Patents by Inventor Bernhard Dehmer
Bernhard Dehmer 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: 11022111Abstract: A pump for pumping fluid, wherein the pump comprises a pump head comprising a working chamber, a piston assembly configured for reciprocating within the working chamber to thereby displace fluid, a pump base accommodating a piston actuator being mechanically lockable to the piston assembly in a working mode of the pump to thereby transmit drive energy to the piston assembly to reciprocate, and a locking/unlocking mechanism configured to, upon unfastening the pump head from the pump base, mechanically unlock the piston actuator from the piston assembly in a maintenance mode of the pump.Type: GrantFiled: February 27, 2015Date of Patent: June 1, 2021Assignee: Agilent Technologies, Inc.Inventors: Bernhard Dehmer, Arne Kurz, Lothar Mitzlaff
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Publication number: 20200263684Abstract: A fluid pump for pumping fluid in a sample separation device includes a pump body device, a piston arranged for conveying fluid in a reciprocable manner in the pump body device, a seal arranged fluid-sealingly in contact with and between the pump body device and the piston, and a supporting body, which is coupled to the seal for supporting the latter. The supporting body is arranged at the pump body device, thereby forming a bearing for the piston.Type: ApplicationFiled: December 15, 2016Publication date: August 20, 2020Inventors: Bernhard Dehmer, Andre Lichtenberger
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Patent number: 10385847Abstract: A pump for pumping fluid, wherein the pump includes a working chamber, a piston assembly configured for reciprocating within the working chamber to thereby displace fluid, a piston actuator being rigidly assembled with the piston assembly at least in a working mode of the pump to thereby transmit drive energy to the piston assembly to reciprocate along a common rigid axis of the piston-actuator-assembly, and a bearing arrangement bearing the piston assembly and the piston actuator in the pump so that the piston-actuator-assembly provided by the piston assembly and the piston actuator is capable of performing a pendulum-type compensation motion around a pendulum point at the piston actuator on the common rigid axis.Type: GrantFiled: January 27, 2015Date of Patent: August 20, 2019Assignee: Agilent Technologies, Inc.Inventors: Arne Kurz, Bernhard Dehmer, Lothar Mitzlaff
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Patent number: 10012621Abstract: A sealed fluidic component for use in a fluidic flow path is made by providing a composite material comprising a first material and a second material, wherein the first material and the second material are different PAEK materials with the first material having a lower melting point than the second material. The composite material is heated to provide a sealing by the first material.Type: GrantFiled: May 2, 2011Date of Patent: July 3, 2018Assignee: Agilent Technologies, Inc.Inventor: Bernhard Dehmer
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Patent number: 9803782Abstract: A fitting element, in particular for an HPLC application, is configured for providing a fluidic coupling of a tubing to a fluidic device. The fitting element comprises a gripping piece to exert—upon coupling of the tubing to the fluidic device—a grip force (G) between the fitting element and the tubing. The gripping piece comprises a hydraulic element configured to transform an axial force (S) into a hydraulic pressure (P) within the hydraulic element. The hydraulic pressure (P) in the hydraulic element causes the grip force (G).Type: GrantFiled: May 3, 2010Date of Patent: October 31, 2017Assignee: Agilent Technologies, Inc.Inventor: Bernhard Dehmer
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Publication number: 20170096999Abstract: A system for pumping liquid under high pressure includes a housing and a high pressure seal. The housing houses a pump assembly and a chamber assembly that includes a chamber for containing high pressure liquid. The seal separates high pressure area in the chamber assembly from low pressure area in the pump assembly. The seal includes a seal opening that receives a piston that moves axially to increase pressure on the liquid in the chamber; an active sealing area adjacent the chamber; a compressible sealing area adjacent the active sealing area; and a connection channel formed through the compressible sealing area between the seal opening and a leakage space formed between the housing and the high pressure seal. The connection channel conducts the liquid, leaked into the leakage space from the chamber, from the leakage space to the seal opening during operation of the piston, providing lubrication for the piston.Type: ApplicationFiled: August 8, 2014Publication date: April 6, 2017Inventor: Bernhard Dehmer
