Patents by Inventor Hans Peter Kristensen
Hans Peter Kristensen 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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Publication number: 20110114357Abstract: A protective cover arrangement (1) for a first electrical unit, e.g. a starter unit (3), mountable on a second electrical unit, e.g. a compressor (2). The protective cover arrangement (1) comprises an outer cover (5) and an inner cover (6). The outer cover (5) comprises mounting parts (8) adapted to cooperate with mounting parts (10) on the second electrical unit in order to mount the outer cover (5) on the second electrical unit. The inner cover (6) is sized and shaped to fit inside the outer cover (5), and it is adapted to accommodate a first electrical unit in an interior part (7). The inner cover (6) comprises an opening (12) allowing electrical connectors (4) to pass from the second electrical unit to the interior part (7), thereby providing electrical connection between the first electrical unit and the second electrical unit.Type: ApplicationFiled: January 24, 2011Publication date: May 19, 2011Applicant: Danfoss Compressors GmbHInventors: Kristoffer Riemann Hansen, Dirk Homuth, Hans Peter Kristensen
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Patent number: 7935888Abstract: A protective cover arrangement (1) for a first electrical unit, e.g. a starter unit (3), mountable on a second electrical unit, e.g. a compressor (2). The protective cover arrangement (1) comprises an outer cover (5) and an inner cover (6). The outer cover (5) comprises mounting parts (8) adapted to cooperate with mounting parts (10) on the second electrical unit in order to mount the outer cover (5) on the second electrical unit. The inner cover (6) is sized and shaped to fit inside the outer cover (5), and it is adapted to accommodate a first electrical unit in an interior part (7). The inner cover (6) comprises an opening (12) allowing electrical connectors (4) to pass from the second electrical unit to the interior part (7), thereby providing electrical connection between the first electrical unit and the second electrical unit.Type: GrantFiled: August 5, 2008Date of Patent: May 3, 2011Assignee: Danfoss Compressors GmbHInventors: Kristoffer Riemann Hansen, Dirk Homuth, Hans Peter Kristensen
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Patent number: 7777438Abstract: Motor start circuit for an induction motor-with a main winding and an auxiliary winding having two end connections supplied with current via current supply connections, and with a start circuit device serving the purpose of stopping the current flow through the auxiliary winding after the start of the motor, and being connected via a conductor to a control device connected between the current supply connections, and with a preset timer device interacting with the start circuit device to stop the current flow through the auxiliary winding, as soon as a predetermined period after the start of the current flow has lapsed. With the purpose of optimizing the motor start circuit, a voltage presetting device, with which a predetermined voltage value can be set, the start circuit device being disconnected if this value is exceeded, and a period duration presetting device, are connected to or integrated in the control device.Type: GrantFiled: July 11, 2007Date of Patent: August 17, 2010Assignee: Danfoss Compressors GmbHInventors: Claus Schmidt, Hans Peter Kristensen
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Patent number: 7777992Abstract: Motor start circuit for an induction motor, particularly a single-phase AC induction motor, with a main winding (4) and an auxiliary winding (5), which are supplied with current, particularly alternating current, via current supply connections (24, 25), and with a start switching device (15) serving the purpose of interrupting the current flow through the auxiliary winding (5) after the start of the motor, the start switching device (15) being connected to a control device (20) via a connector (18), the control device (20) being connected between the current supply connections (24, 25), and with a winding protection switch (28), which is normally closed and which opens on the occurrence of a fault. The invention is characterized in that the control device (20) is connected to the winding protection switch (28) via at least one further connector (22, 17), preferably via at least one further connector (22, 17) and the auxiliary winding (5).Type: GrantFiled: November 6, 2007Date of Patent: August 17, 2010Assignee: Danfoss Compressors GmbHInventors: Claus Schmidt, Hans Peter Kristensen
