Patents by Inventor Peter Pfaff
Peter Pfaff 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: 10112220Abstract: A high-pressure cleaning appliance is provided, including a housing having a motor and a pump, driven by the motor, arranged therein, and including at least two rotatably mounted running wheels, a push bar movable back and forth between a parking position and an operating position, and a locking device for releasably locking the push bar, the locking device including an actuating member which is coupled by at least one coupling member to at least one locking member which interacts with the push bar and is movable from a locking position to a release position by actuating the actuating member. So that the high-pressure cleaning appliance can be assembled more cost-effectively and more easily, the locking device includes a prefabricated constructional unit which forms the actuating member, the at least one coupling member and the at least one locking member and is movably mounted on or in the housing.Type: GrantFiled: May 8, 2015Date of Patent: October 30, 2018Assignee: Alfred Kärcher SE & Co. KGInventor: Peter Pfaff
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Patent number: 9283596Abstract: The invention relates to a high-pressure cleaning appliance, comprising a heatable heat exchanger for heating a liquid that is dischargeable by the high-pressure cleaning appliance, a motor having a drive shaft that defines a drive axis, a pump unit for increasing the liquid pressure, a blower wheel for generating a combustion air flow, and a fuel pump for delivering a fuel to the heat exchanger, wherein the pump unit, the blower wheel, and the fuel pump are disposed along the drive axis and are drivable by means of the drive shaft and form an assembly together with the motor. In order to fit the assembly to the appliance in a simplified manner while achieving a more compact design for appliance, the appliance comprises a half-shell housing having a first half-shell and a second half-shell which between them define an accommodating chamber in which the assembly is at least partially accommodated.Type: GrantFiled: March 30, 2012Date of Patent: March 15, 2016Assignee: Alfred Kaercher GmbH & Co. KGInventors: Werner Schwab, Peter Pfaff
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Publication number: 20150239019Abstract: A high-pressure cleaning appliance is provided, including a housing having a motor and a pump, driven by the motor, arranged therein, and including at least two rotatably mounted running wheels, a push bar movable back and forth between a parking position and an operating position, and a locking device for releasably locking the push bar, the locking device including an actuating member which is coupled by at least one coupling member to at least one locking member which interacts with the push bar and is movable from a locking position to a release position by actuating the actuating member. So that the high-pressure cleaning appliance can be assembled more cost-effectively and more easily, the locking device includes a prefabricated constructional unit which forms the actuating member, the at least one coupling member and the at least one locking member and is movably mounted on or in the housing.Type: ApplicationFiled: May 8, 2015Publication date: August 27, 2015Inventor: Peter Pfaff
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Patent number: 9033258Abstract: In order to improve a high-pressure cleaning apparatus comprising a pump unit adapted to be driven by motor, a first connection element for detachable connection to a liquid supply conduit, said first connection element being connected to the suction side of the pump unit, and a second connection element for detachable connection to a high-pressure conduit, said second connection element being connected to the pressure side of the pump unit, such that it can be handled in a more user-friendly manner, the invention proposes that the first connection element and/or the second connection element be oriented in a direction facing upward away from a supporting surface for the high-pressure cleaning apparatus.Type: GrantFiled: January 18, 2012Date of Patent: May 19, 2015Assignee: Alfred Kaercher GmbH & Co. KGInventors: Werner Schwab, Peter Pfaff
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Patent number: 8555902Abstract: The invention relates to a high-pressure cleaning appliance, comprising a heatable heat exchanger for heating up a liquid dispensable by the high-pressure cleaning appliance, a blower with a flow channel connected thereto for supplying combustion air to the heat exchanger, and a setting member for setting the amount of combustion air suppliable to the heat exchanger, the setting member having a channel constriction section which is positionable in the flow channel and movable relative thereto for changing the free cross-sectional area of the flow channel. In order to develop a generic high-pressure cleaning appliance further so that the amount of combustion air suppliable to the heat exchanger can be better adjusted, it is proposed that the channel constriction section be configured so as to be slidingly displaceable relative to the flow channel.Type: GrantFiled: March 30, 2012Date of Patent: October 15, 2013Assignee: Alfred Kaercher GmbH & Co. KGInventors: Michael Boehm, Peter Pfaff, Werner Schwab
