Patents Represented by Attorney, Agent or Law Firm Mark E. Rose
  • Patent number: 8345400
    Abstract: A surge suppression circuit for a load control device allows the load control device to pass hipot testing, while providing improved protection of the load control device during surge events. The load control device comprises a load control circuit and a filter circuit for preventing noise generated by the load control circuit from being provided to an AC power source. The surge suppression circuit comprises a clamping device adapted to be electrically coupled across the AC power source, and first and second spark gaps coupled across the filter circuit for limiting the magnitude of the voltage generated by inductive components of the filter circuit. The filter circuit may comprise a common-mode choke, and two series-connected capacitor having their junction connected to earth ground. Alternatively, the filter circuit may additionally comprise a differential-mode choke.
    Type: Grant
    Filed: August 17, 2010
    Date of Patent: January 1, 2013
    Assignee: Lutron Electronics Co., Inc.
    Inventor: Dragan Veskovic
  • Patent number: 8334663
    Abstract: A load control device adapted to be coupled between an AC power source and an electrical load for controlling the power delivered to the load includes a power supply having an energy storage capacitor and a charge pump circuit adapted to conduct an input charging current through the load and to conduct an output charging current through the energy storage capacitor to thus generate a DC supply voltage across the energy storage capacitor, where the output charging current has a magnitude greater than the input charging current. The charge pump circuit includes a switched capacitor operable to charge through the load during a first half-cycle, and to discharge into the energy storage capacitor in a second, subsequent half-cycle. The charge pump circuit operates at line frequency and the magnitude of the input charging current is substantially small so as to avoid generating noise in a noise-sensitive circuit of the load control device.
    Type: Grant
    Filed: July 30, 2010
    Date of Patent: December 18, 2012
    Assignee: Lutron Electronics Co., Inc.
    Inventor: Daniel F. Carmen
  • Patent number: 8289192
    Abstract: A control device, such as a keypad device, for use in a load control system for controlling the power delivered from an AC power source to an electrical load comprises a switch, a yoke fixedly mounted with respect to the switch, and a removable button assembly that may be removed from the control device. The removable button assembly comprises a spring tree having a frame portion and at least one button pivotably coupled to the frame portion. The button assembly is received within a channel of the yoke and is positioned such that the button is operable to actuate the switch when the button is pressed. The button assembly is adapted to slide through the channel, such that the button assembly may be removed from the control device. Accordingly, the button of the control device may be easily changed after installation of the control device.
    Type: Grant
    Filed: January 22, 2010
    Date of Patent: October 16, 2012
    Assignee: Lutron Electronics Co., Inc.
    Inventor: Brian R. O'Donnell
  • Patent number: 8288981
    Abstract: A load control system provides for automatically controlling a position of a motorized window treatment to control the amount of sunlight entering a space of a building through a window located in a façade of the building in order to control a sunlight penetration distance within the space and minimize occupant distractions. The load control system automatically generates a timeclock schedule having a number of timeclock events for controlling the position of the motorized window treatment during the present day. A user is able to select a desired maximum sunlight penetration distance for the space and a minimum time period that may occur between any two consecutive timeclock events. In addition, a maximum number of movements that may occur during the timeclock schedule may also be entered. The load control system uses these inputs to determine event times and corresponding positions of the motorized window treatment for each timeclock event of the timeclock schedule.
    Type: Grant
    Filed: September 21, 2009
    Date of Patent: October 16, 2012
    Assignee: Lutron Electronics Co., Inc.
    Inventors: Walter S. Zaharchuk, Brian Michael Courtney, William Bryce Fricke, William H. Howe, Timothy S. Majewski, Joel S. Spira
  • Patent number: 8278839
    Abstract: A two-wire switching circuit can handle a large inrush current, but does not require a neutral connection or a heavy-duty mechanical switch or relay. The switching circuit comprises a mechanical air-gap switch, a first controllably conductive device (e.g., a bidirectional semiconductor switch), and a second controllably conductive device (e.g., a latching relay), which are all adapted to be coupled between an AC power source and an electrical load when the air-gap switch is in a first position. First and second delay circuits control the semiconductor switch and the latching relay to be conductive at different times after the air-gap switch is changed to the first position. Specifically, the semiconductor switch is rendered conductive before the latching relay is rendered conductive, such that the semiconductor switch conducts the large inrush current. The latching relay conducts current from the AC power source to the electrical load after the inrush current has subsided.
    Type: Grant
    Filed: February 1, 2010
    Date of Patent: October 2, 2012
    Assignee: Lutron Electronics Co., Inc.
