Patent: October 14, 2003
    Assignee: Aeroquip-Vickers International GmbH
    Inventors: Silvia Enders, Holger Ullrich, Thomas Fritz
  • Publication number: 20030172982
    Abstract: The invention pertains to a flexible cord-like hollow object with an inner zone, which is enclosed by a casing, for the transportation of media, whereby a barrier layer (26), which is impermeable to the volatile molecules of the medium that is to be transported, is integrated into the casing (12).
    Type: Application
    Filed: March 10, 2003
    Publication date: September 18, 2003
    Inventors: Silvia Enders, Holger Ullrich, Thomas Fritz
  • Patent number: 6532994
    Abstract: A flexible cord-like hollow object for the transportation of media is provided with an inner zone enclosed by a casing having an inner layer, a middle layer and an outer layer. A barrier layer, which is impermeable to volatile molecules in the medium to be transported, is integrated into the casing on the outer surface of the inner layer between the inner layer and the middle layer. The barrier layer comprises sub-elements that are arranged in a scale-like manner.
    Type: Grant
    Filed: June 19, 2000
    Date of Patent: March 18, 2003
    Assignee: Aeroquip-Vickers International GmbH
    Inventors: Silvia Enders, Holger Ullrich, Thomas Fritz
  • Publication number: 20030019532
    Abstract: The invention pertains to a flexible cord-like hollow object with an inner zone, which is enclosed by a casing, for the transportation of media, [and] with a barrier layer that is impermeable to the volatile molecules of the medium that is to be transported.
    Type: Application
    Filed: September 23, 2002
    Publication date: January 30, 2003
    Inventors: Silvia Enders, Holger Ullrich, Thomas Fritz
  • Patent number: 6470915
    Abstract: A flexible cord-like hollow object for the transportation of media is provided with an inner zone enclosed by a casing. A barrier layer, which is impermeable to volatile molecules of the medium to be transported, is provided on the casing surface facing the inner zone. The barrier layer comprises sub-elements that are arranged in a scale-like manner.
    Type: Grant
    Filed: November 10, 2000
    Date of Patent: October 29, 2002
    Assignee: Aeroquip-Vickers International GmbH
    Inventors: Silvia Enders, Holger Ullrich, Thomas Fritz
  • Publication number: 20020078698
    Abstract: A fluid collector of a cooling device, which collects fluid carried along by the coolant in a reservoir, is arranged upstream of the compressor. The return of the fluid coolant, which can also contain oil, into the section leading to the compressor takes place via an inlet conduit. A control device regulates the reintroduction of the fluid via a regulating valve in such a way, that the vapor conveyed to the compressor does not contain any large fluid particles.
    Type: Application
    Filed: December 13, 2001
    Publication date: June 27, 2002
    Inventors: Bert Leisenheimer, Holger Ullrich