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8104495 Versatile emergency shutdown device controller implementing a pneumatic test for a system instrument device  
A multi-functional or versatile emergency shutdown valve controller may be used in various different emergency shutdown configurations to enable the testing of different types and configurations of...
7802585 Transducer of an electrical input signal into pneumatic output signals  
In a transducer of at least one electrical input signal into two separate magnetic output signals for a pneumatic actuator, a pressure input is connected to a source of pressure and a setting unit...
7645418 Gas washing device  
A gas purge device for a metallurgical melting vessel includes a conically shaped ceramic body (2) in contact at its top side with heat contained in the melting vessel. The ceramic body has a...
7621293 Versatile emergency shutdown device controller implementing a pneumatic test for a system instrument device  
A multi-functional or versatile emergency shutdown valve controller may be used in various different emergency shutdown configurations to enable the testing of different types and configurations of...
7267137 Deadweight pressure standards using non-hysteresis sylphons  
A deadweight pressure standard provides improved measurement accuracy and repeatability. The standard includes a flow regulator having a first valve controlled by a first pair of non-hysteresis...
7234482 Servovalve with torque motor  
The servovalve with torque motor consists of a cylindrical case (3) in which an armature (1) is arranged on one end of an arm (16) and a orifice (18) closing a nozzle (19) with working liquid (2)...
7099235 Geophone and method of manufacturing a geophone  
A vibration transducer such as a geophone, comprising a central pole piece (110) with a magnet (112) and coil (118) concentrically arranged around it. The position of the magnet (112) is fixed...
6957656 Proportional solenoid valve and control method therefor  
In a proportional solenoid valve, a cylindrical valve seat member includes an input/output-side passage provided between an input port and a drain port and between an output port and the drain...
6880800 Pressure regulator  
A pressure regulator has a magnet component group provided with a metal housing in which a winding and an armature are arranged, a flange composed of a synthetic plastic material and connected in...
6799598 Solenoid valve circuit for automatic transmission  
In a two-way solenoid vale, a small diameter portion of a nozzle portion is fitted in a small diameter portion receiving part communicating with an output pressure oil passage and a large diameter...
6796322 Hydraulic pressure regulating valve  
A hydraulic pressure regulating valve for regulating a pressure in an automatic transmission of a motor vehicle, comprising a magnetic part which includes an electrically controllable coil, a coil...
6755205 Method to stabilize a nozzle flapper valve  
A method and apparatus to attenuate a flapper valve from oscillating is presented. An inertia tube is added to the flow path of the flapper valve nozzle, which effectively produces a stabilizing...
6467496 Single-adjustment, dual-null pressure setting for an electrohydraulic valve pilot stage  
An electrohydraulic valve pilot stage for controlling differential pressure is disclosed. The electrohydraulic valve pilot stage has a housing for protecting the valve; a first and second inlet...
6460558 Pilot stage or pressure control pilot valve having a single armature/flapper  
An improved pilot stage includes a flapper having first and second ends, first and second nozzles in fluid communication with the first and second ends, and a magnetic torque motor having a first...
6422532 Severe service valve positioner  
A valve positioner for adjusting the position of a valve is provided. The valve positioner includes a housing having a service cartridge port and a valve connector. The valve positioner also...
6397875 Pressure regulating method  
The pressure of hydraulic fluid which is supplied to the continuously variable transmission in the power train of a motor vehicle is regulated by an apparatus wherein an adjustable pilot valve can...
6378545 Electromagnetically actuatable hydraulic proportional valve  
An electromagnetically actuable proportional hydraulic valve (10) is described, which is distinguished in particular by a constant, low-wear operating performance. This is attained by means of a...
6295511 Apparatus for controlling and monitoring actuators with an open/close characteristic  
An apparatus for controlling and monitoring actuators with an open/close characteristic consists of a first unit having a drive switch unit for operating a drive force unit, at least one limit...
6202669 Self-aligning valve  
A valve, for example a valve for use in conjunction with a pneumatic pressure controller for controlling a load pressure in a volume, comprises an apparatus for aligning a pressure control valve...
6202670 Piezoelectric actuated poppet value to modulate pilot pressures and control main valve activation  
A piezoelectric actuated poppet valve is disclosed. The piezoelectric valve generally includes a valve body having multiple passages that provide fluid flow paths through the valve body. Flow...
6196249 Pressure regulating method and apparatus  
The pressure of hydraulic fluid which is supplied to the continuously variable transmission in the power train of a motor vehicle is regulated by an apparatus wherein an adjustable pilot valve can...
6079435 Current to pressure converter  
An electropneumatic motor includes an electrically energizable magnetic circuit with an armature resiliently suspended in the air gap defined between two opposed pole pieces of differing...
6019120 Single stage variable force solenoid pressure regulating valve  
A solenoid actuated valve for regulating the pressure of a pressurized fluid in a fluid control system in proportion to the current level of an electrical input signal including a nozzle housing...
5967172 Electric vacuum regulator valve  
An electric vacuum regulator has an enclosure containing an interior space and a solenoid assembly. An inlet port communicates the interior space to source vacuum. Vacuum communicated to the...
5965950 Device for controlling the injection location of washer solution  
A washer solution hose controlling device includes a car speed sensor and an electronic control device outputting a control signal in proportion to the car speed detected from the car speed sensor....
