Class 73/1.09 - Torque

Subclass of Class 73 - Measuring and testing
Definition: Subject matter wherein either (a) the apparatus for proving
No. of patents: 24
Last issue date: 09/09/2008

Number	Title	Issue Date
7421880	Switch feel measurement system calibration A method may be employed to assure that a switch measurement system accurately measures a torque/angular displacement profile for a rotary switch. A procedure may be employed that aligns the rotational axis of the switch with the rotational axis of the measurement u...	09/09/2008
7100419	Method for simulating a dynamic force response and method of calibration A method of simulating a dynamic force event comprises rotating a cam about an axis according to a rotational speed profile and biasing a follower against a surface of the cam as the cam rotates so that the follower moves on the surface and imparts a braking force a...	09/05/2006
6782594	Method and apparatus for auditing a tension load in the threaded fastener The present invention is directed towards a method and an apparatus for accurately estimating the tension or clamp force in a bolted joint. An installed fastener is rotated and the torque necessary to rotate the fastener and the angle through which the fastener is r...	08/31/2004
6718831	Screwer test bench comprising a resisting torque simulation unit A screwer test bench includes a coupling designed for coupling with the head of a screwer. The coupling is connected to a braking unit through a sensor unit for detection of mechanical magnitudes transmitted between the coupling and the braking unit. The braking uni...	04/13/2004
6715362	Screwer test bench comprising a braking device for resisting torque simulation A screwer test bench including a coupling designed for coupling with the head of a screwer and a controlled braking unit. A sensor unit detects mechanical magnitudes transmitted between the coupling and the braking unit. The braking unit includes a brake with carbon...	04/06/2004
6704665	Torque sensor abnormality detecting device In an abnormality detecting device of a torque sensor including a pair of coils in which inductance is changed in opposite directions corresponding to torque and a torque detecting means for outputting a torque detection voltage from both voltages based o...	03/09/2004
6609407	Test apparatus for a wrench used to test previously tightened fasteners A test apparatus includes a torque sensor that outputs an indication of torque when rotated by a tool to be tested, and an angle potentiometer that outputs an indication of the rotation angle. A rotatable arm is connected to the torque sensor. A stop prev...	08/26/2003
6588106	Method and apparatus for installing roller bearings The invention concerns a method for the installation of pretensioned roller bearings (2), in particular angular ball bearings, for example, in wheel carriers of automobiles, airplanes, and the like. The invention is characterized in that the installation appar...	07/08/2003
6386052	Torque sensor A torque sensor which does not require complicated neutral adjustment using a position adjustment mechanism or the like, which is capable of reducing cost and heat generation, improving reliability and realizing a one-system detection circuit. A torque se...	05/14/2002
6112837	Manually operated, motor assisted wheelchair A wheelchair having an electric motor power assist controlled by a sensor that senses the manual force applied by a rider to the hand rim. An arrangement is provided for facilitating adjustment of the sensor so as to permit accurate adjustment without req...	09/05/2000
5918201	System and method for monitoring tool cycles A method for processing torque transducer data is provided. The method includes sampling a signal received from a torque transducer (14). The cycle count stored on a data memory device (112) at the torque transducer (14) is then incremented if the sampled...	06/29/1999
5886246	Test method and device for screwers A test method for a screwer performs the steps of connecting the screwer to a rotatable attachment element, screwing down the screwer, measuring the attachment element speed, power-supplying an electric motor to bring it to a speed close to the measured s...	03/23/1999
5703277	Torque tool tester machine A torque tool tester machine that includes a reaction means to hold a torque tool to be tested, an electronic torque transducer in rotary driving engagement with a torque transmitting part of the torque tool and a reduction gear train including a manually...	12/30/1997
5693871	Low differential pressure generator A method and apparatus for evaluating low differential pressure transducers includes a pressure generator in the form of a piston-cylinder assembly having a piston that may be manually positioned precisely within the cylinder to change the volume and thus...	12/02/1997
5592396	Monitoring and control of fluid driven tools A system for monitoring and/or controlling the torque applied by a fluid driven tool for driving threaded fasteners, such as tools driven by either air or oil. The system includes a fluid flow meter to measure a parameter which is a function of the rate o...	01/07/1997
5509315	Absorption dynamometer torque measuring device and calibration method The invention is an in-line torque meter for use with an absorption dynamometer in which the twist of a rotating shaft that transmits torque from an engine to an air dynamometer is measured by a single sensor on the adjacent stationary structure. The torq...	04/23/1996
5483820	Method for zero correction in torque sensor A method for zero correction in torque sensors, such as magnetostrictive torque sensor and strain gauge type torque sensor. Torque measurement is initiated when absolute values of torque signals are greater than a first set value, sampling measurement is ...	01/16/1996
5456123	Static torque measurement for rotatable shaft Apparatus for determining static torque on a rotatable shaft includes at least two elements that when coupled to the shaft have a torque dependent relationship to each other; a sensor for detecting the torque dependent relationship when the shaft is under...	10/10/1995
4852386	Disposable torque screwdriver tester A manually engagable, portable and disposable tester for torque limiting and torque indicating screwdrivers comprising a horizontal hand-held plate with top and bottom surfaces, front and rear ends, and opposite sides, an elongate deflection beam with fro...	08/01/1989
4577412	Rheometer rotor height gauge A rheometer rotor height gauge (54) with an indicator (56) on a sleeve (58) slidably mounted on a pedestal (62) of a base (60). A shaft (70) operatively connected to the indicator (56) projects downward to a rheometer rotor contacting member (68). The ped...	03/25/1986
4498336	Torque measuring device A torque measuring device is provided for use in conjunction with a valve actuator of the type having a housing and an actuator member movable within the housing in unison with the opening and closure of a valve. The device comprises a mounting plate whic...	02/12/1985
4220038	Apparatus for monitoring instrument readings of transient force of a moving fluid column A device for verifying instrument readings of transient force of a moving fluid column including a paddle depending from a taut wire torsion bar. The unit is adaptable to instruments utilizing fluid pulses in testing objects for resistance or vulnerabilit...	09/02/1980
4150559	Variable rate test joint A device for simulating the tightening rate of a threaded fastener and for varying the joint rate. The torque applied to the joint is determined. The device is suitable for determining the torque scatter of the torque applied to the simulated joint by mea...	04/24/1979
3999426	Torque analyzing apparatus Described herein is an improved torque analyzing apparatus for indicating the torque transmitted by power tools. In addition to the housing, bearing supports and torque indicator or pointer, the apparatus includes a torque input shaft that is frictionally...	12/28/1976

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Class 73/1.09 - Torque