Patents by Inventor Martin Hecker
Martin Hecker 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: 9309333Abstract: An integrated process for the solution polymerization and subsequent halogenation of butyl rubber in a common medium is disclosed. The process comprises providing a solution polymerization reactor containing a C6 medium mixed with a monomer mixture comprising at least an isoolefin monomer and a multiolefin monomer in a mass ratio of monomer mixture to medium of from 61:39 to 80:20. Once polymerized, residual unreacted monomer mixture is separated from the rubber solution using a distillation process. The residual monomers may then be purified and recycled back into the reactor. The separated rubber solution is then halogenated. The process obviates the need for separating the rubber from the medium following polymerization, then re-dissolving it in another solvent for halogenation, thereby saving energy cost. The process optionally employs heat exchangers for the reactor feed streams to further reduce energy consumption.Type: GrantFiled: July 9, 2009Date of Patent: April 12, 2016Assignee: LANXESS International S.A.Inventors: Hanns-Ingolf Paul, Rolf Feller, John Lovegrove, Adam Gronowski, Andreas Jupke, Martin Hecker, Jörg Kirchhoff, Rainer Bellinghausen
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Publication number: 20110257342Abstract: An integrated process for the solution polymerization and subsequent halogenation of butyl rubber in a common medium is disclosed. The process comprises providing a solution polymerization reactor containing a C6 medium mixed with a monomer mixture comprising at least an isoolefin monomer and a multiolefin monomer in a mass ratio of monomer mixture to medium of from 61:39 to 80:20. Once polymerized, residual unreacted monomer mixture is separated from the rubber solution using a distillation process. The residual monomers may then be purified and recycled back into the reactor. The separated rubber solution is then halogenated. The process obviates the need for separating the rubber from the medium following polymerization, then re-dissolving it in another solvent for halogenation, thereby saving energy cost. The process optionally employs heat exchangers for the reactor feed streams to further reduce energy consumption.Type: ApplicationFiled: July 9, 2009Publication date: October 20, 2011Applicant: LANXESS INTERNATIONAL SAInventors: Hanns-Ingolf Paul, Rolf Feller, John George Arnold Lovegrove, Adam Gronowski, Andreas Jupke, Martin Hecker, Jörg Kirchhoff, Rainer Bellinghausen
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Patent number: 6491027Abstract: Method of driving a capacitive actuator of a fuel injection valve of an internal combustion engine for achieving a constant stroke of the actuator, in which the amounts of energy that are supplied to the actuator are determined in dependence on the fuel pressure acting on the actuator.Type: GrantFiled: September 25, 2000Date of Patent: December 10, 2002Assignee: Siemens AktiengesellschaftInventors: Hellmut Freudenberg, Hartmut Gerken, Martin Hecker, Christian Hoffmann, Richard Pirkl
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Patent number: 6472796Abstract: A method for controlling a capacitive actuator includes the steps of determining an energy applied to an actuator, measuring an actuator voltage present at the actuator, and inferring a functional state of the actuator by using the energy and the actuator voltage. A capacitive actuator is fed energy and the actuator voltage present at the actuator is measured. The energy and the comparison of the actuator voltage with reference values are used to infer a functional state, for example, either faults or correct function of the actuator or injection valve. Furthermore, the actuator voltage is used to infer an actuator stroke. The method is based on actuator characteristics.Type: GrantFiled: February 25, 2000Date of Patent: October 29, 2002Assignee: Siemens AktiengesellschaftInventors: Christian Hoffmann, Hellmut Freudenberg, Hartmut Gerken, Martin Hecker, Richard Pirkl
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Patent number: 6441535Abstract: A control element, in particular a piezoelectrically operated fuel injection valve in an internal combustion engine, is charged, in order to compensate for stochastic reactions in the internal combustion engine, with a constant nominal voltage applied to a series circuit that includes a charge capacitor and a charge reversal capacitor, and it is discharged into the charge reversal capacitor to a prescribed voltage value. The remaining residual charge of the control element is charged into the charge capacitor via a limiter path.Type: GrantFiled: January 16, 2001Date of Patent: August 27, 2002Assignee: Siemens AktiengesellschaftInventors: Hellmut Freudenberg, Hartmut Gerken, Martin Hecker, Christian Hoffmann, Richard Pirkl, Günther Riedel
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Patent number: 6366868Abstract: A method of diagnosing an actuator includes supplying a predeterminable amount of energy to an actuator through a charge-reversal circuit. Faulty functional statuses of the actuator and its supply lines and/or its drive circuits, short- or long-term interruptions, short-circuits within the actuator or its supply lines, or excessively low capacitance values may be deduced from a discrepancy between reference values and determined variables including actuator voltage, actuator current, and actuator charge. A short-circuit of an electrical connection within the actuator or an electrical connection between the drive circuit and the actuator can be deduced if the actuator voltage is less than a lower voltage value. An interruption in the electrical connection within is the actuator or an electrical connection between the drive circuit and the actuator may be deduced if an actuator peak current is less than a lower current value. An apparatus for performing the method is also provided.Type: GrantFiled: March 30, 2001Date of Patent: April 2, 2002Assignee: Siemens Aktiengesellschaft AGInventors: Hellmut Freudenberg, Hartmut Gerken, Martin Hecker, Christian Hoffmann, Richard Pirkl, Walter Schrod
