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| Number | Title | Issue Date |
| 8093480 | Keyboard device for electronic keyboard instrument A keyboard device for an electronic keyboard instrument, which has a simple construction and can be manufactured at relatively low costs, and is capable of providing let-off feeling closely analogous to the let-off feeling of an acoustic piano. The keyboard device c... | 01/10/2012 |
| 7947887 | Touch control apparatus of electronic musical instrument In order to detect a state of a key 30, a differential acceleration sensor 38 is provided in addition to a common position sensor 35 and a velocity sensor 36. A reaction force applied by a solenoid unit 20 is determined on the basi... | 05/24/2011 |
| 7858864 | Key actuating apparatus In order to improve a touch of a key of a keyboard musical instrument by using a key actuating apparatus which actuates the key supported so as to be rotationally movable with regard to a frame of the keyboard musical apparatus, a key actuating apparatus (1) ... | 12/28/2010 |
| 7678981 | Keyboard structure of electronic keyboard instrument A keyboard structure capable of suppressing a depth dimension of a keyboard instrument and rearward displacements of key main bodies to thereby prevent plastic deformation of hinges. White and black key main bodies are each disposed for pivotal motion around a commo... | 03/16/2010 |
| 7402741 | Keyboard apparatus A keyboard apparatus which is capable of imparting a natural key depression feeling with a definite and positive load change, with a simplified construction. A key touch feeling-imparting mechanism imparts a predetermined key touch feeling to a key when it is depres... | 07/22/2008 |
| 7355109 | Separate automatic player driving keys and pedals of keyboard musical instrument A separate automatic player is independent of a piano, and stands in front of the piano for an automatic playing; the separate automatic player includes a key driver unit, a pedal driver unit and a framework on which the key driver unit and pedal driver unit is carr... | 04/08/2008 |
| 7193147 | String-striking device for piano A keystroke device of a piano capable of increasing an area for the adjustment of static loads applied to the tips of keys on the playing sides, wherein a first weight lever (31) rotating according to the movement of the keys (21) is installed above th... | 03/20/2007 |
| 7166795 | Method and apparatus for simulating a mechanical keyboard action in an electronic keyboard An electronic keyboard simulates the keyboard action of one or more acoustic pianos and/or organs. Sensors associated with each key capture the force exerted on the key, the speed of the key and the position of the key to compute an amount of force to apply in feedb... | 01/23/2007 |
| 7129404 | Keyboard musical instrument having keys regulated with stable key balance pieces and process for fabricating keys A key is an indispensable component parts of an acoustic or electronic keyboard musical instrument, and key balancers are embedded in the key for varying the moment exerted on the key; the key balancers are fastened to the key by means of an anchor so that the key b... | 10/31/2006 |
| 7111533 | Multiple bit screwdriver A multiple bit screwdriver comprising a plurality of tool bits, an elongate member defining an axial passage adapted to receive said bits therein positioned tip to end so that the foremost bit operably extends from the passage and is rotatable with the elongate memb... | 09/26/2006 |
| 7071404 | Laser activated synthesizer system A laser activated synthesizer system for efficiently translating finger positions on a surface into sounds. The laser activated synthesizer system includes a housing member which encloses a plurality of lasers near an upper surface, each laser aligned with a piano l... | 07/04/2006 |
| 7067730 | Keyboard musical instrument having keys regulated with stable key balance pieces A key is an indispensable component parts of an acoustic or electronic keyboard musical instrument, and key balancers are embedded in the key for varying the moment exerted on the key; the key balancers are fastened to the key by means of an anchor so that the key b... | 06/27/2006 |
| 6995308 | Electric keyboard assembly and method of manufacturing weight members provided in keyboard assembly There is provided an electric keyboard assembly having a construction which is capable of reducing a height of a keyboard and at the same time facilitating key scaling to key-touch response while maintaining the degree of freedom in designing the keyboard. A key is ... | 02/07/2006 |