    Inventors: Christopher James Salvestrini, Evan R. Ackmann, Miguel Aguado Pelaez
  • Patent number: 8274233
    Abstract: A dimmer switch for controlling the amount of power delivered to and thus the intensity of a lighting load comprises a visual display operable to provide a visual indication representative of energy savings and usage information. The dimmer switch comprises an intensity adjustment actuator, such as a slider knob or a rotary knob, which may be coupled to a potentiometer for adjusting the amount of power delivered to the lighting load. The potentiometer may comprise a dual potentiometer including a resistive element and a conductive element having a cut. The visual display may comprise a single visual indicator, which may be illuminated a first color, such as green, when the intensity of the lighting load is less than or equal to the eco-level intensity, and illuminated a second different color, such as red, when the intensity of the lighting load is greater than the eco-level intensity.
    Type: Grant
    Filed: December 23, 2010
    Date of Patent: September 25, 2012
    Assignee: Lutron Electronics Co., Inc.
    Inventors: Gregory Altonen, Elliot G. Jacoby, Christopher James Salvestrini, Jamie J. Steffie, Joel S. Spira
  • Patent number: 8274240
    Abstract: A two-wire switching circuit can handle a large inrush current, but does not require a neutral connection or a heavy-duty mechanical switch or relay. The switching circuit comprises a mechanical air-gap switch and a controllably conductive device, which are coupled in series and are adapted to be coupled between an AC power source and an electrical load when the mechanical switch is in a first position. A first delay circuit is coupled in parallel with the controllably conductive device and in series with the mechanical air-gap switch. A latching circuit, which is responsive to the first delay circuit, is coupled to the controllably conductive device for controlling the controllably conductive device. The first delay circuit causes the latching circuit to control the controllably conductive device to be conductive after a first predetermined time after the mechanical air-gap switch changes to the first position.
    Type: Grant
    Filed: February 1, 2010
    Date of Patent: September 25, 2012
    Assignee: Lutron Electronics Co., Inc.
    Inventor: Christopher James Salvestrini
  • Patent number: 8242708
    Abstract: A multiple location load control system comprises a main device and remote devices, which do not require neutral connections, but allow for visual and audible feedback at the main device and the remote devices. The main device and the remote devices are adapted to be coupled in series electrical connection between an AC power source and an electrical load, and to be further coupled together via an accessory wiring. The remote devices can be wired on the line side and the load side of the load control system, such that the main device is wired “in the middle” of the load control system. The main device is operable to enable a charging path to allow the remote devices to charge power supplies through the accessory wiring during a first time period of a half-cycle of the AC power source. The main device and the remote devices are operable to communicate with each other via the accessory wiring during a second time period of the half-cycle.
    Type: Grant
    Filed: December 3, 2010
    Date of Patent: August 14, 2012
    Assignee: Lutron Electronics Co., Inc.
    Inventors: James P. Steiner, Cyril Baby, Christopher Buck, Daniel F. Carmen
  • Patent number: 8237069
    Abstract: A control device, such as a wireless remote control for a load control system, comprises a return spring that operates to return multiple buttons to respective idle positions resulting in lower cost and complexity of the remote control. Specifically, the remote control comprises a first button having an edge, and a second button having a flange positioned adjacent the edge of the first button, such that the edge of the first button rests on the flange of the second button. The return spring has a first end fixed in location with respect to the housing and a second end contacting the second button for returning to the second button to an idle position after an actuation of the second button. After an actuation of the first button, the return spring causes the flange of the second button to force the first button back to an idle position.
    Type: Grant
    Filed: December 21, 2009
    Date of Patent: August 7, 2012
    Assignee: Lutron Electronics Co., Inc.
    Inventors: Seth McCue GaleWyrick, Andrew Weiman
  • Patent number: 8210229
    Abstract: A pleated roller shade system allows a thin flexible shade fabric, such as, for example, silk, to be wrapped around a roller tube. The system comprises a pleating hembar contained within a hembar pocket of the shade fabric. The hembar is characterized by a non-linear shape, such as a serpentine shape, for causing the shade fabric to hang with a plurality of pleats. The hembar may comprise a plurality of C-shaped hembar sections flexibly coupled to each other. The system may also comprise an elongated pleating assembly mounted parallel to the roller tube and having a fabric-receiving opening that defines a non-linear (e.g., serpentine) path. The shade fabric may be received through the fabric-receiving opening and folded by the pleating assembly, such that the shade fabric is wrapped around the roller tube in folds as the roller tube rotates.
    Type: Grant
    Filed: June 17, 2011
    Date of Patent: July 3, 2012
    Assignee: Lutron Electronics Co., Inc.
    Inventor: David A. Kirby
  • Patent number: 8212486
    Abstract: A load control device for controlling the amount of power delivered from an AC power source to an electrical load comprises a rotary actuator, such as a rotary knob or a rotary wheel. The load control device increases and decreases the amount of power delivered to the electrical load in response to rotations of the rotary knob in first and second directions, respectively. The load control device accelerates the rate of change of the amount of power delivered to the load in response to the angular velocity of the rotary actuator. The load control device generates a ratcheting sound when the rotary actuator is rotated in the first direction at a high-end intensity of the load control device. The load control device is operable to control the electrical load in response to both actuations of the rotary actuator and digital messages received via a communication link.
