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| Number | Title | Issue Date |
| 5152501 | Butterfly valve There is disclosed a butterfly valve having a stem which extends through a disc rotatable within a seat about an annular hub to open and close the valve. The stem and disc have flat sides which engage one another in order to rotate the disc within the ste... | 10/06/1992 |
| 5148831 | Bi-directional shaftless butterfly valve The present invention is a shaftless bi-directional butterfly valve that does not require a valve housing and may be mounted to a length of pipe by merely drilling a hole into the wall of the pipe. A stuffing box is attached to a pipe by a U-bolt or other... | 09/22/1992 |
| 5131626 | Housings for butterfly valves and method for manufacturing the same A housing arrangement for a butterfly valve including an annular valve housing, a valve rod rotatably and axially inserted through the valve housing, the valve rod crossing at right angles with a fluid passage, and a valve member in a substantially disk f... | 07/21/1992 |
| 5125624 | Apparatus for a disc-stem connection Disc-stem connection for a butterfly valve using interfitted slots on the disc and stem for mechanical connection. An oversize slot on the disc creates channels between the disc and the stem which allows deep penetration of a weld bead. Centralization of ... | 06/30/1992 |
| 5113910 | Butterfly valve with biased area reduction means A butterfly valve adapted for controlled variation in the area of the leading wing of the valve plate. The valve plate is comprised of two parallel plate-like members which are relatively translatable in mutually parallel directions. The relative translat... | 05/19/1992 |
| 5111775 | Cooling water temperature controlling apparatus A cooling water temperature controlling apparatus for an internal combustion engine comprises a butterfly valve placed in a cooling water passage for the internal combustion engine at a position between the inlet port of a radiator and the inlet port of a... | 05/12/1992 |
| 5106052 | Air damper apparatus Provided is a damper for controlling air flow through an air duct. The damper includes a mounting fame secured to the interior of the duct which has a circular opening for air flow therethrough when the damper is open. A circular damper plate is provided ... | 04/21/1992 |
| 5103858 | Valve and an atomization chamber A valve for an extraction device of a molten metal or molten alloy atomizing chamber comprises a valve member which is rotatably mounted in a pipe. The peripheral edge of the valve member has a groove in which is located a rubber seal. A protecting member... | 04/14/1992 |
| 5102097 | Butterfly valve with plural-fence modulator plate A flow modulator (48) for a butterfly valve (40) incorporates a first protrusion (64) on the high-pressure side (52) of the modulator and a second protrusion (66) on the low-pressure side (54). The second protrusion (66) is spaced from the leading edge (6... | 04/07/1992 |
| 5096156 | Motorized damper apparatus Motorized damper apparatus including a conduit, a damper blade movably mounted within the conduit between an open position and a closed position, and mechanism including a motor for moving the damper blade between the open and closed positions. The damper... | 03/17/1992 |
| 5092296 | Apparatus with a throttle device determining the output of a prime mover A throttle valve apparatus, including a throttle valve shaft that is actuated in an axial direction with the aid of a magnet toward a housing stop. The magnet is necessary in any case to actuate a clutch. The location of the throttle valve shaft is define... | 03/03/1992 |
| 5076308 | Indicator for measuring amount of valve opening An indicator for measuring the amount of closure of a valve with a valve handle mounted adjacent a valve bearing housing. A pointer for the indicator being mounted between the valve handle and valve bearing housing. To show the amount the valve is open th... | 12/31/1991 |
| 5071103 | Throttle-valve connecting piece A desired-value transmitter (2) is flanged onto a throttle-valve connecting piece (1), the desired-value transmitter having a setting shaft (5) aligned with a throttle-valve shaft (3). The setting shaft (5) engages in rotatable manner via a pin (9) into a... | 12/10/1991 |
| 5067506 | Flight craft with fluid systems which incorporate butterfly valves, and butterfly valve methods and apparatus A method for facilitating control of a butterfly valve, butterfly valves (40, 180) adapted for use with the method, and a fluid system (242) incorporating such valves are disclosed. All three use or incorporate butterfly valve structure that provides for ... | 11/26/1991 |
| 5029808 | Lock assembly for valve A locking construction for addition to an existing valve having a valve body, a flange on the valve body, a valve member in the valve body, a valve stem coupled to the valve member and extending through the flange for moving the valve member between vario... | 07/09/1991 |
| 5007613 | Valve and actuator apparatus allowing multiposition relationship An assembly which includes a linkarm joining a valve having a rotatable mounted first shaft on which a butterfly is mounted and a actuator having a second shaft which reciprocally moves in a linear path. The linkarm includes a plate having first and secon... | 04/16/1991 |
| 4981284 | Air control device for internal combustion engine In an air control device including a body, an air passage formed in the body, a throttle valve disposed in the air passage for controlling an air quantity flowing in the air passage, a throttle shaft for mounting the throttle valve and extending across th... | 01/01/1991 |
| 4969485 | Butterfly valve apparatus and method A butterfly valve includes a duct defining a fluid flow path and a plate-like valve member pivotal in the duct to in one position span and close the latter. The valve member is pivotal to a second position spanning the duct and extending parallel to the f... | 11/13/1990 |
| 4967778 | Butterfly valve apparatus and method A butterfly valve includes a duct defining a fluid flow path and a plate-like valve member pivotal in the duct to in one position span and close the latter. The valve member is pivotal to a second position spanning the duct and extending parallel to the f... | 11/06/1990 |