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Patent number: 8546591Abstract: The present invention relates to a process for the preparation of cis-2-(2-methylprop-1-enyl)-4-methyltetrahydropyran comprising the catalytic hydrogenation of 2-(2-methylprop-1-enyl)-4-methylenetetrahydropyran in the presence of hydrogen and a heterogeneous catalyst comprising ruthenium on a support and subsequently bringing the compounds obtained in this way into contact with a strongly acidic cation exchanger.Type: GrantFiled: December 17, 2008Date of Patent: October 1, 2013Assignee: BASF SEInventors: Lucia Koenigsmann, Juergen Schubert, Andreas Walch, Guenther Gottwald, Martin Kamasz, Ekkehard Schwab, Klaus-Peter Pfaff, Michael Slany
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Publication number: 20130074884Abstract: The invention relates to a high-pressure cleaning appliance, comprising a heatable heat exchanger for heating a liquid that is dischargeable by the high-pressure cleaning appliance, a motor having a drive shaft that defines a drive axis, a pump unit for increasing the liquid pressure, a blower wheel for generating a combustion air flow, and a fuel pump for delivering a fuel to the heat exchanger, wherein the pump unit, the blower wheel, and the fuel pump are disposed along the drive axis and are drivable by means of the drive shaft and form an assembly together with the motor. In order to fit the assembly to the appliance in a simplified manner while achieving a more compact design for appliance, the appliance comprises a half-shell housing having a first half-shell and a second half-shell which between them define an accommodating chamber in which the assembly is at least partially accommodated.Type: ApplicationFiled: March 30, 2012Publication date: March 28, 2013Applicant: Alfred Kaercher GmbH & Co. KGInventors: Werner Schwab, Peter Pfaff
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Publication number: 20120234365Abstract: The invention relates to a high-pressure cleaning appliance, comprising a heatable heat exchanger for heating up a liquid dispensable by the high-pressure cleaning appliance, a blower with a flow channel connected thereto for supplying combustion air to the heat exchanger, and a setting member for setting the amount of combustion air suppliable to the heat exchanger, the setting member having a channel constriction section which is positionable in the flow channel and movable relative thereto for changing the free cross-sectional area of the flow channel. In order to develop a generic high-pressure cleaning appliance further so that the amount of combustion air suppliable to the heat exchanger can be better adjusted, it is proposed that the channel constriction section be configured so as to be slidingly displaceable relative to the flow channel.Type: ApplicationFiled: March 30, 2012Publication date: September 20, 2012Applicant: Alfred Kaercher GmbH & Co. KGInventors: Michael Boehm, Peter Pfaff, Werner Schwab
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Publication number: 20120189471Abstract: In order to improve a high-pressure cleaning apparatus comprising a pump unit adapted to be driven by motor, a first connection element for detachable connection to a liquid supply conduit, said first connection element being connected to the suction side of the pump unit, and a second connection element for detachable connection to a high-pressure conduit, said second connection element being connected to the pressure side of the pump unit, such that it can be handled in a more user-friendly manner, the invention proposes that the first connection element and/or the second connection element be oriented in a direction facing upward away from a supporting surface for the high-pressure cleaning apparatus.Type: ApplicationFiled: January 18, 2012Publication date: July 26, 2012Applicant: Alfred Kaercher GmbH & Co. KGInventors: Werner Schwab, Peter Pfaff
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Publication number: 20100311988Abstract: The present invention relates to a process for the preparation of cis-2-(2-methylprop-1-enyl)-4-methyltetrahydropyran comprising the catalytic hydrogenation of 2-(2-methylprop-1-enyl)-4-methylenetetrahydropyran in the presence of hydrogen and a heterogeneous catalyst comprising ruthenium on a support and subsequently bringing the compounds obtained in this way into contact with a strongly acidic cation exchanger.Type: ApplicationFiled: December 17, 2008Publication date: December 9, 2010Applicant: BASF SEInventors: Lucia Koenigsmann, Juergen Schubert, Andreas Walch, Guenther Gottwald, Martin Kamasz, Ekkehard Schwab, Klaus-Peter Pfaff, Michael Slany
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Publication number: 20100222606Abstract: The present invention relates to a method of producing pure or enriched bisabolol by separating substance mixtures comprising bisabolol and farnesol by selective esterification of farnesol and subsequent distillative separation. The invention relates specifically to a method as specified above comprising the selective transesterification of mixtures comprising formyl-bisabolol and formyl-farnesol and subsequent distillative separation. The present invention furthermore relates to a method of producing farnesol esters.Type: ApplicationFiled: January 12, 2007Publication date: September 2, 2010Applicant: BASF SEInventors: Hansgeorg Ernst, Klaus-Peter Pfaff, Karl Beck, Jürgen Schubert, Günther Gottwald, Wolfgang Krause
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Patent number: 7718041Abstract: A process for obtaining oligomers of polytetrahydrofuran or of tetrahydrofuran copolymers from a methanolic crude product which contains polytetrahydrofuran or tetrahydrofuran copolymers and is obtained in the transesterification of the mono- and/or diesters of polytetrahydrofuran or tetrahydrofuran copolymers with methanol, which includes a) removing the majority of the methanol from the crude product in a first distillation stage, b) separating the resulting bottom product by distillation into a top fraction containing the oligomers of polytetrahydrofuran or of tetrahydrofuran copolymers, and polytetrahydrofuran or tetrahydrofuran copolymer, and c) condensing the oligomers of polytetrahydrofuran or of tetrahydrofuran copolymers out of the top fraction from stage b).Type: GrantFiled: June 19, 2004Date of Patent: May 18, 2010Assignee: BASF SEInventors: Volkmar Menger, Michael Schwarztrauber, Martin Haubner, Klaus-Peter Pfaff
