Abstract: The present invention relates to a burglarproof lock, comprising a cylinder case, a cylinder lock-core and a key, wherein said cylinder case is a hollow cylinder with cylinder cavity, said cylinder cavity having one end being formed to tightly wrap the periphery of cylinder lock-core, and the opposite distal end being closed plane as top cover, a keyhole is formed at the off-center position on the top cover, and a shift slot is formed in connection with said keyhole in manner of extending towards center of said top cover, and the position of said key-socket and that of keyhole on said top cover of said cylinder case is arranged out of alignment. As put said blade-plug of said key into said keyhole, said thin-shank should be guided into said shift slot and moved transversely along it towards said key-socket until said blade-plug being in alignment with said key-socket on the cylinder lock-core. Then, said blade-plug can be inserted into said key-socket in order to attain the goal of opening the lock.

Abstract: Improvements in Patent of Invention No. P-200102469 for an engaging mechanism for locks, characterized in that said spindle (6b) of the radial actuator (6) has an articulated connection to the tip of a first elastic arm (13), which is radially fixed at its other end in an axis (14) that is mounted with freedom to turn, and that one end of a second elastic arm (15) is radially fixed in this axis (14) with a 90° difference in rotation, having its other end meshing with the spiral thread of an endless screw (16), which forms the output axis of an electric motor (17) that turns in both directions of rotation and is oriented transversely to said freely rotating axis (14).

Abstract: In a pin tumbler-type cylinder lock having an auxiliary tumbler stack, the bottom pin of the auxiliary tumbler stack has a recessed underside for receiving a projection on the key to form a detent. The invention provides an additional functionality that has not previously been associated with the auxiliary tumbler stack. When the projection on the key as seated, it prevents the key from being withdrawn from the keyway while the plug is in any rotational position in which the drive and bottom pins are not substantially aligned. Thus, the key is retained whenever the plug has been rotated.

Abstract: A key-operated lock that can be programmed for use with one of a plurality of user keys without disassembling the lock or replacing the tumblers. The lock operates with a user key so that the lock plug turns only in one direction to unlatch or unbolt, and can not operate or rotate in the opposite direction. The lock also cannot be programmed or reconfigured with an operable user key. The lock is typically manually latched or bolted into a locked configuration. The lock is configured to permit rotation in the opposite direction only when using a programming key, which can reconfigure or program the lock for use with another user key.

Abstract: A process and a device for treating and upgrading raw manure. The method and the device comprise steps which consist in promoting agglomeration of solid constituents of the manure and precipitating the agglomerated particles by using a sedimentation agent. More particularly, the sedimentation agent used is based on natural stone and/or industrial derivative dusts. Sedimentation of the agglomerated particles enables the solid phase and the liquid phase to be separately treated, leading eventually to the production of a solid fertilizer, a liquid fertilizer and water corresponding to environmental standards and capable of being released into the environment or simply recycled.

Abstract: A cleaning apparatus for removing metallic buildup from forming surfaces of metal forming dies while the dies are in a press and operating at elevated temperatures. The cleaning apparatus includes a programmable positioner having a robotic arm with an end effector carrying a brush assembly. The brush assembly includes a rotary drive motor rotatably carrying a metallic wire brush. The brush has a plurality of radially extending plain carbon steel bristles having tips adapted for removing metallic buildup from the forming surfaces of dies. The positioner operates to move the rotatable wire brush in a predetermined path that engages the brush with the forming surfaces of the dies for sweeping and cleaning metallic buildup from the forming surfaces.

Abstract: A bend bar is available for use in a quality control test for testing for a consistency of residual stress effects in a particular material using a given a laser peening process. The bar is composed of the particular material to be tested and has a bar length and a bar thickness. The particular material has a characteristic maximum stress penetration depth for compressive residual stresses that can be formed in using the given laser peening process. The bar thickness is chosen so as to be at least twice the characteristic maximum stress penetration depth. The bar has a test surface that extends parallel to the bar length and perpendicular to the bar thickness. After forming a spot pattern on the test surface using the given laser peening process, the deflection generated in the bar due to the compressive residual stresses induced by laser peening can then be measured and used as a quality control measurement.

Abstract: Shot for use in a peening installation, the shot having: hardness greater than or equal to 800 HV; density greater than or equal to 8 g/cm3; and pieces having a maximum dimension less than or equal to 1.5 mm.

