Did You Know...
...that the Band-Aid Bandage was invented by a Johnson & Johnson employee whose wife had cut herself? Earl Dickson's wife was rather accident prone, so he set out to develop a bandage that she could apply without help. He placed a small piece of gauze in the center of a small piece of surgical tape, and what we know today as the Band Aid bandage was born!
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| Number | Title | Issue Date |
| 8132466 | Mechanical properties testing device and method A mechanical property testing device and method for reliably measuring strain and fatigue characteristics of material specimens is described. An input electrical signal is applied to create an electric field around a first piezoelectric member. The resultant deforma... | 03/13/2012 |
| 7319198 | Housingless load cell The invention relates to a housingless load cell whose resistance and measuring accuracy can be improved with respect to environmental influences such that at least the predominant part of the surface (12) and/or the surface (14) has a transversal path... | 01/15/2008 |
| 7318358 | Strain sensor that compensates for thermal strain A strain sensor includes a sensor body extending substantially in a plane. The sensor body is substantially symmetric in the plane about a first axis and a second axis that is perpendicular to the first axis. The sensor body includes a plurality of sensor body porti... | 01/15/2008 |
| 7252009 | System and method for pressure measurement A system and method for pressure measurement may include the ability to readily produce a pressure measurement system. In one general aspect, a process for producing a pressure measurement system includes providing an assembly including a stem, a pressure detector, ... | 08/07/2007 |
| 7240571 | On-board scale sensor with mechanical amplification and improved output signal apparatus and method A system for sensing the load carried in a structural member by attaching a load cell to a neutral axis of bending. Small deflections along an arc of bending create a desirable signal level via mechanical amplification. A load sensor is adapted for mounting on an ax... | 07/10/2007 |
| 7178403 | Transducer responsive to pressure, vibration/acceleration and temperature and methods of fabricating the same A pressure sensing device produces an output proportional to applied pressure irrespective of vibration/acceleration of the device, which device also provides an output proportional only to vibration/acceleration of the device irrespective of the pressure. ... | 02/20/2007 |
| 7096741 | Method and system for reducing operational shock sensitivity of MEMS devices A method and system for reducing operational shock sensitivity of a MEMS device includes a closed-loop control circuit for controlling the MEMS device and a shock detector for detecting a shock experienced by the MEMS device. The closed-loop control circuit includes... | 08/29/2006 |
| 7086293 | Method for monitoring a machine and such a machine, particularly a robot In order to improve the monitoring of a machine with movable parts, such as in particular an industrial robot, and for increasing safety, the invention provides a method for monitoring movable parts of a machine, such as an industrial robot, in which at least two di... | 08/08/2006 |
| 7055365 | Load sensor and seat weight measuring apparatus with a plurality of strain gauges A load sensor hardly causing error in weight measurement even when the environmental temperature of the load sensor varies, and a seat weight measuring apparatus using the load sensor. The sensor includes a plurality of strain gauges form a bridge circuit. The strai... | 06/06/2006 |
| 7000459 | Strain sensor patterned on MEMS flex arms A micromechanical assembly couples to a positioning member and to a body having an aerodynamic surface subject to aerodynamic forces. The micromechanical assembly comprises a substrate including a flexible beam joining a first substrate portion that is attachable to... | 02/21/2006 |
| 6973837 | Temperature compensated strain sensing apparatus A strain sensing apparatus for use in the presence of thermal gradients has a strain gauge and resistance temperature gauge in a planar assembly bonded to, deposited on or diffused or implanted in a substrate surface. The apparatus can sense strain and temperature i... | 12/13/2005 |
| 6957584 | Span and null shift temperature compensated thin film strain gauge bridge by series resistance A temperature compensated strain gauge assembly comprises a strain gauge (10) having two or more resistor or piezoresistors (Rb) in half bridge or full bridge configuration and one or more temperatures compensating resistors or piezoresistors (Rc) connected i... | 10/25/2005 |