| 4964431 | Butterfly valve apparatus and method A butterfly valve includes a duct defining a fluid flow path and a plate-like valve member pivotal in the duct to in one position open and close the latter. The valve member is pivotal to a second position spanning the duct and extending parallel to the f... | 10/23/1990 |
| 4962783 | Butterfly valve apparatus and method A butterfly valve includes a duct defining a fluid flow path and a plate-like valve member pivotal in the duct to in one position open and close the latter. The valve member is pivotal to a second position spanning the duct and extending parallel to the f... | 10/16/1990 |
| 4944490 | Shaftless butterfly valve The present invention is a shaftless butterfly valve that does not require a valve housing and may be mounted to a length of pipe by merely drilling a hole into the wall of the pipe. A stuffing box is attached to a pipe by a U-bolt or other conventional m... | 07/31/1990 |
| 4938452 | Air control device for internal combustion engine In an air control device including a body, an air passage formed in the body, a throttle valve disposed in the air passage for controlling an air quantity flowing in the air passage, a throttle shaft for mounting the throttle valve and extending across th... | 07/03/1990 |
| 4917350 | Gasketless air damper A gasketless air damper includes a cylindrical sleeve having an inwardly protruding integral seal ridge. A circular blade damper disposed for rotation in the sleeve has integral oppositely oriented edge seals that aerodynamically interact with airflow thr... | 04/17/1990 |
| 4905647 | Throttle body A throttle body defining a passageway and including a throttle valve formed by a pivoting plate is profiled to include a venturi nozzle whose converging wall lies adjacent the path of the plate periphery. The radius, and other characteristics of the conve... | 03/06/1990 |
| 4880207 | Intake throttle valve return device of engine A cup-shaped spring holder having a flange on the outer periphery on the open end side is secured on the end portion of a valve shaft which protrudes outwardly from a carburetor barrel, with a clearance for coil insertion provided between the barrel and t... | 11/14/1989 |
| 4858517 | Fire damper kit A fire damper kit is set forth wherein a fire damper box is formed with a first framing angle iron fixedly secured thereto with a second angle iron slidable thereon to secure said damper and sandwich a fire wall between said opposed angle iron collars. A ... | 08/22/1989 |
| 4838481 | Draft control arrangement for venting of combustion apparatus In a bimetal-actuated damper a loop-shaped bimetal element engages a damper element. One end of the loop is fixedly fastened while the other end of the loop is movably connected with the damper element. This improves temperature-dependent response and sen... | 06/13/1989 |
| 4832238 | Oil spout An elongated flexible oil spout has one end portion provided with internal threads for engagement with external threads of a plastic oil bottle. An intermediate portion of the oil spout is formed from accordion fold snap-lock segments which connect to a c... | 05/23/1989 |
| 4826133 | Seal arrangement for flap valve In a flap valve, a casing is provided forming a flow opening through the valve. A flap is pivotally mounted in the casing for closing the flow opening. The casing is formed of two annular parts secured together by bolts. The two casing parts have a plane ... | 05/02/1989 |
| 4822001 | Positive fluid seal butterfly valve A butterfly valve for insertion between a pair of spaced flanges in a fluid flow passageway is disclosed as incorporating a tubular body having a pivotally mounted disc valve positioned in the fluid flow passageway for opened and closed positions thereof,... | 04/18/1989 |
| 4815693 | Valve with actuating handle operable in different quadrants A valve has a housing to which a 360 degree notch plate is integrally connected. A valve member mounted within the housing control fluid flows and rotates though substantially 90 degrees between maximally open and closed positions. A valve stem extends up... | 03/28/1989 |
| 4809948 | Butterfly valve assembly and method of making same A butterfly valve assembly and method of making the same are provided wherein such valve assembly has a valve body structure and a closure structure and is provided with a new device for locking, in its closed position, a shaft assembly which is used to o... | 03/07/1989 |
| 4786031 | Fiber reinforced thermoplastic butterfly valve element A disk element for a butterfly valve utilizing a flattened disk-like member which typically has diametrically opposed tubular sleeve insert members mounted therein, one of such insert members being noncylindrical. The disk element is comprised of fiber re... | 11/22/1988 |
| 4783052 | Composite article having insert A fiber reinforced composite article such as a valve element is provided with a reinforcing insert.... | 11/08/1988 |
| 4778151 | Sealing valve for air ducts A sealing device is provided for sealing the bearing journal area of a rotatable flap within the housing of an air guiding duct which sealing device allows for a reliable sealing, increased rotational mobility of the flap and a saving of material cost and... | 10/18/1988 |
| 4777977 | Composite butterfly valve housing A butterfly valve housing which is to be interposed between two sections of as conduit includes a metallic core body and a covering body of a high-rigidity synthetic plastic material which is molded around the core body to substantially completely encase ... | 10/18/1988 |
| 4774750 | Method of manufacture of a composite butterfly valve housing A butterfly valve housing which is to be interposed between two sections of as conduit includes a metallic core body and a covering body of a high-rigidity synthetic plastic material which is molded around the core body to substantially completely encase ... | 10/04/1988 |
| 4773625 | Corrosion-resistant overlay for the edge of butterfly valves An overlay for a valve disk of a butterfly or similar valve is formed from a strip of corrosion-resistant material. The strip is preferably profiled to conform to the edge of the disk and has an overall length less than the circumference of the disk. Both... | 09/27/1988 |
| 4770393 | Butterfly valve A butterfly valve comprises a valve housing (1) with an axial passage (4) for a fluid medium; a valve seat in the form of a seat ring (8) which is displaceable within a slot (7) in the valve housing in a radial direction relative to the axial passage, the... | 09/13/1988 |