Abstract: A billet is initially rolled into a process section having at least first and second segments joined by an intermediate web, with the cross-sectional area of the second segment being larger than that of the first segment. The intermediate web is slit to separate the first and second segments, and the thus separated segments are simultaneously rolled into finished products having different cross-sectional areas.

Abstract: Disclosed is a device for bending the rolls in a roll stand comprising several rolls. Said device is provided with bending blocks which are fastened between the built-in roll parts and the stand windows at the delivery end and the discharge end, the top and bottom bending blocks being connected by means of piston cylinders and/or a vertical positioning mechanism, preferably a spindle-type lifting gear unit. A bending force can be introduced into the bending blocks (5, 5a) which are connected on the same side via a piston cylinder (7) while the opposite bending blocks (5?, 5a?) can be positioned and locked via the spindle-type lifting gear unit (10).

Abstract: A sheet of material (111) having a plurality of bend-inducing structures (113) configured and positioned to produce bending along a bend line (115). The bend-inducing structures (113) have arcuate return portions (122) extending from opposite ends (121) back along the bend-inducing structures (113) toward the other return portion (122) and each return portion (122) has a length dimension and a radius of curvature reducing stress concentrations. Preferably, the length dimension of the arcuate return portion (122) is in excess of twice the thickness. The lateral distance, LD, to which the bend-inducing structures (113) is formed in the sheet away from the bend line (115) is preferably minimized by small radius arcs (125) which connect the return portions (122) to the remainder of the bend-inducing structures (113).

Abstract: A progressive stamping die system and method of operation providing dimensionally accurate flat stamped parts. A biasing mechanism is provided in actual alignment with a coin punch member in order to accurately control the configuration and planar accuracy of the stamped parts being formed.

Abstract: An aerosol can fabrication process comprises the following steps: formation of slugs from an aluminium-based alloy having the following composition, in weight percentage: Si 0.35-0.45 Mg 0.25-0.40 Mn 0.05-0.15 Fe 0.12-0.20 Total of minor elements ?0.15% Al Balance. thermal treatment of the slugs, forced cooling of the slugs, cold impact extrusion of a slug so as to form a can, applying a lacquer inside the can.

Abstract: A jaw arm for a compression tool has a jaw recess at one end and a jaw insert is supported in the recess for pivotal displacement relative thereto about an insert axis. A compression tool comprises a pair of parallel spaced apart side plates, and a pair of the jaw arms pivotally mounted between the plates. The pivotal inserts are self-aligning with respect to a pipe and coupling to be crimped together and provide for use of the compression tool in areas with limited accessibility.

Abstract: Narrow aerial and die-mount cams, each having a cam adapter, a driver and a slide sandwiched between the cam adapter and driver. The narrow aerial cam slide has an elongate primary portion that has a T-shaped cross-section and has a primary bearing surface, and the cam adapter has a rectangular recess. An elongate keeper plate having a longitudinal slot is secured to each side of the cam adapter adjacent the rectangular recess to slidably retain the primary portion of the slide within the longitudinal slots and the rectangular recess. The primary bearing surface and a pair of intermediate bearing surfaces formed in the slide below the primary portion slidably support the keeper plates and thus the cam adapter. The driver slidably supports the slide. The narrow die-mount cam is basically an inverted version of the aerial cam.

Abstract: A system and method for equilibrating and calibrating a pressure or force sensor is provided. The system includes a flexible bag arranged to receive the sensor, and a vacuum source, connectable with the flexible bag, adapted to reduce the pressure within the flexible bag. By reducing the pressure within the flexible bag, such that the pressure inside of the bag is less than the pressure outside of the bag, the resultant uniform pressure acting on the sensor is used to calibrate and equilibrate the sensor. The system may include a porous material in the flexible bag to facilitate the evacuation of air from within the flexible bag as the pressure is reduced. The system may also include an opening, such that when the sensor is placed in the bag, a portion of the sensor extends outside of the bag to communicate with a controller. The opening may be provided either on the flexible bag, or on a clamp attached to the flexible bag.

Abstract: An air or gas bubble detection system detects the presence of liquid in intravenous (IV) tubing. By detecting the presence of liquid rather than gas, false alarms due to micro bubbles or small air gaps between the sensor and the tubing are avoided.

