Patents by Inventor Arend Jan Willem Lammers
Arend Jan Willem Lammers 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: 9570246Abstract: Disconnector for switchgear, having a first contact position, in which a contact is between main and first terminals, and a second contact position, in which a contact is between the main and second terminal. The disconnector includes a connector body moveable in a first direction between the first and second positions and having an end extendable in a direction substantially perpendicular to the first direction for providing a contact force between the end and the first, second or main terminals, a first operating mechanism arranged to move the body between the first and second positions, and a second operating mechanism arranged to extend the end when the disconnector is in either the first or second contact positions, in which the end includes a conical inside surface and the second operating mechanism includes a first shaft having a first conically shaped end positioned inside the conical inside surface.Type: GrantFiled: July 29, 2014Date of Patent: February 14, 2017Assignee: EATON INDUSTRIES (NETHERLANDS) B.V.Inventors: Gerhardus Leonardus Nitert, Arend Jan Willem Lammers
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Publication number: 20140360847Abstract: Disconnector for switchgear, having a first contact position, in which a contact is between main and first terminals, and a second contact position, in which a contact is between the main and second terminal. The disconnector includes a connector body moveable in a first direction between the first and second positions and having an end extendable in a direction substantially perpendicular to the first direction for providing a contact force between the end and the first, second or main terminals, a first operating mechanism arranged to move the body between the first and second positions, and a second operating mechanism arranged to extend the end when the disconnector is in either the first or second contact positions, in which the end includes a conical inside surface and the second operating mechanism includes a first shaft having a first conically shaped end positioned inside the conical inside surface.Type: ApplicationFiled: July 29, 2014Publication date: December 11, 2014Applicant: EATON ELECTRIC B.V.Inventors: GERHARDUS LEONARDUS NITERT, AREND JAN WILLEM LAMMERS
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Patent number: 8890009Abstract: Disconnector for switchgear, having a first contact position, in which a contact is between main and first terminals, and a second contact position, in which a contact is between the main and second terminal. The disconnector includes a connector body moveable in a first direction between the first and second positions and having an end extendable in a direction substantially perpendicular to the first direction for providing a contact force between the end and the first, second or main terminals, a first operating mechanism arranged to move the body between the first and second positions, and a second operating mechanism arranged to extend the end when the disconnector is in either the first or second contact positions, in which the end includes a conical inside surface and the second operating mechanism includes a first shaft having a first conically shaped end positioned inside the conical inside surface.Type: GrantFiled: July 2, 2009Date of Patent: November 18, 2014Assignee: Eaton Industries (Netherlands) B.V.Inventors: Gerhardus Leonardus Nitert, Arend Jan Willem Lammers
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Patent number: 8648273Abstract: A switching installation including a gas-filled enclosure, an input conductor, an actuator and a short-circuit device. The actuator is arranged to actuate the short-circuit device upon the occurrence of a first arc in the enclosure. The short-circuit device creates, upon being actuated, a short-circuit through the solid insulation between the input conductor and the enclosure or a separate ground point. The actuator can be arranged to react on an increase in pressure in the enclosure upon the occurrence of the first arc. The gas can be air or SF6. The short-circuit device can create, upon being actuated, the short-circuit through a section of a solid cable insulation isolating the input conductor from the enclosure.Type: GrantFiled: September 25, 2009Date of Patent: February 11, 2014Assignee: Eaton Industries (Netherlands) B.V.Inventors: Gerhardus Leonardus Nitert, Arend Jan Willem Lammers
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Patent number: 8243453Abstract: Cooling arrangement for an electrically conductive element in an electrical installation. A casting body (3) is provided for electrically isolating the electrically conductive element (2). The casting body has an outer wall, part of which forms a contact surface 5 (5) for contact with a heat conducting surface (1) of the electrical installation. The outer wall of the casting body (3) is provided with an electrically conductive layer (4; 7) at its outer surface.Type: GrantFiled: April 16, 2008Date of Patent: August 14, 2012Assignee: Eaton Electric B.V.Inventors: Marcel Berend Paul Van Dijk, Arend Jan Willem Lammers, Gerard Cornelis Schoonenberg, Frederik Paul Schoten, Johannes Josephus Gerardus Van Thiel, Brad Robert Leccia
