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    Key actuation systems for keyboard instruments
    1.
    发明申请
    Key actuation systems for keyboard instruments 失效

    公开(公告)号：US20050188810A1

    公开(公告)日：2005-09-01

    申请号：US11106301

    申请日：2005-04-14

    Applicant: David Meisel

    Inventor： David Meisel

    IPC: G10C3/12 ,  G10C5/00 ,  G10F1/02 ,  G10F5/00 ,  G10G3/04 ,  G10H1/055 ,  G10H1/34

    CPC classification number: G10H1/344 ,  G10C3/12 ,  G10C5/00 ,  G10F1/02 ,  G10F5/00 ,  G10G3/04 ,  G10H1/0555 ,  G10H2220/305

    Abstract: A key actuation system that is designed for use with a keyboard instrument of the type having multiple keys. Each key is pivotally supported and has a front end that is depressed by a player to play a note. The actuation system includes multiple actuators that are operable to move at least some of the keys. The actuators together include a block of ferromagnetic material with a surface with multiple bores defined in the surface. Each of the bores has a diameter. A winding is positioned in each of the bores. Each of the windings has a hole. A piston is provided at least partially in each of the holes, with each piston being in mechanical communication with one of the keys such that movement of the piston causes movement of the key. Each piston has a width. A ferromagnetic flux plate with multiple openings is positioned on the surface of the block of ferromagnetic material with the openings aligned with the bores. The openings each have a width that is less than the diameter of the bores, such that the flux plate partially closes off the upper end of each bore. When the windings are energized, the corresponding piston moves, thereby moving one of the keys.

    Key actuation systems for keyboard instruments
    2.
    发明申请
    Key actuation systems for keyboard instruments 失效
    键盘乐器的主要驱动系统

    公开(公告)号：US20010017075A1

    公开(公告)日：2001-08-30

    申请号：US09772736

    申请日：2001-01-30

    Inventor： David Meisel

    IPC: G10C003/00

    CPC classification number: G10C3/12 ,  G10C5/00 ,  G10F1/02 ,  G10F5/00 ,  G10G3/04 ,  G10H1/0555 ,  G10H1/344 ,  G10H2220/305

    Abstract: The key actuation system is designed for use with a keyboard instrument of the type having multiple keys. Each of the keys has an upper and lower surface and is pivotally supported above a key bed. A front end of a key may be depressed by a player to play a note. The key bed extends under and is spaced from the lower surface of the key. The actuation system includes an underlever in the space between the lower surface of the key and the key bed, and between the front end of the key in the pivotal support. The underlever has one end that is supported in a stationary position relative to the key bed and another end that is movable towards and away from the key bed. The movable end of the underlever is in mechanical communication with the key such that movement of the movable end of the underlever towards the key bed causes the key to move as if depressed by a player. An actuator is in mechanical communication with the underlever and operable to move the second end of the underlever towards the key bed.

    Abstract translation: 钥匙致动系统设计用于具有多个键的键盘乐器。 每个键具有上表面和下表面，并且枢转地支撑在键床上方。 钥匙的前端可能被玩家压下来播放音符。 钥匙床在键的下表面下方延伸并与钥匙的下表面隔开。 致动系统包括在钥匙的下表面和钥匙床之间的空间中以及在枢转支撑件中的钥匙的前端之间的底部。 底部有一端支撑在相对于钥匙床的固定位置，另一端可向着和远离钥匙床移动。 底部的可移动端与钥匙机械地连通，使得底部的可移动端朝向钥匙床的移动使得钥匙像玩家按压一样移动。 致动器与底部机械连接，并且可操作以使底部的第二端朝向键床移动。

    Method for mounting a solenoid above a string of stringed instrument
    6.
    发明授权
    Method for mounting a solenoid above a string of stringed instrument 有权