Abstract: A sensor element can comprise a co-fired heater section, a sensing section, and a third insulating layer disposed between the electrode portion and the temperature sensor. The heater section can comprise a heater, a shield, and a temperature sensor, with a first insulating layer disposed between the heater and the shield, and a second insulating layer disposed between the shield and the temperature sensor. The sensing section can comprise an electrode portion and a sensing portion, wherein the sensing portion is disposed on a side of the electrode portion opposite the heater section.

Abstract: The concentration of xenon, in a medical gas mixture of xenon as an active component with a known composition of oxygen and, optionally, nitrogen and/or helium recirculating through a medical device (103) in which carbon dioxide is introduced into the mixture, is monitored by removal (135, 133) of carbon dioxide downstream of the medical device (103) and subsequently passing the carbon dioxide-free gas through an ultrasonic gas analyser (143) upstream of the medical device. The gas analyzer determines the xenon concentration by measuring the time delay between transmission of an ultrahigh frequency ultrasonic pulse of at least 100 kHz axially through the sample chamber from a location at one end thereof and reflection of said pulse axially from the other end of the sample chamber back to said location. An analyser of novel construction is disclosed.

Abstract: A knocking determining apparatus of an internal combustion engine that includes an in-cylinder injector and an intake port injector and that determines knocking based on an output signal of a knock sensor. The knocking determining apparatus includes a knocking determination prohibition unit prohibiting, when a ratio of fuel injection from the in-cylinder injector and the intake port injector is changed, knocking determination for a prescribed period after that change, or a knocking determination level change unit changing a knocking determination level for a prescribed period after that change.

Abstract: A tank container with electronic monitoring device includes a tank barrel and a container frame supporting the same. The tank barrel includes a valve assembly and a valve assembly protection box. The electronic monitoring device is installed inside the valve assembly protection box, or on a sealing surface of the tank barrel, or in a range of the container frame outside the tank barrel. The electronic monitoring device includes a sensor for detecting a leakage condition of the cargoes contained in the tank container and transmitting an information data related to the leakage condition, and a data processing module connected with the sensor for processing the data. The invention can be used for detecting a sealing condition of a sealing surface and an illegal open of a lid of the valve assembly protection box as well as for realizing a global tracking, whereby ensuring a safe transport for containers.

Abstract: An automotive air-conditioner includes a heating heat exchanger, a bypass passage, a hot air passage, an air mixing door, an air mixing chamber, a front outlet passage diverging from the air mixing chamber toward a front side of a passenger compartment, a rear outlet passage diverging from downstream of the heating heat exchanger in the hot air passage toward a rear side of the passenger compartment, a door configured to open and close the rear outlet passages and an inlet of the rear outlet passage configured to avoid overlap with an inlet of the hot air passage in an airflow direction perpendicular to a face of the heating heat exchanger, the inlet of the rear outlet passage is provided across the inlet of the hot air passage from the air mixing chamber in the airflow direction.

Abstract: A non-attached monitoring device includes monitoring assembly and an antenna configured to radiate signals from the monitoring assembly. The antenna is configured to radiate through the oriented attenuating body of the tire sidewall regardless of the position of the monitoring device with respect to the tire sidewall. In one embodiment, the antenna has a body that is looped back on itself. The body may be parallel to or perpendicular to the antenna ground plane. In another embodiment, a radiating slot antenna is configured to provide transmissions through the tire sidewall regardless of the position of the monitoring device.

Abstract: The invention relates to a pressure measuring module for a tyre (10) comprising an air pressure sensor (50) with an air inlet (51), an intermediate base (40) and a valve (30). It is characterised by the fact that the pressure sensor is mounted laterally with respect to the axis of the valve. In particular, the air inlet of the sensor is turned radially towards the outside of the rim and the pressure sensor is exposed to the flow of air (81) passing through the valve (30) causing negative pressure at the air inlet (51). The invention makes it possible to avoid dirt from being deposited in the air inlet of the sensor.

Abstract: Apparatus and methods for airflow testing, especially for air testing of gas turbine components on an airflow test bench. Various embodiments of the present invention include the use of a flow-stabilizing member downstream of the component being tested. Since the flow through or over the component is subsonic, a flow-stabilizing member placed down stream of the component can have an effect on the flow conditions in or around the component being tested. In one embodiment, the flow-stabilizing member provides more consistent results during the testing of the component.