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Patent number: 8043129Abstract: Switching device assembly for providing a switching function in a medium voltage switchgear system. A switching device (10) is positioned in a switching device housing (11). Terminals (14, 15) are connected to the switching device (10) and receiving ends (24, 25) thereof are provided for receiving an interface surface (26, 27) of respective conductor terminals (20, 21) of the medium voltage switchgear. Mounting assemblies are arranged to releasably fasten the terminals (14, 15) to the respective conductor terminals (20, 21) in operation. A switching device drive unit (30), to which the switching device housing (11) is mounted, is provided with sealable access points (31, 32), through which the mounting assemblies are reachable when opened.Type: GrantFiled: September 8, 2008Date of Patent: October 25, 2011Assignee: Eaton Electric B.V.Inventors: Frederik Paul Schoten, Arend Jan Willem Lammers
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Publication number: 20110174779Abstract: A switching installation including a gas-filled enclosure having an input conductor, an actuator and an arc initiator. The actuator is arranged to actuate the arc initiator upon the occurrence of a first arc with a first length in the enclosure. The arc initiator creates, upon being actuated, a path for a second arc of a second length, the second length being shorter than the first length. The actuator can be arranged to react on an increase in pressure in the enclosure upon the occurrence of the first arc. The gas can be air or SF6. The arc initiator can create, upon being actuated, the path for the second arc through a section of a solid cable insulation isolating the input conductor from the enclosure.Type: ApplicationFiled: September 25, 2009Publication date: July 21, 2011Inventors: Arend Jan Willem Lammers, Gerardus Leonardus Nitert
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Publication number: 20110174780Abstract: A switching installation including a gas-filled enclosure, an input conductor, an actuator and a short-circuit device. The actuator is arranged to actuate the short-circuit device upon the occurrence of a first arc in the enclosure. The short-circuit device creates, upon being actuated, a short-circuit through the solid insulation between the input conductor and the enclosure or a separate ground point. The actuator can be arranged to react on an increase in pressure in the enclosure upon the occurrence of the first arc. The gas can be air or SF6. The short-circuit device can create, upon being actuated, the short-circuit through a section of a solid cable insulation isolating the input conductor from the enclosure.Type: ApplicationFiled: September 25, 2009Publication date: July 21, 2011Inventors: Gerhardus Leonardus Nitert, Arend Jan willem Lammers
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Publication number: 20110108398Abstract: Disconnector for switchgear, having a first contact position, in which a contact is between main and first terminals, and a second contact position, in which a contact is between the main and second terminal. The disconnector includes a connector body moveable in a first direction between the first and second positions and having an end extendable in a direction substantially perpendicular to the first direction for providing a contact force between the end and the first, second or main terminals, a first operating mechanism arranged to move the body between the first and second positions, and a second operating mechanism arranged to extend the end when the disconnector is in either the first or second contact positions, in which the end includes a conical inside surface and the second operating mechanism includes a first shaft having a first conically shaped end positioned inside the conical inside surface.Type: ApplicationFiled: July 2, 2009Publication date: May 12, 2011Inventors: Gerhardus Leonardus Nitert, Arend Jan Willem Lammers
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Publication number: 20100200379Abstract: Switching device assembly for providing a switching function in a medium voltage switchgear system. A switching device (10) is positioned in a switching device housing (11). Terminals (14, 15) are connected to the switching device (10) and receiving ends (24, 25) thereof are provided for receiving an interface surface (26, 27) of respective conductor terminals (20, 21) of the medium voltage switchgear. Mounting assemblies are arranged to releasably fasten the terminals (14, 15) to the respective conductor terminals (20, 21) in operation. A switching device drive unit (30), to which the switching device housing (11) is mounted, is provided with sealable access points (31, 32), through which the mounting assemblies are reachable when opened.Type: ApplicationFiled: September 8, 2008Publication date: August 12, 2010Inventors: Frederik Paul Schoten, Arend Jan Willem Lammers
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Publication number: 20100188819Abstract: Cooling arrangement for an electrically conductive element in an electrical installation. A casting body (3) is provided for electrically isolating the electrically conductive element (2). The casting body has an outer wall, part of which forms a contact surface 5 (5) for contact with a heat conducting surface (1) of the electrical installation. The outer wall of the casting body (3) is provided with an electrically conductive layer (4; 7) at its outer surface.Type: ApplicationFiled: April 16, 2008Publication date: July 29, 2010Applicant: EATON ELECTRIC B.V.Inventors: Marcel Berend Paul Van Dijk, Arend Jan Willem Lammers, Gerard Cornelis schoonenberg, Frederik Paul Schoten, Johannes Josephus Gerardus Van Thiel, Brad Robert Leccia
