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Actor Marlon Brando has four patents, all named "Drumhead tensioning device and method."
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| Number | Title | Issue Date |
| 8132594 | Hydraulic valve actuated by piezoelectric effect A valve-actuator includes a chamber, a spool that opens and closes connections between ports in the chamber, an actuator including a housing containing a piezoelectric stack having a bore, and a spring contacting the spool through the bore and forcing the stack towa... | 03/13/2012 |
| 8104511 | Sequential stepped directional control valve A sequential stepped directional control valve accepts pressurized hydraulic fluid from a pressure port, and directs that pressurized fluid to a first stage port, or to both a first stage port and a second stage port. In the neutral position, the valve blocks the fl... | 01/31/2012 |
| 8096321 | Redundant electrohydraulic valve system An electrohydraulic valve assembly having an inflow channel, a working channel and an outflow channel, including first and second valves each having a magnetic regulating device for applying a regulated activation force to the respective valve. The valves are arrang... | 01/17/2012 |
| 8082953 | Solenoid valve assembly A solenoid valve assembly includes a bobbin supporting a coil and having at least one protrusion on an inner surface, an adjustment member disposed within the bobbin and in contact with the at least one protrusion, a pole piece disposed within the adjustment member,... | 12/27/2011 |
| 8037901 | Solenoid valve having a hollow cap mounted on a leading end of a movable iron core A solenoid valve that is constructed as follows: a cap is mounted on a movable iron core such that forward movement thereof is restricted; a pressing member is displaceably arranged between abutting seat surfaces of the cap and the movable iron core; biasing forces ... | 10/18/2011 |
| 8011388 | Thermally actuated microvalve with multiple fluid ports A MEMS device is disclosed having a single microvalve actuator for controlling multiple microvalves. Exemplary embodiments include a MEMS device including two microvalves formed on a beam positioned by an actuator, the two microvalves controlling separate flow paths... | 09/06/2011 |
| 8006718 | Electric spool valve A sleeve has an input port, an output port, an insertion hole, and only one discharge port. A spool is axially slidable through the insertion hole to communicate among the input port, the output port, and the discharge port. An electric actuator is provided to one e... | 08/30/2011 |
| 7987871 | Switching valve A selector valve, comprising a valve chamber having a first valve seat and a second valve seat facing the first valve seat, a first fluid passage communicating with a first valve port on the periphery of the first valve seat of the valve chamber to flow a first work... | 08/02/2011 |
| 7971607 | Electromagnetic hydraulic valve An electromagnetic hydraulic valve (1) is provided having a magnetic armature (8) which is guided in a longitudinally movable fashion in an armature guide (9) and activates a valve push rod (15) which extends in a valve housing (14... | 07/05/2011 |
| 7845370 | Equalization of pressure in an electronically controlled valve Disclosed herein is an electronically controlled valve. The electronically controlled valve includes a valve body and a spool. The valve body includes at least one fluid inlet port, at least one fluid outlet port, an upper cavity, and a lower cavity. The spool is di... | 12/07/2010 |
| 7766042 | Direct operated cartridge valve assembly A cartridge valve assembly includes a body having a central bore, a first port, a second port, and a third port fluidly connected to the central bore. The cartridge valve assembly further includes a main spool positioned within the central bore and being movable bet... | 08/03/2010 |
| 7730906 | Solenoid with path converter A solenoid including an armature movable in an armature room and a coil which can be flowed through by current. When it is flowed through by current the armature moves. The armature interacts with an armature bar. A path converter is provided between the armature an... | 06/08/2010 |
| 7717132 | Hydraulic valve actuated by piezoelectric effect A valve-actuator for a hydraulic valve includes a valve chamber, ports spaced mutually and opening into the chamber, a spool axially located in the chamber for opening and closing hydraulic connections between at least two of the ports as the spool moves axially in ... | 05/18/2010 |
| 7686038 | Solenoid valve with fitted shoulder Solenoid valve for controlling the flow of a fluid in a hydraulic circuit, comprising a valve body having at least one fluid duct, a stopper for allowing or preventing the flow of fluid in the fluid duct, a mechanical connection to actuate the stopper, an electromag... | 03/30/2010 |
| 7647943 | Solenoid with control cone A solenoid including an armature movable in an armature room, and a coil which can be flowed through by current. When flowed through by current the armature moves. The armature immerses in a control cone. The mean gap width between the armature and the control cone ... | 01/19/2010 |
| 7556062 | Solenoid valve with integrated structure A solenoid valve and method has a simplified structure that integrates the fluid metering functions of the spool in the armature, thereby eliminating the need for a separate spool, bearings, and pin in the valve. The armature has a aperture that communicates with at... | 07/07/2009 |
| 7523763 | Three-port electromagnetic valve A valve body includes a poppet type valve member disposed therein and a through hole formed thereto wherein first and second cylindrical synthetic resin retainers are fitted to the through hole. Valve seats are disposed to the end walls of both the retainers confron... | 04/28/2009 |
| 7513272 | Solenoid valve A solenoid valve comprises a solenoid portion 10 and a valve portion 20. The solenoid portion 10 is constructed by a stator core 12, an electromagnetic coil 14 and a plunger 15. The valve portion 20 is constructed by ... | 04/07/2009 |
| 7503347 | Linear solenoid valve A linear solenoid valve includes a solenoid having a coil wound around a coil bobbin, a fixed core, and a movable core for being attracted to the fixed core when the coil is energized, and a valve mechanism having a valve element for selectively bringing an inlet po... | 03/17/2009 |
