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Class 137/85 - With counter-balancing pressure feedback to the modulating device


Subclass of Class 137 - Fluid handling
Definition: Apparatus in which the modulated pressure is utilized in
No. of patents: 187
Last issue date: 08/03/2010


1          
NumberTitleIssue Date
7766030High pressure transducer
A high pressure transducer is disclosed. The transducer includes a supply inlet configured to provide a gas supply to the high pressure transducer at a supply pressure and a pressure divider section coupled to the supply inlet. The pressure divider section is config...
08/03/2010
7337041Feedback control methods and apparatus for electro-pneumatic control systems
Methods and apparatus related to feedback control for electro-pneumatic control systems are disclosed. An example electro-pneumatic control system comprises an electro-pneumatic controller and a secondary pneumatic power stage coupled to the electro-pneumatic contro...
02/26/2008
7325781Automatic bathroom flushers with modular design
A bathroom flusher includes a flusher body, a valve assembly, an electronic control system, and a flusher cover. The flusher body includes an inlet and an outlet, and is designed to accommodate the valve assembly that controls water flow between the inlet and the ou...
02/05/2008
7322246Pressure sensor with pressure translation
A pressure sensor integrated onto an electronic circuit substrate. The pressure sensor measures the effect of the ambient air pressure on a characteristic of the pressure sensor that can be translated into a variable pressure measurement. Another embodiment of the p...
01/29/2008
7302953Built-in ashtray for a motor vehicle and method of making same
In a built-in ashtray, when the cigarette lighter is fitted into a swiveled-up holder, without any special locking mechanism for the holder, an automatic sliding of the ashtray into its closed position is avoided. A spring has a progressive characteristic spring cur...
12/04/2007
7258640Apparatus for compensating viscous characteristics of hydraulic fluid in a hydraulic pressure line
An apparatus for compensating the viscous characteristics of a hydraulic medium in a pressure line (10) in which apparatus a pressure nozzle (12) with constant geometry and constant through-flow cross-section is located in the pressure line (10)...
08/21/2007
7247276Micro-reactor for reactions between gases and liquids
Described herein is a microreactor for carrying out chemical reactions between a reaction partner in liquid form and a reaction partner in gaseous form, if necessary in the presence of a solid catalyst, whereby the chemical process guidance takes place in spaces tha...
07/24/2007
7241423Enhancing fluid flow in a stacked plate microreactor
A stacked plate chemical reactor in which simple plates are stacked together to form the reactor. When openings in adjacent plates are properly aligned, fluid pathways and processing volumes are defined for chemical reactants, heat transfer medium, and a product. In...
07/10/2007
7234482Servovalve 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) on the other side of the arm...
06/26/2007
7234483Electro-pneumatic air pressure regulator
An electro-pneumatic air pressure regulator includes a primary pressure introduction port, a secondary pressure output port, a pilot pressure chamber, a main valve for opening and closing a communicating conduit, a floating piston which actuates the main valve, a no...
06/26/2007
7228730Pressure-measuring glow plug
A pressure-measuring glow plug for a diesel engine with a plug body (3, 4) for insertion into a cylinder of the diesel engine, a heating rod (1) which is arranged in the plug body (3, 4), and a pressure sensor, which is arranged under an initial...
06/12/2007
7210500Methods and apparatus for mechanically adjusting a null offset in a torque motor of a servovalve
A servovalve assembly includes a motor having a flapper shaft. A flapper couples to a first end of the flapper shaft such that the flapper shaft orients the flapper between a first nozzle and a second nozzle of the servovalve assembly. An adjustment assembly adjusts...
05/01/2007
7188822Enclosures for automatic bathroom flushers
A bathroom flusher includes a flusher body, a valve assembly, an electronic control system, and a flusher cover. The flusher body includes an inlet and an outlet, and is designed to accommodate the valve assembly that controls water flow between the inlet and the ou...
03/13/2007
7182102Module for a valve bank
A module for in-line arrangement on at least one further module in a fluid power valve cluster (10) including modules placed in a row adjacent to one another in an in-line direction, comprising communicating means for communication with the at least one furth...
02/27/2007
7156363Bathroom flushers with novel sensors and controllers
A bathroom flusher (10) includes a body having an inlet (12) in communication with a supply line and an outlet (16) in communication with a flush conduit, a valve assembly in the body positioned to close water flow between the inlet and the outl...
01/02/2007
7101515System and method for determining optimal reaction parameters using continuously running process
A reaction system enables a plurality of optimization experiments for a reaction to be performed continuously, to enable optimal reaction parameters to be determined. Dilution pumps are included to automatically vary the solvent mixed with reactants so a concentrati...
09/05/2006
7069941Electronic faucets for long-term operation
An electronic faucet (10) mounted on a countertop (12) includes a housing, at least one fluid inlet line (24a, 24b) extending into the housing, a fluid outlet (46) from the housing, a solenoid (142, 143) for op...
07/04/2006
7066176Reliability-enhanced apparatus operation for re-breathing and methods of effecting same
Methods and apparatus for enhancing reliability of, and monitoring, the operation of airway valves to enhance patient safety. Pneumatic control line pressure (positive or negative) for actuation of the airway valve may be specified at a given magnitude or within a s...
