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 |
| 7256342 | Sound pickup device for percussion instrument A sound pickup device, which is arranged in proximity to a percussion instrument (e.g., a bass drum), comprises a diaphragm stretched under tension over an opening of a shell having a cylindrical shape, and an electroacoustic transducer arranged inside of the shell.... | 08/14/2007 |
| 4429607 | Light beam musical instrument A musical instrument is disclosed in which light beams striking a detector produce various tones and the loudness of the sounds produced is dependent upon the intensity of the light beam which can be changed by interrupting the beam or reflecting the ligh... | 02/07/1984 |
| 4321851 | Electronic musical instrument An electronic musical instrument comprises a power source switch, a keyboard including a plurality of key switches corresponding to a plurality of keys, a signal generator for generating a musical tone signal corresponding to a note of a depressed key, an... | 03/30/1982 |
| 4282791 | Keyer system for an electronic organ A keying system provides selectable decay times for individual frequency components of a tone to be generated by an electronic organ having a top octave generator producing a multiplicity of rectangular wave signals, and a plurality of associated divider ... | 08/11/1981 |
| 4278001 | Selective keyer biasing to enhance percussion effect A keying system provides selectable decay times for individual components of a tone to be generated by an electronic organ having a top octave generator producing a multiplicity of rectangular wave signals, and a plurality of associated divider circuits. ... | 07/14/1981 |
| 4228716 | Device and method for optical tone generation An optical tone generator comprises sensing means responsive to light of different respective colors for selectively producing respective output signals corresponding to such respective colors, and a tone generator responsive to the sensing means for emit... | 10/21/1980 |
| 4216691 | Octave assignment system for electronic musical instrument An electronic organ uses several top octave synthesizer circuits for producing the various tones used in the organ. Each of the top octave synthesizers is capable of producing any tone which can be produced by the organ. As a consequence, the outputs of e... | 08/12/1980 |
| 4205581 | Keyer system An organ keyer system, especially a keyer system operated by logic level signals, such as occur in multiplexing. The keyer system herein described is especially intended for manufacture by large scale integration techniques, and is designed to provide for the ... | 06/03/1980 |
| 4176575 | Improved touch operated capacitance switch circuit for an electronic organ Disclosed is a touch operated capacitance switch which may be used in connection with a digital arpeggio system for an electronic organ that through the use of digital techniques permits arpeggios, note sequences as well as strum, multi, organ, and normal... | 12/04/1979 |
| 4173916 | Tone generator system for an electronic organ A tone generator system for an electronic organ which is capable of being fabricated into an LSI structure and receives a saw-tooth wave or staircase wave as an input thereto comprises a frequency divider for the saw-tooth wave or staircase wave including... | 11/13/1979 |
| 4111092 | Electronic musical instrument In an electronic musical instrument a key touch signal is generated in response to the operation of a key, and a plurality of control signals having different waveforms are produced from the key touch signal. Different control signals are used for independentl... | 09/05/1978 |
| 4077293 | Sample hold arrangement for a key signal in an electronic musical instrument A sample hold arrangement for a key signal in an electronic musical instrument in which a keyboard circuit generates a voltage corresponding to a depressed key. The keyboard circuit is connected at its output terminal to an input terminal of a comparator.... | 03/07/1978 |
| 4052923 | Electrical control devices An electrical control device comprises a base member, and an elongate support member mounted to be movable transversely of its length with respect to the base member. A tension spring biases the elongate member against movement in one direction transverse... | 10/11/1977 |
