Did You Know...
...Daniel Webster invented a "bull plow" to pull out tree stumps. It didn't catch on because it was huge and required four oxen to pull it!
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| Number | Title | Issue Date |
| 8011639 | Poppet type flow control valve A valve of the invention includes a valve body having an inlet, an outlet, and a flow passage connecting the inlet and outlet, the inlet, the outlet and the flow passage being in general axial alignment within the valve body. A valve seat surrounds the flow passage ... | 09/06/2011 |
| 7815170 | Valve assembly having a reinforced valve seat A knife gate valve includes a reinforced valve seat which prevents displacement of the valve seat when the valve is opened and closed. The valve includes a valve body defined by a first and second body halves. The valve halves are assembled to define a flow path, a ... | 10/19/2010 |
| 7650905 | Emergency isolation valve apparatus An emergency isolation valve has a valve plug in a valve body connected to a pipeline. The valve plug is connected to a valve shaft around which a sector gear is provided and engaged with a rack of a piston rod in a cylinder. The piston rod has a piston at one end a... | 01/26/2010 |
| 7641241 | Method of corrosion protection at a welded pipe joint and resulting joint A pipe joint, and a method of forming a pipe joint between two metallic pipes which have been internally and/or externally coated with a material to prevent corrosion includes a spigot and a socket. The socket has, or is formed with, an internal circumferential groo... | 01/05/2010 |
| 7517376 | Reverse pulse cleaning of filter elements An air supply system and valve is disclosed which provides a reverse pulse of air for cleaning a filter element located in a filter house. A valve is also disclosed for use in the air supply system. The system includes a pressure vessel adapted to contain a volume o... | 04/14/2009 |
| 7419132 | Bladder valve A bladder valve (10) is disclosed which comprises a valve body (12) having an inlet (16), an outlet (14) and a flow passage (17) connecting the inlet (16) and the outlet (14). The bladder valve (10) also includ... | 09/02/2008 |
| 7219934 | Pipe coupling A pipe coupling for coupling the ends of pipe sections together end to end, wherein the coupling includes a barrel member, at least one coupling member, at least one elastomeric sealing ring, a tangentially extending bolt and interacting members. The barrel member s... | 05/22/2007 |
| 7158905 | Field replaceable sensor module and methods of use thereof A field replaceable sensor module having a housing, that is capable of being ready connected and disconnected to a multipurpose device The housing includes one or more input ports and one or more electtical interface connectors. One or more sensors are operatively c... | 01/02/2007 |
| 7116503 | Precision continuous surface guided optical module carrier and method of using same An optical module inspection circuit on an optical platform includes an optical module carrier for precisely aligning optical devices with optical interfaces of inspection equipment located at fixed positions in the optical module inspection circuit. The module-incl... | 10/03/2006 |
| 6061373 | Safety interlocking system for an optical fiber amplifier and pump source A safety interlocking arrangement for use with a doped fiber amplifier and its associated pump source(s). A pair of metallized jumper cables are used to interconnect the amplifier and pump source, where the physically connections to the housings are elect... | 05/09/2000 |
| 5978115 | Span management system for wavelength division multiplexed network A network communication system comprising an optical communication path and a plurality of network elements disposed along the optical communication path. A first network element coupled to the optical communication path includes a first processor and a f... | 11/02/1999 |
