| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 073862581 | By measuring a fluid pressure | 23 |
| 20080196512 | System And Method For Power Pump Performance Monitoring And Analysis - A power pump performance analysis system and methods includes a signal processor connected to certain sensors for sensing pressures and stresses in the cylinder chambers and the inlet and discharge piping of a single or multicylinder pump. Pump speed and pump piston position may be determined by a crankshaft position sensor. Performance analyses for pump work performed, pump cylinder chamber stress, pump fluid end useful cycles to failure, and crosshead loading and shock analysis are provided for estimating pump component life and determining times for component replacement before failure. | 08-21-2008 |
| 20110023629 | WIND TURBINE DRIVE TRAIN TEST ASSEMBLY - One aspect of the invention is a test assembly comprising a prime mover, an actuator assembly and a torque transfer coupling. The actuator assembly has an end configured to be attached to a shaft of a portion of a test specimen such as a wind turbine assembly. The actuator assembly has a shaft supported for rotation by hydraulic bearings. The torque transfer coupling connects the primer mover to the actuator assembly. | 02-03-2011 |
| 20110120234 | METHOD FOR ASSESSING THE SEAL OF A SERVOMOTOR HOUSING - A method for assessing sealing of a housing of a servomotor. The method includes lowering the pressure inside the housing, from an initial pressure to a set pressure, by fluid suction through an opening in the housing, the opening being normally sealed by a plug. When the pressure inside the housing is equal to the set pressure, pressure variation inside the housing, for a predetermined time interval, is determined. The fluid suction prevents any fluid exchange with the housing in a direction opposite a fluid suction direction. The sealing of the housing of the servomotor is assessed based on the pressure variation determined. | 05-26-2011 |
| 20110174084 | METHODS AND SYSTEMS FOR MEASURING STATE OF CHARGE - Charge information associated with an energy storage device may be determined from one or more kinetic responses of the energy storage device. Kinetic responses may include displacements, forces, pressures, or other kinetic properties, and changes in properties thereof. An indication device, such as a sensor, transducer, or other device, may be used to indicate kinetic responses. Charge information, measurements, or both, may be derived from indications of kinetic responses. Charging or discharging of an energy storage device may be controlled based on charge information. | 07-21-2011 |
| 20110232396 | COLLISION DETECTING DEVICE AND COLLISION DETECTING METHOD - A collision detecting device and a collision detecting method are provided that enable accurate detection of a collision based on pressure change in a pressure chamber. A collision body discriminating system ( | 09-29-2011 |
| 20110239789 | COLLISION DETECTION DEVICE - A collision detection device which can determine in a short time a collision to each portion of a chamber member in the longitudinal direction thereof and which is highly reliable. A collision determination system ( | 10-06-2011 |
| 20110303023 | PRESSURE SENSOR WITH SEMICONDUCTOR PRESSURE MEASURING TRANSDUCER - A pressure sensor, comprising: a semiconductor pressure measuring transducer having a measuring membrane and a circuit for transducing a deformation of the measuring membrane into a signal; a pressure transfer structure having a hydraulic path, which extends through a solid body between a first a second opening. The first opening is sealed by an isolating diaphragm, which is contactable with a pressure, in order to introduce the pressure to be measured into the hydraulic path. The hydraulic path opens, at the second opening, into a transducer chamber, in which the pressure measuring transducer is arranged and which is sealed by the measuring membrane of the pressure measuring transducer. The hydraulic path contains a transfer liquid; a filling element, which is arranged in the transducer chamber, in order to fill hollow spaces between metal walls of the transducer chamber and the semiconductor pressure measuring transducer. An insulator plate, which is arranged in the transducer chamber between the measuring membrane and a wall of the transducer chamber lying opposite the measuring membrane; wherein the insulator plate is affixed to the filling element or is embodied as one piece with the filling element. | 12-15-2011 |
