Patents by Inventor Saul Rosenbaum

Saul Rosenbaum 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).

  • Patent number: 7099129
    Abstract: A ground fault circuit interrupter (GFCI) with built in intelligence is described that includes circuitry to automatically indicate a device miswiring condition. When a GFCI is wired with its AC and LOAD terminals reversed, downstream devices are still protected in the event of a ground fault but the duplex receptacle on the GFCI itself is not. The invention incorporates miswiring sense circuitry that automatically triggers the generation of visual and audible alarms in the event a miswiring condition is sensed. The invention employs an alarm inhibiting technique that incorporates sense circuitry connected to the AC terminals on one side of the internal GFCI switches or relays and alarm generation circuitry connected to the LOAD terminals on the opposite side.
    Type: Grant
    Filed: August 22, 2003
    Date of Patent: August 29, 2006
    Assignee: Leviton Manufacturing Co., Inc.
    Inventors: Benjamin Neiger, Saul Rosenbaum, Bernard Gershen
  • Publication number: 20040257724
    Abstract: A ground fault circuit interrupter (GFCI) with built in intelligence is described that includes circuitry to automatically indicate a device miswiring condition. When a GFCI is wired with its AC and LOAD terminals reversed, downstream devices are still protected in the event of a ground fault but the duplex receptacle on the GFCI itself is not. The invention incorporates miswiring sense circuitry that automatically triggers the generation of visual and audible alarms in the event a miswiring condition is sensed. The invention employs an alarm inhibiting technique that incorporates sense circuitry connected to the AC terminals on one side of the internal GFCI switches or relays and alarm generation circuitry connected to the LOAD terminals on the opposite side.
    Type: Application
    Filed: August 22, 2003
    Publication date: December 23, 2004
    Inventors: Benjamin Neiger, Saul Rosenbaum, Bernard Gershen
  • Patent number: 6621671
    Abstract: A system protects people and property against electrical shock, using immersion detecting circuits, broken wire test circuits, electromechanical circuit breaking devices including coil/plunger arrangements, and relay circuit breaking mechanisms cooperative with associated circuitry, all of which are able to be incorporated as a system wholly within the load or appliance, and its associated cord set, including a plug.
    Type: Grant
    Filed: June 26, 2002
    Date of Patent: September 16, 2003
    Assignee: Leviton Manufacturing Co., Inc.
    Inventors: Bernard Gershen, Saul Rosenbaum, James N. Pearse
  • Patent number: 6611406
    Abstract: A ground fault circuit interrupter (GFCI) with built in intelligence is described that includes circuitry to automatically indicate a device miswiring condition. When a GFCI is wired with its AC and LOAD terminals reversed, downstream devices are still protected in the event of a ground fault but the duplex receptacle on the GFCI itself is not. The invention incorporates miswiring sense circuitry that automatically triggers the generation of visual and audible alarms in the event a miswiring condition is sensed. The invention employs an alarm inhibiting technique that incorporates sense circuitry connected to the AC terminals on one side of the internal GFCI switches or relays and alarm generation circuitry connected to the LOAD terminals on the opposite side.
    Type: Grant
    Filed: December 18, 2001
    Date of Patent: August 26, 2003
    Assignee: Leviton Manufacturing Co., Inc.
    Inventors: Benjamin Neiger, Saul Rosenbaum, Bernard Gershen
  • Publication number: 20030058590
    Abstract: A system protects people and property against electrical shock, using immersion detecting circuits, broken wire test circuits, electromechanical circuit breaking devices including coil/plunger arrangements, and relay circuit breaking mechanisms cooperative with associated circuitry, all of which are able to be incorporated as a system wholly within the load or appliance, and its associated cord set, including a plug.
    Type: Application
    Filed: June 26, 2002
    Publication date: March 27, 2003
    Inventors: Bernard Gershen, Saul Rosenbaum, James N. Pearse
  • Patent number: 6469881
    Abstract: A system protects people and property against electrical shock, using immersion detecting circuits, broken wire test circuits, electromechanical circuit breaking devices including coil/plunger arrangements, and relay circuit breaking mechanisms cooperative with associated circuitry, all of which are able to be incorporated as a system wholly within the load or appliance, and its associated cord set, including a plug.