| 6910392 | Bending beam load cell with torque sensitivity compensation A bending beam load cell can be compensated for side-to-side off center load sensitivity by simple electrical adjustments if a pair of shear sensing strain gages are bonded to each bending beam midway between axial strain gages used to measure bending strains. The s... | 06/28/2005 |
| 6729187 | Self-compensated ceramic strain gage for use at high temperatures A self-compensated strain gage sensor having a temperature co-efficient of resistance (TCR) of essentially zero comprised of a wide band semiconductor and a compensating metal functioning as serial resistors. Based on the resistivity of the semiconductor and the met... | 05/04/2004 |
| 6715361 | Screwer test bench comprising a thin disk brake A screwer test bench includes a coupling designed for connection with the head of a screwer and connected to a controlled braking unit and a sensor unit for detection of mechanical magnitudes transmitted between the coupling and the braking unit. The braking unit in... | 04/06/2004 |
| 5848383 | System and method for precision compensation for the nonlinear offset and sensitivity variation of a sensor with temperature A method and system for calibrating a sensor is disclosed The method and system include receiving data relating to a plurality of temperature parameters and providing polynomial compensation of a temperature coefficient (TC). When providing polynomial com... | 12/08/1998 |
| 5777234 | Pre-straining apparatus and method for strain sensors A method and apparatus for pre-straining a bolt-on strain sensor. The pre-strain is preferably adjusted by inserting a strain adjusting tool through strain adjusting holes in the sensor and the structural member. The portion of the tool engaging the senso... | 07/07/1998 |
| 5770802 | Sensor with improved capacitive to voltage converter integrated circuit A capacitive transducer (10) which provides an output voltage in response to the application of a mechanical stimulus such as pressure or acceleration includes a signal conditioning integrated circuit (12) to which are connected a variable capacitor (C | 06/23/1998 |
| 5698770 | Method and apparatus for trimming gain of an accelerometer An apparatus for trimming gain of an accelerometer to a desired gain value Gt. The apparatus includes an accelerometer for providing an electric signal indicative of experienced acceleration with an intrinsic gain Gs. An amplifier am... | 12/16/1997 |
| 5532582 | Analog input apparatus An analog input apparatus comprises bridge measuring devices 11 and 31 connected to a bipolar voltage power supply 5, analog multiplexers 18, 19, 38, and 39 responsive to an output level of an oscillator 4B for switching a polarity and outputting two outp... | 07/02/1996 |
| 5521492 | Analog input method An analog input method comprises the steps of correcting a measured value with the digital value output when voltage at either middle point of a bridge circuit is fed into both input terminals of a differential analog amplifier or feeding two middle-point... | 05/28/1996 |
| 5481201 | Circuit for generating a current linearly proportional to displacement of a movable member A circuit for generating a linear current proportional to the displacement of the movable member of a transducer receives an undetermined supply voltage from a monitoring circuit which has a relatively high internal resistance. The circuit is provided wit... | 01/02/1996 |
| 5440935 | Apparatus for combining transducer output signals A sensing apparatus for sensing at least two physical quantities is disclosed. The sensing apparatus includes a first transducer that provides a first output signal proportional to a first measured quantity represented and a second transducer that provide... | 08/15/1995 |
| 5423224 | Strain measuring apparatus A clamp-on structural strain-gage sensor that is mounted to dynamic load-bearing structures, such as sucker-rod type oil well pumps, to produce an electrical output proportional to the deflection of such structures. The apparatus uniquely includes an acti... | 06/13/1995 |
| 5357189 | Analog input apparatus An analog input apparatus comprises bridge measuring devices 11 and 31 connected to a bipolar voltage power supply 5, analog multiplexers 18, 19, 38, and 39 responsive to an output level of an oscillator 4B for switching a polarity and outputting two outp... | 10/18/1994 |
| 5311140 | Circuit for measuring variations in the capacitance of a variable capacitor using a continuously rebalanced detection bridge A circuit for measuring variations in the capacitance of a variable capacr forming part of a sensor includes an oscillator which generates an alternating signal which is supplied to two branches of a detection bridge. The first branch includes the variab... | 05/10/1994 |