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Patent number: 6333585Abstract: A capacitive actuator (P), especially for a piezoelectrically operated injection valve for an internal combustion engine, is short-circuited by a discharge switch (M) after an actuation, the controlling input of the discharge switch (M) being connected to the actuator (P) so that the discharge switch (M) in case of a failure of the external control, is automatically rendered conductive by the actuator voltage (UP) and the actuator (P) is therefore automatically discharged.Type: GrantFiled: August 15, 2000Date of Patent: December 25, 2001Assignee: Siemens AktiengesellschaftInventors: Christian Hoffmann, Hellmut Freudenberg, Hartmut Gerken, Martin Hecker, Richard Pirkl
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Publication number: 20010041751Abstract: The present invention relates to a process for polymerizing a mixture of one or more monovinyl monomers and one or more polyvinyl monomers in the presence ofType: ApplicationFiled: June 4, 2001Publication date: November 15, 2001Inventors: Ralf-Jurgen Born, Olaf Halle, Martin Hecker, Hans-Ulrich Moritz
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Publication number: 20010039484Abstract: A method of diagnosing an actuator includes supplying a predeterminable amount of energy to an actuator through a charge-reversal circuit. Faulty functional statuses of the actuator and its supply lines and/or its drive circuits, short- or long-term interruptions, short-circuits within the actuator or its supply lines, or excessively low capacitance values may be deduced from a discrepancy between reference values and determined variables including actuator voltage, actuator current, and actuator charge. A short-circuit of an electrical connection within the actuator or an electrical connection between the drive circuit and the actuator can be deduced if the actuator voltage is less than a lower voltage value. An interruption in the electrical connection within the actuator or an electrical connection between the drive circuit and the actuator may be deduced if an actuator peak current is less than a lower current value. An apparatus for performing the method is also provided.Type: ApplicationFiled: March 30, 2001Publication date: November 8, 2001Inventors: Hellmut Freudenberg, Hartmut Gerken, Martin Hecker, Christian Hoffmann, Richard Pirkl, Walter Schrod
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Publication number: 20010020804Abstract: A control element, in particular a piezoelectrically operated fuel injection valve in an internal combustion engine, is charged, in order to compensate for stochastic reactions in the internal combustion engine, with a constant nominal voltage applied to a series circuit that includes a charge capacitor and a charge reversal capacitor, and it is discharged into the charge reversal capacitor to a prescribed voltage value. The remaining residual charge of the control element is charged into the charge capacitor via a limiter path.Type: ApplicationFiled: January 16, 2001Publication date: September 13, 2001Inventors: Hellmut Freudenberg, Hartmut Gerken, Martin Hecker, Christian Hoffmann, Richard Pirkl, Gunther Riedel
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Patent number: 6212053Abstract: The device drives one or more capacitive actuators with a control circuit. The device has a series circuit with a charging capacitor, a discharging capacitor, an electric coil, and the one or more actuators each with an associated selector switch. A discharging switch has a drain terminal connected to the node point between the two capacitors, and a source terminal connected via decoupling diodes to the drain terminals of the selector switches.Type: GrantFiled: December 6, 1999Date of Patent: April 3, 2001Assignee: Siemens AktiengesellschaftInventors: Christian Hoffmann, Hellmut Freudenberg, Hartmut Gerken, Martin Hecker, Richard Pirkl
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Patent number: 6198199Abstract: A short circuit between a negative pole GND and a capacitive actuator in a circuit with a charging capacitor, a recharging capacitor, a recharging coil and a selector switch is determined by calculating a value corresponding to the quantity of charge QL flowing off from the recharging capacitor during a charging operation. The quantity of charge is compared with an integral of current i flowing during the charging operation via the selector switch assigned to the actuator. A short circuit of the actuator to the negative pole is diagnosed when the integral is smaller than k*QL (k<1).Type: GrantFiled: September 8, 1999Date of Patent: March 6, 2001Assignee: Siemens AktiengesellschaftInventors: Christian Hoffmann, Hellmut Freudenberg, Hartmut Gerken, Martin Hecker, Richard Pirkl
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Patent number: 6133714Abstract: A method of driving at least one capacitive actuator with a charge voltage. From a charge quantity .DELTA.Q supplied to the actuator and from the actuator voltage U.sub.p applied to the actuator after the charging operation is terminated, the actuator capacitance is calculated by the equation C.sub.p =.DELTA.Q/U.sub.p. From these values, the energy E.sub.actual =0.5*C.sub.p *U.sub.p.sup.2 =0.5*.DELTA.Q*U.sub.p is calculated. The charge voltage is regulated such that the energy actually supplied is equivalent to a specified desired value.Type: GrantFiled: December 6, 1999Date of Patent: October 17, 2000Assignee: Siemens AktiengesellschaftInventors: Christian Hoffmann, Hellmut Freudenberg, Manfred Weigl, Hartmut Gerken, Martin Hecker, Richard Pirkl