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Patent number: 7630180Abstract: The invention concerns a motor starter circuit for an induction motor, particularly a single-phase AC induction motor, with a main winding (4) and an auxiliary winding (5) supplied with current, particularly AC, via current supply connections (24, 25), and with a starter switch arrangement (15), which serves the purpose of interrupting the current flow through the auxiliary winding (5) after the start of the motor, the starter switch arrangement (15) interacting with a measuring arrangement serving the purpose of measuring the voltage across the auxiliary winding (5).Type: GrantFiled: April 26, 2007Date of Patent: December 8, 2009Assignee: Danfoss Compressors GmbHInventors: Claus Schmidt, Hans Peter Kristensen
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Publication number: 20090065233Abstract: A protective cover arrangement (1) for a first electrical unit, e.g. a starter unit (3), mountable on a second electrical unit, e.g. a compressor (2). The protective cover arrangement (1) comprises an outer cover (5) and an inner cover (6). The outer cover (5) comprises mounting parts (8) adapted to cooperate with mounting parts (10) on the second electrical unit in order to mount the outer cover (5) on the second electrical unit. The inner cover (6) is sized and shaped to fit inside the outer cover (5), and it is adapted to accommodate a first electrical unit in an interior part (7). The inner cover (6) comprises an opening (12) allowing electrical connectors (4) to pass from the second electrical unit to the interior part (7), thereby providing electrical connection between the first electrical unit and the second electrical unit.Type: ApplicationFiled: August 5, 2008Publication date: March 12, 2009Applicant: DANFOSS COMPRESSORS GMBHInventors: Kristoffer Riemann Hansen, Dirk Homuth, Hans Peter Kristensen
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Publication number: 20080225447Abstract: Motor start circuit for an induction motor, particularly a single-phase AC induction motor, with a main winding (4) and an auxiliary winding (5), which are supplied with current, particularly alternating current, via current supply connections (24, 25), and with a start switching device (15) serving the purpose of interrupting the current flow through the auxiliary winding (5) after the start of the motor, the start switching device (15) being connected to a control device (20) via a connector (18), the control device (20) being connected between the current supply connections (24, 25), and with a winding protection switch (28), which is normally closed and which opens on the occurrence of a fault. The invention is characterised in that the control device (20) is connected to the winding protection switch (28) via at least one further connector (22, 17), preferably via at least one further connector (22, 17) and the auxiliary winding (5).Type: ApplicationFiled: November 6, 2007Publication date: September 18, 2008Applicant: DANFOSS COMPRESSORS GMBHInventors: Claus Schmidt, Hans Peter Kristensen
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Publication number: 20080018293Abstract: Motor start circuit for an induction motor, particularly a single phase AC induction motor, with a main winding (4) and an auxiliary winding (5) having two end connections (6, 7) supplied with current, mainly AC, via current supply connections (34, 35), and with a start circuit device (15) serving the purpose of stopping the current flow through the auxiliary winding (5) after the start of the motor, and being connected via a conductor (18) to a control device (20) connected between the current supply connections (34, 35), and with a preset timer device interacting with the start circuit device (15) to stop the current flow through the auxiliary winding (5), as soon as a predetermined period after the start of the current flow has lapsed.Type: ApplicationFiled: July 11, 2007Publication date: January 24, 2008Applicant: Danfoss Compressors GmbHInventors: Claus Schmidt, Hans Peter Kristensen
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Publication number: 20070253133Abstract: The invention concerns a motor starter circuit for an induction motor, particularly a single-phase AC induction motor, with a main winding (4) and an auxiliary winding (5) supplied with current, particularly AC, via current supply connections (24, 25), and with a starter switch arrangement (15), which serves the purpose of interrupting the current flow through the auxiliary winding (5) after the start of the motor, the starter switch arrangement (15) interacting with a measuring arrangement serving the purpose of measuring the voltage across the auxiliary winding (5).Type: ApplicationFiled: April 26, 2007Publication date: November 1, 2007Applicant: Danfoss Compressors GmbHInventors: Claus Schmidt, Hans Peter Kristensen