| 5269311 | Method for compensating errors in a pressure transducer Disclosed is a method of compensating any of a plurality of different pressure transducers for their characteristic pressure sensitivity, zero pressure offset, and self-heating error. The method comprises selecting a gain resistor that adjusts the gain of... | 12/14/1993 |
| 5224388 | Load measuring device A load measuring device has a plurality of links 2 arranged in a chain to which a load to be measured is applied, respective sensing elements G disposed on two or more links for detecting the strain on the links 2 and giving output signals dependent on th... | 07/06/1993 |
| 5182519 | Heater control device for an air-fuel ratio sensor A heater control device for an air-fuel ratio sensor which comprises: an air-fuel ratio sensor comprising a sensor element which detects an air-fuel ratio state of exhaust gas of an engine, and a heater which heats the sensor elements; a heater current fl... | 01/26/1993 |
| 5166892 | Device for compensating for time-dependent error due to creep and like of measuring apparatus A device used in an apparatus, such as weigher, pressure gauge or the like, for essentially measuring a force, which utilizes a flexural member of elastic material for detecting the force by converting its deflection or strain caused by application of the... | 11/24/1992 |
| 4945762 | Silicon sensor with trimmable wheatstone bridge A device and method for trimming diffused or implanted resistors incorporated within a silicon sensor. Current pulses are applied to cause the migration of aluminum contacts in silicon, resulting in controllable incremental reductions in resistor value. T... | 08/07/1990 |
| 4847794 | Error compensation method for transducers having non-linear characteristics, and an assembly for carrying out said method A method of error compensation for transducers having non-linear characteristics is shown. A computer-supported measuring circuit is used. In a first factory alignment, the output characteristic of the transducer is set so that it can be linearized by the... | 07/11/1989 |
| 4817022 | Method and apparatus for automatic offset compensation in parameter-sensing transducer systems Methods and apparatus by which a transducer is employed to create a digital signal representing numerically the value of a changeable physical parameter. The signal from the transducer is subject to large and unpredictable amounts of offset due to either ... | 03/28/1989 |
| 4800513 | Auto-calibrated sensor system A self-calibrating sensor system is disclosed wherein a processing circuit, normally including an amplifier, receives the output of at least one sensor to develop a processed sensor signal. To compensate for errors (gain error, etc.) in the processing cir... | 01/24/1989 |
| 4787256 | Resistance-gauge force transducer A resistance-gauge force transducer comprises a resilient bar having one end adapted to be fixed to a stationary support and the other end subjected to the force to be measured. The bar carries two pairs of resistance gauges symmetrically disposed on both... | 11/29/1988 |
| 4688434 | Method for adjusting a resistance-gage force transducer and an adjusted force transducer thus obtained A force transducer comprises a resilient bar (1) which carries a measuring bridge formed by resistance gages (R1, . . . R4). One end of the bar is attached to a stationary support (2) and the other end is subjected to a force (P) to ... | 08/25/1987 |
| 4651292 | Temperature compensation of a linear sensor In the case of sensors having a characteristic for which the offset in the quiescent condition has a first temperature coefficient and the slope of the characteristic has a second temperature coefficient, while the quotient of the offset and slope coeffic... | 03/17/1987 |
| 4572001 | Method and apparatus for measuring thermodynamic response A method and apparatus for precisely controlling plastic strain rate during plastic deformation testing of a solid material such as a metal or plastic are described in which the effects of elastic strain rates associated with the specimens and machines us... | 02/25/1986 |
| 4565097 | Method and apparatus for transducer error cancellation A transducer unit comprised of a pair of transducers coupled together in a manner such that the offsets, drifts and the like of the circuit elements of one transducer are opposed by and cancelled out by the circuit elements of the other transducer. The tr... | 01/21/1986 |
| 4522072 | Electromechanical transducer strain sensor arrangement and construction A miniature, solid state, cantilever beam accelerometer is constructed with an arrangement of strain sensing elements which provides for simpler temperature compensation, dual-axis acceleration measurement, and the capability of correcting for nonlinearit... | 06/11/1985 |