06/27/2006
7032332Method of controlling a backhoe
An electronic control for damping oscillation of a swinging backhoe assembly includes a crossover valve that connects the hydraulic lines that supply hydraulic fluid to the boom swing cylinders to each other whenever an electronic controller senses incipient oscilla...
04/25/2006
6995496Electrical power extraction from mechanical disturbances
A method of extracting power includes coupling a transducer that converts mechanical power to electrical power to a disturbance; coupling an electrical circuit to the transducer such that a peak voltage experienced by the transducer is greater than two times higher ...
02/07/2006
6975061Apparatus for moving a pair of opposing surfaces in response to an electrical activation
An apparatus for moving a pair of opposing surfaces in response to an electrical activation having a support including a rigid non-flexing portion, at least one pivotable arm portion extending from the rigid non-flexing portion, a pair of opposing surfaces with one ...
12/13/2005
6957127Dynamic current-to-pneumatic converter and pneumatic amplifier
A dynamically balanced pneumatic relay amplifier and a current-to-pneumatic converter are disclosed. The relay has a balance plug, a supply plug positioned on top of the balance plug, a bead chain connecting the balance plug and the supply plug, and a vent plug posi...
10/18/2005
6948697Apparatus and method for controlling fluid flow
An actuator base, bobbin, and pole piece form a pocket for an armature that a flexible membrane encloses to form an armature chamber filled with an incompressible fluid. The membrane protects the armature from exposure to corrosive fluids flowing in a conduit. Condu...
09/27/2005
6950000High initial force electromagnetic actuator
An electromagnetic actuator is provided that comprises a housing, a solenoid coil, and an armature. The armature can move between a first position proximate a portion of the housing and a second position distal of the portion of the housing. The armature and the por...
09/27/2005
6925883Non resonating close coupled probe
A probe includes a first tube having a first end positioned at a measurement location, and a second end; a second tube having a first end, and a second end; a connector having a transducer for connecting the second end of the first tube to the second end of the seco...
08/09/2005
6924586Uni-body piezoelectric motor
An apparatus according to the present invention includes a support structure having a primary portion with first and second arm portions formed thereon for movement relative to one another, and a secondary portion with either a clamp portion or valve portion integra...
08/02/2005
6917858Fluid regulation
Fluid regulation may be achieved by a process performed by a controller. The process may include regulating a first fluid with a fluid-driven fluid regulator, receiving a second fluid, receiving electric power generated using the second fluid, and controlling the fl...
07/12/2005
6527862Flow controller
A control system for digitally monitoring and/or controlling pressure to a pneumatic load such as a stop/suckback valve. Pressure is sensed in the pneumatic fluid input lines to the pneumatic load, and a closed loop control is used to maintain the pressur...
03/04/2003
6422532Severe 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 includes a removable service cartridge having a cartridge housin...
07/23/2002
6348098Flow controller
A control system for digitally monitoring and/or controlling pressure to a pneumatic load such as a stop/suckback valve. Pressure is sensed in the pneumatic fluid input lines to the pneumatic load, and a closed loop control is used to maintain the pressur...
02/19/2002
6323494Vertical direction force transducer
A transducer includes a pneumatic actuator in combination with a stepper motor lifter mechanism to which is opposed an attractive E-I core actuator for precise vertical positioning of a load with minimal transmission of vibration. A typical application is...
11/27/2001
6295511Apparatus 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 signal generator that detects an end position of an actuator o...
09/25/2001
6240955Liquid level controller
A liquid level controller is shown having a housing with a rear wall. A shaft has a first end which extends through the rear wall to a liquid displacement member located within a liquid containing vessel. A second end of the shaft joins a pair of opposite...
06/05/2001
6171066Automatic pneumatic pressure control apparatus and method of controlling same
When a steplike reference signal is supplied while a switch is open, an offset signal for compensating for the dead time of a pneumatic device is generated by an offset generator and supplied as a manipulated variable for the pneumatic device. When a feed...
01/09/2001
6112638Electropneumatic positioner having binary input arrangement providing access to electrical output functions thereof
The present invention includes an electropneumatic positioner having an external binary input block which provides access to the electrical output of an integral electronic position controller to control operation of a valve relay. The invention enables m...
09/05/2000
5992448Liquid level controller
A liquid level controller is shown having a housing with a rear wall. A shaft has a first end which extends through the rear wall to a liquid displacement member located within a liquid containing vessel. A second end of the shaft joins a pair of opposite...
11/30/1999
5983926Flow control valve
A first pressure chamber and a second pressure chamber are provided with means for continuously exerting a constant inward pressure on a first diaphragm part and a third diaphragm part respectively. A valve chamber having a flow control portion wherein a ...
11/16/1999
5974945Pneumatic valve positioner with adjustable gain
A feedback control system (i.e., a positioner) for precise positioning of a pneumatic actuator by adjusting the flow of air to the pneumatic actuator comprises an adjustable gain mechanism for adjusting the sensitivity of the positioner. The adjustable ga...
11/02/1999
5931180Electropneumatic positioner
An electropneumatic positioner includes a data processing control section and an electropneumatic converter. The control section includes first and second position determining sections and a signal setting section. The first position determining section o...
08/03/1999
5901034Electronic instrument
The electronic instrument has a two-part housing (26, 27) which surrounds in a dusttight manner a printed board fitted with at least one electronic component. The housing (26, 27) contains a ventilating orifice (50) led through one of its two parts. A ven...
05/04/1999
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