Bizarre Patents
Pizza Pie With Concentric Rings of Crust
A pizza mold for forming a plurality of concentric raised ridges of dough (i.e., crust) on the surface of a pizza pie.
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 7412763 | Method of making an acoustic assembly for a transducer A method of making an acoustic assembly for use in a transducer includes forming a multi-layer assembly. The multi-layer assembly includes a first layer member and a second layer member. Each member includes a center portion, an edge portion and an aperture separati... | 08/19/2008 |
| 7393331 | Vortex bubble-removing and cooling system for the electromagnetic shock wave generator for the lithotripter The present invention relates to a vortex bubble removing and cooling system for the electromagnetic shock wave generator in the lithotripter. The vortex bubble-removing and cooling system comprises a water-full cushion (17), a metal diaphragm (14) ins... | 07/01/2008 |
| 7376048 | Underwater sound projector and underwater sound projection method Disclosed is an underwater projector projecting a sound underwater. The underwater projector includes a first disk-type resonator unit, a second disk-type resonator unit, and a central space. The second disk-type resonator unit is installed so that a central axis co... | 05/20/2008 |
| 7311677 | Energy concentrator system and method Reflective apparatus and method by which energy is radiated in divergent fashion from an elongated source and is reflected by a first parabolic reflector as a paraxial beam, focused by a second parabolic reflector onto a hyperbolic reflector and reflectively concent... | 12/25/2007 |
| 7311678 | Pressure-pulse therapy apparatus Disclosed is a device for producing an intracorporeal pressure pulse comprising a pressure pulse source configured to generate a collimated pressure pulse and an acoustic lens including at least one ring-shaped focusing section configured to focus a pressure pulse g... | 12/25/2007 |
| 7266046 | Miniature low frequency acoustic transmitter A miniature lightweight transmitter that mechanically generates low-frequency acoustic energy is described, wherein one or more miniature balloons filled with air are positioned at the center of a pressure vessel filled with water and tethered in place. The system i... | 09/04/2007 |
| 7239577 | Apparatus and methods for multicomponent marine geophysical data gathering In one embodiment the invention comprises a particle velocity sensor that includes a housing with a geophone mounted in the housing. A fluid that substantially surrounds the geophone is included within the housing. The particle velocity sensor has an acoustic impeda... | 07/03/2007 |
| 7204009 | Manufacturing method of acoustic sensor The present invention relates to a semiconductor electret condenser microphone capable of being reduced in size and including an acoustic sensor 100 and a case 200 for accommodating the acoustic sensor 100, the acoustic sensor 100 has a s... | 04/17/2007 |
| 7080442 | Manufacturing method of acoustic sensor The present invention relates to a semiconductor electret condenser microphone capable of being reduced in size and including an acoustic sensor 100 and a case 200 for accommodating the acoustic sensor 100, the acoustic sensor 100 has a s... | 07/25/2006 |
| 7028807 | Non-explosive acoustic source A non-explosive acoustic source utilizes the combustion of aluminum and water to generate an acoustic pulse. The operation of the non-explosive acoustic source relies on a water/aluminum reaction to generate a burst pressure. The source may be deployed as a single c... | 04/18/2006 |
| 6928720 | Method of manufacturing a surface acoustic wave device A surface acoustic wave device includes a piezoelectric substrate and at least one interdigital electrode disposed on the piezoelectric substrate. The interdigital electrode is made of α-tantalum. ... | 08/16/2005 |
| 6873572 | Low-frequency sonar countermeasure A multi-port projector of acoustic energy in water includes a cylindrical hollow transducer having open annular ends. A thin, flexible member is secured to each annular end to extend across each opening to be displaced by the transducer, and the transducer and flexi... | 03/29/2005 |
| 6814180 | Monopole-driven underwater sound source An underwater sound source which comprises a housing having an inner and an outer surface and a monopole driver suspended within the center of the housing. The housing is adapted to receive fluid therein to form a fluid column inside the housing. The underwater soun... | 11/09/2004 |
