Patents by Inventor Henrik Lohrberg
Henrik Lohrberg 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).
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Patent number: 9920777Abstract: A differential cylinder for a hydromechanical drive for actuating an electrical switch, for example a high-voltage switch, is disclosed which includes a first pressure region for applying a working pressure, a second pressure region, and a piston which is capable of moving in a movement region and which is movable depending on a pressure difference between the first and second pressure region. A damping device is provided which, in the event of a movement of the piston in the direction of the second pressure region, provides damping with respect to the movement of the piston in a section of the movement region, wherein the damping is adjustable.Type: GrantFiled: February 3, 2014Date of Patent: March 20, 2018Assignee: ABB Schweiz AGInventors: Thomas Brenneis, Matthias Schmidt, Henrik Lohrberg, Frank Fiedler, Bruno Gehlert, Roland Palm
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Patent number: 9373455Abstract: A hydromechanical stored-energy spring mechanism is provided for operating at least one switching contact of a circuit breaker, for example, in a high-voltage switching system. The hydromechanical stored-energy spring mechanism includes a hydraulically operated close-open (CO) delay circuit configured to delay triggering of a switching process of the circuit breaker, and an electromechanical actuator provided in place of a hydraulic operation of the CO delay circuit. The electromechanical actuator generates a mechanical time delay or acceleration over an extended temperature range.Type: GrantFiled: February 3, 2012Date of Patent: June 21, 2016Assignee: ABB TECHNOLOGY AGInventors: Jörg Knospe, Henrik Lohrberg, Joachim Eggers, Franz-Josef Körber, Thomas Brenneis
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Publication number: 20140137731Abstract: A differential cylinder for a hydromechanical drive for actuating an electrical switch, for example a high-voltage switch, is disclosed which includes a first pressure region for applying a working pressure, a second pressure region, and a piston which is capable of moving in a movement region and which is movable depending on a pressure difference between the first and second pressure region. A damping device is provided which, in the event of a movement of the piston in the direction of the second pressure region, provides damping with respect to the movement of the piston in a section of the movement region, wherein the damping is adjustable.Type: ApplicationFiled: February 3, 2014Publication date: May 22, 2014Applicant: ABB Technology AGInventors: Thomas BRENNEIS, Matthias SCHMIDT, Henrik LOHRBERG, Frank FIEDLER, Bruno GEHLERT, Roland PALM
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Publication number: 20120193201Abstract: A hydromechanical stored-energy spring mechanism is provided for operating at least one switching contact of a circuit breaker, for example, in a high-voltage switching system. The hydromechanical stored-energy spring mechanism includes a hydraulically operated close-open (CO) delay circuit configured to delay triggering of a switching process of the circuit breaker, and an electromechanical actuator provided in place of a hydraulic operation of the CO delay circuit. The electromechanical actuator generates a mechanical time delay or acceleration over an extended temperature range.Type: ApplicationFiled: February 3, 2012Publication date: August 2, 2012Applicant: ABB Technology AGInventors: Jörg KNOSPE, Henrik Lohrberg, Joachim Eggers, Franz-Josef Körber, Thomas Brenneis
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Publication number: 20110132187Abstract: Exemplary embodiments are directed to a hydraulic stored-energy spring mechanism for a high voltage circuit breaker. The spring mechanism includes a working cylinder situated in a working cylinder housing, at least one spring and at least one compression piston. The compression piston is slidably displaceable in a storage cylinder. The at least one storage spring pressurizes fluid located in the storage piston via the compression piston. The storage spring is held in a form-fitting manner by a support tube unit in the preloaded state.Type: ApplicationFiled: January 7, 2011Publication date: June 9, 2011Applicant: ABB Technology AGInventor: Henrik LOHRBERG
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Patent number: 7757713Abstract: Hydraulic valve having a valve body and housing, which has a first, second and third cutout. A hydraulic medium is fed via the first cutout. The hydraulic medium is fed to a pressure consumer via the second cutout and to a pressure sink via the third cutout. The valve body moves to and fro between two end positions. From a second end position, the hydraulic medium passes from the first to the second cutout. In a first end position, the hydraulic medium passes from the second to the third cutout. Owing to the valve body, a constant flow cross section for the hydraulic medium, released by the first cutout, arises during a switching operation from the first into the second end position in a fixed time span, resulting in a maximum flow cross section being achieved when the valve body is in the second end position.Type: GrantFiled: December 21, 2006Date of Patent: July 20, 2010Assignee: ABB Technology AGInventors: Henrik Lohrberg, Daniel J. Wolfe
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Patent number: 7652221Abstract: The disclosure relates to a contact drive arrangement for the movement of at least one contact in high-voltage switchgear systems having a contact drive and having an auxiliary switch, which has at least two auxiliary contacts. The contact drive works together with the at least one contact and with a first auxiliary contact. Furthermore, a delay drive is connected functionally in parallel with the contact drive, and the delay drive works together with a second auxiliary contact. The first and second auxiliary contact are electrically connected in series. In addition, the delay drive has a damping element, and by means of the damping element the time for a switching operation is extended in comparison with the time for a switching operation with the contact drive.Type: GrantFiled: December 5, 2007Date of Patent: January 26, 2010Assignee: ABB Technology AGInventors: Henrik Lohrberg, Joachim Eggers
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Publication number: 20090020508Abstract: The disclosure relates to a contact drive arrangement for the movement of at least one contact in high-voltage switchgear systems having a contact drive and having an auxiliary switch, which has at least two auxiliary contacts. The contact drive works together with the at least one contact and with a first auxiliary contact. Furthermore, a delay drive is connected functionally in parallel with the contact drive, and the delay drive works together with a second auxiliary contact. The first and second auxiliary contact are electrically connected in series. In addition, the delay drive has a damping element, and by means of the damping element the time for a switching operation is extended in comparison with the time for a switching operation with the contact drive.Type: ApplicationFiled: December 5, 2007Publication date: January 22, 2009Applicant: ABB TECHNOLOGY AGInventors: Henrik Lohrberg, Joachim Eggers
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Publication number: 20070144596Abstract: Hydraulic valve (10) having a valve body (12) in a valve housing (16), which has a first (18), a second (20) and a third (22) cutout. A hydraulic medium can be fed via the first cutout (18), the hydraulic medium can be fed to a pressure consumer via the second cutout (20), and the hydraulic medium can be fed to a pressure sink via the third cutout (22). The valve body (12) moves to and fro between two end positions, in which case, in the first end position, the hydraulic medium passes from the first (18) to the second cutout (20), and, in the second end position, the hydraulic medium passes from the second (20) to the third cutout (22).Type: ApplicationFiled: December 21, 2006Publication date: June 28, 2007Applicant: ABB Technology AGInventors: Henrik Lohrberg, Daniel Wolfe
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Publication number: 20050059244Abstract: The invention relates to a method for carrying out a chemical reaction, in particular for carrying out a gas-gas or gas-ions reaction, in which, in the absence of a substance catalytically active for the corresponding chemical reaction, an educt or educts is(are) introduced between at least two electric conductors, as well as at the electric conductors an optionally adjustable voltage is applied, through the electric field generated in this way the chemical reaction is initiated and/or the rate of the chemical reaction is increased as well as allowed to proceed and the substance quantity of the product(s) formed is maintained non-proportional to a charge quantity optionally flowing between the electric conductors.Type: ApplicationFiled: November 26, 2002Publication date: March 17, 2005Inventors: Karl Lohrberg, Dirk Lohrberg, Henrik Lohrberg