5906218 Electric-to-pressure converters  
A relatively compact and vibration-insensitive electric-to-pressure converter includes an annular flexure from which an annular electromagnetic coil depends into an annular gap defined by the pole...
5873946 Installation and a process for lubricating, cleaning and/or disinfecting conveyor belts  
An installation for lubricating, cleaning and/or disinfecting conveyor belts for containers, more particularly for foods, such as bottles, glasses, cans, bags and the like, comprising a central...
5810329 Control system for providing dual vacuum levels  
A solenoid-type control system is disclosed, particularly for operating the locking hubs of a four-wheel drive vehicle. A solenoid valve assembly or mechanism has a coil member, a tubular member...
5699824 Electrical-pneumatic system  
An electrical-pneumatic system has a controller which has an input terminal for a reference variable signal, an input terminal for a regulating variable or feedback signal and an output terminal...
5630440 Piezo composite sheet actuated valve  
A piezo-electrically actuated hydraulic valve has a nozzle type seat and a piezo-electric actuator in a plane orthogonal to the axis of the nozzle. The actuator includes a piezo-ceramic layer...
5617890 Electromagnetically operable pressure-regulation valve  
An electromagnetically operable pressure-regulating valve is proposed, in whose valve connection element (40) there is configured a choke bore (57, 57a to 57c). The choke bore (57, 57a to 57c),...
5595209 Fluid pressure regulator establishing a stable output fluid pressure  
A multi-stage pneumatic pressure regulator establishes a constant output pressure with a change in the output flow. The regulator includes a poppet valve connecting the input and output. A relief...
5593134 Magnetically assisted piezo-electric valve actuator  
A piezo-electrically actuated fluid control valve has a nozzle type seat, a magnet opposite from the seat, and a piezoelectric actuator in sheet form between the seat and magnet. The actuator...
5513832 Variable force solenoid valve  
A combined bearing/diaphragm seal for use in a solenoid valve assembly or the like is disclosed which provides a flexible fluid seal between the solenoid sub-assembly and the valve sub-assembly....
5474100 Electricity/air pressure converter  
An electricity/air pressure converter comprising a pair of housings, made of a soft magnetic material, in the middle of which pole pieces are disposed facing each other with an air gap therebetween...
5465757 Electro-hydraulic fluid metering and control device  
An electro-hydraulic fluid metering and control device with a position sensor having a plane of geometric symmetry. The control device includes a valve body with a plurality of ports and channels...
5443089 Hydraulic amplifiers with reduced leakage at null  
An improved fluid amplifier (39) is operatively arranged in a flow path extending between a source (28, 31) of pressurized fluid (Ps) and a fluid return (38) at a return pressure (R). The amplifier...
5400824 Microvalve  
A microminiature valve in multi-layered structure for switching or controlling fluid flows is proposed, having an inlet and a closing element. The inlet is embodied in a first layer in the form of...
5381817 Mechanical flexure for motion amplification and transducer with same  
A mechanical flexure element useful for motion amplification with a closed end and two legs extending therefrom in a general U-shaped configuration. One leg may be fixed and the other leg moved, or...
5291915 Adjustable pressure relief valve  
A pressure relief valve system is provided that makes it possible to provide numerous varied pressure relief functions with a minimum of structural changes. For this purpose, a standard...
5282489 Fluid pressure modulator  
A pressure modulator includes an electromagnetic coil wire wound about a hollow axle for developing a magnetic field when electrical current is applied to the wire, the hollow of the axle having an...
5257639 Electropneumatic positioner  
A transducer having an explosion-proof housing with a divider forming two compartments, and the divider having formed therein a well. A magnet and flapper arm arrangement is suspended within the...
5253676 Low Bernoulli force control orifice  
A controlled orifice for a hydraulic pressure control valve has a plunger and a conic orifice seat. The plunger has a head which forms a stagnation zone, and a rim with surfaces that define a sharp...
5230362 Compensated pressure controller  
A pneumatic pressure controller includes an actuator (50) and a throttling valve (12) for regulating a flow of gas (10). A pressure comparator (22) provides a modulated pressure signal (58) to the...
5215111 Method of performance improvement for an I/P servo  
A pneumatic servo comprises a motor having a shaft for rotation in response to an electrical signal. A cam is connected to the shaft for rotation therewith. The cam has an outer profiled periphery...
5207240 Self aligning nozzle for a flapper valve  
A self aligning nozzle for a flapper valve through which fluid at a controlled pressure is supplied to a servo system. The nozzle which is retained in a semi-spherical member and is adapted to be...
5105729 Controlled valve with automatic opening and aircraft with a valve of this type  
A controlled valve with automatic opening and an aircraft having a valve of this type. The controlled valve enables the regulation of pressures or flow rates. Furthermore, the control valve can...
5076314 Nozzle flapper mechanism  
A nozzle flapper mechanism includes an electrostrictive device, a plate member coupled to the electrostrictive device, a nozzle having an orifice facing the electrostrictive device or the plate...
5070898 Metering valve  
A valve including a valve body, a torque motor mounted on the valve body and including an armature, a metering arm connected to the armature and extending into a first bore in the valve body,...
5065979 Constant current vacuum regulator  
A vacuum regulator for automotive vehicles of the type having a computer-controlled exhaust gas recirculation (EGR) system. The regulator controls the vacuum signal provided to the EGR valve in...
Matches 1 - 50 out of 442 1 2 3 4 5 6 7 8 9 >