Patents Assigned to Underwriters Laboratories Inc.
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Publication number: 20140260512Abstract: A heat-generating apparatus includes a frame assembly and a securement assembly carried by the frame assembly. The securement assembly includes a panel member arranged in a first vertical plane for supporting a target material parallel to the first vertical plane. The heat-generating apparatus also includes a heating support assembly adjustably supported by the frame and including at least one heating element arranged in a second vertical plane that is parallel to and offset from the first vertical plane. The heating support assembly is adjustable along a horizontal first adjustment axis that is perpendicular to each of the first and second vertical planes and along a second adjustment axis that is disposed in or adjacent to the second vertical plane.Type: ApplicationFiled: March 15, 2013Publication date: September 18, 2014Applicant: Underwriters Laboratories Inc.Inventor: Underwriters Laboratories Inc.
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Patent number: 8786847Abstract: This invention is related to a light measuring apparatus and a method of using the device. It is used to measure various photometric quantities of the light emanating from a distant source of light.Type: GrantFiled: January 12, 2011Date of Patent: July 22, 2014Assignee: Underwriters Laboratories, Inc.Inventors: Ian Lewin, John O'Farrell
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Publication number: 20120319709Abstract: A high speed controllable load uses a voltage waveform synthesizer and a driver circuit to dynamically control an electronically variable load to generate a current though an arc fault circuit interrupter (AFCI) device under test. Sensors may be used to monitor a source voltage and the output current to generate an arbitrary waveform have a range of voltage and current phase shifts. An optical isolation circuit allows separation of grounds between a control stage and the AFCI device under test.Type: ApplicationFiled: June 15, 2011Publication date: December 20, 2012Applicant: UNDERWRITERS LABORATORIES INC.Inventor: Paul W. Brazis, JR.
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Publication number: 20110295624Abstract: A method for determining a fire risk score includes extracting data from real estate values, map data, FIRS data, and building data that includes an address, an age, a size, an indication whether or not sprinklers are present, and an indication whether one or more smoke detectors are remotely monitored; assigning weights to the extracted building data; identifying one or more fire stations near the building; obtaining or determining a driving time from the one or more fire stations to the building; performing a statistical regression analysis to: at least the driving time from the one or more fire stations to the building, the age of the building and the size of the building to determine an expected loss to the building in the event of a fire, and calculating a fire risk score for the building to assist an insurance company assess a risk of insuring the building.Type: ApplicationFiled: May 25, 2011Publication date: December 1, 2011Applicant: UNDERWRITERS LABORATORIES INC.Inventors: J. T. Chapin, Pravinray Gandhi, Christopher E. Hasbrook, Stephen I. Kerber
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Patent number: 7894066Abstract: The image data capture of a test piece is performed with at least one first camera. A reference point of the test piece is determined by processing the image data recorded with the at least one first camera. A burner is positioned at a prescribed first distance from the reference point for the flame exposure of the test piece. At least one second camera may also detect whether the test piece exposed to a flame is burning or incandescing. At least one third camera may be used for monitoring the burner flame and at least one fourth camera may be used for determining whether the test piece drips while burning. Furthermore, at least one detector may used for detecting whether the drips ignite a pad of wadding positioned under the test piece.Type: GrantFiled: July 14, 2008Date of Patent: February 22, 2011Assignee: Underwriters Laboratories Inc.Inventors: Martin Behrendt, Bahman Sarabi, Wilfried Teeting
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Patent number: 5944592Abstract: A sharpener apparatus includes a base, a linear bearing assembly mounted on the base, and a support block carried by the bearing assembly for reciprocating movement along a rectilinear path relative to the base. A planar abrasive surface underlies the support block which has one or more open channels for receiving workpieces in sliding relation with the longitudinal axes of the workpiece preferably inclined to the abrasive surface. A pusher member is supported by the support block adjacent each channel for applying a constant force longitudinally of the corresponding workpiece to urge its tip against the abrasive surface. Manual or powered reciprocating movement of the support block effects an abrasive action of the workpiece tips against the abrasive surface to form a highly accurate and repeatable tip geometry, such as a chisel point, on each workpiece.Type: GrantFiled: April 30, 1997Date of Patent: August 31, 1999Assignee: Underwriters Laboratories Inc.Inventors: Jeffrey B. Hall, William D. Parker
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Patent number: 5638003Abstract: An apparatus for testing a dielectric sample for susceptibility to surface electrical failure due to tracking. The apparatus includes an enclosure continuously purged of air-borne contaminants, which eliminates external drafts, and a base disposed within the enclosure for supporting the dielectric sample. A pair of electrodes are operably interconnected with a variable voltage power supply and adapted to engage the dielectric sample on a first side with a mutual separation. A source of water and water borne contaminants intermittently discharges the water and water-borne contaminants in droplet form onto the dielectric test sample between the electrodes.Type: GrantFiled: May 23, 1995Date of Patent: June 10, 1997Assignee: Underwriters Laboratories, Inc.Inventor: Jeffrey B. Hall