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Patent number: 7622617Abstract: The present invention relates to a process for preparing ?-bisabolol, comprising the reaction of farnesol in the presence of a ketone, of a sulfonic acid and of a further strong acid.Type: GrantFiled: October 26, 2006Date of Patent: November 24, 2009Assignee: BASF SEInventors: Klemens Massonne, Klaus-Peter Pfaff, Juergen Schubert, Guenther Gottwald
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Publication number: 20080269530Abstract: The present invention relates to a process for preparing ?-bisabolol, comprising the reaction of farnesol in the presence of a ketone, of a sulfonic acid and of a further strong acid.Type: ApplicationFiled: October 26, 2006Publication date: October 30, 2008Applicant: BASF SEInventors: Klemens Massonne, Klaus-Peter Pfaff, Juergen Schubert, Guenther Gottwald
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Patent number: 7276573Abstract: The present invention provides a process for preparing mono- or diesters of polytetrahydrofuran or of tetrahydrofuran copolymers by polymerizing tetrahydrofuran in the presence of at least one telogen and/or of a comonomer over an acidic catalyst, wherein the polymerization reactor is started up using a mixture of polytetrahydrofuran, the mono- or diesters of polytetrahydrofuran and/or of the THF copolymers, tetrahydrofuran, any comonomer and at least one carboxylic acid and/or one carboxylic anhydride.Type: GrantFiled: September 4, 2003Date of Patent: October 2, 2007Assignee: BASF AktiengesellschaftInventors: Rolf Pinkos, Achim Gerstlauer, Martin Haubner, Stephan Schlitter, Stefan Käshammer, Klaus-Peter Pfaff
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Publication number: 20060266635Abstract: A process for obtaining oligomers of polytetrahydrofuran or of tetrahydrofuran copolymers from a methanolic crude product which contains polytetrahydrofuran or tetrahydrofuran copolymers and is obtained in the transesterification of the mono- and/or diesters of polytetrahydrofuran or tetrahydrofuran copolymers with methanol, which comprises a) removing the majority of the methanol from the crude product in a first distillation stage, b) separating the resulting bottom product by distillation into a top fraction comprising the oligomers of polytetrahydrofuran or of tetrahydrofuran copolymers, and polytetrahydrofuran or tetrahydrofuran copolymer, c) condensing the oligomers of polytetrahydrofuran or of tetrahydrofuran copolymers out of the top fraction from stage b).Type: ApplicationFiled: June 19, 2004Publication date: November 30, 2006Applicant: BASF AktiengesellschaftInventors: Volkmar Menger, Michael Schwarztrauber, Martin Haubner, Klaus-Peter Pfaff
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Patent number: 7098349Abstract: The invention relates to a process for the continuous preparation of THF by reaction of a 1,4-butanediol-containing reaction mixture over a heteropolyacid catalyst which has not been predried, wherein the reaction mixture comprises 2-(4-hydroxybutoxy)tetrahydrofuran.Type: GrantFiled: July 30, 2003Date of Patent: August 29, 2006Assignee: BASF AktiengesellschaftInventors: Rolf Pinkos, Stefan Käshammer, Volkmar Menger, Martin Haubner, Peter Groll, Stephan Schlitter, Klaus-Peter Pfaff
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Publication number: 20060122365Abstract: The invention relates to a process for the continuous preparation of THF by reaction of a 1,4-butanediol-containing reaction mixture over a heteropolyacid catalyst which has not been predried, wherein the reaction mixture comprises 2-(4-hydroxybutoxy)tetrahydrofuran.Type: ApplicationFiled: July 30, 2003Publication date: June 8, 2006Applicant: BASF AKTIENGESELLSCHAFTInventors: Rolf Pinkos, Stefan Kashammer, Volkmar Menger, Martin Haubner, Peter Groll, Stephan Schlitter, Klaus-Peter Pfaff
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Patent number: 6852869Abstract: In a process for preparing polytetrahydrofuran, tetrahydrofuran copolymers, diesters or monoesters of these polymers having a low color number, the polymers obtained by cationic polymerization of tetrahydrofuran are hydrogenated in the presence of a macroporous, supported heterogeneous catalyst comprising at least one metal of groups 7 to 10 of the Periodic Table of the Elements as active metal.Type: GrantFiled: July 24, 2001Date of Patent: February 8, 2005Assignee: BASF AktiengesellschaftInventors: Christoph Sigwart, Anton Meier, Michael Hesse, Volkmar Menger, Klaus-Peter Pfaff, Arthur Höhn, Lothar Franz
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Publication number: 20040024172Abstract: In a process for preparing polytetrahydrofuran, tetrahydrofuran copolymers, diesters or monoesters of these polymers having a low color number, the polymers obtained by cationic polymerization of tetrahydrofuran are hydrogenated in the presence of a macroporous, supported heterogeneous catalyst comprising at least one metal of subgroups VII [sic] to X [sic] of the Periodic Table of the Elements as active metal.Type: ApplicationFiled: February 6, 2003Publication date: February 5, 2004Inventors: Christoph Sigwart, Anton Meier, Michael Hesse, Volkmar Menger, Klaus-Peter Pfaff, Arthur Hohn, Lothar Franz