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.
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| Number | Title | Issue Date |
| 7104178 | Active armor including medial layer for producing an electrical or magnetic field An active armor system, which includes a first armor layer and a second armor layer. An interior space is interposed between the first and second armor layer. A third layer is also positioned preferably adjacent to and on the inner side of the first layer. This thir... | 09/12/2006 |
| 7069795 | Sensor using electro active curved helix and double helix Various sensors use an electro-active device (11) electrically connected to a detector circuit. The electro-active device (11) comprises an electro-active structure in the form of a continuous electro-active member (12) curving in a helix around... | 07/04/2006 |
| 6784600 | Ultrasonic membrane transducer for an ultrasonic diagnostic probe The invention is directed towards structures for use with micro-formed membrane ultrasonic transducers, and methods for fabricating the structures. In one embodiment, the transducer includes a planar member having a piezoelectric material and spaced apart electrodes... | 08/31/2004 |
| 6278658 | Self biased transducer assembly and high voltage drive circuit An improved transducer arrangement for low frequency sonar projectors that convert electric signals to mechanically generated acoustic signals. In one embodiment the arrangement has both a convex flextensional transducer and a concave flextensional transd... | 08/21/2001 |
| 6076629 | Low frequency flextensional acoustic source for underwater use There is provided an acoustic source especially for use in seismic studies at sea. The acoustic source has a longitudinal axis and sound emitting surfaces adapted to be put into sound emitting movements towards and away from each other by use of a drive u... | 06/20/2000 |
| 5949741 | Dual-section push-pull underwater projector The present invention relates to an underwater acoustic projector compris a housing formed from a rigid material, a fixed plate secured to the housing, a first annular electrostrictive ring and a second annular electrostrictive ring positioned on one sid... | 09/07/1999 |
| 5926439 | Flextensional dual-section push-pull underwater projector The present invention relates to an underwater acoustic projector compris a housing formed from a rigid material, a fixed plate secured to the housing, first and second annular electrostrictive rings positioned on one side of the fixed plate, and third a... | 07/20/1999 |
| 5856956 | Piezoelectric acoustic transducer The piezoelectric-acoustic transducer of the present invention has a hollow case provided with a sound hole. A piezoelectric actuator is disposed inside this case that has one end fixed to the case and that bends in the direction of the thickness of the c... | 01/05/1999 |
| 5852589 | Low cost composite transducer A composite sensor includes at least one layer comprising a piezoelectric material such as a molecularly poled polymer material or a ceramic material having disposed therebetween a material which enhances the piezoelectric properties of the piezoelectric ... | 12/22/1998 |
| 4999819 | Transformed stress direction acoustic transducer This invention describes an acoustic transducer assembly wherein an extremely high figure of merit (dh gh) is obtained as a result of converting incoming acoustic axial stress into radial extensional stress thereby multiplying its ef... | 03/12/1991 |
| 4709359 | End weighted reed sound transducer A cylindrical shell enclosure has mounted interiorly thereof in cantilever manner four upstanding laminated planar flexible resilient electroacoustic transducer reeds. A separate inertia weight is affixed to the top edge of each reed. An acoustic wave imp... | 11/24/1987 |
| 4547870 | Velocity hydrophone A directional velocity hydrophone is provided which does not appreciably disturb the particular movement of the fluid in which it is plunged and which comprises bending blades disposed in a ring and embedded in an inertial mass, which deliver an electric ... | 10/15/1985 |
| 4471475 | Single element cantilever mounted shear wave transducer A single element cantilever mounted shear wave transducer which takes advantage of the transverse vibration of a piezoceramic bimorph element mounted as a cantilever on a heavy slug. A gasket material between the slug and an inner holding tube assists in ... | 09/11/1984 |
| 4326155 | Shockwave probe Probe method and means are disclosed for guiding and positioning a robot-actuated tool, such as a gripper or a welding head, through at least one transceiver for generating and sensing focused shockwaves, the probe being associated with the tool for relat... | 04/20/1982 |
| 4013992 | Diver's piezoelectric microphone with integral AGC preamplifier An improved microphone assembly for use in a diver's mask or helmet and wh is characterized by a substantially flat frequency response at pressures from 1 to 30 or more atmospheres of breathing gas. A silicone rubber coated piezoelectric diaphragm is mou... | 03/22/1977 |