    Type: Grant
    Filed: November 29, 2010
    Date of Patent: July 3, 2012
    Assignee: Lutron Electronics Co., Inc.
    Inventors: Ethan Charles Biery, Maureen E. Flowers, Galen Edgar Knode
  • Patent number: 8210369
    Abstract: A drapery system comprises an elongated track having two track portions and an elongated rectangular splice structure for coupling the two track portions together. Each track portion has a splice channel and at least one track hole located in the splice channel. The splice structure has at least two splice holes extending through the splice structure and is adapted to be received within the splice channels. Screws are received through the splice holes and extend into the track holes in a direction perpendicular to the splice structure. The distance between the two splice holes is less than the distance between the two track holes when the two track portions are aligned adjacent each other and the screws are not installed. Each of the screws contacts an edge of the respective track hole to provide a longitudinal force on the respective track portion when the screws are installed in the splice holes and track holes, such that the track portions are forced together.
    Type: Grant
    Filed: March 9, 2009
    Date of Patent: July 3, 2012
    Assignee: Lutron Electronics Co., Inc.
    Inventor: Joel E. Hibshman
  • Patent number: 8210228
    Abstract: A pleated roller shade system allows a thin flexible shade fabric, such as, for example, silk, to be wrapped around a roller tube. The pleated roller shade system comprises a drive system, such as a motor or manual drive system, for controlling of the rotation of the roller tube. The roller shade system may comprise a pleating hem bar that is contained within a hem bar pocket of the shade fabric and has a non-linear shape for causing the shade fabric to hang with a plurality of pleats. The roller shade system may also comprise an elongated pleating assembly mounted parallel to the roller tube and having a fabric-receiving opening that defines a non-linear path. The shade fabric may be received through the fabric-receiving opening and folded by the pleating assembly, such that the shade fabric is wrapped around the roller tube in folds as the roller tube rotates.
    Type: Grant
    Filed: October 30, 2009
    Date of Patent: July 3, 2012
    Assignee: Lutron Electronics Co., Inc.
    Inventors: David A. Kirby, Matthew R. Hontz
  • Patent number: 8208235
    Abstract: A load control device comprises a bidirectional semiconductor switch for controlling the amount of power delivered to an electrical load, and the bidirectional semiconductor switch further comprises two field effect transistors (FETs) in anti-series electrical connection. In the event that one of the FETs fails in a shorted state, and if the load control device is using a phase control dimming technique to control the load, the load control device may provide an asymmetric waveform to the electrical load. In order to determine whether this asymmetric waveform is present, a microprocessor of the load control device use voltage thresholds and/or offsets to monitor the voltage across the FETs. Thus, the microprocessor is operable to detect a fault condition of the load control device wherein the fault condition may comprise an asymmetry condition, or more particularly, a failure condition of one of the FETs.
    Type: Grant
    Filed: September 4, 2009
    Date of Patent: June 26, 2012
    Assignee: Lutron Electronics Co., Inc.
    Inventor: Neil Orchowski
  • Patent number: D664933
    Type: Grant
    Filed: September 21, 2011
    Date of Patent: August 7, 2012
    Assignee: Lutron Electronics Co., Inc.
    Inventors: Erica L. Clymer, Matthew R. Hontz, MacKenzie Mor, Gregory Altonen, Elliot G. Jacoby, Jason C. Killo
  • Patent number: D665290
    Type: Grant
    Filed: September 21, 2010
    Date of Patent: August 14, 2012
    Assignee: Lutron Electronics Co., Inc.
    Inventors: Nikhil Vathal Bhate, Elliot G. Jacoby, Gregory Altonen, Jason C. Killo, Greg Edward Sloan
  • Patent number: D666162
    Type: Grant
    Filed: June 17, 2011
    Date of Patent: August 28, 2012
    Assignee: Lutron Electronics Co., Inc.
    Inventor: David William Petrillo
  • Patent number: D666978
    Type: Grant
    Filed: May 13, 2011
    Date of Patent: September 11, 2012
    Assignee: Lutron Electronics Co., Inc.
    Inventors: Edward M. Felegy, Jr., Gregory M. Snyder, Gregory Altonen, Elliot G. Jacoby, Noel Mayo
  • Patent number: D669038
    Type: Grant
    Filed: June 16, 2011
    Date of Patent: October 16, 2012
    Assignee: Lutron Electronics Co., Inc.
    Inventors: Edward M. Felegy, Jr., David William Petrillo, Gregory M. Snyder, Gregory Altonen, Elliot G. Jacoby, Noel Mayo, Joel S. Spira
  • Patent number: D673510
    Type: Grant
    Filed: June 21, 2011
    Date of Patent: January 1, 2013
    Assignee: Lutron Electronics Co., Inc.
    Inventors: Edward M. Felegy, Jr., Gregory M. Snyder, Gregory Altonen, Elliot G. Jacoby, Noel Mayo, Joel S. Spira