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Patent number: 6119655Abstract: A device for regulating a pressure in a high pressure accumulator of a fuel injection system includes a pressure adjusting element which has a shut-off element and an electromagnetic drive actuating the shut-off element. A first regulating device is connected to the pressure adjusting element and compares a pressure value obtained in the high pressure accumulator with a given setpoint pressure value. A drive signal with a setpoint current value for the electromagnetic drive is determined as a function of the comparison. A second regulating device is connected downstream of the first regulating device for comparing a current value of a current flowing through the electromagnetic drive with the setpoint current value and readjusting the current value in response to a deviation between the current value and the setpoint current value. A method for regulating a pressure in a high pressure accumulator is also provided.Type: GrantFiled: September 23, 1999Date of Patent: September 19, 2000Assignee: Siemens AktiengesellschaftInventors: Dirk Heinitz, Benno Larisch, Martin Hecker
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Patent number: 6121715Abstract: A capacitive control element is charged with a defined charging voltage Uc. From a stored mapping KF, the instantaneous control element capacitance Cp is determined from the charge voltage Uc and a control element voltage Up. In addition, energy E supplied to the control element is determined from the charge voltage Uc and the control element capacitance Cp. According to a deviation of energy E fed to the control element from a stipulated amount of energy Ev, the charge voltage Uc for a next drive process of the control element is regulated. The same process occurs for additional control elements.Type: GrantFiled: June 18, 1999Date of Patent: September 19, 2000Assignee: Siemens AktiengesellschaftInventors: Christian Hoffmann, Hellmut Freudenberg, Hartmut Gerken, Martin Hecker, Richard Pirkl
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Patent number: 6081062Abstract: In a driving operation, a capacitive actuator is charged from a series circuit of two capacitors having a charging voltage. An actuator voltage established at the actuator is controlled to a prescribed desired value in a course of a subsequent driving operation; the same procedure occurs for further actuators.Type: GrantFiled: June 18, 1999Date of Patent: June 27, 2000Assignee: Siemens AktiengesellschaftInventors: Christian Hoffmann, Hellmut Freudenberg, Hartmut Gerken, Martin Hecker, Richard Pirkl
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Patent number: 6078198Abstract: A power MOSFET switch is connected in parallel to a capacitive actuator for the purpose of protecting the actuator against over-voltage. The protective power MOSFET switch is rendered conductive by a supplemental circuit when the actuator voltage exceeds a predetermined threshold limit voltage or when the control circuit emits a corresponding signal.Type: GrantFiled: March 10, 1998Date of Patent: June 20, 2000Assignee: Siemens AktiengesellschaftInventors: Hartmut Gerken, Ralf Forster, Martin Hecker, Richard Pirkl, Christian Hoffmann, Hellmut Freudenberg
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Patent number: 6060814Abstract: A device for driving at least one capacitive actuator contains two capacitors C1 and C2 connected in parallel. The two parallel-connected capacitors C1, C2 are charged to an output voltage U.sub.SNT of a voltage source SNT. The actuator is charged with a voltage U.sub.C1+C2 =2*U.sub.SNT by the capacitors, and thereafter discharged into the capacitors, which are again connected in parallel and are subsequently recharged to the output voltage U.sub.SNT of the voltage source SNT.Type: GrantFiled: February 16, 1999Date of Patent: May 9, 2000Assignee: Siemens AktiengesellschaftInventors: Christian Hoffmann, Hellmut Freudenberg, Hartmut Gerken, Martin Hecker, Richard Pirkl
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Patent number: 6016040Abstract: A device for driving at least one capacitive actuator contains a charge capacitor C1 and a discharge capacitor C2. According to the method, the actuator is charged with a desired voltage U.sub.s by the capacitors C1+C2 connected in series, and is then discharged into the discharge capacitor C2. The charge capacitor is then recharged to a voltage U.sub.C1 =U.sub.s -U.sub.C2 by a voltage source which can be regulated.Type: GrantFiled: February 16, 1999Date of Patent: January 18, 2000Assignee: Siemens AktiengesellschaftInventors: Christian Hoffmann, Hellmut Freudenberg, Hartmut Gerken, Martin Hecker, Richard Pirkl
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Patent number: RE38470Abstract: In a driving operation, a capacitive actuator is charged from a series circuit of two capacitors having a charging voltage. An actuator voltage established at the actuator is controlled to a prescribed desired value in a course of a subsequent driving operation; the same procedure occurs for further actuators.Type: GrantFiled: April 30, 2001Date of Patent: March 23, 2004Assignee: Siemens AktiengesellschaftInventors: Christian Hoffmann, Hellmut Freudenberg, Hartmut Gerken, Martin Hecker, Richard Pirkl