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Patent number: 7310221Abstract: A switching installation (5) having a circuit breaker (12), which is connected to a cable connection (33), and optionally a disconnector (14) for making or breaking a conductive connection between the cable connection (33) and a rail system (15), and an electrically insulating barrier (10). The electrically insulating barrier (10) surrounds at least the parts which are under electric voltage in operation from the circuit breaker (12) to the rail system (15), including a branch (18) leading to a rail (15) of the rail system, separately for each phase of the switching installation (5). Furthermore, inside the electrically insulating barrier (10) the switching installation may be provided with field-control means and/or voltage-sealing means (22, 25, 37).Type: GrantFiled: May 13, 2003Date of Patent: December 18, 2007Assignee: Eaton Electric N.V.Inventor: Arend Jan Willem Lammers
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Patent number: 7301426Abstract: Electromagnetic actuator for operating at least one movable contact of a switch into a switched-on position or a switched-off position. The electromagnetic actuator (1) has a first magnetic circuit for making a movable (3) and a fixed (4) pole body move towards one another and a second magnetic circuit, separate from the first magnetic circuit, with a permanent magnet (9) and a retaining plate (10). A switching-off coil (15) operates to counteract the magnetic field in the second magnetic circuit so that the actuator (1) can return to a switched-off position. In the axial direction of the actuator (1), the switching-off coil (15) is positioned Gloser to the retaining plate (10) than the permanent magnet (9), as a result of which more effective operation of the actuator is possible. Furthermore, the actuator is constructed from cylindrical elements that are easy to produce and to assemble.Type: GrantFiled: April 22, 2004Date of Patent: November 27, 2007Assignee: Eaton Electric B.V.Inventor: Arend Jan Willem Lammers
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Patent number: 7158369Abstract: Single phase or polyphase switchgear having one or more switches which are mounted with the aid of solid insulation such that they are insulated, as well as associated live components such as rail systems, connectors and the like. Both the switches and the associated live components are housed in a housing enveloping the switches and live components. The enveloping housing is filled with air having a low moisture content and the interior space thereof is sealed with respect to the exterior space around the enveloping housing in such a way that the air present in the housing is not contaminated and will not reach the dew point.Type: GrantFiled: April 9, 2002Date of Patent: January 2, 2007Assignee: Holec Holland N.V.Inventor: Arend Jan Willem Lammers
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Publication number: 20040130858Abstract: Single phase or polyphase switchgear comprising one or more switches which are mounted with the aid of solid insulation such that they are insulated, as well as associated live components such as rail systems, connectors and the like. Both the switches and the associated live components are housed in a housing enveloping said switches and live components. The enveloping housing is filled with air having a low moisture content and the interior space thereof is sealed with respect to the exterior space around the enveloping housing in such a way that the air present in the housing is not contaminated and will not reach the dew point.Type: ApplicationFiled: March 10, 2004Publication date: July 8, 2004Inventor: Arend Jan Willem Lammers
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Patent number: 6480368Abstract: Monitoring circuit for monitoring a voltage, comprising a coil, which is incorporated in a first current branch to be connected to the voltage to be monitored, and an auxiliary relay, the actuating winding of which is incorporated in a second current branch connected in parallel to the first current branch. In the first current branch a first make contact of the auxiliary relay is connected in series with the coil. In the second current branch a first resistor is connected in series with the actuating winding of the auxiliary relay. A series circuit consisting of a second resister and a second make contact of the auxiliary relay is connected in parallel to the actuating winding of the auxiliary relay.Type: GrantFiled: May 10, 2001Date of Patent: November 12, 2002Assignee: Holec Holland N.V.Inventors: Arend Jan Willem Lammers, Gerrit Willem Hendriks
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Patent number: 6262648Abstract: Electromagnetic actuator for moving a contact into a switched-on or switched-off state, comprising a contact-actuating rod which is displaceable in the longitudinal direction between a first position, corresponding to the switched-off state, and a second position, corresponding to the switched-on state. A core which is made of magnetizable material and interacts with a switch-on coil is attached to the contact-actuating rod. Also present is a pole piece which is made of magnetizable material and of which that face which is directed towards the core, in the first position of the contact-actuating rod, is arranged at an air-gap distance from that surface of the core which is directed perpendicular to the direction of displacement, and in the second position bears as closely as possible against the said core surface. The actuator furthermore comprises a yoke made of magnetizable material for closing the magnetic flux circuit of the switch-on coil through the pole piece and the core.Type: GrantFiled: March 20, 2000Date of Patent: July 17, 2001Assignee: Holec Holland N.V.Inventor: Arend Jan Willem Lammers