| 6755796 | Pressure-pulse therapy apparatus A pressure-pulse therapy apparatus, including a dome-shaped reflector, at least one ring section, a central x-axis, an open end, a flexible diaphragm capping the open end, a fluid medium within the reflector and diaphragm, a pressure-pulse source immersed in the flu... | 06/29/2004 |
| 6751162 | Seismic sensor A seismic sensor contains a geophone (4) disposed within a housing (12). The sensor is also provided with locking means (14, 19, 21) that can either lock the geophone 4 relative to the housing, or can allow the geophone to rotate within t... | 06/15/2004 |
| 6584038 | Device for receiving seismic waves and method for coupling them with a solid environment Seismic wave reception device comprising a hydrophone and/or a geophone and method for coupling it (or them) with a solid medium such as the subsoil. The device comprises at least one hydrophone (2) immersed in a closed flexible-walled sheath (7) filled with l... | 06/24/2003 |
| 6275448 | Pressure-compensated acceleration-insensitive hydrophone A generally cylindrical hydrophone configuration provides compensation for longitudinal accelerations by placing four identical solid piezoelectric transducer elements along its axis with each transducer element being bonded to a head member, two of which... | 08/14/2001 |
| 6173803 | High amplitude sound wave generator A method and device for generating a high amplitude sound wave is provided. The device includes a housing having an open end. A piston is slidably disposed in the open end of the housing and forms a chamber for holding a pressurized liquid. The pressurize... | 01/16/2001 |
| 6172940 | Two geophone underwater acoustic intensity probe Acoustic intensity is measured by a submerged probe consisting of two passive geophones mounted in spaced relationship with their sensing axes aligned. The geophones are connected through a cable to a remote spectrum analyzer in which acoustic intensity i... | 01/09/2001 |
| 5889731 | Vibration detector A vibration detector is disclosed. The vibration includes a ring (2) closed at its opposite ends by two ring ends (3, 4), that is externally covered with a sheath (11) made from an elastic material transparent to vibrations, two supporting plates (5) with... | 03/30/1999 |
| 5555221 | Device for picking up sound waves propagating in water A chain of elongate components (10, 20) are connected end-to-end. Each component (e.g. 10) comprises a sheath (1) closed at its ends filled with a dielectric liquid (e.g. kerosene). Sound detectors are located in the liquid as are electric conductors for ... | 09/10/1996 |
| 5531119 | Ultrasound probe with bubble trap An ultrasound probe housing has at least one air bubble trap disposed therein and configured to facilitate movement of air bubbles away from a window thereof and also configured to resist movement of the air bubbles back toward the window. Preferably, two... | 07/02/1996 |
| 5469406 | Method of emitting very low frequency high power acoustic waves, and corresponding transducers therefor A transducer includes one or more electro-acoustic motors located on a same internal plane or as a peripheral ring of a flexible envelope to which they are interdependent by at least one-of their ends by an assembling device and to which they transmit the... | 11/21/1995 |
| 5355351 | Underwater low-frequency sound producer using a rare earth alloy An underwater low-frequency sound producer comprises vibrator units each including a magnetostrictive rod formed of a rare-earth alloy, a permanent magnet for providing a magnetic bias to the rod, prestress bolts for prestressing the rod, a coil wound on ... | 10/11/1994 |
| 5279282 | Acoustic wave generator having a circulatable, liquid acoustic propagation medium An acoustic wave generator has a shockwave source contained in a housing with a volume between the shockwave source and the location at which the acoustic waves exit the generator which is divided into two sub-volumes, each filled with acoustic propagatio... | 01/18/1994 |
| 5270985 | Seismic pulse generation An acoustic wave energy generator comprises a body having an internal gas-pressurisable first chamber 1 adjoining a second chamber 2 into which a liquid is introduced to cover a vibratable means 4 which may be a flexible diaphragm and is mounted on the se... | 12/14/1993 |