| 6815603 | Unbreakable and economical optical sensor array and keyboard musical instrument using the same An optical sensor array includes plural sensor heads arranged on a supporting plate at intervals for monitoring moving objects such as black/white keys of a composite keyboard musical instrument; the sensor head has resiliently deformable arms on both side portions ... | 11/09/2004 |
| 6703552 | Continuous music keyboard An apparatus and method for continuous keyboard system. The Continuous Music Keyboard resembles a traditional keyboard in that it is approximately the same size and is played with ten fingers. It also resembles a fretless string instrument in that it has ... | 03/09/2004 |
| 6660920 | Music operator with tension string for sensing action input An operation apparatus is responsive to a physical action for inputting a control parameter of a musical sound into an electronic musical instrument. The operation apparatus is provided with a plurality of movable members individually responsive to the ph... | 12/09/2003 |
| 6531651 | Key for musical instrument A key is provided for permitting simple attachment of a weight and easy adjustment of a touch load, while using an alternative material for substitution for lead as a material for the weight, to thereby reduce the manufacturing cost. A swingable key body ... | 03/11/2003 |
| 6380469 | Keyboard musical instrument equipped with key actuators accurately controlling key motion A keyboard musical instrument is equipped with solenoid-operated key actuators for guiding a player in fingering on the keyboard, and the solenoid-operated key actuators stop the keys at terminative positions on the way to the end positions, wherein key s... | 04/30/2002 |
| 6297437 | Keyboard musical instrument and information processing system incorporated therein for discriminating different kinds of key motion A keyboard musical instrument includes an acoustic piano for generating acoustic tones, a silent system for rebounding the hammer assemblies between the escape from the key action mechanisms and strikes against strings and automatic playing system for act... | 10/02/2001 |
| 6218601 | In-line keyboard An in-line keyboard provides a large number of music producing actuators in a small space. Each actuator corresponds to a note on a musical scale. The actuators are arranged in perpendicular columns and rows. The actuators of each column are played by a s... | 04/17/2001 |
| 6153819 | Note release control method for solenoid actuated piano actions A method for eliminating or reducing noise created by the action mechanisms of piano keys during its return stroke after striking a string, by regulating the amount of time for the mechanism to return to rest. The method comprises the steps of sequentiall... | 11/28/2000 |
| 6147289 | Keyboard assembly and method of manufacturing it A keyboard assembly for a keyboard instrument such as an electronic piano is constructed using a key, a first moving member, a second moving member and a key-depression switch. Herein, the key is supported by a keyboard frame to have a capability of rotat... | 11/14/2000 |
| 6060653 | Method and apparatus for adjusting keys of a musical keyboard instrument from a weighted action to synthesizer feel A musical keyboard instrument (EM1) keyboard which has a plurality of keys, a common pivot point for said keys and a spring biases each key to a uniform position, each key having an associated weight member and a common fulcrum point for each associated w... | 05/09/2000 |
| 5977466 | Keyboard musical instrument equipped with small simple economical key touch generator An electronic keyboard musical instrument includes a plurality of keys turnable between a rest position and an end position, an electronic sound generating system responsive to the motion of the key so as to generate an electronic sound and a key touch ge... | 11/02/1999 |
| 5895875 | Keyboard assembly for electronic musical instrument A keyboard assembly for an electronic musical instrument comprises at least a plurality of keys, a key support member and a plurality of key-return springs. The key support member rotatably supports the keys; and the key-return spring is provided between ... | 04/20/1999 |
| 5866831 | Simulated piano action apparatus for electronic keyboard An electronic keyboard key apparatus includes a longitudinally extending key pivotally mounted on a supporting base and a simulated hammer assembly including a simulated hammer mounted on a hammer shank that is independently pivotally mounted with respect... | 02/02/1999 |