| 20120318073 | HVAC AIR FILTER MONITOR WITH SENSOR COMPENSATION - Sensor offsets for an air filter monitor installed in an HVAC system may be determined by measuring a sensor offset differential pressure value across an air filter when substantially no air flow exists through the air filter. The sensor offset differential pressure value obtained at or near zero flow may represent the sensor offset for the air filter monitor. The sensor offset differential pressure value may be used to compensate an un-compensated differential pressure value obtained during flow conditions. | 12-20-2012 |
| 20120325022 | PRESSURE SENSING LIQUID LEVEL SENDER - Measuring container fluid levels and fluid volumes using pressure sensors. An immersion tube is used to detect and convey the pressure at a bottom of a container, and a sender circuit converts the pressure into a liquid level or liquid volume. The sender circuit is isolated from the fluid container for fuel applications using corrosion resistant elastomers. | 12-27-2012 |
| 20130112013 | RING SHEAR APPARATUS CONSIDERING WALL-SLIP EFFECT - A ring shear apparatus for measuring a shear strength of soil samples. The ring shear apparatus considering a wall-slip effect including: an upper ring for forming a first accommodation portion having a ring shape in which soil samples are accommodated; a lower ring for forming a second accommodation portion that corresponds to the first accommodation portion of the upper ring and has a ring shape in which soil samples are accommodated, closely attached to a lower portion of the upper ring and rotatably installed relative to the upper ring; a rotating unit for rotating the lower ring relative to the upper ring; and a shear strength measuring sensor combined with the upper ring and for measuring a shear strength of the soil samples, wherein a plurality of protrusions that protrudes from the lower ring is formed on an inner circumferential surface of the lower ring along a circumferential direction of the lower ring in order to prevent the soil samples from being slid when the lower ring is rotated. | 05-09-2013 |
| 20130263678 | Diaphragm Assembly for a Pressure Sensor, and a Pressure Sensor Provided with Such Assembly - The present disclosure is related to diaphragm assembly for a pressure sensor, including a multi-layered assembly of an outer diaphragm and an inner diaphragm, and an intermediate layer between both diaphragms, the intermediate layer being made of a solid material which is permeable to air. | 10-10-2013 |
| 20140069212 | COMPLIANT TACTILE SENSOR WITH FLUID-FILLED, SPONGE-LIKE MATERIAL - A compliant tactile sensor may include sponge-like material, a flexible skin, and a fluid pressure sensor. The flexible skin may have a shape, absorb fluid, compress in response to force applied to the sponge-like material, and decompress and return to its original shape when the force is removed. The flexible skin may cover an outer surface of the sponge-like material. The fluid pressure sensor may sense changes in pressure in fluid that is within the sponge-like material caused by a force applied to the flexible skin. | 03-13-2014 |
| 20140190276 | TESTING SYSTEM AND METHOD OF METAL SHEET - The present invention provides a testing system of metal sheet, and the system at least comprises a clipping apparatus, a hydraulic press apparatus and a measuring apparatus. The clipping apparatus comprises a first mold, a second mold and a hyperelastic plate. The hydraulic press apparatus connects to the clipping apparatus and transfer a hydraulic pressure via the second mold to the one of the testing sheet set to let it bulge along an orientation toward the first mold. The measuring apparatus connects with the clipping apparatus and the hydraulic press apparatus separately to measure a momentary pressure of the hydraulic pressure and the bulge height of the one of the testing sheet set. A testing method using the abovementioned system is also disclosed in the present invention. | 07-10-2014 |
| 20150128726 | TEST BENCH AND METHOD FOR TESTING THE DRIVE TRAIN OF A WIND TURBINE - The invention relates to a test bench ( | 05-14-2015 |
| 20150292968 | MULTI-AXIS FORCE SENSING SOFT ARTIFICIAL SKIN - A sensor including a layer having viscoelastic properties, the layer comprising a void, the void filled with a fluid; and optionally, a more rigid sensing element embedded within the layer. When a force is applied to a surface of the sensor, the shape of the void changes, causing the electrical resistance of the fluid in the void to change. When included, the more rigid sensing element can bear upon the void to cause the electrical resistance of the fluid in the void to change. A direction and intensity of the force can be determined by measuring the change of the electrical resistance of different voids positioned about the sensing element. The layer can be an elastomer, preferably silicone rubber. The fluid can be a conductive liquid, preferably Eutectic Gallium Indium. The sensing element can be plastic and can have a “Joystick” shape. The voids can take the form of channels or microchannels having a predefined pattern and/or shape. | 10-15-2015 |
