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Class 137/554 - Electrical


Subclass of Class 137 - Fluid handling
Definition: Apparatus in which electrical signal system means are used
No. of patents: 660
Last issue date: 04/30/2013


          6            
NumberTitleIssue Date
6874530Dosing unit and method for dosing liquid or gaseous educts for a fuel cell system
A metering unit for metering liquid and/or gaseous educts by means of a feed pump for a fuel cell system, including at least one lead line for delivering an educt flow, at least one control piston, and a differential pressure valve for regulating the educt flow; the...
04/05/2005
6866204End of valve motion detection for a spool control valve
A fuel injector system (10) includes a piezoelectric sensor (52) mounted along a spool valve axis (18) of the injector body (12). The piezoelectric sensor (52) is mounted within a spool valve stop (41). As the spool valve (
03/15/2005
6857449Multi-layer microfluidic devices
The present invention provides multi-layer microfluidic systems, by providing additional substrate layers, e.g., third, fourth, fifth and more substrate layers, mated with the typically described first and second layers. Microfabricated elements, e.g., grooves, well...
02/22/2005
6840273Manifold valve having position detecting mechanism
In a manifold valve, a magnet is mounted to a spool of a solenoid valve, magnetometric sensors and connecting pins to be brought into continuity with the respective magnetometric sensors are provided in a first recessed portion formed in a casing, a sensor connector...
01/11/2005
6832630Adjustable air supply valve of air cushion bed
An adjustable air supply valve of an air cushion bed is disclosed, the air supply valve has an air supply valve installed between a first tube and a second tube. The air supply valve comprises a round seat, an air valve, a cover plate, a locking plate and a driving ...
12/21/2004
6832620Apparatus for dosing lubricant into an air line
An apparatus for dosing lubricant into a compressed air flow includes a lubricant container, a pneumatically operated lubricant pump, an injection channel, a non-return valve interposed between the outlet of the pump and the injection channel, and an electronic sens...
12/21/2004
6832625Electrically operable valve assembly having an integral pressure regulator
An electrically operable valve assembly having an integral pressure regulator provides ease of installation and compact packaging for a water supply control system. The valve assembly is particularly useful for systems that control household water supplies to preven...
12/21/2004
6832629Rapid inflation and venting air valve of airbed
A rapid inflation and venting air valve of an airbed comprises at least one air inlet, a lower opening, cover openings, and, joint tubes; and a blower having a wind suction opening and a wind transfer tube. When the wind transfer tube is communicated with the air in...
12/21/2004
6830067Manifold valve
A plurality of solenoid valves are mounted onto an upper face of a manifold with solenoid operating portions of the solenoid valves projecting on a side of a first side face of the manifold. Onto the first side face, a board including an electric circuit for feeding...
12/14/2004
6830066Valve with positively driven sensing switch connection
A monitored fluid control valve is provided having a valve body with an elongated bore. A movable valve element is slidably received in the bore. A switch assembly has an aperture aligned with the bore. The switch assembly includes an electrical switch having a swit...
12/14/2004
6820647Valve position monitor
A valve position monitor that provides simultaneous visual and electrical signals of valve position is disclosed. A method of monitoring the position of a valve by utilizing the valve position monitor described herein is also disclosed. ...
11/23/2004
6814100Shock actuated responsive mechanism with means to enable a remote detecting means to determine that the valve assembly has been closed
A vertical shock responsive fluid valve assembly capable of automatically closing a fluid valve in response to earthquake forces or other shock forces of a predetermined magnitude. The vertical shock responsive valve assembly has a flow control mechanism having a cr...
11/09/2004
6810906Flow control device
In a servo controller 3a, it is confirmed whether or not the voltages from amplifiers G1 through G3 are within the range of normal performance in the comparators 32a through 32c after alternating current voltag...
11/02/2004
6807875Self-compensating position sensor
A position sensor and a method for sensing a position of a moveable member includes at least first and second deflectable members arranged so as to allow the moveable member to pass therebetween and cause the at least first and second moveable members to deflect in ...
10/26/2004
6805146Electronic-hydraulic transmission control module and manufacturing method
The electronic-hydraulic transmission control module has a hydraulic plate, an electronic control unit, and a sensor. The sensor is caulked into a wall of an opening in the hydraulic plate forming a plastic deformation. ...
10/19/2004
6789570Hydraulic valve with a position sensor
A hydraulic valve with a position sensor is described. According to various implementations, the valve has a cage with a set of radial holes, a spool assembly slideable within the cage, and a sensor, which may be a Hall effect sensor, that reacts to the movement of ...
09/14/2004
6786237Air servo valve
An exciting coil is wound on a cylindrical yoke provided with a pair of pole teeth, a cylindrical permanent magnet where N pole and S pole are magnetized in a radial direction is disposed so as to be movable in a hollow portion of the yoke and the permanent magnet i...
09/07/2004
6782949Choke valve with pressure transmitters
In a sub-sea wellhead insert-type choke valve having a bonnet, a pair of pressure transmitters are mounted in the bonnet. One transmitter is connected by a passageway with the annular clearance between the cartridge of the insert assembly and the valve body. This tr...
08/31/2004
6763850Throttle control mechanism and sensor mounted on a throttle body
A throttle plate control system mounts a rotational position sensor directly to a throttle body structure to take advantage of vibration isolation provided for the throttle body structure. The configuration is compact and connects the throttle plate of the throttle ...
07/20/2004
6755211Microfluidic systems with inter-channel impedances
Microfluidic systems and devices having integrated fluidic impedances are provided. Such impedances hinder the passage of fluid at low differential pressures, but allow fluid flow at higher differential pressures. Impedances are formed at the overlap of two or more ...