Abstract: A reduced drag cable for use in vertical wind tunnels and other applications with a change in the spacing and/or size of the strands of a standard twisted wire cable is disclosed. The perimeter strands of one embodiment all have a standard diameter, with the exception of one or more wires with different diameter from the other perimeter strands. The different sized strand forms a helical feature around the cable, creating a non-circular profile to reduce drag in air.

Abstract: Devices are previously known for determining at least one parameter of a medium flowing in a conduit, in particular for determining the air mass flow in the intake section of an internal combustion engine, having a conduit part and a sensor device that has a bypass part. In order to avoid a flow detachment at the side walls of the bypass part, it is provided that a flow vane, running at least approximately parallel to a side wall, provided with a separation opening, of the bypass part, be provided in a conduit part behind a separation opening, seen in the main flow direction, and that the conduit part be provided, in the area of the bypass part, with at least one projection that protrudes from an inner wall of the conduit part towards the bypass part.

Abstract: The invention relates to a level meter with two oscillating bodies (2, 3) positioned one inside the other. An equalizing body (5) is positioned in the interior (32) of the inside oscillating body (2). The equalizing body (5) exhibits a section (52) that is at least in part elastic, such that the outer diameter (ds*) of the elastic section in relaxed condition is greater than the inner diameter (dgi) of the interior (32). This provides a good coupling and, at the same time, protection against displacement for the equalizing body (5) relative to the inside oscillating body (3). For supplemental adjustment of the equalizing body (5), the latter is provided with an outside thread (51), which engages with an inside thread (33) belonging to the interior (32). A slot (52) for adjusting the equalizing body (5) is accessible via an access opening (6); the access hole (6) runs in the rearward direction, through the individual components of the level meter (1), including the drive and/or receiving device (7).

Abstract: The present invention provides a probe having a resistance that varies with temperature and is operable to determine the quantity of a fluid, such as hydrogen, in a storage tank, such as a cryogenic storage tank. The probe relies upon differing heat transfer rates for the gaseous and liquid phases of the fluid and a change in resistance due to a change in temperature of the probe to ascertain the quantity of fluid within the storage tank. The probe can be configured to account for the geometry of the storage tank thereby providing a linearized signal indicative of the quantity of fluid in the storage tank.

Abstract: A liquid level sensor comprises a plurality of electrodes arranged in a defined relationship with respect to a container filling trajectory, a signal generator coupled to one or more of the plurality of electrodes, a signal receiver coupled to one or more of the plurality of electrodes, and a sensing circuit coupled to at least one of the signal generator and signal receiver. The sensing circuit is configured to produce an output indicative of electrical resistance between at least one pair of the plurality of electrodes. The sensing circuit may be associated with the signal receiver and/or with the signal generator.

Abstract: A yaw-rate sensor having a resonant driving frequency and a resonant Coriolis frequency. In addition, the yaw-rate sensor has at least one operating voltage, of which the resonant Coriolis frequency is a function. The resonant Coriolis frequency is adjusted to the resonant driving frequency with the aid of an adjustment voltage. A change in the resonant Coriolis frequency as a result of a change in the operating voltage may be compensated for, in that a suitably changed adjusting voltage may be produced from a compensation circuit.

Abstract: An electronic device includes a plurality of bonding wires through which first and second members are electrically connected, and at least adjacent two of the bonding wires have different wire shapes. For example, an angular velocity detector can be used as the electronic device. In this case, an angular velocity detecting element as the first member is electrically connected to a circuit substrate as the second member using the bonding wires, for example. Because at least adjacent two of the bonding wires have different wire shapes, parasitic capacitance between the bonding wires can be reduced without increasing the distance between adjacent bonding wires.

Abstract: Disclosed is a method and apparatus for measurement of the derivative of acceleration with respect to time (jerk) and the use of demodulation to analyze the jerk signal. The sensor used to measure jerk consists of a piezoelectric transducer coupled with an amplifier that produces a voltage or current signal that is proportionate to jerk. In applications including rolling element bearing diagnostics, demodulation is used to measure changes in the jerk signal over time.

Abstract: A multi-axial monolithic acceleration sensor has the following features. The acceleration sensor consists of plural individual sensors with respectively a main sensitivity axis arranged on a common substrate. Each individual sensor is rotatably moveably suspended on two torsion spring elements and has a seismic mass with a center of gravity. Each individual sensor has components that measure the deflection of the seismic mass. The acceleration sensor preferably consists of at least three identical individual sensors. Each individual sensor is suspended eccentrically relative to its center of gravity and is rotated by 90°, 180° or 270° relative to the other individual sensors.

