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A fork with timer for providing a cue to a user after an elapsed period of time for indicating that another bite of food using the fork may be taken.
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| Number | Title | Issue Date |
| 7207222 | Electromagnetic piezoelectric acoustic sensor The invention relates to an electromagnetic piezoelectric acoustic sensor (EMPAS). The sensor comprises a piezoelectric sensor plate spaced apart from an induced dynamic electromagnetic field, such as from an electromagnetic coil through which AC current flows. The ... | 04/24/2007 |
| 6915875 | Acoustic isolator for downhole applications A plurality of heavy mass irregularities attached to an inner wall of the drill collar attenuate waves traveling through the collar. The plurality of heavy mass irregularities are spaced and sized for the maximum attenuation of acoustic pulses in a predetermined fre... | 07/12/2005 |
| 6883638 | Accelerometer transducer used for seismic recording Method for operating and testing a sensor assembly (210). The sensor assembly (210) preferably includes accelerometers with axes of sensitivity orthogonal to each other. The method preferably includes determining sensor tilt angle, determining the posi... | 04/26/2005 |
| 6791470 | Reducing injection loss in drill strings A system and method for transferring wave energy into or out of a periodic structure having a characteristic wave impedance profile at a prime frequency, the characteristic wave impedance profile comprising a real portion and an imaginary portion, comprising: locati... | 09/14/2004 |
| 6349791 | Submarine bow dome acoustic sensor assembly A submarine bow dome acoustic sensor assembly comprises an outer hull bow portion, an inner pressure hull wall extending athwartships and in conjunction with the outer hull bow portion defining a free-flood compartment, and an acoustic bow panel disposed ... | 02/26/2002 |
| 6341661 | Bow dome sonar A compact, modular sonar assembly for use on the bow of a ship having separate transmitting and receive arrays confined within a single acoustic housing. The narrow and compact design fits much better into the hydrodynamically desirable bulbous bow deign ... | 01/29/2002 |
| 6065562 | System for imparting compressional and shear waves into the earth A seismic vibrator system for imparting compressional and shear wave vibrations into the earth has an earth contacting base with a vertical post. A tubular hub is slidably received on the post in a piston/cylinder relationship. Spaced apart horizontal top... | 05/23/2000 |
| 5696489 | Wireless boundary monitor system and method A wireless boundary monitor system used to monitor the integrity of a boundary surrounding an area uses at least two housings having at least one transmitting means for emitting ultrasonic pressure waves to a medium. Each of the housings has a plurality o... | 12/09/1997 |
| 5660909 | Sheet for measuring ultrasonic waves A sheet for measuring ultrasonic waves with which it is possible to easily measure a 2-dimensional ultrasonic wave distribution comprises a fluid in which multiple bubbles, each consisting of a minute quantity of gas covered by an extremely thin covering,... | 08/26/1997 |
| 5355312 | Inverse tomography by matched field processing To determine the speed of propagation of a signal in a medium, wave amplitude is measured over time at one or more detectors disposed within the medium so as to detect and identify signals transmitted at one or more sources disposed within said region. Fr... | 10/11/1994 |
| 4939703 | Transducer baffle and sensor using same A baffle for enlarging the field of view of and enhancing collection of radiation for a sensor apparatus having a transducer for receiving radiation within its field of view. The baffle includes a base securable proximate the transducer, and at least one ... | 07/03/1990 |
| 4796726 | Ultrasonic rangefinder An ultrasonic rangefinder capable of detecting a distance between a vehicle and an object with high accuracy is shown. The measure of microphones for transmitting and receiving ultrasonic waves is chosen so that detour waves are restricted.... | 01/10/1989 |
| 4739860 | Ultrasonic rangefinder An ultrasonic rangefinder capable of detecting a distance between a vehicle and an object with high accuracy is shown. The measurements for microphones for transmitting and receiving ultrasonic waves are chosen so that detour waves are restricted.... | 04/26/1988 |
| 4651740 | Implant and control apparatus and method employing at least one tuning fork The apparatus and method are utilized in controlling an implanted device, such as a cardiac pacer, by use of acoustic vibrations generated by a tuning fork. These vibrations are applied externally to the skin overlying the implanted device and are sensed ... | 03/24/1987 |
| 4450436 | Acoustic alarm repeater system An acoustic alarm repeater system detects a coded alarm signal such as might be produced by a smoke detector or burglar alarm. The alarm signal can vary over a wide dynamic range since the signal will usually be greatly attenuated by intervening walls or ... | 05/22/1984 |
| 4300217 | Acoustic transducer housing A housing for an acoustic transducer includes means for dispersing internal reflections within the housing to minimize the incidence of such internally reflected acoustic pulses on the transducer itself, thereby avoiding the generation of spurious electri... | 11/10/1981 |
| 4196789 | Protection by underwater sound waves Underwater protection for ships, for channels at harbor entrances and the like is obtained by the use of this invention in which one or more sending wires are put under tension under water and a mechanical vibration is applied to each sending wire longitu... | 04/08/1980 |
| 4186373 | System for measuring in situ acoustic energy properties of ocean floor soils A hollow, projectile-shaped body containing an acoustical transducer is rased into the sea such that the body descends in free fall until it strikes and penetrates the sea floor, coming to a rest therein. Acoustic signals emanating from the acoustic tran... | 01/29/1980 |
| 4158781 | Transmit receive solid state switch for electroacoustic transducers A solid state transmit-receive switching element having multiple resonant rcuits connected in a bridge arrangement by back-to-back zener diodes. While receiving, the zener diodes have a high impedance and the bridge arrangement acts as two series tuned ci... | 06/19/1979 |
| 4042910 | Method of seismic exploration A method of suppressing noise trains that develop from harmonics of a vibrator-type sweep signal. It includes the step of generating a plurality of such sweep signals in series and with the phase of each succeeding sweep signal being shifted relative to t... | 08/16/1977 |
| 4037222 | Supervision of transducers The operability of one or more audio speakers is monitored by continuously transmitting a non-audio signal on the lines connecting to the speakers and providing a vibration sensitive transducer such as a piezoelectric transducer which continuously picks u... | 07/19/1977 |
| 3973250 | Acoustically coupled burglar alarm system An ultrasonic whistle is mounted together with a pin on a window or door so that movement of the window or door causes relative movement between the whistle and pin. Such movement releases compressed gas from a container which activates the whistle. A cen... | 08/03/1976 |
