Matches 1 - 50 out of 221 1 2 3 4 5 >


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8220336 Servo-type vibration detector  
A movable plate is provided to a pendulum displaceable by external vibration. A fixed plate is provided to a position opposite to the movable plate. A displacement detector detects an...
7819004 Vehicle sensor  
A vehicle sensor assembly includes a housing assembly and a printed circuit board having a plurality of electronic components provided thereon, mounted in the housing assembly. A connector...
7544910 Vibration sensor built in an object  
A vibration sensor includes casing, substrate, and elastic metal piece; two electrode areas separated by a separation zone being provided on the substrate; a vibration contact being provided on...
7500394 Fastener integrated sensor  
A fastener integrated sensor includes a fastener, an overmold, an electronic sensor, a printed circuit board, a plurality of circuit components, a plurality of signal terminals, and a connector...
7450025 Level/position sensor and related electronic circuitry for interactive toy  
A sensor for use in an interactive electronic device. The sensor is operative to generate a plurality of different output signals corresponding to respective positions of the sensor relative to a...
7284431 Geophone  
An improved system for sensing ground motion is provided. The system generally comprises a shell and a case within the shell and connected by a suspension. The mass of the case is greater than the...
7134334 Integrated fastener and motion detector  
A motion detector capable of sensing motion of an object includes a motion sensor secured to one of a plurality of surfaces of a fastener. The fastener is directly coupleable with the object.
7036378 High and low frequency band dual output transducer  
A sensor circuit, method, and system for conversion of a high-impedance, broad frequency range signal from a transducer into two low-impedance signals, one containing high-frequency components and...
6981420 Omni-directional movement sensor  
A microphone is enclosed in a semi-sound insulated housing with a jingle bell type device that generates sound in response to a very slight movement and/or vibration of the housing and/or a...
6978675 Vehicle maintenance sensing device and method therefor  
A vehicle maintenance device for acoustical and vibration sensing of an engine has a flexible wand member having a channeling running the length of the flexible wand member. A housing is coupled...
6915697 Testing and monitoring of a shock wave or pressure wave source  
A device for the testing and monitoring of the function of a shock wave or pressure wave source is provided. The testing and monitoring device is characterized in that a passive non-linear...
6868714 Vibration sensor for fixing directly or indirectly to a vibrating component  
A vibration sensor for direct or indirect mounting on a vibrating component has a housing, a pressure sleeve having a central bore and a piezoelectric disk situated between two insulator disks and...
6786078 Vibration pickup comprising a clamping sleeve  
A vibration sensor having a pressure sleeve in which the pressure sleeve may be mounted under pressure on a component causing vibration. To detect a vibration signal, e.g., in the case of a knock...
6739182 Vibration pickup and an insulating disk for a vibration pickup  
A vibration sensor for direct or indirect mounting on a vibrating component such as an engine block. The vibration sensor has a housing and a pressure sleeve, which includes a central bore, a...
6532795 Vibration pickup with a pressure sleeve  
A vibration pickup has a pressure sleeve mountable directly or indirectly on a component which causes vibrations, a sensor element which is held radially outwardly on the pressure sleeve with an...
6295871 Vibration sensing device  
A vibration sensing device has a spherical shell, an insulating cushion inserted in a top portion of the spherical shell, a conductive probe rod passing through the insulating cushion, a...
6279381 Vibration pickup with pressure sheath  
A vibration transducer has a pressure sleeve fastenable directly or indirectly on a structural component part causing vibrations, a sensor element which is held at the pressure sleeve on a radial...
6257065 Strain gauge vibration sensor  
A drive line vibration sensor includes a housing having a strain gage attached to the drive line component, and an actuator disposed within the housing. In operation, the actuator exerts a force...
6220096 Differential wideband vibration  
This invention relates to an apparatus for making highly sensitive differential measurements of acceleration. The vibration sensor includes the use of moveable gate field effect transistors to...
6109110 Low frequency vibration sensor  
A low frequency vibration sensor includes a permanent magnet, a sensor body, a steel spheroid, and a piezoelectric element. The sensor body has a pillar shape and is made of plastic material...
6069560 Detector for detecting vibrations  
A security system having a vibration detector that senses vibration in any direction is disclosed. The vibration detector includes two or three detector elements that each have a magnet, and a...
6034613 Shock and vibration sensor  
A sensor assembly for monitoring shocks and vibrations on sensitive devices is provided. The sensor assembly comprises a detector beam supported between a pair of support members. A detector...
6026690 Vibration sensor using the capacitance between a substrate and a flexible diaphragm  
PCT No. PCT/JP95/01184 Sec. 371 Date Feb. 1, 1996 Sec. 102(e) Date Feb. 1, 1996 PCT Filed Jun. 14, 1995 PCT Pub. No. WO95/35485 PCT Pub. Date Dec. 28, 1995A vibration sensor includes a substrate...
5905044 Mass manufacturing method of semiconductor acceleration and vibration sensors  
A mass manufacturing method of semiconductor acceleration and vibration sensors uses a dispensing method, a electrical plating method, a screen-printing method or a preforming method in...
5874675 Wideband vibration sensor  
This invention relates to an apparatus for making highly sensitive measurements of acceleration. The vibration sensor includes the use of a movable gate field effect transistor to sense the motion...