    Type: Grant
    Filed: September 24, 2001
    Date of Patent: October 22, 2002
    Assignee: Leviton Manufacturing Co., Inc.
    Inventors: Bernard Gershen, Saul Rosenbaum, James N. Pearse
  • Publication number: 20020054464
    Abstract: A ground fault circuit interrupter (GFCI) with built in intelligence is described that includes circuitry to automatically indicate a device miswiring condition. When a GFCI is wired with its AC and LOAD terminals reversed, downstream devices are still protected in the event of a ground fault but the duplex receptacle on the GFCI itself is not. The invention incorporates miswiring sense circuitry that automatically triggers the generation of visual and audible alarms in the event a miswiring condition is sensed. The invention employs an alarm inhibiting technique that incorporates sense circuitry connected to the AC terminals on one side of the internal GFCI switches or relays and alarm generation circuitry connected to the LOAD terminals on the opposite side.
    Type: Application
    Filed: December 18, 2001
    Publication date: May 9, 2002
    Inventors: Benjamin Neiger, Saul Rosenbaum, Bernard Gershen
  • Publication number: 20020012211
    Abstract: A system protects people and property against electrical shock, using immersion detecting circuits, broken wire test circuits, electromechanical circuit breaking devices including coil/plunger arrangements, and relay circuit breaking mechanisms cooperative with associated circuitry, all of which are able to be incorporated as a system wholly within the load or appliance, and its associated cord set, including a plug.
    Type: Application
    Filed: September 24, 2001
    Publication date: January 31, 2002
    Inventors: Bernard Gershen, Saul Rosenbaum, James N. Pearse
  • Patent number: 6226161
    Abstract: A ground fault circuit interrupter (GFCI) with built in intelligence is described that includes circuitry to automatically indicate a device miswiring condition. When a GFCI is wired with its AC and LOAD terminals reversed, downstream devices are still protected in the event of a ground fault but the duplex receptacle on the GFCI itself is not. The invention incorporates miswiring sense circuitry that automatically triggers the generation of visual and audible alarms in the event a miswiring condition is sensed. The invention employs an alarm inhibiting technique that incorporates sense circuitry connected to the AC terminals on one side of the internal GFCI switches or relays and alarm generation circuitry connected to the LOAD terminals on the opposite side.
    Type: Grant
    Filed: August 9, 1999
    Date of Patent: May 1, 2001
    Assignee: Leviton Manufacturing Co., Inc.
    Inventors: Benjamin Neiger, Saul Rosenbaum, Bernard Gershen
  • Patent number: 6111733
    Abstract: An intelligent circuit interrupt system is electrically connected between an AC source and a load for interrupting a flow of AC from the source to the load upon detection of an interrupt condition. A circuit interrupter electrically connected to phase and neutral terminals of the AC source defines the interrupt condition. A relay switch with a relay coil and phase and neutral contacts is included such that line and load ends of the phase contact are electrically connected, respectively, between the interrupt means load side phase port and a phase terminal of the load. Line and load ends of the neutral contact are electrically connected, respectively, between the interrupt neutral port and a neutral terminal of the load. The relay coil is electrically coupled between load sides of said phase and neutral contacts for controlling the contacts in response to the interrupt signal.
    Type: Grant
    Filed: January 14, 1998
    Date of Patent: August 29, 2000
    Assignee: Leviton Manufacturing Co., Inc.
    Inventors: Benjamin Neiger, Bernard Gershen, Saul Rosenbaum
  • Patent number: 6016244
    Abstract: The present invention teaches a new and novel system for protecting people and property against electrical shock. The invention includes a number of preferred and other embodiments which have this as their goal, but which represent a number of distinctive and novel approaches to solving prior art problems. By way of example only, and without limiting the scope of this invention, these approaches include novel immersion detecting circuits, broken wire test circuits, electromechanical circuit breaking devices including coil/plunger arrangements, and relay circuit breaking mechanisms cooperative with associated circuitry, all of which are able to be incorporated as a system wholly within the load (appliance) and its associated cord set (including a "plug").