| 5218576 | Underwater transducer An underwater transducer comprises a piezoceramic transduction layer and a etal substrate with a thin film of viscous fluid between them. The viscous film allows the transduction layer and substrate to expand and contract relative to each other when the la... | 06/08/1993 |
| 5206839 | Underwater sound source In the underwater sound source disclosed herein, rigid diaphragms are provided at opposed ends of a hollow shell, the periphery of each of the diaphragms being sealed to the shell. Respective spring means operating between the shell and each of the diaphr... | 04/27/1993 |
| 5200932 | Underwater audible signalling device A signalling device with a long audible range is described, which is intended for underwater communication between divers. The device consists of a compact and lightweight horn and a rubber bulb. The horn, which works independently from a diver's supply o... | 04/06/1993 |
| 5126980 | Self-orienting vertically sensitive accelerometer A self-orienting vertically sensitive accelerometer is disclosed for measuring a vertical component of acceleration independently of the orientation of the accelerometer. The accelerometer of the present invention includes a spherical plastic shell having... | 06/30/1992 |
| 5111805 | Piezoelectric transducer There is disclosed, a piezoelectric transducer for generating focussed ultrasonic shock waves for use in lithotripsy. The ultrasonic shock waves are emitted in pulsed form and can be transmitted by way of a coupling medium to the body of a patient to be t... | 05/12/1992 |
| 5068836 | Sound generating transducer A flextensional sonar transducer comprising a first cavity defined by an elliptical shell and end plates covering the two ends of the shell, vibration drive means inside the cavity and coupled between portions of the shell wall at opposite ends of the maj... | 11/26/1991 |
| 5062089 | Sonar projector with liquid mass loading for operation at lower frequency A sonar projector having a pair of opposed oscillating pistons driven by an electromagnetic assembly is rendered capable of operating at reduced resonant frequency by providing liquid mass loading for the pistons. The mass loading is achieved by utilizing... | 10/29/1991 |
| 5047996 | Sonar transducer A sonar transducer wherein a plurality of transducer modules are affixed along the length of a mounting member in the form of an elongated bar. The bar is contained within a protective housing and the mid point of the mounting member is affixed to the bac... | 09/10/1991 |
| 5046056 | Self-orienting vertically sensitive accelerometer A self-orienting vertically sensitive accelerometer is disclosed for measuring a vertical component of acceleration independently of the orientation of the accelerometer. The accelerometer of the present invention includes a spherical plastic shell having... | 09/03/1991 |
| 5003285 | Transducer array A transducer array designed for towing at an extended distance behind a sace vessel includes electroacoustical transducer elements connected in opposition to the active elements of the array. A surrounding acoustic isolation structure effectively isolate... | 03/26/1991 |
| 4996675 | Signal sensor insensitive to static pressure variations A signal sensor automatically compensates for the variations of the static pressure of the medium in which it is placed. The signal sensor comprises one or two assemblies each formed of a piezoelectric sensitive element applied against one face of a flexi... | 02/26/1991 |
| 4991153 | Vibration type transducer The apparatus of the present invention detects the resonant frequency of a vibratory member in contact with a fluid. The detection of the resonant frequency enables the device to be used to detect the density of a fluid which it is in contact with and the... | 02/05/1991 |
| 4918666 | Tubular piezo-electric sensor with high sensitivity A tubular piezo-electric sensor has at least one sensitive element disposed against an outer surface of a tubular support. A substance whose acoustic impedance is very different from that of the material forming the tubular support is disposed therein and... | 04/17/1990 |
| 4890687 | Borehole acoustic transmitter An acoustic transmitter for use in a borehole logging tool employs multiple Helmholtz resonators stacked such that apertures in opposite sides of each of the resonators are in linear alignment so as to provide increased acoustic energy output over a broad... | 01/02/1990 |
