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| Number | Title | Issue Date |
| 7284563 | Surge relief apparatus and method A surge relief apparatus for sensing, tracking and responding to pressure changes in a flow system. The apparatus includes a fluid storage tank that is in fluid communication with the flow system. The apparatus also includes a control valve that is connected to the ... | 10/23/2007 |
| 7150777 | Method for recovery of by product gas in vacuum heat treatment A method and apparatus for the recovery of by product gases used in a vacuum metal treatment process or other gas treatments processes are disclosed. The present invention is normally carried out in a process chamber in the last stage of the process, after vacuum pr... | 12/19/2006 |
| 6820855 | Air flow control valve An air flow control valve including a valve body having an internal cavity and an inlet and outlet in flow communication with the internal cavity, the axes of the inlet and outlet being aligned at substantially 90° to each other, a valve seat located within the cav... | 11/23/2004 |
| 6516824 | Apparatus and method for metering delivery quantity of ultra-low temperature liquefied gas In the apparatus or method in accordance with the present invention, an ultra-low temperature liquefied gas is circulated in a flow path from a storage element 101 to the storage element 101, the loading quantity of flow and the return quantity of flow to... | 02/11/2003 |
| 6371347 | Air switch and palm guide for papermaking machinery An air switch including a housing, a lubrication port, a first air inlet port and an exhaust port is disclosed. The housing includes a chamber. The lubrication port is disposed to deliver lubrication into the chamber. The first air inlet port is disposed ... | 04/16/2002 |
| 5937894 | System and method for transporting a fluid susceptible to hydrate formation Method for producing and/or transporting by pipeline, from a location such as a reservoir to a point of destination, a multi-phase fluid susceptible to the formation of hydrates under given thermodynamic conditions. During production and/or transportation... | 08/17/1999 |
| 5368067 | Gas storage and recovery system A system for recovering and recycling gases is disclosed having, in one aspect, inlet and outlet flow lines and controllers with an inflatable enclosure which, in one aspect, has a series of one or more inflatable rib stiffeners which, in one aspect, are ... | 11/29/1994 |
| 5070900 | Safety valve actuator assembly An emergency shut-down system to close a gate valve in a pipeline and therefore terminate flow. The closing action is initiated when a pilot valve senses pressure in the pipeline outside predetermined limits. This reduces the signal pressure in the system... | 12/10/1991 |
| 4261387 | Pipeline surge relief system A pipeline surge relief system including a relief valve of the type that opens when line pressure exceeds pressure in a pilot chamber. A bleed valve, which is operable to evacuate the pilot chamber is opened when pipeline pressure acting against a diaphra... | 04/14/1981 |
| 3972364 | Pressure surge relief system A pressure surge relief system including a valve which is opened to relieve the pipeline when line pressure overcomes a pilot chamber pressure. A pilot load duct with a variable orifice device therein connects the chamber to the pipeline. In the event of ... | 08/03/1976 |