Patent application number | Description | Published |
20090029842 | Fused silica having low OH, OD levels and method of making - A fused silica article having a combined concentration of hydroxyl (OH) and deuteroxyl (OD) concentration of less than 10 parts per million (ppm) and, in one embodiment, less than 1 ppm. The fused silica article is formed by drying a soot blank in a halogen-free atmosphere comprising carbon monoxide. The dried soot blank may optionally be doped to reach target levels of OH and OD concentrations and improve homogeneity within the fused silica article. The dried soot blank is then oxidized and, sintered to form the article. A method of reducing the combined concentration of OH and OD to less than 10 ppm is also described. | 01-29-2009 |
20090272716 | Process for Preparing an Optical Preform - A method of preparing an optical preform includes the steps of: a) etching an optical preform to remove a portion of an oxide material deposited on the preform by using a gas comprising an etchant gas containing fluorine at a sufficient temperature and gas concentration to create a redeposited germanium containing compounds contamination such as GeO | 11-05-2009 |
20100071421 | Soot Radial Pressing For Optical Fiber Overcladding - A method and apparatus for making an optical fiber preform. The apparatus has an outer wall and an inner wall. The outer wall surrounds the inner wall and the inner wall surrounds an inner cavity of the apparatus. A consolidated glass rod is deposited in the inner cavity after which particulate glass material, such as glass soot, is deposited in the inner cavity around the glass rod. A radially inward pressure is applied against the particulate glass material to pressurize the particulate glass material against the glass rod. | 03-25-2010 |
20100122558 | Apparatus and Method of Sintering an Optical Fiber Preform - A method and apparatus for consolidating an optical fiber preform, wherein the optical fiber preform is located in a furnace comprising a muffle tube, said muffle tube comprising an inner section and an outer section surrounding the inner section. The inner and outer sections are comprised of different materials, and the preform is exposed to a pressure less than 0.8 atm while simultaneously exposing said preform to a temperature of at least 1000 C. | 05-20-2010 |
20120202674 | Treatment of Silica Based Soot or an Article made of Silica Based Soot - One embodiment of the disclosure relates to a method of cleaning silica-based soot or an article made of silica-based soot, the method comprising the step of treating silica-based soot or the article made of silica-based soot with at least one of the following compounds: (i) a mixture of CO and Cl | 08-09-2012 |
20130319049 | APPARATUS FOR FORMING GLASS WITH EDGE DIRECTORS AND METHODS - An apparatus for downwardly drawing glass ribbon comprises edge directors, wherein an outer portion defining a first pair of surfaces and a second pair of surfaces. In one example, the first and second pair of surfaces of each edge director includes a glass wettability with a static contact angle within a range of from about 30° to about 60°. In another example, the outer portion comprises a platinum alloy including from about 0.05 weight % tin to about 5 weight % tin. Methods for forming glass include the step of providing the edge director with a desired glass wettability and/or a desired platinum alloy. | 12-05-2013 |
20140298861 | APPARATUS FOR FORMING GLASS WITH EDGE DIRECTORS AND METHODS - An apparatus for downwardly drawing glass ribbon comprises edge directors, wherein an outer portion defining a first pair of surfaces and a second pair of surfaces. In one example, the first and second pair of surfaces of each edge director includes a glass wettability with a static contact angle within a range of from about 30° to about 60°. In another example, the outer portion comprises a platinum alloy including from about 0.05 weight % tin to about 5 weight % tin. Methods for forming glass include the step of providing the edge director with a desired glass wettability and/or a desired platinum alloy. | 10-09-2014 |
20140318659 | SEALING METHOD FOR SILICON CARBIDE PARTS USED AT HIGH TEMPERATURES - The present disclosure describes a silicon carbide articles useful at high temperatures, and the method of making them. The method comprises providing a plurality of silicon carbide parts; providing a mullite gasket; placing the gasket between the ends of the parts to be joined to thereby form an assembly; applying a load in the range of 15-25 pounds per square inch to the parts' ends distal from the gasket to thereby press the gasket; heating the assembly in a muffle furnace under load to a temperature in the range of 1450° C. to 1550° C.; increasing the load on the to range of 30-50 pounds per square inch and holding the assembly at the temperature for a time in the range of 2-5 days to adhere the mullite gasket to the ends of the silicon carbide parts. | 10-30-2014 |
Patent application number | Description | Published |
20090288424 | Enclosure for surveillance hardware - The enclosure for surveillance hardware provided herein protects the hardware from external elements and from damage. The enclosure may be configured for a node of a peer to peer surveillance architecture. The enclosure may comprise a sealed component chamber and an adjacent support chamber. The sealed component chamber may enclose the components therein in an air or watertight manner. The support chamber may comprise an airflow system and thermal conductor which regulates the temperature in the component chamber. The enclosure may be formed from a multilayer material having various protective qualities. A controller may be provided to control operation of the airflow system and thermal conductor in response to changes in temperature. | 11-26-2009 |
20090289788 | Peer to peer surveillance architecture - A peer to peer surveillance architecture comprising a plurality of independent nodes for capturing, analyzing, storing, and viewing surveillance information is disclosed. The surveillance architecture has no central controller or single point of failure because of the peer to peer or independent relationship between its nodes. Generally, surveillance information of various types is captured by one or more capture nodes and transmitted to or one or more viewing, content storage, or server nodes for display, analysis, storage, or a combination thereof. Server nodes may provide authentication services to validate user or device credentials prior to granting access to surveillance information. In one or more embodiments, specialized video compression hardware is provided to allow high quality video surveillance information to be transmitted across low bandwidth connections. Compression may also be performed on other types of surveillance information. | 11-26-2009 |
20100139290 | ENCLOSURE FOR SURVEILLANCE HARDWARE - The enclosure for surveillance hardware provided herein protects the hardware from external elements and from damage. The enclosure may be configured for a node of a peer to peer surveillance architecture or other devices, and for mobile or other applications. The enclosure may comprise a sealed component chamber and an adjacent support chamber. The sealed component chamber may enclose the components therein in an air or watertight manner. The support chamber may comprise an airflow system and thermal conductor which regulates the temperature in the component chamber. The enclosure may be formed from a multilayer material having various protective qualities. A controller may be provided to control operation of the airflow system and thermal conductor in response to changes in temperature. | 06-10-2010 |
20110013018 | AUTOMATED CAMERA RESPONSE IN A SURVEILLANCE ARCHITECTURE - A detection and response device for a surveillance system detects events, responds to events, or both. The detection and response device may be used with or provided by a variety of surveillance systems, including peer to peer surveillance architectures. The device may utilize one or more defined geospaces. If an event occurs in a geospace a predefined response may then be provided. The predefined response may include automatically targeting one or more cameras to areas relevant to the event and presenting one or more predefined views optimized for viewing the event. If an event does not occur within a geospace, the detection and response device may provide one or more default responses. | 01-20-2011 |
20120281091 | CONNECTION NODE PROVIDING SUPPLEMENTAL BANDWIDTH FOR MOBILE UNITS - A connection node provides a high bandwidth connection on demand to mobile units that are in need of increased bandwidth for data transfers. In this manner, the connection node can supplement the bandwidth available to a mobile unit so that large volumes of data can be communicated to and from the mobile unit. A movable antenna automatically focuses its reception area on the mobile unit's location, after which, a high bandwidth connection can be established for high-speed data transfer. The high bandwidth connection is maintained, such as by tracking the mobile unit with the antenna, even if the mobile unit is moving. | 11-08-2012 |