Class 73/782 - Strain multiplier

Subclass of Class 73 - Measuring and testing
Definition: Subject matter wherein the coupling means imparts a strain
No. of patents: 29
Last issue date: 04/15/2008

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Number	Title	Issue Date
7357036	Force measuring apparatus and strain measuring element A force measuring apparatus comprises has a force-transmitting component, that holds a strain measuring element with a carrier element and a displacement transducer. The carrier element has two fixing sections at a predefined distance from each other in a direction ...	04/15/2008
7328627	Seat load detecting device and mounting structure thereof In a seat load detecting device, sensor bodies are interposed between an upper rail and respective lower brackets. Each sensor body includes an annular strain portion which axial line extends vertically, an outer peripheral holder which is mounted to the upper rail ...	02/12/2008
7240434	Stage apparatus A stage apparatus may include a first stage, a second stage movable with respect to the first stage, at least one flexure hinge to connect the first stage with the second stage, a plurality of actuators provided between the first stage and the second stage to push t...	07/10/2007
7239107	Flexure stage In one embodiment, a flexure stage comprises a base, a stage, a positioning mechanism, and a control device. The base and stage have first and second portions that are spaced apart from each other. The positioning mechanism is coupled between the base and the stage....	07/03/2007
7210358	Force sensor assembly A force sensor assembly includes a force sensor, a first support member, a threaded portion, an opening made in the first support member, a nut, a restricting member and a spacer. The nut is screwed onto the threaded portion which is inserted through the opening. Th...	05/01/2007
7107693	Apparatus and method for precise angular positioning An apparatus and method for precise angular positioning of an object. A first pivot arm and a second pivot arm each is pivotally mounted with respect to a base. A pivot base flex member is operatively connected to the first pivot arm and allows the first pivot arm t...	09/19/2006
7066026	Underwater acoustic vector sensor using transverse-response free, shear mode, PMN-PT crystal The present invention is directed to an acoustic vector sensor, also called particle velocity sensor. direction poled, shear mode, relaxor single crystals are used as the sensing elements. In addition, these crystal plates are cut at a special orientation such...	06/27/2006
6979629	Method and apparatus for processing composite member A detection apparatus for detecting a feature portion of a composite member having a structure in which a first member having a separation layer inside is brought into tight contact with a second member. The composite member has, as the feature portion, a portion at...	12/27/2005
6931947	Measurement device and seating arrangement A measurement device (10; 110; 210) and associated seating arrangement, in particular for measuring a weight acting on a vehicle seat, that includes: a force transmission element (12; 112; 212), which is connectable to a first unit, preferably a vehicl...	08/23/2005
6907677	Stable LVDT extensometer A new extensometer is disclosed that avoids prior art problems of drift and other problems from variations in temperature, humidity and other environmental factors. Two primary extensometer body parts each hold at one end specimen contact rods and at their other end...	06/21/2005
6898983	Mechanical multiplier for a strain gage on a derrick A strain gage apparatus for measuring the load applied to a derrick leg mechanically multiplies the deflection or distortion of a strain gage. The apparatus attaches to the derrick leg at two points that are spaced about five feet apart. Accumulated strain along the...	05/31/2005
6880408	Mechanical amplifier systems and methods A mechanical amplifier includes first and second amplifier mounting pads (110, 120) and first and second sensor mounting pads (130, 140). At least one of the first and second amplifier mounting pads (110, 120) receives a load or displacement. Th...	04/19/2005
6820495	Strain/electrical potential transducer A strain/electrical potential transducer (10) includes a rigid base (12), a rigid beam (18) hinged to the base (12) at (20), an elongate stack (14) of dielectric substance, e.g. piezoelectric material, generally parallel wit...	11/23/2004
6739199	Substrate and method of forming substrate for MEMS device with strain gage A substrate for a MEMS device includes a base material having a first side, a poly silicon strain gage formed on the first side of the base material, a dielectric material disposed over the strain gage, and a conductive material in communication with the strain gage...	05/25/2004