Abstract: The present invention includes an apparatus and corresponding method for concentrating analytes within a fluid flowing through a tube using acoustic radiation pressure. The apparatus includes a function generator that outputs a radio frequency electrical signal to a transducer that transforms the radio frequency electric signal to an acoustic signal and couples the acoustic signal to the tube. The acoustic signal is converted within the tube to acoustic pressure that concentrates the analytes within the fluid.

Abstract: Underfill voids and solder ball defects are detected via laser generation and laser detection of an ultrasonic wave at the top surface of flip chips. High resolution is provided by using small laser spot sizes and closely-spaced laser beams of wavelengths that are absorbed near the surface of the semiconductor. Alternatively, the generation laser beam may be absorbed in the bulk of the semiconductor. Improved spatial resolution and rejection of unwanted scattered waves can be attained by limiting the time frame of the ultrasonic waveform to the time required for the first longitudinal wave reflection from the bottom of the flip chip. The laser beam spacing can be reduced by using overlapping probe and detection beams of different wavelengths. Resolution of less than 100 ?m features was demonstrated for silicon flip chips.

Abstract: Apparatus and method are provided for in-situ measurement of vibrational energy applied to a wafer in a process bath of a vibrational cleaning system. The apparatus may be made up of a test wafer comprising an array of pressure sensing elements disposed thereon for monitoring power level variation of a time-varying pressure wave. The time-varying pressure wave is indicative of vibrational energy that would be applied to a wafer in the process bath in the position of the test wafer.

Abstract: Engaging portions of an ultrasonic sensor apparatus are engaged with engaging portions of a holding member at a first angular position of the ultrasonic sensor apparatus when the ultrasonic sensor apparatus is axially installed to the holding member, which is in turn installed to a bumper. At the time of uninstalling the sensor apparatus from the holding member, one of the engaging portions is radially outwardly disengaged from a corresponding one of the engaging portions of the holding member, and then the sensor apparatus is rotated to a second angular position to release engagement between the rest of the engaging portions of the sensor apparatus and the rest of the engaging portions of the holding member. Thereafter, the sensor apparatus is axially pulled away from the holding member to uninstall the sensor apparatus from the holding member.

Abstract: A method of monitoring pressure of a gas species up to at most a predetermined maximum pressure value is disclosed. The method includes exposing the gas species to transmission of laser light, periodically modulating the wavelength of the laser light over a wavelength band including at least one absorption line of the gas species, optoelectrically converting the transmitted laser light, thereby generating an electric output signal, performing at least one of first filtering the electric output signal with a filter characteristic having a lower cut-off frequency not lower than a transition frequency and of second filtering the electric output signal with a bandpass filter characteristic having an upper cut-off frequency not higher than the transition frequency and a lower cut-off frequency above the modulation frequency of the periodic wavelength modulation. The output of at least one of the filterings is evaluated as a pressure indicative signal.

Abstract: In a resistively heated heat-loss pressure gauge, electrical current is switched between a sensing element and a compensating element at different duty cycles. As a result, the sensing element is heated relative to the compensating element. A fixed resistance is placed in series with at least the compensating element. The current source applies current to heat the sensing element to a temperature at which the resistance of the sensing element matches the combined resistance of the compensating element and the fixed resistive element.

Abstract: A gauge for indicating a measured variable such as pressure. The gauge includes a motion detection device including a drive magnet that is adapted to be moveable in response to changes in the variable. The pointer rotation device includes a pivot member, a power magnet coupled to the pivot member, and one or more director members located adjacent the power magnet. Each director member includes a generally helical flange. A pointer is coupled to the pointer rotation device. The director members and the power magnet form a magnetic field adapted to magnetically couple the pointer rotation device to the drive magnet. The pointer rotation device is adapted to rotate about a rotational axis. Movement of the drive magnet in response to changes in the variable rotates the pointer rotation device and the pointer about the rotational axis such that the pointer indicates the measured variable.

Abstract: In a resistively heated heat-loss pressure gauge, electrical current is switched between a sensing element and a compensating element at different duty cycles. As a result, the sensing element is heated relative to the compensating element. A fixed resistance is placed in series with at least the compensating element. The current source applies current to heat the sensing element to a temperature at which the resistance of the sensing element matches the combined resistance of the compensating element and the fixed resistive element.

