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| Number | Title | Issue Date |
| 7712724 | Dynamic ball valve sealing device for three-way valves A ball valve having improved sealing between the valve member and the valve body is presented. Improved sealing is realized by providing a sealing member that is allowed to float on the outer surface of the valve member in the closed position. By being able to float... | 05/11/2010 |
| 7377482 | Composite toroidal gasket ring for ball valves A gasket ring assembly for use with the rotating ball in a ball valve, the gasket ring assembly including a substantially L-shaped support and a toroidal elastomer gasket. The substantially L-shaped support includes a horizontal section and a vertical section. The h... | 05/27/2008 |
| 7335941 | Uniform channel programmable erasable flash EEPROM A new method to form a split gate for a flash device in the manufacture of an integrated circuit device is achieved. The method comprises providing a substrate. A film is deposited overlying the substrate. The film comprises a second dielectric layer overlying a fir... | 02/26/2008 |
| 7325783 | Valve seat edge relief profile A valve seat has an outer surface, a rearward end, a face and a forward end. A passage extends from the rearward end to the face. A valve element slidingly contacts the face. Stress relief flanges are located on the face in areas of high bearing stress. Each flange ... | 02/05/2008 |
| 7146941 | Rotary valve A rotary valve which can securely shut off a fluid flow without improving a working accuracy of an outer peripheral surface of a valve and an inner diameter portion of a body, and which has a simple and compact structure, wherein a gap is formed between the outer pe... | 12/12/2006 |
| 7134416 | Rotary valve seal The invention relates to a valve seal mechanism for a rotatable valve assembly that provides a sealing function between a rotating first valve element and a fixed second valve element as used in a rotary cylinder valve engine. In one embodiment the seal mechansim co... | 11/14/2006 |
| 7090575 | Air passage opening and closing device capable of preventing uncomfortable noise An air passage opening and closing device for controlling an air flow for air-conditioning a vehicle compartment which is adapted to reduce an uncomfortable noise generated when the opening degree of a door such as an air-mixing door is small is provided, wherein a ... | 08/15/2006 |
| 7073775 | Rotating check valve for compression equipment Methods and apparatus for controlling the flow through a compressor with a valve assembly comprising a rotating body having an outer surface. The rotating body is disposed within a valve cavity in the compressor. A non-contacting seal operates to limit the flow of f... | 07/11/2006 |
| 7069922 | Paintball marker internal reset system An internal reset system for paint ball markers. A hammer body as modified rearwardly to include an axial opening to receivably retain the forward head of a reset rod. The forward portion of the reset rod is thus free to reciprocate within the axial opening, but res... | 07/04/2006 |
| 7051996 | Plug-style air-conditioning service valve In a plug-style valve, such as an air-conditioning service plug-style valve, basically including a valve body, a stem, a retainer including a service fitting and a valve core, and a cap, the plug including an intermediate O-ring, between the valve body and the plug,... | 05/30/2006 |
| 6899128 | Half ball valve A half ball valve includes a body including cavity having an assembly opening, a stem opening formed at a side of the body opposite to the assembly opening to connect the cavity and the outside, and a first connection hole inclined with respect to an axis of the ste... | 05/31/2005 |
| 6843467 | Flap valve In a flap valve for controlling a gas flow, with a valve tube that conveys the gas flow and a valve flap, which is disposed in the valve tube, is non-rotatably supported on an adjustable flap shaft, and can be pivoted between an open position that maximally unblocks... | 01/18/2005 |
| 6837483 | Gate valve assembly A gate valve assembly includes a valve seat and a valve. The valve seat includes a passage opening and a contacting region surrounding the passage opening. The valve includes a groove located on a marginal region of the valve, and a sealing body positioned in the gr... | 01/04/2005 |
| 6719271 | Combination face and plug seal A combination face and plug seal for use in a balanced pressure valve having a valve housing and a valve plug movable within the valve housing between an open position and a closed position. The seal comprises a main body portion and an engagement portion integrally... | 04/13/2004 |
| 6718933 | Valve seal for rotary valve engine A valve seal for a rotary valve assembly for use in an internal combustion engine of the piston and cylinder type, the valve seal having a valve body member having a curved annular upper surface conforming to the spherical periphery of a spherical rotary valve, the ... | 04/13/2004 |
| 6695285 | Ball valve seat seal A ball valve (10) includes a body (A) having a passageway (12) extending therethrough with a ball member (B) disposed in the passageway and mounted for selective rotation between valve open and valve closed positions to control fluid flow through the valv... | 02/24/2004 |
| 6694749 | Rotary valve A multiple port rotary valve for flow switching comprises a rotor (2), a stator (7), a compressor supply (8) and a compressor return (6). Gas is supplied via the compressor supply throughout a switching cycle such that the rotor is lifted away from the st... | 02/24/2004 |
| 6668933 | Ball valve seat and support A ball valve assembly has a lower support, an upper seat, a spherical ball, and linkages for rotating the ball. The lower support has a spherical support surface for the ball. The lower support also has a pair of guides for maintaining alignment of the ba... | 12/30/2003 |
| 6655659 | One-piece sanitary seat ring A sanitary eccentric seat ring and corresponding method of installation and adjustment is provided. The seat ring includes a body having a first section, a second section, and a body central axis passing through the first and second sections. A first bore... | 12/02/2003 |
| 6651958 | Valve seat having a frusto-conical shape A valve including an at least partially spherical valve control member and a valve seat where the valve control member is rotatable within a valve housing to obturate and to open at least one opening of the housing by bringing a passage through the valve ... | 11/25/2003 |