5872307 Vibration pick-up with pressure sleeve  
A vibration pick-up with a pressure sleeve is mounted by a mounting element extending through a central opening of the pressure sleeve. The pressure sleeve is clamped with an abutment surface on a...
5847278 Accelerometer with shear isolated mounting  
An accelerometer providing shear isolation from unwanted shear forces by means of a shear isolation member located inside the accelerometer housing. The shear isolation member is rigidly attached...
5798460 Vibration sensor employing a flexible diaphragm and an electret film  
A vibration sensor includes a substrate (5), a plate-like diaphragm (3) forming a capacitor, and holding means (2), (4), (6) for holding the diaphragm so as to be movable in parallel to the...
5754115 Impact sensing system  
An impact sensing system senses an impact or acceleration applied and provides an external alarm indicative of the impact or acceleration applied. An envelope detector detects an envelope of an...
5734107 Acceleration sensor  
An acceleration sensor having a piezoelectric sensor element, which is supported as a flexural resonator in a holding module and whose electrodes are connected to an evaluation circuit. The...
5668319 Micromachined accelerometer  
A fluid proof mass accelerometer fabricated from bonded substrate layers. The device includes a plurality of micromachined fluid cavities which are joined by micromachined fluid channels. The...
5663894 System and method for machining process characterization using mechanical signature analysis  
A system and method for characterizing a machining process using techniques of mechanical signature analysis produces discriminants based on vibrational activity, measured at various positions on...
5644086 Preloaded linear beam vibration sensor  
An miniaturized accelerometer having a narrow bandwidth and behaving as a switch sensitive only to low frequencies such as contained in earthquakes includes: a unbalanced see-saw beam assembly...
5633463 Earthquake detector  
An earthquake detector including a platform fixedly coupleable to a recipient surface for receiving vibrations generated as a result of an earthquake; a spring-loaded frame secured to the...
5625348 Method and apparatus for detecting local precursor seismic activity  
A method and apparatus for sensing one or more physical parameters, including acoustic waves having frequencies from approximately 0 Hz to 15 Hz, electromagnetic waves having frequencies from...
5585566 Low-power shock detector for measuring intermittent shock events  
A shock detector for measuring intermittent shock events comprises a mechanical delay line to supply delayed output motion in response to input motion along an input axis. A transducer converts...
5566573 Capacitive acoustic wave detector and method of using same  
A capacitor having two substantially parallel conductive faces is acoustically coupled to a conductive sample end such that the sample face is one end of the capacitor. A non-contacting dielectric...
5477735 Two-wire constant current powered transducer  
A two-wire constant current powered transducer (10) for detecting, integrating and transmitting an acceleration signal (50) received from a piezoelectric crystal (12). The crystal is operatively...
5473941 Encapsulated accelerometer with faraday shielding  
An accelerometer with internal electronics is mounted within a Faraday shield and encapsulated within a non-electrically conductive material applied by hot injection molding at a high pressure to...
5447065 High-fidelity particle velocity gauge for measuring strong motions in a solid medium  
Disclosed is a particle velocity gauge for measuring long term (over one lisecond duration) particle velocities in solids which are subjected to high-powered sources, such as high-explosive...
5396223 Earthquake detecting apparatus  
A vibration sensor has a bell shaped casing with a recess formed at its closed end. The recess has a flat bottom and slanted side walls so that an opening of the recess is larger than the bottom...
5379643 Mount assembly for use with vibration transducers  
An assembly is provided for mounting a vibration transducer such as an accelerometer with a hand grip and probe for hand-held vibration data gathering. By the simple maneuvering of plugging in a...
5373448 Knock detection device for an internal combustion engine  
A knock detection device being provided with a plurality of digital filter units, each is designed to cover respective characteristic resonance vibration frequency components inherent to resonance...
5325718 Dual-frequency vibration sensor  
A vibration sensor is secured to an object whose vibrations are to be sensed, and includes a vibration plate capable of resonating at one of first resonance frequencies within a specific high...
5323639 Vibration sensor  
A vibration sensor is provided in which the depth of a caulked portion of the season's case is increased so as to increase the capacity of a recess defined between this caulked portion and the...
5248959 Earthquake warning device  
An earthquake warning device including a speaker disposed in a housing, a casing disposed above the housing, a pair of electrically conductive sheet members disposed in a lower portion of the...
5218870 Vibration sensor including a reduced capacity lower portion for maintaining airtightness and enhancing reliability  
A vibration sensor is provided in which the depth of a caulked portion of the sensor's case is increased so as to increase the capacity of a recess defined between this caulked portion and the...
5144598 Intergrating, indicating, and controlling seismometer  
A seismometer system which provides readouts of the time integral (Cumulative Absolute Velocity or CAV) of the acceleration time history of an earthquake. CAV is found to be a measure of the...
5130600 Acceleration sensor  
This invention relates to an acceleration sensor having less output drift due to temperature change and noise due to external induction which includes a piezoelectric device formed of a...
5101195 Discriminating earthquake detector  
An earthquake detector is provided for mounting on a structural member of a building or the like, which is resistant to false alarms arising from door slamming, traffic, running, sonic booms,...

Matches 1 - 50 out of 221 1 2 3 4 5 >