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Publication number: 20170009766Abstract: A pump for pumping fluid, wherein the pump includes a working chamber, a piston assembly configured for reciprocating within the working chamber to thereby displace fluid, a piston actuator being rigidly assembled with the piston assembly at least in a working mode of the pump to thereby transmit drive energy to the piston assembly to reciprocate along a common rigid axis of the piston-actuator-assembly, and a bearing arrangement bearing the piston assembly and the piston actuator in the pump so that the piston-actuator-assembly provided by the piston assembly and the piston actuator is capable of performing a pendulum-type compensation motion around a pendulum point at the piston actuator on the common rigid axis.Type: ApplicationFiled: January 27, 2015Publication date: January 12, 2017Inventors: Arne Kurz, Bernhard Dehmer, Lothar Mitzlaff
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Patent number: 9267630Abstract: A fitting for coupling a capillary to another component of a fluidic device is disclosed. The fitting includes a ferrule configured for enclosing a front part of the capillary and for contributing to a fluidic sealing between the fitting and the other component; a ferrule chuck configured for enclosing a back part of the capillary; and a housing configured for accommodating at least a part of the ferrule chuck and for pushing the ferrule chuck against the ferrule.Type: GrantFiled: January 7, 2013Date of Patent: February 23, 2016Assignee: Agilent Technologies, Inc.Inventor: Bernhard Dehmer
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Patent number: 9134335Abstract: A needle for handling a fluid in an analysis system is described. The needle includes a needle body made of a ceramic material and having a fluid conduit extending between a fitting end and a seat end. The fitting end is configured to be connected to a fitting and the seat end (308) being insertable into a seat. The needle body is tapering towards the fitting end. A fixing body is arranged on the needle body next to the fitting end for exerting an axial force when the needle body is connected to the fitting, and a slide-on element to be slid over the needle body so as to push the fixing body towards the fitting end.Type: GrantFiled: November 30, 2011Date of Patent: September 15, 2015Assignee: Agilent Technologies, Inc.Inventors: Bernhard Dehmer, Joachim-Richard Wagner
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Publication number: 20150240804Abstract: A pump for pumping fluid, wherein the pump comprises a pump head comprising a working chamber, a piston assembly configured for reciprocating within the working chamber to thereby displace fluid, a pump base accommodating a piston actuator being mechanically lockable to the piston assembly in a working mode of the pump to thereby transmit drive energy to the piston assembly to reciprocate, and a locking/unlocking mechanism configured to, upon unfastening the pump head from the pump base, mechanically unlock the piston actuator from the piston assembly in a maintenance mode of the pump.Type: ApplicationFiled: February 27, 2015Publication date: August 27, 2015Inventors: Bernhard Dehmer, Arne Kurz, Lothar Mitzlaff
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Publication number: 20130341260Abstract: A sealed fluidic component (280) for use in a fluidic flow path is made by providing a composite material (300) comprising a first material (305) and a second material (310), wherein the first material (305) and the second material (310) are different PAEK materials with the first material (305) having a lower melting point than the second material (310). The composite material (300) is heated in order to provide a sealing by the first material (305).Type: ApplicationFiled: May 2, 2011Publication date: December 26, 2013Applicant: Agilent Technologies, Inc.Inventor: Bernhard Dehmer
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Publication number: 20130134082Abstract: A fitting element (100), in particular for an HPLC application (10), is configured for providing a fluidic coupling of a tubing (102) to a fluidic device (103). The fitting element (100) comprises a gripping piece (108) to exert—upon coupling of the tubing (102) to the fluidic device (103)—a grip force (G) between the fitting element (100) and the tubing (102). The gripping piece (108) comprises a hydraulic element (170) configured to transform an axial force (S) into a hydraulic pressure (P) within the hydraulic element (170). The hydraulic pressure (P) in the hydraulic element (170) causes the grip force (G).Type: ApplicationFiled: May 3, 2010Publication date: May 30, 2013Applicant: AGILENT TECHNOLOGIES, INC.Inventor: Bernhard Dehmer
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Patent number: 8257586Abstract: A valve arrangement is disclosed for providing a switchable fluid connection between a fluid delivery system for driving a mobile phase and a stationary phase adapted for separating compounds of a sample fluid comprised in the mobile phase.Type: GrantFiled: July 4, 2007Date of Patent: September 4, 2012Assignee: Agilent Technologies, Inc.Inventor: Bernhard Dehmer