| 7487798 | Linear solenoid valve A bottom of a housing has a protruding support extending a predetermined distance toward a movable core, and the movable core has an annular boss extending a predetermined distance toward the housing. The annular boss is disposed in an annular space defined between ... | 02/10/2009 |
| 7481242 | Solenoid-operated directional control valve Directional control valve, in particular a hydraulic 3/2-way directional control valve, having an actuating unit (1) and a valve unit (2), which is operatively connected to the actuating unit and in which a valve element (9), displaceable by the... | 01/27/2009 |
| 7458395 | Low leak poppet solenoid A dual poppet low leak variable bleed solenoid valve, including a solenoid portion with an adjustable end cap disposed through the solenoid. Exhaust ports are disposed about the end cap. A hydraulic portion has a valve housing that is connectable to the solenoid por... | 12/02/2008 |
| 7438091 | Construction machine The present invention relates to a construction machine having a working oil tank and a switching valve to open/close the pilot line of the hydraulic pressure control system, the return oil from the switching valve being put back to the tank at the bottom through a ... | 10/21/2008 |
| 7370669 | Electromagnetic valve Disclosed is an electromagnetic valve in which a force due to a working fluid from an inflow hole acting perpendicularly with respect to the axis of a shut-off valve is reduced to thereby reduce the sliding resistance of the shut-off valve. An electromagnetic valve ... | 05/13/2008 |
| 7367473 | Circuit for dispensing fluid products, in particular colouring agents, paints or similar fluid products A circuit for dispensing fluid products, in particular coloring agents, paints and the like, comprises a pump (12) for delivering a fluid product, which pump can be activated selectively to send the fluid product to a dispensing duct (16) and a valve (... | 05/06/2008 |
| 7367357 | Solenoid ball valve with bypass orifice On/off solenoid ball valves of the invention comprise at least one inlet port; at least one pressure control outlet port; at least one exhaust port; at least one check valve positioned between the pressure control outlet port and the exhaust port; and at least one b... | 05/06/2008 |
| 7364483 | Marine reversing gear assembly The present invention provides a marine reversing gear assembly, wherein a manual directional control valve 7a and an electromagnetic directional control valve 7b for a forward/reverse directional control valve 7 for hydraulic oil ... | 04/29/2008 |
| 7351179 | Stepper motor driven proportional actuator A low energy stepper motor driven actuator that eliminates the need for a position sensor is provided. The stepper motor rotates a cam in a control piston valve. The cam rotation increases the gap between the cam and nozzle on one side of the cam and decreases the g... | 04/01/2008 |
| 7347221 | Solenoid valve A valve assembly comprises two valves and a single solenoid actuator with only one magnetizing coil that controls both valves. The corresponding magnetic circuit comprises a yoke with only two pole pieces. The valves are arranged concentric to one another. The valve... | 03/25/2008 |
| 7341072 | Oxygen supply system having a central flow control unit The present invention is a centralized flow control unit (CFCU) for regulating oxygen flow in a multiple user emergency oxygen distribution system in passenger aircraft. Upon activation, the CFCU initially allows unregulated flow of oxygen to surge into the distribu... | 03/11/2008 |
| 7337806 | Stepper motor driven proportional fuel metering valve A low energy stepper motor driven fuel metering valve (FMV) that eliminates the need for a position sensor is provided. The stepper motor rotates a cam that replaces the flapper valve used in conventional systems. The cam rotation increases the gap between the cam a... | 03/04/2008 |
| 7331565 | On/off solenoid A solenoid control valve is described wherein the valve employs a precision molded plastic valve seat member, a corresponding control valve body which includes flying buttresses for supporting and distributing loads on the control valve body, and armature vent featu... | 02/19/2008 |
| 7328688 | Fluid pumping apparatus, system, and method A fluid pumping apparatus, system, and method are disclosed in which an apparatus according to one embodiment of the invention comprises a housing, an inlet through which the fluid enters the housing, an outlet through which the fluid leaves the housing, a valve com... | 02/12/2008 |
| 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 |
| 7322376 | Piezoelectric valve A piezoelectric valve has a flexural transducer accommodated in a valve housing and having a free ending cantilever operational section able to be deflected by electrical control. The operational section extends over two controlled valve openings lying on the same s... | 01/29/2008 |
| 7320335 | Electrohydraulic control device A electrohydraulic control device H for the direction control of a hydro-motor, particularly for working pressures u to more than about 450 bar in a portable working device, comprises working lines A, B and a pressure line P and a respective load holding valve LA, L... | 01/22/2008 |
| 7320457 | Electroactive polymer devices for controlling fluid flow The invention describes devices for controlling fluid flow, such as valves. The devices may include one or more electroactive polymer transducers with an electroactive polymer that deflects in response to an application of an electric field. The electroactive polyme... | 01/22/2008 |
| 7309113 | Flow control system for a valve A fluid-flow control system for a valve comprises a valve body and a bi directional main flow passage between a first and second fluid areas. The shuttle piston having a first face in direct communication with the second area and a second face in communication there... | 12/18/2007 |
| 7294278 | Method for oxygenating wastewater A method and apparatus creates gas-enriched fluid that is used to treat wastewater. In one embodiment, the wastewater is withdrawn from a supply of wastewater to be treated, and the wastewater is delivered in an atomized manner to a vessel pressurized with gas to fo... | 11/13/2007 |
| 7280048 | Process control loop current verification A process device is configured for coupling to a two wire process control loop. Loop current output circuitry is configured to apply an output current to the two wire process control loop. Loop current verification circuitry is coupled to the two wire process contro... | 10/09/2007 |