| 5796023 | Keyboard apparatus with white keys and black keys having action member driving sections at substantially the same location A keyboard apparatus has a first frame (support member), and a keyboard including a plurality of white keys and black keys, each of the keys having a fulcrum and movably about the fulcrum with respect to the support member. Each of the black keys has an e... | 08/18/1998 |
| 5696340 | Keyboards for electronic pianos Improvements to keyboards for electronic pianos and the like, wherein a support, preferably made of sheet metal, with a U-shaped section and a flat section and provided with a number of hammers equal to the number of keys, which hammers are made integral ... | 12/09/1997 |
| 5574241 | Keyboard apparatus with common stopper for key and hammer A keyboard apparatus is constructed on a frame having a plurality of support members. A plurality of keys are movably supported by the corresponding support members such that each key can be operated by a finger action to undergo a primary stroke movement... | 11/12/1996 |
| 5204486 | Keyboard device of an electronic keyboard instrument Disclosed is a keyboard device of an electronic keyboard instrument generating a sound upon actuation of a switch disposed on a main plate by a pushing operation of a keyboard; the device includes a touch element varying in position according to the opera... | 04/20/1993 |
| 5158003 | Keys for electronic musical instrument Keys for an electronic musical instrument which is capable of giving an after-touch effect is disclosed. If a key is pressed, the point contact rubber is also pressed to point-contact-operate the circuit board, and at the same time, the point contact pin ... | 10/27/1992 |
| 5129301 | Tracker touch apparatus utilizing magnetism for tactile feel A tracker touch apparatus used with a keyboard apparatus having a plurality of selectively depressed keys includes at least one strip magnet support by the apparatus in a position transversing over the tops of the keys. A metal plate is secured to the top... | 07/14/1992 |
| 5062342 | Piano action device for electronic keyboard musical instruments A piano action device for electronic keyboard musical instruments includes a key arranged on a keyboard chassis so as to be swingable up and down, a first hammer arm swung in response to the depression of the key, switch unit for indicating a start of gen... | 11/05/1991 |
| 5035168 | Balance pin assembly for a piano key A balance pin assembly for mounting a piano key includes a balance pin, a mounting insert, and a self-locking pin. The balance pin has a lower externally threaded base, an intermediate annular shoulder, and an upper elongated stem with a top torque regula... | 07/30/1991 |
| 4993305 | Manual with piano effect for use in electronic organs The actions of a manual with piano effect for use in electronic organs have keys which are pivotable about a first horizontal axis and carry rigid or elastic pushers abutting plate-like motion receiving portions on the first arms of discrete reaction leve... | 02/19/1991 |
| 4972753 | Electronic musical instrument An electronic musical instrument has plural keys each capable of designating different tone pitch and touch response. When any key is depressed by player, touch response information is generated in response to touch intensity or depressing pressure of the... | 11/27/1990 |
| 4899631 | Active touch keyboard A keyboard system for an electronic musical instrument of the keyboard type, such as a synthesizer, electronic piano, organ or controller keyboard. The keyboard includes an electromechanical key actuation and sensing element that in combination with elect... | 02/13/1990 |
| 4890533 | Key device for electronic keyboard musical instrument An improved key device for an electronic keyboard musical instrument of the type having a fulcrum and a chassis each mounted on a support, and having a key pivotably mounted on the fulcrum, is further provided with a rotor rotatably coupled to the chassis... | 01/02/1990 |
| 4860630 | Manual for electronic organs and the like A manual for an electronic organ wherein the depression of keys takes place against resistance similar to that encountered on depression of piano keys. Thus, each key of the manual at first offers a pronounced resistance and thereupon a greatly reduced re... | 08/29/1989 |
| 4856407 | Action mechanism for a keyboard of an electronic piano An action mechanism for a keyboard of an electronic piano which is capable of producing a touch that is nearly equal to that of an ordinary piano. The action mechanism comprises an action spring including a friction spring portion to produce a friction fo... | 08/15/1989 |