| 6598851 | Valve for the control of large-section flows, in particular for compressors or the like Valve for the control of large-section flows with high operating frequency, and in particular for compressors or the like, comprising a flow aperture (102; 106) and a closure device (3; 8), said flow aperture comprising one or more orifices (102; 106) for... | 07/29/2003 |
| 6485000 | Device by ball valve A ball valve having a valve housing with an inlet and an outlet, a valve body with a bore and sealing bodies, and valve seats which are in sealing planes parallel to one another forming an oblique angle with the inlet and the outlet, and in which the seal... | 11/26/2002 |
| 6435474 | Non-contaminating gas-tight valve for semiconductor applications A non-contaminating gas-tight valve for controlling a flow of granular polysilicon. The valve has a spherical valve member formed from single-crystal polysilicon, so that any particles worn from the valve member during use will be non-contaminating polysi... | 08/20/2002 |
| 6427975 | Throttle body insert for intake manifold The present invention provides a throttle body assembly for an internal combustion engine. The assembly includes an insert having an opening and opposing bores arranged transverse to the opening. The insert is constructed of a first material, preferably a... | 08/06/2002 |
| 6398225 | Seal for a rotary valve for high temperature and high pressure fluids An improved seal for a rotary valve for high temperature and high pressure fluids. A removable seal member adapted for disposition between a valve body and a valve member rotatably disposed in the valve body is provided. In one aspect of the invention, th... | 06/04/2002 |
| 6378841 | Quarter-turn rotary plug valve with seats reciprocable during operation A method and apparatus for controlling fluid flow with a quarter-turn plug valve with seats operated to lift off the sealing surface of the plug prior to plug rotation and to reseat upon completion of plug rotation. One embodiment shown relates to a quart... | 04/30/2002 |
| 6332600 | Rotary valve apparatus A rotary valve is provided with an elliptical valve disc that seats against a seal element operatively mounted in an elliptically shaped depression formed in the rigid annular portion of a seal cartridge structure carried by the valve body. Due to the ell... | 12/25/2001 |
| 6296229 | Metal ball valves for gas An improved metal ball valve for gas comprises a shutter housing chamber in which are provided two opposite sides or flats allowing to define annular recesses in which shutter sealing gaskets are substantially integrally engaged. The shutter weight is adv... | 10/02/2001 |
| 6293517 | Ball valve having convex seat A valve includes a valve ball and a convex metal valve seat ring that abut along a circle in a metal-to-metal seal. At very high contact forces, the valve ball and/or the valve seat elastically deform to increase the contact area between them and thereby ... | 09/25/2001 |
| 6290207 | Electronic motorized zone valve A zone valve for use in a hydronic system, the valve including a ball element through which liquid flows in an axial direction, a valve casing enclosing a ball element, a valve seat in contact with the ball element and the valve casing, the valve seat hav... | 09/18/2001 |
| 6260821 | On/off valve for a paintball gun An on/off valve for a paintball gun comprises a valve body. The valve body includes a gas inlet to receive a gas from a compressed gas source and a gas outlet to transmit the gas to the paintball gun The valve body also contains a plug cavity for receivin... | 07/17/2001 |
| 6244567 | Segmented seat retainer for valves A retaining ring for a resilient valve seat carried on a movable valve member is provided in a plurality of segments which may be cast in an investment casting method. The ring segments may be identical in shape and may overlap one another, with threaded ... | 06/12/2001 |
| 6240946 | Switch valve A switch valve 10 is provided with an upper body 14 having a plurality of outlet ports 20A, 20B, and 20C and a lower body housing 16 with inlet port 18. The switch valve includes a ball member 22 which is rotatable within the switch valve body 12 for sele... | 06/05/2001 |
| 6217003 | Valve assembly having floating retainer rings A valve assembly including a valve housing having a fluid passageway extending through it. The fluid passageway has an inlet portion having a cross-section defined by a substantially annular inlet surface, an outlet portion having a cross-section defined ... | 04/17/2001 |
| 6217002 | Valve assembly having floating retainer rings A valve assembly including a valve housing having a fluid passageway extending through it. The fluid passageway has an inlet portion having a cross-section defined by a substantially annular inlet surface, an outlet portion having a cross-section defined ... | 04/17/2001 |
| 6206376 | Apparatus and method of sealing a valve against increasing fluid pressure A double lobed seal comprises first and second annular seals, each having a radially inwardly projecting annular lobe that engages against a sealing surface of a valve element in a valve housing to seal the valve element in its closed position. With incre... | 03/27/2001 |
| 6202983 | Valve seal structured to prevent circumferential slippage An annular valve seal is configured for use in rotational-type valve assemblies with valve housings having an internal annular groove adapted to receive a portion of the seal therein. The seal comprises an annular interior surface and an annular exterior ... | 03/20/2001 |
| 6158465 | Rotary valve assembly for engines and other applications A rotary valve assembly includes a housing for positioning on an engine of the piston and cylinder type. The housing includes an intake passage for conducting a working fluid to the cylinder and an exhaust passage for conducting the working fluid from the... | 12/12/2000 |
| 6149130 | Butterfly valves The valve includes a closure disc (34) sealable at its rim to a valve seat (18) so that in this position the seat (18) and rim define between them an annular space (54) which is connected to a port (60) by passages (54, 56, 58) extending through a mating ... | 11/21/2000 |
| 6116575 | Seat structure for ball valve A seat structure for a ball valve which includes a seat member formed by rolling up an alternate stack of a thin steel plate and a thin graphite plate. The seat member is provided with a fixture portion fixed into an inner periphery of the valve body and ... | 09/12/2000 |