    Type: Grant
    Filed: August 17, 1998
    Date of Patent: January 18, 2000
    Assignee: Leviton Manufacturing Co., Inc.
    Inventors: Bernard Gershen, Saul Rosenbaum, James N. Pearse
  • Patent number: 5963408
    Abstract: A ground fault circuit interrupter (GFCI) with built in intelligence is described that includes circuitry to automatically indicate a device miswiring condition. When a GFCI is wired with its AC and LOAD terminals reversed, downstream devices are still protected in the event of a ground fault but the duplex receptacle on the GFCI itself is not. The invention incorporates miswiring sense circuitry that automatically triggers the generation of visual and audible alarms in the event a miswiring condition is sensed. The invention employs an alarm inhibiting technique that incorporates sense circuitry connected to the AC terminals on one side of the internal GFCI switches or relays and alarm generation circuitry connected to the LOAD terminals on the opposite side.
    Type: Grant
    Filed: December 31, 1997
    Date of Patent: October 5, 1999
    Assignee: Leviton Manufacturing Co., Inc.
    Inventors: Benjamin Neiger, Saul Rosenbaum, Bernard Gershen
  • Patent number: 5917686
    Abstract: A high current ground fault circuit interrupter has an induction sensor mounted on the device remote from the ground fault circuit interrupter circuitry in such a manner as to allow cables capable of carrying larger currents than the current carrying capability of the contacts in the interrupter circuitry to be passed therethrough. The induction sensor carries a differential transformer for sensing line to ground faults and a neutral transformer for sensing neutral to ground faults. It makes use of an external contactor whose coil is engaged by contacts of the ground fault circuit interrupter to interrupt the cables carrying the high currents, even at a distance somewhat remote from the ground fault circuit interrupter. The induction sensor has the capability of carrying therethrough cables of 240 volts AC line to ground or line to line.
    Type: Grant
    Filed: August 26, 1997
    Date of Patent: June 29, 1999
    Assignee: Leviton Manufacturing Co., Inc.
    Inventors: David Y. Chan, Saul Rosenbaum
  • Patent number: 5825599
    Abstract: A ground fault circuit interrupt system with uncommitted contacts is provided which includes line-side system, phase, neutral and ground terminals electrically connectable to phase, neutral and ground terminals of an AC power source and load-side system, phase, neutral and ground terminals electrically connectable, respectively, to phase, neutral and ground terminals of an electrical load. The system includes a ground fault circuit interrupter including line- and load-side phase and neutral terminals for electrical connection to the line-side system, phase and neutral terminals for controlling a state of conduction of AC current between the source and electrical load in accordance with a detection of an interrupt condition.
    Type: Grant
    Filed: May 5, 1997
    Date of Patent: October 20, 1998
    Assignee: Leviton Manufacturing Co., Inc.
    Inventor: Saul Rosenbaum
  • Patent number: 5801912
    Abstract: The present invention teaches a new and novel system for protecting people and property against electrical shock. The invention includes a number of preferred and other embodiments which have this as their goal, but which represent a number of distinctive and novel approaches to solving prior art problems. By way of example only, and without limiting the scope of this invention, these approaches include novel immersion detecting circuits, broken wire test circuits, electromechanical circuit breaking including coil/plunger arrangements, and relay circuit breaking mechanisms cooperative with associated circuitry, all of which are able to be incorporated as a system wholly within the load (appliance) and its associated cord set (including a "plug").
    Type: Grant
    Filed: October 4, 1996
    Date of Patent: September 1, 1998
    Assignee: Leviton Manufacturing Co., Inc.
    Inventors: Bernard Gershen, Saul Rosenbaum, James N. Pearse
  • Patent number: 5789894
    Abstract: A solid state motor speed control is described that is capable of controlling a motor so that it operates quietly, eliminating annoying buzzing noises that would otherwise be generated by the motor's windings. The invention provides for motor speed control with infinitely variable speed control settings. Rather than use triacs that generate RFI noise and cause motor windings to buzz due to their inherent avalanche switching, the invention utilizes power FETs or IGBTs to provide the switching function to control power delivery to the motor load . The power switches are controlled by an oscillator that generates a pulse train with a duty cycle controllable by the user. A filter shapes this signal into a trapezoidal control signal that drives the gate input of the power FET or IGBT switch. A kick start circuit turns the motor on initially for two to three seconds to overcome the inertia of the motor and its load.
