Matches 201 - 250 out of 397 < 1 2 3 4 5 6 7 8 >
Match Document Document Title
5530680 Feature location and display apparatus  
Echo sounding apparatus mounted on a boat (52) comprises a transducer unit (1) connected to a display device (2) which contains a control and processing circuit (53) via a cable (3). Sound pulses...
5526321 Method of and apparatus for measuring distance to an obstacle utilizing an ultrasonic wave sensor  
The present invention relates to a method and apparatus for measuring distance to an obstacle which can be equipped to a self-propelled robot, and more particularly to a method and apparatus for...
5511041 Process for setting the transmission frequency of a distance measuring instrument operating according to the echo-sounding principle  
In order to set a range finding instrument operating according to the echo-sounding principle using sonic or ultrasonic pulses to an optimum transmission frequency, the transmission frequency is...
5508974 Method and device for ultrasonic distance measuring  
In a device for measuring the distance to an obstacle, a second transmission pulse as a control measurement for an ultrasonic distance measurement is transmitted only when an echo signal has been...
5504569 Distance-velocity predicting system  
A distance-velocity predicting system has an illuminator for projecting a light beam for searching for an obstacle, and a plurality of position sensors spaced at a distance corresponding to a base...
5503341 Fishline length measurement device  
In a fishline length measurement device for a fishing reel, a random access memory is provided for storing as a data map a relationship between spool rotation numbers and corresponding fishline...
5495765 Ultrasonic inspection system with improved electrical isolation scheme using step-up transformers  
The remote inspection of seam welds in reactor vessels is improved through the utilization of a pulser network which is inductively isolated from the transducer circuit to which it applies an...
5481504 Method and device for determining target speed and distance with frequency modulated pulses  
Frequency-modulated wave trains are used in target locating by means of transmitted pulses and evaluation of portions reflected by the target in relation to bearing, distance and speed, wherein the...
5432752 System for acoustically measuring the length of a pipe  
A calibration pipe having a predetermined length is connected to an end of a pipe to be measured. A sound emitter and a sound receiver are connected to a base end of the calibration pipe. The sound...
5426978 Non-destructive axle flaw detecting apparatus  
The flaw detecting apparatus comprises a sensor head including a first sensor for detecting the center of the center hole and a second sensor for detecting a flaw. A driver moves the sensor head...
5422861 Measuring method and apparatus  
A method and apparatus for measuring the dimensions and determining the three-dimensional, spatial volume of objects. An object detection system is employed to detect proper placement of an object...
5400300 Sonar system  
A system for providing advance warning of underwater navigation hazards that threaten safe ship passage is provided. The system includes a sonar transmitter/receiver adapted for mounting on the...
5395065 Fishline length measuring device for fishing reel  
A fishline length measuring device adapted to a fishing reel having a spool rotatably supported on a reel body for winding and unwinding a fishline thereon. The device has a spool rotation sensor...
5373482 Distance measuring system arranged to limit false indications of distance measurements  
A distance measuring system includes a device for detecting ringing signals (false echoes) generated by ultrasonic transducers used to generate probe signals and detect echoes of the probe signals...
5369347 Self-driven robotic cleaning apparatus and driving method thereof  
A self-driven robotic cleaning apparatus and method thereof which can reduce the production cost and shorten the cleaning time and thereby increase a cleaning efficiency, comprising: an infrared...
5357801 Liquid-level gauging  
An ultrasonic liquid level gauging sensor has a transducer at the lower end of a tube that is filled with liquid to the same height as liquid outside the tube. The sensor has an axial rod extending...
5341346 Portable narrow angle sonar range finder  
A small "flashlight" size pointing device for use as a sonar obstacle avoidance system for the blind. The apparatus comprises a bundle of small diameter tubes mounted in front of and perpendicular...
5341345 Ultrasonic stand-off gauge  
An ultrasonic stand-off gauge for use in measuring the instantaneous stand-off distance between the drill stem and the borehole wall while drilling. A primary transducer mounted on the drill collar...
5339281 Compact deployable acoustic sensor  
A sensor for detecting acoustic energy emitted by a target is disclosed. The sensor comprises a housing including a plurality of transducers for receiving acoustic energy. The transducers are...
5337053 Method and apparatus for classifying targets  
A method and apparatus for classifying objects based upon information conned in the fourth order cumulant derived from energy from the object. Successive pulse returns in active systems and samples...
5327783 Method of monitoring heat exchanger vibrations  
A non-intrusive vibration measurement system and method using commercial ultrasonic instruments together with digital signal filtering and analysis techniques is adapted to quantitatively detect...
5323361 Method and an arrangement for distance measurement using the pulse transit time principle  
For the measurement of distance using the pulse transit time principle the received signal produced after each transmission of a pulse is stored as an echo profile and the effective echo is...
5319973 Ultrasonic fuel level sensing device  
In one aspect of the present invention, an apparatus for measuring the height of liquid contained in a storage tank is disclosed. A tube is disposed inside the tank. A float is disposed inside the...
5319974 Ultrasonic level measuring system  
To determine the depth of a body of water, ultrasonic pulses are transmitted from a point above the water at a known distance. Reflections from the water are received and the time of each of the...
5315563 External sealed intrusive mounting arrangement for a fuel level sensor  
An intrusive fluid sensor mounting arrangement for a fluid container includes first and second tubes, the first tube being attachable to a wall of the container such that a first end of the first...