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Publication number: 20120164026Abstract: A needle (300) for handling a fluid in an analysis system (10), the needle (300) comprising a needle body (302) made of a ceramic material and having a fluid conduit (304) extending between a fitting end (306) and a seat end (308), the fitting end (306) being connectable to a fitting (402) and the seat end (308) being insertable into a seat (602), wherein the needle body (302) is tapering, particularly conically tapering, towards the fitting end (306), a fixing body (310) arranged on the needle body (302) next to the fitting end (306) for exerting an axial force when the needle body (302) is connected to the fitting (402), and a slide-on element (312) to be slid over the needle body (302) so as to push the fixing body (310) towards the fitting end (306).Type: ApplicationFiled: November 30, 2011Publication date: June 28, 2012Applicant: AGILENT TECHNOLOGIES, INC.Inventors: Bernhard Dehmer, Joachim-Richard Wagner
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Publication number: 20110107823Abstract: A fitting for coupling a tubing to another component of a fluidic device, the fitting comprising a male piece having a front ferrule and a back ferrule both being slidable on the tubing, the male piece further having a first joint element configured slidably on the tubing, and a female piece having a recess configured for accommodating the front ferrule and the tubing and having a second joint element configured to be joinable to the first joint element, wherein the back ferrule is configured in such a manner that, upon joining the first joint element to the second joint element, the back ferrule exerts a pressing force on the front ferrule to provide a sealing between the front ferrule and the female piece, and the back ferrule exerts a grip force between the male piece and the tubing.Type: ApplicationFiled: July 4, 2008Publication date: May 12, 2011Applicant: AGILENT TECHNOLOGIES, INC.Inventor: Bernhard Dehmer
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Publication number: 20100187177Abstract: A valve arrangement is disclosed for providing a switchable fluid connection between a fluid delivery system for driving a mobile phase and a stationary phase adapted for separating compounds of a sample fluid comprised in the mobile phase.Type: ApplicationFiled: July 4, 2007Publication date: July 29, 2010Applicant: AGILENT TECHNOLOGIES, INC.Inventor: Bernhard Dehmer
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Patent number: 7473399Abstract: For dispensing volumes of liquids, a hinged septum has a flap inclined with respect to the longitudinal axis of a liquid channel. A deposition device deposits liquid on the flap, wherein the deposition device is arranged to contact the flap.Type: GrantFiled: January 14, 2004Date of Patent: January 6, 2009Assignee: Agilent Technologies, Inc.Inventor: Bernhard Dehmer
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Publication number: 20080168942Abstract: A device for transporting liquids and supporting crystal growth comprises a hollow space (20) in a body (1) with a first side. The hollow space comprises at least a first orifice (9) and is being adapted for generating a directed capillary ascension effect towards the at least first orifice (9).Type: ApplicationFiled: January 16, 2007Publication date: July 17, 2008Inventor: Bernhard Dehmer
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Publication number: 20060124180Abstract: The invention concerns a valve (20) for liquid separation, especially for analytical or preparative liquid chromatography, with a valve body (21) that has an inlet (31) and at least two outlets (32, 33) connected to it for a flow of liquid. In the valve body (21), there is a sealing element (45) consisting of shut-off surfaces to alternately shut off the outlets (32, 33) with shut-off surfaces (48, 49) facing away from each other in the shape of a cone segment or spherical segment.Type: ApplicationFiled: February 10, 2006Publication date: June 15, 2006Applicant: Agilent Technologies, Inc.Inventor: Bernhard Dehmer
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Patent number: 7036526Abstract: A valve for liquid separation, especially for analytical or preparative liquid chromatography, includes a valve body having an inlet and at least two outlets connected to the inlet for a flow of liquid. The valve body includes a sealing element having shut-off surfaces for alternately shutting off the outlets. The shut-off surfaces face away from each other and have the shape of a cone segment or spherical segment.Type: GrantFiled: September 29, 2000Date of Patent: May 2, 2006Assignee: Agilent Technologies, Inc.Inventor: Bernhard Dehmer