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| Number | Title | Issue Date |
| 8172198 | Valve assembly for aircraft water supply system A valve assembly (20) for an aircraft water supply system. The valve assembly (20) comprises a valve member (40), an electrical motor (64), and a mechanical returning mechanism (80). When electrical power is provided, the motor ( | 05/08/2012 |
| 8167266 | Clutch apparatus for electric valve actuator A clutch apparatus for an electric valve actuator, in which, where a manual handle is operated by an operator in a state that a power supply is stopped in a main motor, a coupling state between the manual handle and the main motor is released and the main motor is s... | 05/01/2012 |
| 7789370 | Actuator system An actuator system including a shaft, elements arranged to power the shaft and at least one actuated member actuated by the elements arranged to power the shaft. The elements arranged to power the shaft include a plurality of transverse flux motors. ... | 09/07/2010 |
| 7665714 | Fail safe mechanism for valve using a cock and lock return spring A fail safe mechanism having a return member, valve stem extension, energy storage member, and locking assembly. The valve stem extension is driven by an electrical actuator and configured to drive the return member in a first direction and to be driven by the retur... | 02/23/2010 |
| 7367540 | Fast closing clamp The invention relates to a fast closing clamp for the pinching off of hoses, wherein the fast closing clamp has a clamp jaw with a clamping position, in which it can pinch off a hose, and an open position. The fast closing clamp in accordance with the invention furt... | 05/06/2008 |
| 7321208 | Driving apparatus A driving apparatus for driving a functional body mounted on a vehicle comprises a power supply, an electric motor, and a driving means. The electric motor is connected to the power supply and is started by a power feed from the power supply. The driving means has a... | 01/22/2008 |
| 7287595 | Electric-hydraulic power unit The present invention is directed to an electric-hydraulic power unit. In one illustrative embodiment, the power unit comprises a body having a movable pressure barrier positioned therein, the movable pressure barrier defining first and second chambers therein, a co... | 10/30/2007 |
| 7258323 | Variable radial flow rate control system A variable radial flow rate control valve including a body forming a bore along the longitudinal axis thereof for transporting a fluid through the body, a fixed choke member fixedly positioned about the bore, the fixed choke member forming a fixed aperture, a rotati... | 08/21/2007 |
| 7231842 | Actuating device An actuation device for adjusting a powered control device opposite the adjusting direction. The actuation device comprises an actuation element axially displaceable in a housing by a feed device at least in the adjusting direction. The actuation device includes an ... | 06/19/2007 |
| 7134672 | Failsafe actuator A failsafe actuator is provided for returning an actuator driven element to a failsafe position in case of a failure condition. The actuator includes a drive assembly for driving a plunger from a first plunger position to a second plunger position. The actuator addi... | 11/14/2006 |
| 7017882 | Valve assembly A valve assembly includes a valve stem which is connected with a valve. A drive member is disposed in engagement with the valve stem. A gear assembly is operable to rotate the drive member to effect axial movement of the valve stem. The gear assembly is driven by an... | 03/28/2006 |
| 7007923 | Valve unit for controlling the delivery of a fuel gas A valve unit for controlling the delivery of a fuel gas through a delivery duct (3) comprises a valve seat (6) in the duct, a closure member (5) associated with the seat, a motor-driven actuator (7) acting on the closure member in order t... | 03/07/2006 |
| 6997430 | Fail safe valve The invention concerns a fail-safe valve having a valve element, and a control motor being connected with the valve element via a driveline. It is endeavored to ensure the tightness of the refrigeration system in a simple manner. For this purpose, it is ensured that... | 02/14/2006 |
| 6998724 | Power generation system A system for generating an electrical power output from a subsea installation that includes at least one flowline, wherein the system includes a turbine that is operatively connected to the flowline, the turbine being rotatable by fluid flowing through the flowline,... | 02/14/2006 |
| 6925986 | Servo-assisted butterfly valve for an internal combustion engine provided with an adjustment system for the limp-home position A servo-assisted butterfly valve for an internal combustion engine comprising a valve seat, a butterfly body engaging the valve seat, a shaft on which the butterfly body is keyed, an electric actuator coupled to the shaft, an elastic member which is adapted to exert... | 08/09/2005 |
| 6772992 | Memory cell structure integrated on semiconductor This invention relates to a memory cell which comprises a capacitor having a first electrode and a second electrode separated by a dielectric layer. Such dielectric layer comprises a layer of a semi-insulating material which is fully enveloped by an insulating mater... | 08/10/2004 |
