Patents by Inventor Thomas F. Barnes
Thomas F. Barnes 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: 20240171490Abstract: One embodiment of the present invention sets forth techniques for evaluating connections between nodes in a mesh network. The techniques include determining, by a first node, a number of messages received by the first node from a second node during a period of time, the period of time including a number of listening windows during which a message is expected to be received from the second node; determining, by the first node based on the number of messages received and the number of listening windows, a received message success rate associated with the second node; selecting, by the first node, the second node from a plurality of neighbor nodes based on the received message success rate; and transmitting, by the first node, a first message to a target destination via the second node.Type: ApplicationFiled: February 1, 2024Publication date: May 23, 2024Inventors: Thomas F. UHLING, Keith Wayne BARNES
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Patent number: 11924077Abstract: One embodiment of the present invention sets forth a technique for evaluating connections between nodes in a mesh network.Type: GrantFiled: August 13, 2021Date of Patent: March 5, 2024Assignee: ITRON, INC.Inventors: Thomas F. Uhling, Keith Wayne Barnes
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Patent number: 7710663Abstract: A prismatic lens and a reflector/refractor device having enhanced characteristics are provided for lighting fixtures. The prismatic lens and the reflector/refractor device are formed of a silicone material. A prismatic lens member includes a plurality of prisms on a surface thereof for refracting light. The reflector/refractor device includes a plurality of prisms on a surface thereof for reflecting and refracting light. The silicone material forming the prismatic lens and the reflector/refractor device is substantially transparent, and enables forming enhanced optical elements, for example, by injection molding technique. The silicone material is a selected one of dimethylsilicone, phenylmethlysilicone, or similar silicone material enabling enhanced optical performance for the prismatic lens and the reflector/refractor device.Type: GrantFiled: March 10, 2008Date of Patent: May 4, 2010Assignee: A.L.P. Lighting & Ceiling Products, Inc.Inventors: Thomas F. Barnes, Joel E. Robinson, John R. Anthony
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Publication number: 20090225430Abstract: A prismatic lens and a reflector/refractor device having enhanced characteristics are provided for lighting fixtures. The prismatic lens and the reflector/refractor device are formed of a silicone material. A prismatic lens member includes a plurality of prisms on a surface thereof for refracting light. The reflector/refractor device includes a plurality of prisms on a surface thereof for reflecting and refracting light. The silicone material forming the prismatic lens and the reflector/refractor device is substantially transparent, and enables forming enhanced optical elements, for example, by injection molding technique. The silicone material is a selected one of dimethylsilicone, phenylmethlysilicone, or similar silicone material enabling enhanced optical performance for the prismatic lens and the reflector/refractor device.Type: ApplicationFiled: March 10, 2008Publication date: September 10, 2009Inventors: Thomas F. Barnes, Joel E. Robinson, John R. Anthony
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Patent number: 6767106Abstract: An edge-lit luminaire includes a panel formed of a transparent material. The panel includes first and second opposing surfaces. At least one edge light source is positioned proximate to the panel. A plurality of prismatic reflective/refractive elements is spaced apart on a predefined pattern on the second surface. The plurality of prismatic reflective/refractive elements have a predefined contour for accurate ray direction control. The predefined pattern on the second surface includes predefined gradient spacing and size variables of the prismatic reflective/refractive elements for providing uniform ray emission across the panel. The plurality of prismatic reflective/refractive elements have a predefined relative spacing of the prismatic reflective/refractive elements based upon a position relative to the light source. Also the predefined relative size of each of the prismatic reflective/refractive elements can be based upon its position relative to the light source.Type: GrantFiled: May 8, 2000Date of Patent: July 27, 2004Assignee: Lexalite International CorporationInventors: Josh Barnes, Thomas F. Barnes, II, Paul Carlton Belding, Joel Robinson
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Publication number: 20030125406Abstract: In brief, a lighting fixture is provided. The lighting fixture has both a transmitted and reflected light component employing a polymeric material which has an appearance, in varying degrees, of white. The material has internal elements which can be varied to be either highly reflective or permit efficient diffuse transmission of incident light rays. The ratio of reflected to transmitted light and the degree of diffusion are tailored to the application, light source and desired appearance. The material is adapted for providing a selected diffuse transmission component of a total fixture output. The material provides a set diffuse transmission component of greater than 1% and less than 25% where the material is formed by pigmenting a transparent material with a white pigment.Type: ApplicationFiled: December 13, 2002Publication date: July 3, 2003Applicant: LEXALITE INTERNATIONAL CORPORATIONInventors: Thomas F. Barnes, James T. Hamilton