| 20150308885 | DIFFERENTIAL PRESSURE OCCUPANT DETECTION - An occupant detection system is configured to classify an object that resides on a seat of a vehicle. The system includes a first bladder, a second bladder, and a differential pressure sensor. The first bladder is configured to be disposed in a central area of a seat. The second bladder is configured to be disposed in a peripheral area of the seat. The differential pressure sensor is fluidicly coupled to the first bladder and the second bladder in a manner effective to determine a pressure difference between a first pressure of the first bladder and a second pressure of the second bladder. In one configuration, the first bladder and the second bladder are configured so the pressure difference when a person sits on the seat is greater than the pressure difference when a child-seat occupies the seat. | 10-29-2015 |
| 20160202130 | REVERSIBLE FORCE MEASURING DEVICE | 07-14-2016 |
| 073862582 | Using a load responsive valve or restrictor | 4 |
| 20120024082 | PROCESS VALVE INCLUDING A FORCE MEASURING DEVICE - The invention relates to a process valve ( | 02-02-2012 |
| 073862583 | Pneumatic | 3 |
| 20100037710 | Safety System - A safety system for testing high-pressure devices comprising an explosion-proof safety housing; a high-pressure pneumatics testing equipment located within the housing; a closeable access opening in the housing for inserting a high-pressure device for testing within the housing; means within said housing for coupling the high-pressure pneumatics testing equipment to the high-pressure device for testing; a control panel located outside the housing; and means linking said high-pressure pneumatics testing equipment to the control panel for operating the high-pressure pneumatics testing equipment within the safety housing from the control panel. | 02-18-2010 |
| 20100050786 | METHOD AND DEVICE FOR TESTING THE FUNCTIONALITY OF AN ACTUATOR HAVING A PNEUMATIC DRIVE - The invention relates to a method for monitoring the functionality of an actuator ( | 03-04-2010 |
| 20110252895 | METHOD FOR DETERMINING AN OPERATING POSITION OF AN OPEN/CLOSED-VALVE AND FIELD DEVICE - In a method or field device for determining a position of an open/closed-valve positioned by a pneumatic actuating drive and movable to a completely opened open position and a closed position depending on operating requirements, during normal operation a pneumatic working chamber of the actuating drive is pneumatically influenced with an i/p converter such that the open/closed-valve moves to one of the open/closed positions and, in case of a predetermined operating condition, the i/p converter allows the working chamber to vent so that the open/closed valve automatically moves to the other one of the open/closed positions. At least one of pressure prevailing in the working chamber and pneumatic control pressure output at the i/p converter is captured continuously over time, thus obtaining a pressure change over time on the basis of which a physical operational variable of the open/closed-valve is determined. | 10-20-2011 |
| 073862584 | Using a piston | 2 |
| 20110146417 | Portable, hydraulic, direct force, readout apparatus - A hydraulic load cell configured to allow direct readout of an applied force in pounds by a standard hydraulic gauge, which is normally calibrated in pounds per square inch. A load is applied generally to the end of the load cell's piston. The piston is fitted with an o'ring in its machined groove and inserted into a fluid filled cylinder; the cylinder having been machined to a tightly controlled diameter of nominally 1.12838 inches. The fluid cavity is joined by a small bore tube to the hydraulic gauge. The three piece device and adjoined gauge is extremely rugged. Pascal's Law of incompressibility of a liquid and the equation of Force=Pressure×Area are utilized to realize the invention's unique simplicity and usefulness. Applications to single and multiple point loading are shown. | 06-23-2011 |
| 20130333487 | METHOD AND APPARATUS FOR INTERNALLY DETERMINING A LOAD APPLIED BY A JACK - An embodiment of the subject invention is directed to a jack incorporating one or more strain gauges. The one or more strain gauges can be positioned on, within, or integral to the jack. When a load or force is applied by the jack, one or more materials within the jack are deformed or displaced as a result of the applied load. The one or more strain gauges are used to measure the deformation or displacement and thus measure the strain. The measured strain can be used to determine the magnitude of the load applied by the jack. In an embodiment, a plurality of strain gauges are used and the resulting strain measurements can be combined to determine the applied load. | 12-19-2013 |