06/29/2004
6752171Control-valve drive with sensor unit for detecting the position of the valve
A drive for a control valve has a drive force unit, a yoke for connecting to a valve in a fixed manner, a drive spindle for transmitting the movement of the drive force unit to the valve and a sensor unit for detecting the position of the valve. The sensor unit incl...
06/22/2004
6742541Linear indicator for a valve
A linear actuator monitors and distinguishes between the open and closed states of a valve. The states of the actuator are monitored electrically by two switches and visually via a mechanical indicator. The electrical switches are initialized by an adjustable system...
06/01/2004
6715731Piezoelectric valve
A directly actuated electric valve is proposed that has a piezoelectric drive unit (3) for direct actuation of a valve member (2). The piezoelectric drive unit (3) contains, extending transverse to the displacement direction of valve member (...
04/06/2004
6681799Exhaust gas regulator including an overmolded housing
A valve including a wall, a closure member, a motive force device, and a coupling member. The wall defines a flow passage that is disposed along a longitudinal axis. The closure member is disposed in the flow passage and is rotatable on a first axis that ...
01/27/2004
6675830Valve unit capable of monitoring output pressure
A pressure control apparatus which controls a pressure of air supplied from a supply hole of a base having a plurality of holes to a supply port of a valve having a plurality of ports is interposed between the base and the valve. This pressure control app...
01/13/2004
6670806Magnetic position sensor for measuring linear displacement
The invention relates to a device with a magnetic position sensor comprising a field sensor (5) and analysis electronics (7) for linear displacements of a rod-shaped component (3), in particular the shaft of an actuator, with an element (M) generating a m...
12/30/2003
6666784Piston rod piston detector, autotensioner and belt tension adjuster
A piston rod position detecting mechanism is proposed which can detect continuously or in a multiple-point manner that the piston rod position has changed due to increase or decrease in the protruding amount of the piston rod due to aging. The protruding ...
12/23/2003
6644347Position detector, particularly for electrical valve actuators
Position detector (1), particularly for electrical valve actuators, comprising a disk (2) fixedly connected to an actuator and provided with a mapping defining a reference for detecting the actuator displacement; and means for detecting the actuator displ...
11/11/2003
6636155Gauge having adjustable activating means
A mechanical gauge having a mechanism for setting multiple alarms within tolerance values. When such tolerance values defined by the mechanism are reached, the same mechanism activates an alarm....
10/21/2003
6633157Displacement detecting device
Displacement of a mechanical element is accurately detected by a simple and inexpensive structure. To provide displacement detecting device including: a mechanical element capable of being displaced; a magnet connected to the mechanical element and magnet...
10/14/2003
6612334Gas shutoff valve having a positive open indicator
An improved manually-operable outlet valve for a tank of pressurized gas, especially a tank in a pressurized breathing oxygen system in an aircraft. The valve has a valve body conventionally attachable to a standard oxygen tank. A rotatable valve stem is ...
09/02/2003
6612333Selector valve with magnetometric sensor
By causing an end portion of a spool to extend outside from a valve hole, mounting a magnet to the extending portion, disposing a detecting block between a casing and an end block to surround the magnet, and mounting a magnetometric sensor to the detectin...
09/02/2003
6612332Solenoid valve having sensor
To provide a solenoid valve having a sensor in which monitor devices for monitoring whether input or output pressure in the solenoid valve is appropriate and a switching state of a valve body are collected to simplify the structure and to facilitate the a...
09/02/2003
6612322Method of detecting valve timing
A method and apparatus for detecting a valve position includes the step of providing a non-actuating alternating current signal (24) to a drive coil signal (22). As a valve plunger (14) moves within the coil, the non-actuating signal changes. By monitorin...
09/02/2003
6598619Exhaust gas regulator including a resilient coupling
A valve that includes a wall, a closure member, a motive force device, a coupling member, and a spacer. The wall defines a flow passage that is disposed along a longitudinal axis. The closure member is disposed in the flow passage and includes a first sha...
07/29/2003
6591865Solenoid valve with magnetometric sensors
To make it easy to mount magnets for monitoring a switched state of a valve element in a solenoid valve and to easily mount magnetometric sensors for sensing an approach of the magnet in a state of excellent water resistance and dustproof property. In a s...
07/15/2003
6588449Diesel fuel shut-off device
Fuel shut-off device for use in a diesel fuel tank to discontinue fuel flow to a fuel pump comprises a valve seat forming a fuel flow opening for fuel to flow from the fuel tank to the fuel pump, a fuel control valve cooperably disposed relative to the va...
07/08/2003
6575149Exhaust gas regulator including a non-contact sensor
A valve that includes a wall, a closure member, a motive force device, a coupling member, and a sensor. The wall defines a flow passage that is disposed along a longitudinal axis. The closure member is disposed in the flow passage and is rotatable on a fi...
06/10/2003
6571823Method and device for estimating the position of an actuator body in an electromagnetic actuator to control a valve of an engine
Method and device for estimating the position of an actuator body in an electromagnetic actuator to control a valve of an engine, according to which the actuator body, which is at least partly made of ferromagnetic material, is displaced towards at least ...
06/03/2003
6563305Actuator of a paper or board machine including hall element position sensor
The invention relates to an actuator comprising a motor (4) by which the shafts (1, 5, 7) of the actuator are driven. At least one magnet (20 is arranged in conjunction with the shaft (1, 5, 7). The actuator further comprises at least one Hall sensor (3),...
05/13/2003
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