    Type: Grant
    Filed: April 3, 1997
    Date of Patent: August 4, 1998
    Assignee: Leviton Manufacturing Co., Inc.
    Inventors: Benjamin Neiger, Douglas R. Watson, Roger Bradley, Saul Rosenbaum
  • Patent number: 5729421
    Abstract: A circuit analyzing system includes a current transformer for extracting current from a phase or neutral conductor of a three phase line, a filter connected to the output of the current transformer and functioning to substantially trap current at the fundamental frequency while substantially passing currents at various harmonic frequencies thereof, and signal processing circuitry connected to the output of the filter to perform various functions with the harmonic frequency current input thereto. Among these functions, as shown in various preferred embodiments, are measurement of the harmonic signal in RMS and conveyance of the output to a display instrument for a user or utility's convenience in monitoring harmonic frequency circuits, which have become more corrosion with the advent of electronic equipment having internal power supplies such as personal computers, work stations, printers, and the like.
    Type: Grant
    Filed: February 21, 1996
    Date of Patent: March 17, 1998
    Assignee: Leviton Manufacturing Co., Inc.
    Inventors: Bernard Gershen, Alfred J. Lombardi, James E. Meehan, Saul Rosenbaum
  • Patent number: 5729417
    Abstract: A ground fault circuit interrupter (GFCI) with built in intelligence is described that includes circuitry to automatically indicate a device miswiring condition. When a GFCI is wired with its AC and LOAD terminals reversed, downstream devices are still protected in the event of a ground fault but the duplex receptacle on the GFCI itself is not. The invention incorporates miswiring sense circuitry that automatically triggers the generation of visual and audible alarms in the event a miswiring condition is sensed. The invention employs an alarm inhibiting technique that incorporates sense circuitry connected to the AC terminals on one side of the internal GFCI switches or relays and alarm generation circuitry connected to the LOAD terminals on the opposite side.
    Type: Grant
    Filed: December 15, 1995
    Date of Patent: March 17, 1998
    Assignee: Leviton Manufacturing Co., Inc.
    Inventors: Benjamin Neiger, Saul Rosenbaum, Bernard Gershen
  • Patent number: 5715125
    Abstract: An intelligent circuit interrupt system is electrically connected between an AC source and a load for interrupting a flow of AC from the source to the load upon detection of an interrupt condition. A circuit interrupter electrically connected to phase and neutral terminals of the AC source defines the interrupt condition. A relay switch with a relay coil and phase and neutral contacts is included such that line and load ends of the phase contact are electrically connected, respectively, between the interrupt means load side phase port and a phase terminal of the load. Line and load ends of the neutral contact are electrically connected, respectively, between the interrupt neutral port and a neutral terminal of the load. The relay coil is electrically coupled between load sides of said phase and neutral contacts for controlling the contacts in response to the interrupt signal.
    Type: Grant
    Filed: January 28, 1997
    Date of Patent: February 3, 1998
    Assignee: Leviton Manufacturing Co., Inc.
    Inventors: Benjamin Neiger, Bernard Gershen, Saul Rosenbaum
  • Patent number: 5706155
    Abstract: A ground fault circuit interrupter (GFCI) with built in intelligence is described that includes circuitry to automatically indicate a device miswiring condition. When a GFCI is wired with its AC and LOAD terminals reversed, downstream devices are still protected in the event of a ground fault but the duplex receptacle on the GFCI itself is not. The invention incorporates miswiring sense circuitry that automatically triggers the generation of visual and audible alarms in the event a miswiring condition is sensed. The invention employs an alarm inhibiting technique that incorporates sense circuitry connected to the AC terminals on one side of the internal GFCI switches or relays and alarm generation circuitry connected to the LOAD terminals on the opposite side.
    Type: Grant
    Filed: November 14, 1996
    Date of Patent: January 6, 1998
    Assignee: Leviton Manufacturing Co., Inc.
    Inventors: Benjamin Neiger, Saul Rosenbaum, Bernard Gershen