| 6769665 | Electric valve actuator with failsafe apparatus An electric valve actuator with a failsafe device for a rotary type valve that is coupled to a drive shaft screw by means of a clutch. A cam cylinder is secured to the drive shaft screw and is also connected to the stem of the valve. A cam follower is slidably mount... | 08/03/2004 |
| 6661702 | Double gate DRAM memory cell having reduced leakage current A dynamic random access memory (DRAM) cell and associated array are disclosed. The DRAM cell (300) includes a storage capacitor (304) and a pass transistor (302). The pass transistor (302) includes a source region (322), drain region (320) and channel reg... | 12/09/2003 |
| 6651952 | Two position rotary actuator incorporating DC solenoid A method and apparatus for controlling a ventilation damper unit utilizing a direct coupled two-position rotary damper actuator with a DC solenoid is disclosed. The actuator acts to rotate the output coupling, and in turn, the damper shaft to open the dam... | 11/25/2003 |
| 6622984 | Electronic throttle body with low friction default mechanism An electronic throttle control system having a housing and cover member with a throttle valve, gear mechanism, motor, and failsafe or default mechanism. A spring member positioned between the housing and sector gear member which is attached to the throttl... | 09/23/2003 |
| 6186471 | Electronic motorized zone valve An valve actuator in a hydronic heating and cooling system includes a motor for changing the position of a valve, a switch for switching power to the motor, and a sensor for detecting the arrival of the valve at a desired position and for stopping the mot... | 02/13/2001 |
| 6129333 | Spring locking mechanism Apparatus for rapidly changing the state of a device from an active state to an inactive state. The apparatus includes an inner member slidably contained in an outer member. The member is connected to an actuator and the other to a control for changing th... | 10/10/2000 |
| 6123093 | System for controlling fluid flow A system for regulating flow of fluid through a flow line, such as a supply line, the line having a flow controller such as a valve, the system having a sensor for generating a signal in response to a parameter, a transmitter for transmitting a correspond... | 09/26/2000 |
| 6097123 | Brake and stall detector for a motorized actuator An actuator for an HVAC system includes a motor coupled by an electrically operated clutch to a gear train which drives an output connector. A spring is connected to the transmission to drive the output connector to a normal position in the event of a pow... | 08/01/2000 |
| 5984260 | Electrically driven actuator with failsafe feature A valve actuator preferably driven by an electric motor is disclosed. The valve actuator is useful with surface safety valves and uses power input from an electric motor to position the valve in its normal position. A mechanism is provided to allow the va... | 11/16/1999 |
| 5497672 | Valve actuator A valve actuator comprises a stem extending through the actuator body for coupling to a valve such that axial movement of the stem opens and closes the valve. An outer shaft is arranged coaxially around, and in threaded engagement with the stem and is cou... | 03/12/1996 |
| 4997069 | Electromotive drive for a control element There is provided an electromotive drive for a control element, the overall drive is without self-inhibition, for which purpose its screw transmission has rolling elements in the thread, and the drive motor is a rotating field magnet. Provision is made fo... | 03/05/1991 |
| 4920811 | Fail-safe release actuator mechanism A mechanical actuator for moving a shaft axially has a motor driving a gear assembly giving a mechanical advantage of at least 30:1, preferably 50 to 150:1. The assembly drives an internally screw threaded sleeve on external screw threads of the shaft so ... | 05/01/1990 |
| 4757684 | Fail-safe electric actuator A fail-safe electric actuator, for use with a control mechanism such as a valve, is disclosed. The actuator device eliminates the possibility of the control mechanism being locked in operative position by the interruption of electric power, by automatical... | 07/19/1988 |
| 4741508 | Actuator for valve An actuator for a valve has an output shaft adapted to be connected directly to a rotary shaft of the body of a valve, the shaft being pivotally supported in a casing, a gear rotated in one direction only by a motor, an internal gear having outer peripher... | 05/03/1988 |
| 4694861 | Rotary pinch valve A random access rotary pinch valve for controlling fluid flow through a plurality of fluid conduits. The valve is adapted to receive and retain the fluid conduits and includes, for each of the conduits, a toggle mechanism comprising a piston and a toggle.... | 09/22/1987 |
| 4669578 | Motor driven valve The present invention generally relates to a valve mechanism and more particularly, to a motor driven valve arranged to open or close the valve through rotation of a valve body of the valve by the driving of a reversible motor, and having incorporated the... | 06/02/1987 |
