Celebrity Inventors
Mark Twain (Samuel L. Clemens) received Patent No. 121,992 for "An Improvement in Adjustable and Detachable Straps for Garments." He later received two more patents: one for a self-pasting scrapbook and one for a game to help players remember important historical dates.
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| Number | Title | Issue Date |
| 7334771 | Device for locking and/or sealing a conduit The invention relates to a blocking apparatus for blocking and/or sealing off a line for transporting—preferably hot—media, in particular dust-laden gases, preferably for blocking and/or sealing off a line for transporting hot gases which may be laden with solid... | 02/26/2008 |
| 7322375 | High bandwidth rotary servo valves A valve includes a rotating, substantially pressure-balanced spool that selectively aligns openings within the spool with openings within a sleeve to selectively connect ports of a manifold for gas or liquid routing. A valve may also include a stem, a needle coupled... | 01/29/2008 |
| 7316384 | Electric control valve The electric control valve, in which a throttled flow rate is quantitatively determined by the groove 16 by a rotating position of the valve body 20, the valve seat surface projects like a band from a border band 16C drawing an outline of the gr... | 01/08/2008 |
| 7231940 | Control valve for a hydraulic power steering system A control valve for a hydraulic power steering system includes a pair of flow circuits arranged in parallel. Each flow circuit includes an upstream and downstream flow orifices arranged in series. Each set of orifices defines between the orifices an intermediate pre... | 06/19/2007 |
| 7152627 | Control valve for a hydraulic power steering system A control valve for a hydraulic power steering system includes a pair of flow circuits arranged in parallel. Each flow circuit includes an upstream and downstream flow orifices arranged in series. Each set of orifices defines between the orifices an intermediate pre... | 12/26/2006 |
| 7140342 | Slotted cylindrical tube rotary valve assembly This invention is a slotted cylindrical rotary valve assembly for an internal combustion engine, comprising of two sets of gear driven slotted cylindrical tubes in a cradle apparatus. Each set has two tubes located co-axially and rotates co-axially, and each tube is... | 11/28/2006 |
| 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 |
| 6951317 | Vehicle, lightweight pneumatic pilot valve and related systems therefor A vehicle, such as a missile, with a pilot valve system controls the vehicle's thrust valves despite a hostile propellant gas environment. The pilot valve system can have one or more pilot valves. Using refractory elements, the pilot valve ball reciprocates between ... | 10/04/2005 |
| 6929243 | Butterfly valve The butterfly valve comprises a disk which is provide with at least one protuberance over at least a portion of at least one of its faces. Quite unexpectedly, the use of such a disk makes it possible to improve considerably the quality of the cleaning of the valve a... | 08/16/2005 |
| 6808162 | Rotary 2-way servovalve A rotary two-way servovalve provides a continuously variable orifice size in response to an input rotation while minimizing actuation torque. The valve is comprised of a cylindrical spool which is fitted to and rotates within a bore in a body. Fluid is fed into an a... | 10/26/2004 |
| 6708691 | Valve and oscillator for producing a pressure waveform A valve for controlling gas flow to ventilator or physiotherapy apparatus, has a body having first and second inlet ports and an outlet port. A shutter plate is rotatable with respect to said body and adapted selectively to interconnect said inlet ports to said outl... | 03/23/2004 |
| 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 |
| 6484999 | Plug valve internal pressure balancing The preferred embodiment comprising a truncated cone valve plug, or a truncated cone with curved sides as in the tractrix valve is described. A step is fabricated into the large end of the valve plug. A secondary seal, called a Veri-Seal, is placed on the... | 11/26/2002 |
| 6470913 | Balanced rotary servovalve A rotory servovalve is constructed with a cylindrical annular housing and a cylindrical valve element rotatable therewithin. The valve housing has at least two inlet orifices, at least two outlet orifices, at least two first fluid transfer control orifice... | 10/29/2002 |
| 6427722 | Rotary slide set for a hydraulic steering arrangement The invention concerns a rotary slide set for a hydraulic steering arrangement with an outer rotary slide and an inner rotary slide arranged in the outer rotary slide, and having in its surface tank grooves, which are, at least in predetermined rotary pos... | 08/06/2002 |
| 6173940 | Valve ball configuration A valve ball physically configured to minimize rotational forces imparted to the ball by fluid pressure acting thereon in flow throttling positions of the ball. In part, the physical configurations that produce the desired effect include a hollowed out ba... | 01/16/2001 |
| 6145540 | Rotary solenoid valves for vehicular applications A rotary solenoid valve for controlling pressurized fluid in a vehicular hydraulic system includes a housing having a bore. A valve body is mounted in the bore. The valve body includes an axial bore in fluid communication with a supply port, an output por... | 11/14/2000 |
| 6113359 | Axial piston pump and relieved valve plate therefor A hydraulic unit including a housing (10,11,13) within which is disposed a rotating cylinder barrel (25) driven by an input shaft (21). The housing means includes an end cap (13) disposed adjacent the end (45) of the cylinder barrel, with a valve plate (3... | 09/05/2000 |
| 6053204 | Regulation disc valve with discharging device A regulation disc valve with discharging device comprises a body (1) containing an easily removable fixed seat (2) with peripheral ports (3) and a central channel (13); a rotary disc slide (4) with notches and a central longitudinal aperture constantly en... | 04/25/2000 |