6715363	Method and apparatus for strain amplification for piezoelectric transducers A method and apparatus for mechanical strain amplification for enhanced piezoelectric transduction. The device consists of a piezoelectric element elevated above the neutral axis of a supporting, micromachined, photoetched substrate by use of castellations on the su...	04/06/2004
6688183	Apparatus having motion with pre-determined degrees of freedom A motion apparatus having two or five degrees of freedom includes a plurality of arm flexures, a plurality of parallelogram flexures or a plurality of compound parallelogram flexures. The motion apparatus minimizes direct, parasitic, and coupled error mot...	02/10/2004
6349602	Seat occupant detection apparatus A beam is mounted to a mounting flange. A seat pan is mounted to opposite end portions of the beam. Provided near a middle portion of the beam is a sensor unit for detecting flexure of the middle portion of the beam. The sensor unit has a sensor beam whos...	02/26/2002
6021676	Instrument for measurement of basementrock's deformation A devised strain meter detects displacement on the lateral side of the receptacle after magnification of the displacement by a lever in the receptacle. A cavity exists near the middle of the receptacle with a lever and a detector along the lateral side of...	02/08/2000
5585572	Deformation measuring device for measuring the torque of a cylindrical shaft The invention relates to a deformation measuring device (11) for measuring the torque of a cylindrical shaft (10), which device consists of a sensor (12) which rotates together with the shaft (10) and at least one transducer (16) for converting a torque-d...	12/17/1996
5230392	Load weighing apparatus A weighing apparatus is put forward for weighing a load carried by a load support provided with front and rear wheel assemblies each having at least one member which deforms as a result of the load. The apparatus comprises a plurality of strain transducer...	07/27/1993
5115680	Displacement sensor with mechanical preamplification means A device for measuring physical variables comprises a pair of thin planar members disposed symmetrically in a face-to-face arrangement about a plane including a reference axis defining the direction of displacement of a target object mechanically coupled ...	05/26/1992
5109701	Field-based movement sensor A field-based movement sensor adapted for measuring strain along a certain axis in an object on which the sensor is attached. The sensor includes a substrate having a working surface and formed with a pair of fingers projecting from a first direction, and...	05/05/1992
4825701	Strain measurement device A strain measurement device to determine the amount of clamping force or pressure developed in a machine from the small amount of linear movement which results from strain on a predetermined part of the machine, such as a tie bar. The strain measurement d...	05/02/1989
4685338	Device for mounting a relative displacement sensor on a beam having radial lugs The device comprises at least three non-colinear studs (A,B,C) interposed between each lug face (5) against which a sensor or sensor mounting part is pressed. Stud (A) may be closer to a beam (1) than the other studs (b) and (C), thereby maximizing the re...	08/11/1987
4649758	Torque sensing apparatus A rotary shaft (13) is fitted with strain gauges (17) in a bridge formation arranged to give a response to torque. Windings (18a, 19a) surround the shaft at axially spaced zones and rotate with it, co-operating with fixed windings (18b, 19b) providing tra...	03/17/1987
4367656	Single axis force transducer A transducer for sensing forces in a single axis. A beam (14) which may be the draft link of a tractor is provided with an intermediate central beam (32) defined by two relatively narrow parallel slots (30) disposed closely adjacent to the neutral plane (...	01/11/1983
4197479	Intrusion detecting sensor assembly using a piezoelectric bender An intrusion detecting sensor assembly comprising a bracket having one leg to be clamped to the surface of a structural member, for instance of a building, and having a second leg spaced from the first leg and also abutting said surface, the second leg be...	04/08/1980
4152748	Multiple transducer A transducer system comprising, a multiple capacitive transducer having a flexible dielectric sheet of elastic nonconductive material, a first plate of flexible conductive material defining a region located adjacent a first surface of the sheet, and a plu...	05/01/1979
4004510	Equipment for introduction of a strip of paper, cardboard or similar material into a printing machine In a printing machine, a device for introducing a continuous web of paper to the printing station, the device having apparatus to continually measure the coefficient of elasticity of the web and apparatus for developing a tension on the web as a function ...	01/25/1977

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Class 73/782 - Strain multiplier