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Publication number: 20030109593Abstract: In brief, a lighting fixture is provided. The lighting fixture has both a transmitted and reflected light component employing a polymeric material which has an appearance, in varying degrees, of white. The material has internal elements which can be varied to be either highly reflective or permit efficient diffuse transmission of incident light rays. The ratio of reflected to transmitted light and the degree of diffusion are tailored to the application, light source and desired appearance. The material is adapted for providing a selected diffuse transmission component of a total fixture output. The material provides a set diffuse transmission component of greater than 1% and less than 25% where the material is formed by pigmenting a transparent material with a white pigment.Type: ApplicationFiled: November 25, 2002Publication date: June 12, 2003Applicant: LEXALITE INTERNATIONAL CORPORATIONInventors: Thomas F. Barnes, James T. Hamilton
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Patent number: 6550938Abstract: In brief, a lighting fixture is provided. The lighting fixture has both a transmitted and reflected light component employing a polymeric material which has an appearance, in varying degrees, of white. The material has internal elements which can be varied to be either highly reflective or permit efficient diffuse transmission of incident light rays. The ratio of reflected to transmitted light and the degree of diffusion are tailored to the application, light source and desired appearance. The material is adapted for providing a selected diffuse transmission component of a total fixture output. The material provides a set diffuse transmission component of greater than 1% and less than 25% where the material is formed by pigmenting a transparent material with a white pigment.Type: GrantFiled: February 9, 2000Date of Patent: April 22, 2003Assignee: Lexalite International CorporationInventors: Thomas F. Barnes, II, James T. Hamilton
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Publication number: 20020082310Abstract: In brief, a lighting fixture is provided. The lighting fixture has both a transmitted and reflected light component employing a polymeric material which has an appearance, in varying degrees, of white. The material has internal elements which can be varied to be either highly reflective or permit efficient diffuse transmission of incident light rays. The ratio of reflected to transmitted light and the degree of diffusion are tailored to the application, light source and desired appearance. The material is adapted for providing a selected diffuse transmission component of a total fixture output. The material provides a set diffuse transmission component of greater than 1% and less than 25% where the material is formed by pigmenting a transparent material with a white pigment.Type: ApplicationFiled: February 9, 2000Publication date: June 27, 2002Inventors: Thomas F. Barnes ll, James T. Hamilton
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Publication number: 20020001188Abstract: An edge-lit luminaire is provided. The edge-lit luminaire includes a panel formed of a transparent material. The panel includes first and second opposing surfaces. At least one edge light source is positioned proximate to the panel. A plurality of prismatic reflective/refractive elements is spaced apart on a predefined pattern on the second surface. The plurality of prismatic reflective/refractive elements have a predefined contour for accurate ray direction control. The predefined pattern on the second surface includes predefined gradient spacing and size variables of the prismatic reflective/refractive elements for providing uniform ray emission across the panel. The plurality of prismatic reflective/refractive elements have a predefined relative spacing of the prismatic reflective/refractive elements based upon a position relative to the light source. Also the predefined relative size of each of the prismatic reflective/refractive elements can be based upon its position relative to the light source.Type: ApplicationFiled: May 8, 2000Publication date: January 3, 2002Inventors: Josh Barnes, Thomas F. Barnes, Paul Carleton Belding, Joel Robinson
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Patent number: 5967648Abstract: A luminaire having both a direct and indirect lighting component is provided. The luminaire includes a fixture including a lamp. A neutral density polymeric material is disposed below the lamp. The neutral density polymeric material includes a polymeric substrate carrying a predetermined pattern for reflecting and transmitting incident light from the lamp.Type: GrantFiled: February 9, 1998Date of Patent: October 19, 1999Assignee: Lexalite International CorporationInventors: Thomas F. Barnes, II, Joel E. Robinson, Dale A. Troppman
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Patent number: 5143446Abstract: An improved lighting fixture includes a light reflecting and/or light transmitting member for reflecting or transmitting visible light. A light transmitting film is disposed adjacent the light reflecting or transmitting member. The light transmitting film is formed of a glutarimide acrylic copolymer. The glutarimide acrylic copolymer film provides protection to the light reflecting and/or transmitting member from damaging effects of ultraviolet radiation and is substantially resistant to ultraviolet radiation.Type: GrantFiled: February 11, 1992Date of Patent: September 1, 1992Assignee: Lexalite International CorporationInventors: Josh T. Barnes, Thomas F. Barnes, Earl E. Smith, Dale A. Troppman
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Patent number: D714484Type: GrantFiled: February 15, 2013Date of Patent: September 30, 2014Assignee: A.L.P. Lighting & Ceiling Products, Inc.Inventors: Thomas F. Barnes, Joel E. Robinson
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Patent number: D717483Type: GrantFiled: February 15, 2013Date of Patent: November 11, 2014Assignee: A.L.P. Lighting & Ceiling Products, Inc.Inventors: Thomas F. Barnes, Joel E. Robinson