5309410 Tuned circuit for sonar beam pattern optimization  
A sonar system using closely spaced or interleaved projector and receiving transducer elements with a power inductor connected in series with the projector array transmits three separate...
5307273 Apparatus and method for recognizing carpets and stairs by cleaning robot  
Apparatus and method for determining the condition of the floor to be cleaned by a cleaning robot. The apparatus comprises an ultrasonic wave signal transmitting circuit for transmitting an...
5303204 Submerged object warning and logging system  
A device to warn a ship crew of submerged objects in their immediate vicinity, combined with alarm and logging facilities. The device is composed of one or more sonic or ultra sonic transducers...
5297109 Piling and pier inspection apparatus and method  
The objects of the present invention are achieved by a method and means for temporarily suspending sonar beam transducer means on a dihedral wing body at a first underwater location within sonar...
5295119 Proximity device  
A proximity device for use in determining a distance and an angular displacement between the proximity device and an object or nearest surface of an object whereby alignment can be implemented. The...
5287627 Automatic plumb and level tool with acoustic measuring capability  
An automatic plumb, level, pointing and distance measuring tool uses a visible laser diode to project a beam in any of several different modes through a beam exit window. The tool, approximately...
5285388 Detection of fluid reflection for echo sounding operation  
An echo sounding system includes an acoustic gun which is mounted to the wellhead of a borehole. The acoustic gun produces an acoustic pulse which is transmitted down the borehole. A tubing string...
5277543 Device for monitoring abrasion loss of a thrust bearing in a submerged motor pump  
A submerged motor pump is provided in a piping system or connected to a pressure vessel, and a pump and a motor are immersed in the fluid. A rotor rotatable together with a pump impeller is fixed...
5267219 Acoustic range-finding system  
In an acoustic pulse-echo ranging system, a high impedance piezoelectric transducer element is connected via a transformer to a transmitter, and also directly to a high impedance input of a...
5263371 Methods for temperature-compensated liquid height and leak detection measurements using quasi-static reference subsystem  
A method for measuring the temperature-compensated change in the height of a surface of a liquid. The method positions an acoustic signal transducer for emitting and receiving acoustic signals...
5260910 High resolution acoustic pulse-echo ranging system  
The uncertainty inherent in high-resolution acoustic pulse-echo distance measuring systems which depend on threshold detection is overcome by transmitting a multi-cycle shot of acoustic energy...
5260912 Side-looking fish finder  
A side-looking fish finding apparatus transmits a sonar pulse approximately horizontally into a body of water, and then monitors echoes from the pulse. The time interval between successive sonar...
5257545 Method and apparatus to monitor check valves  
A non-intrusive vibration measurement system and method using commercial ultrasonic instruments together with digital signal filtering and analysis techniques is adapted to quantitatively detect...
5256908 Facility space data logging device  
The invention is directed to a portable data logging device for logging d concerning room identification and dimensions in a building or facility. The invention includes a microprocessor based...
5247487 Spatial measurement recovery system  
A spatial measurement recovery system and method which determining the position, orientation, shape and/or operational characteristics of an environment. The system includes a data gathering...
5235559 Method and apparatus for determining bedload thickness employing standing wave measurements  
The invention generally pertains to apparatus for determining bedload thickness of a bedload on a bed surface in an aquatic medium. An acoustic source is operative when energized for producing...
5231609 Multiplatform sonar system and method for underwater surveillance  
A system and method of indirect underwater acoustic ocean surveillance is sclosed requiring at least two sonar platforms, usually ships, travelling some distance apart. At least one of the...
5229541 Torpedo safety system  
A safety system for deterring a homing missile from attacking its launching ehicle whereby the launching vessel is enabled to alter the course and neutralize the detonator of the weapon.
5229975 Vehicle proximity sensor  
A vehicle sensing system includes a data bus, a first microprocessor coupled to the bus and a plurality of sensor modules about a vehicle periphery for detecting the presence of objects within a...
5226320 Measuring device and process for determining the fill level in fluid containers, preferably for tank installations, with a sound waveguide  
In a level measuring device for containers filled with fluid, preferably tanks in tank installations, the fill level height h is determined from the transit time of ultrasound pulses which are...
5213472 Inboard servo for marine controllable pitch propellers  
An inboard servo for a controllable pitch propeller of the force rod type comprises a feedback device comprising a feedback ring located externally of the propeller drive shaft, affixed to the...
5214616 Nuclear reactor vessel inspection system and method with remote transducer positioning  
The inspection head component of a manipulator employed in the inspection of the interior surface of a nuclear reactor vessel is aligned to an optimum orientation when positioned at a local surface...
5206652 Doppler radar/ultrasonic hybrid height sensing system  
A height measurement system uses an inexpensive ultrasonic height measuring evice to provide an apparent height of a descending airborne object. To compensate for movement of the object during the...
5206838 Ultrasonic transducer  
An ultrasonic transducer is provided with an ultrasonic transmitter; an ultrasonic receiver; and a propagation-delay-time calculating device for calculating a propagation delay time from the time...
5195059 Acoustic pipe length measuring apparatus  
An acoustic pipe length measuring apparatus for measuring the length of a pipe-like member in accordance with the time between the emission of a pulse-like sound wave from a speaker at one end...
Matches 201 - 250 out of 397 < 1 2 3 4 5 6 7 8 >