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 |
| 7141912 | Piezoelectric/electrostrictive device and method of producing the same A piezoelectric/electrostrictive device includes a base 11 having a pair of movable parts 11a, 11b opposing each other and a connecting part 11c that connects movable parts 11a, 11b with ea... | 11/28/2006 |
| 6933658 | Method of manufacturing a piezoelectric/electrostrictive device A piezoelectric/electrostrictive (P/E) device includes a pair of mutually opposing metal thin plate sections, a movable section, and a fixation section for supporting the thin plate sections and the movable section. One or more piezoelectric/electrostrictive element... | 08/23/2005 |
| 6873234 | Electromagnetic actuator mounting structure An improved electromagnetic actuator having a coil (10) on which a current is impressed, a magnet (20) that forms a magnetic circuit across a magnetic gap (G) with a magnet yoke (21), and having a diaphragm (11) that vibrates when a high-... | 03/29/2005 |
| 6867690 | Active magnetostrictive sensor for automotive horn or occupant weight sensor An improved force-measurement system utilizes active magnetostrictive sensors for generating a signal representative of a force, such as the weight of a person or thing on a seat within a motor vehicle, or the force applied to the horn sensor switch on a vehicle ste... | 03/15/2005 |
| 6819227 | Acoustic signal generator, and method for generating an acoustic signal An acoustic signal generator, and a method for generating an acoustic signal are described. The acoustic signal generator has a membrane that can oscillate, a deflection sensor for detecting any deflection of the membrane, an exciter configuration that is coupled to... | 11/16/2004 |
| 6593847 | Planar acoustic converting apparatus This invention provides a planar acoustic converting apparatus including a support having a flat plate portion, a diaphragm which has an insulating base film having a liquid crystalline polymer film and being opposed to the flat plate portion of the suppo... | 07/15/2003 |
| 6492899 | Electromagnetic converter having superior anti-shock property An electromagnetic converter in which a mobile magnetic pole body supported by a thin spring is driven by an exciting coil. A restricting member limits movement of the spring so the spring is not deformed beyond a stress limit when the spring receives an ... | 12/10/2002 |
| 6380847 | Control circuit for a vibrating membrane The present invention relates to a control circuit of a vibrating membrane excited by a solenoid in series with a d.c. supply and a controlled switch. A capacitor is disposed across a series circuit including the solenoid and the switch associated with op... | 04/30/2002 |
| 6188313 | Device for generating sound A device for regenerating powerful acoustic pressure comprises at least an arrangement for generating sound while utilizing the flextensional technique, i.e. having at least one surface element (2), the opposite ends (4, 5) of which are arranged to be inf... | 02/13/2001 |
| 5867090 | Diaphragm buzzer Disclosed is a diaphragm buzzer including a lower cover and an upper cover. A sheet buzz element having a centered diaphragm is disposed inside the lower and the upper cover and is protectively sandwiched between a press plate and a plastic washer before ... | 02/02/1999 |
| 4700177 | Sound generating apparatus with sealed air chamber between two sounding plates A sound generating apparatus using piezoelectric elements includes first and second sounding plates arrayed in parallel with each other. The first and second sounding plates respectively include first and second diaphragms, and first and second thin plate... | 10/13/1987 |
| 4445113 | Small type acoustic device A small acoustic device is provided with a housing, a first electrically actuated vibrating plate and a second vibrating plate. A support member cooperates with the housing for mounting the periphery of the second vibrating plate to the housing to define ... | 04/24/1984 |
| 4159472 | Electronic buzzer A miniature electronic buzzer for an electronic watch has two vibrating plates with a sealed space between them forming an air spring. One of the vibrating plates carries an amarature which is acted upon by an electromagnetic to vibrate said plate. Vibrat... | 06/26/1979 |