| 5979501 | Fluid distributing apparatus for piston-type hydraulic motors or pumps Fluid distributing apparatus for radial piston-type hydraulic pumps or motors is disclosed. In the apparatus, a valve casing is mounted to a housing of the pump or motor. A plate valve is seated in the central portion of the valve casing and selectively r... | 11/09/1999 |
| 5901737 | Rotary valve having a fluid bearing An improved rotary valve having a gas bearing which prevents contact between the rotating piston and the cylindrical housing. The same working gas which the rotary valve controls is accumulated in an accumulation chamber. Fluid flow passageways, having a ... | 05/11/1999 |
| 5868165 | Rotary metering-pin servovalve and method of manufacturing the same A rotary servovalve having a cylindrical spool (18), which rotates through a limited angle, positioned within a housing (16). The spool and housing have transverse holes through both parts with matching position and diameter. The holes in the housing form... | 02/09/1999 |
| 5779222 | Tapered plug valve A tapered plug valve having a plug provided with a separate drive shaft and formed with a channel not connected to the plug but connecting the ends thereof to enable pressure equalization. The channel may be formed by being directly drilled through the pl... | 07/14/1998 |
| 5664761 | Disk valve A disk valve for a fluid under pressure, inside a housing (10), and comprising one, fixed plate cam (26), which has one port (32). A second, rotatable plate cam (34) which also has a port (36) is mounted above the fixed disk cam (26). The ports (32, 36) a... | 09/09/1997 |
| 5623966 | Flow control choke with shutoff seal A choke 10 for controlling the flow of fluid along the pressurized flow line includes a body 12 having a fluid inlet aligned with a fluid outlet. A stationary outer sleeve 64 is secured within the body, and has radially opposing sleeve flow ports 102, 104... | 04/29/1997 |
| 5597014 | High-flow direct-drive rotary servovalve A rotary valve (10) is adapted to be associated with a fluid source (P) and a fluid return (R), and is adapted to control the flows of fluid (via control ports C1 and C2) with respect to the opposed chambers of a fluid-powered load. ... | 01/28/1997 |
| 5531247 | Temperature and pressure resistant shutoff valve The float-controlled shutoff valve has an upright flow passage controlled by a transverse valve spool rotated between open and closed positions by the float in response to changing levels of liquid within the holding tank. The spool has a deep, generally ... | 07/02/1996 |
| 5392813 | Integral bleed system for valve A unified block integral bleed system for use with valves such as plug-type valves wherein pressure release flow occurs through a manifold port mounting arrangement which accesses upstream, downstream and body cavity portions of the valve and provides atm... | 02/28/1995 |
| 5385332 | Flow stabilized, retractable seal, double-block and bleed plug valve Fluid pressure changes are imposed on selected interior surfaces of a plug passageway of a plug valve to create torque. In one embodiment perturbations are provided in selected flow surfaces of the valve plug to create turbulent boundary layer flow along ... | 01/31/1995 |
| 5327935 | Three-way valve with pressure balanced plug member A three-way valve for high pressures and having a plug member rotatable within a valve housing. A seal arrangement is offset from the plug member to define a space in which system fluid pressure may be trapped for the purpose of acting on the plug member ... | 07/12/1994 |
| 5307838 | Rotary valve assembly A rotary valve assembly is disclosed in which a rotary valve member is located within a casing having one or more fluid inlets and a plurality of fluid outlets. The rotary valve member has a fluid conduit which extends in a generally radial direction and ... | 05/03/1994 |
| 5301922 | Change-over valve means for a hydraulic clutch of the marine propulsion unit A marine outboard drive having an outboard drive unit that includes a bevel gear forward, reverse transmission having hydraulically operated clutches. A hydraulic pump for actuating the clutches and for lubricating the transmission is driven off the rear ... | 04/12/1994 |
| 5207241 | Liquid shut-off valve A liquid fuel shut-off valve for insertion through the feed pipe opening and mounting inside a fuel tank including, in combination, a valve body having an inlet and an outlet joined by a first bore aligned axially with the feed pipe through which the fuel... | 05/04/1993 |
| 5205320 | Flow rate control unit A flow rate control unit equipped with inner and outer dual cylinders in the housing of the unit, wherein the inner cylinder is normally urged by an elastic member to change the position of the upper section of the inner cylinder depending upon the balanc... | 04/27/1993 |
| 5178363 | Valve stem sealing means for prevention of fugitive emissions A valve stem sealing means comprising first and second seal assemblies, the first seal assembly being proximate a valve plug and comprising an expandable ring adapted to be expanded by pressure within the valve to effect a first seal around the valve stem... | 01/12/1993 |
| 5129624 | Valve stem sealing means for prevention of fugitive emissions A valve stem sealing means comprising first and second seal assemblies, the first seal assembly being proximate a valve plug and comprising an expandable ring adapted to be expanded by pressure within the valve to effect a first seal around the valve stem... | 07/14/1992 |
| 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 |
| 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 |
| 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 |
| 5052657 | Ball valve A kelly valve includes a ball valve structure (10) having a ball valve member (40) with a central bore (42) therethrough mounted within a valve chamber (38) for rotation between open and closed positions. A fluid pressure equalizing opening or port (60) i... | 10/01/1991 |
