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| Number | Title | Issue Date |
| 7258196 | Noise attenuator with laterally moving baffles A silencer or sound attenuator for gas flows that makes use of noise baffles is provided with a lateral movement mechanism which allows the baffles to be moved perpendicular to the direction of the gas flow within the silencer. A silencer provided with the lateral m... | 08/21/2007 |
| 7240691 | Rotary bleed valve assembly A rotary bleed valve (10) for a gas turbine engine comprises a passage (11) connecting high pressure gases from a compressor to an exhaust and a valve member (12), the valve member (12) may be rotated within the passage (11)so as t... | 07/10/2007 |
| 7089958 | Damper vane A damper unit for an air circulation system. The damper unit includes a frame defining an air flow opening, a damper vane for opening and closing the air flow opening, and a drive mechanism for turning the damper vane between the open and closed positions. The vane ... | 08/15/2006 |
| 6966172 | Gas turbine exhaust passage and damper system for same A gas turbine exhaust passage is realized which may suppress the radiation of strong ultra low frequency noise to the outside without amplifying the turbulence of an high speed exhaust gas flow rate or a pressure pulsation generated in a gas turbine. At least a port... | 11/22/2005 |
| 6929447 | Steam line closing valve and steam turbine plant comprising such a steam line closing valve The invention relates to a steam line closing valve for closing a steam line, especially in a steam turbine plant between a first partial turbine and at least one second partial turbine that is operated at a lower pressure than the first partial turbine. According t... | 08/16/2005 |
| 5944506 | Burner assembly with tight shut-off opposed louver air damper An opposed louver air damper apparatus for controlling the flow rate of combustion air to a burner fire box, comprising a plurality of adjacent, rotatable louvers having rubber tips and side gaskets providing sealing between the louvers and a frame, and g... | 08/31/1999 |
| 5918632 | Single-louver damper with double seal A louver damper device for the control of fluid flow within a conduit. The louver damper device includes one or more louvers, wherein each louver is a single-walled pivotable unit. The ends of louvers that are adjacent to one another are designed with cou... | 07/06/1999 |
| 5765592 | Valve A valve body having a circular throat and three vanes mounted for rotation within the circular throat of the valve body. The three vanes comprise two outlying vanes, each having two opposed circular peripheral edges configured so that one of the two oppos... | 06/16/1998 |
| 5060557 | Smoke damper blade seal A smoke damper which includes a rectangular frame and blades mounted in the frame such moveable between a position in which all of the blades are essentially coplanar with adjacent edges of adjacent blades being contiguous one with another, and a position... | 10/29/1991 |
| 4932437 | Louver dampers for use in gas turbines exhaust systems and having blades protected against becoming warped Louver dampers for use in the exhaust system of gas turbines have flat blades each of which is provided with a lengthwise reinforcement spaced from the major portion of its face which is upstream when the damper is closed and has sides welded thereto adja... | 06/12/1990 |
| 4823836 | Dampers with leaf spring seals A leaf spring seal to effect sealing contact between such members as a damper blade and a frame consists of a set of leaf springs having their inner portions held together by clamping components of which one is a bar and the other the inner portion of a l... | 04/25/1989 |
| 4766807 | Damper blade seal A rectangular damper blade rotates about its longitudinal center line between an open and closed position to control the airflow entering an enclosure. Two longitudinal edges of the damper blade become positioned between two inlet edges of the enclosure a... | 08/30/1988 |
| 4664145 | Device for delivering a pressurized medium to a rotatable part A liquid feed device for conducting a pressurized medium from a stationary housing to a rotatable component is so constructed that the applied force of a sealing surface of a sliding shoe of the housing on the running surface of the movable structural com... | 05/12/1987 |
| 4545566 | Metal seals for damper blades There is disclosed metal seals for damper blades, preferably made of sheet metal, as well as the combination of the blade with the metal seal. The damper blade is pivotably mountable and has longitudinally extending edges which are formed to define a groo... | 10/08/1985 |
| 4493342 | Double louver damper A double louver damper for use in a duct system conveying hot gases and particles in order to permit safe entry to be made therein when servicing is required has a frame to be incorporated in the system. The frame has two parallel seals surrounding the fl... | 01/15/1985 |
| 4469132 | Damper apparatus A damper assembly for controlling the flow of fluid through a passageway is disclosed. The damper assembly comprises a rectangular frame (22) adapted to be fitted in a passageway. A plurality of damper blades (24) are supported for pivotal motion in the f... | 09/04/1984 |
| 4256143 | Shut-off damper A shut-off damper comprising a line of blades which are supported in a surrounding frame for rotary motion about substantially parallel axes to open or close an opening in the frame, and springy sealing strips each provided with a lining or cover of synth... | 03/17/1981 |
| 4253492 | System for controlling the flow of gaseous fluids A duct, presumably that of a utility boiler or the like, has a frame mounted on its internal walls. Parallel louver blades are mounted in the frame and linked for simultaneous actuation to move the louver-blades between a first position where they seal th... | 03/03/1981 |
| 4249571 | Air control mechanism having noise suppression means The invention provides an airflow control mechanism for use in an air duct for controlling airflow through the duct. The air flow control mechanism includes a frame positionable in the duct, and a plurality of blades supported by the frame and extending t... | 02/10/1981 |
| 4244397 | Shut-off damper A shut-off damper having blades of a generally streamlined shape with the trailing edges of the blades comprising fluid sealing means extending along those edges so that a seal is formed between adjacent blades when the blades are in their closed position... | 01/13/1981 |
| 4199898 | Closure apparatus with snap-in seal strips A snap-in metal strip, longitudinally bent into a V shape with the upper ends of both arms of the V being turned outward to the horizontal, thus creating longitudinal lips on the strip, is used to seal an elongate gap, for example a narrow space between a... | 04/29/1980 |
| 4187878 | Valve having internally pressurized sealing elements Disclosed is a valve especially adapted for the control of gases in large cross sectional ducts, flues, chimneys and the like. The valve comprises a plurality of elongated, vane-like closures which, when in closed position not only substantially stop the ... | 02/12/1980 |
| 4175582 | Isolating/pressure relief damper Described herein is a damper for controlling the passage of hot gases through a duct. The damper has a frame through which are passages. Along these passages coolant is passed to cool the frame and so reduce its thermal expansion as a result of the passag... | 11/27/1979 |
| 4077432 | Purged valve A valve assembly having a frame with a fluid flow opening therethrough; at least one blade mounted in the frame opening to be movable from a valve open position, in which fluid is able to flow through the frame opening, to a valve closed position, in whic... | 03/07/1978 |
| 4043258 | Louver linkage seal A plurality of linkage seals are provided in an air distribution vent having a plurality of movable louvers for directing an air stream. A common linkage connects the louvers together for simultaneous adjustment. The linkage seals prevent foreign matter i... | 08/23/1977 |