Abstract: A system (200) monitors a load associated with a load carrying member. The system (200) may include a voltage divider (240) and a computer device (250). The voltage divider (240) measures inductance associated with load sensing elements (210) that monitor the load carrying member. The computer device (250) determines displacements of the load sensing elements (210) based on the inductance associated with the load sensing elements (210) and determines the load associated with the load carrying member based on the displacements of the load sensing elements (210). The system may be designed to be portable and/or DC powered.

Abstract: The subject invention pertains to a method and apparatus for testing the static load-bearing capacity of a pile. In an embodiment, one or more means for applying a test load can be disposed within a pile such that a pile element can be above the means for applying a test load, and a pile element can be below the means for applying a test load. Upon applying a test load, the pile element above the means for applying a test load and the pile element below the means for applying a test load tend to separate. The test loads applied to the pile can be controlled in response to the magnitude of the test load, the combined settlement rate of the pile elements, the displacement of the pile elements, and the compression of the pile elements. A test regime can continue until a programmed regime is completed or a fail-safe trigger event occurs.

Abstract: A system for tracking and monitoring data related to the manufacture, installation and/or life cycle of concrete structures, such as pilings, as well as related system components and methods for tracking, storing and accessing such data is provided. The system utilizes one or more embeddable antenna assemblies as well as sensor packages that are installed in the concrete structure form before casting. The antenna(s) provide wireless communication of the data from the structure. On board memory is also provided to store structure related data with the structure. A system for tracking a pile during driving is also provided.

Abstract: Acoustic volume indicators for determining liquid or gas volume within a container comprise a contactor to vibrate a container wall, a detector to receive vibration data from the container wall, a processor to convert vibration data to frequency information and compare the frequency information to characteristic container frequency vs. volume data to obtain the measured volume, and an indicator for displaying the measured volume. The processor may comprise a microprocessor disposed within a housing having lights that each represent a particular volume. The microprocessor is calibrated to provide an output signal to a light that indicates the container volume. The processor may comprise a computer and computer program that converts the data to frequency information, analyzes the frequency information to identify a peak frequency, compares the peak frequency to the characteristic frequency vs. volume data to determine the measured volume, and displays the measured volume on a video monitor.

Abstract: A Coriolis mass flowmeter features a measuring tube for guiding a flowing medium an oscillation-generating system with an oscillator for stimulating the oscillation of the measuring tube, and an oscillation-sensing system with an oscillation sensor for capturing the oscillations of the measuring tube. A first companion element is positioned opposite the oscillation-generating system at the same longitudinal distance of the measuring tube and a second companion element is positioned opposite the oscillation-sensing system at the same longitudinal distance on the measuring tube, with the mass of the first companion element corresponding to the mass of the oscillation-generating system and the mass of the second companion element corresponding to the mass of the oscillation-sensing system. The result is a Coriolis mass flowmeter with a high measuring accuracy. A method for producing the flowmeter is also disclosed.

Abstract: An encoder failure detector system and method for detecting failure of an encoder at near-zero rotational speeds. For example, in one embodiment a failure is indicated if a torque command exceeds a selected threshold for a selected period of time and no movement of a rotor is detected during the selected period of time.

Abstract: A torque detecting apparatus according to the present invention includes a first shaft and a second shaft connected coaxially to each other through a connecting shaft, a permanent magnet fixed to the first shaft, a plurality of soft magnetic members having a collar provided therein, fitted by pressing with the second shaft and disposed in a magnetic field of the permanent magnet to form a magnetic circuit, and a detector for detecting magnetic flux generated from the soft magnetic members, wherein the soft magnetic members are integrally molded with a mold body made of synthetic resin, and when a torque is applied to the first shaft or the second shaft, the torque is detected based on an output of the detector. The collar is made of a non-magnetic material.

Abstract: A seat belt tension sensor for measuring the amount of tension in a vehicle seat belt. The seat belt tension sensor has a housing and an anchor plate that is mounted in the housing. The housing moves relative to the anchor plate. A magnet is held by the anchor plate. A sensor is mounted to the housing. The sensor generates an electrical signal in response to relative movement between the housing and the anchor plate. The electrical signal changes in proportion to the amount of tension on the seat belt. A spring is mounted in association with the housing and the anchor plate. The spring biases the housing from the anchor plate. An integral connector extends from the housing.