    公开(公告)号：US09865238B2

    公开(公告)日：2018-01-09

    申请号：US15491838

    申请日：2017-04-19

    Applicant: Vladimir A. Demin

    Inventor： Vladimir A. Demin

    IPC: G10F1/20 ,  G10F5/00

    CPC classification number: G10F1/20 ,  G10D3/00 ,  G10F5/00

    Abstract: This invention relates to musical instruments. Its use for mounting a solenoid above a string of stringed instrument for pressing this string to a specific fret of finger-board allows to simplify that mounting and ensure the absence of the knock at a moment of actuating the solenoid. The method is implemented in a stringed instrument bearing, above a finger-board thereof, a common plate having through-holes under each solenoid comprising a coil, within which coil a plunger adapted for axial movement being disposed, the plunger tapering to an output stud thereof for limiting a working travel of the plunger with a stopper ring displaced at a coil edge facing the string, the output stud having thickening at an end with elastic washers at both the side facing the string and reverse side. The method includes steps of: securing the solenoid at a separate plate; disposing the separate plate above the common plate so that the thickening of the output stud permeates the respective through-hole; fixing the separate plate above the common plate, using adjusting screws with elastic spacers put thereupon between the separate plate and common plate, until the string being pressed with the stud on supplying a working current to the solenoid coil; shifting the separate plate using the adjusting screws in such a location that the pressure of the string occurs, on supplying the working current to the solenoid coil, without a knock arisen from an impact made by the plunger taper with the stopper ring.

    Method for Mounting a Solenoid Above a String of Stringed Instrument
    7.
    发明申请
    Method for Mounting a Solenoid Above a String of Stringed Instrument 审中-公开

    公开(公告)号：US20170221461A1

    公开(公告)日：2017-08-03

    申请号：US15491838

    申请日：2017-04-19

    Applicant: Vladimir A. DEMIN

    Inventor： Vladimir A. DEMIN

    IPC: G10F1/20 ,  G10F5/00

    CPC classification number: G10F1/20 ,  G10D3/00 ,  G10F5/00

    Abstract: This invention relates to musical instruments. Its use for mounting a solenoid above a string of stringed instrument for pressing this string to a specific fret of finger-board allows to simplify that mounting and ensure the absence of the knock at a moment of actuating the solenoid. The method is implemented in a stringed instrument bearing, above a finger-board thereof, a common plate having through-holes under each solenoid comprising a coil, within which coil a plunger adapted for axial movement being disposed, the plunger tapering to an output stud thereof for limiting a working travel of the plunger with a stopper ring displaced at a coil edge facing the string, the output stud having thickening at an end with elastic washers at both the side facing the string and reverse side. The method includes steps of: securing the solenoid at a separate plate; disposing the separate plate above the common plate so that the thickening of the output stud permeates the respective through-hole; fixing the separate plate above the common plate, using adjusting screws with elastic spacers put thereupon between the separate plate and common plate, until the string being pressed with the stud on supplying a working current to the solenoid coil; shifting the separate plate using the adjusting screws in such a location that the pressure of the string occurs, on supplying the working current to the solenoid coil, without a knock arisen from an impact made by the plunger taper with the stopper ring.

    Addressable pneumatic valve system
    10.
    发明授权
    Addressable pneumatic valve system 失效
    可寻址气动阀门系统

    公开(公告)号：US07247778B2

    公开(公告)日：2007-07-24

    申请号：US10930341

    申请日：2004-08-30

    Applicant: Spencer Chase ,  Eugene Peter Gerety

    Inventor： Spencer Chase ,  Eugene Peter Gerety

    IPC: F16K15/02

    CPC classification number: G10F5/00 ,  Y10T137/87249

    Abstract: An addressable valve system is described wherein a plurality of valves are embedded into a single, compact valve block. Each valve comprises a piston moving in a bore in the block. A magnet embedded in the piston is positioned within a coil. When energized, the coil attracts the magnet and the plunger upwards away from a valve seat. Magnetic shields disposed between the pistons provide magnetic isolation between the pistons and simultaneously apply a closing force to the pistons by drawing the magnets downward towards the valve seat. When energized, the coils overwhelm the closing force and open the valves. Electronics for the valve block and the coils are provided on a circuit board overlying the pistons and bores. The electronics provide addressability of the valves and automatically generate “pick” and “hold” timing whereby the initial motivating force (voltage) applied to the current is higher to get the valves moving quickly when valve is first commanded to open. After a brief period of time, the coil voltage is lowered to a level that provided a lower maintaining force to keep the valve open.

    Abstract translation: 描述了可寻址阀系统，其中将多个阀嵌入到单个紧凑的阀块中。 每个阀包括在块中的孔中移动的活塞。 嵌入在活塞中的磁体定位在线圈内。 当通电时，线圈将磁体和柱塞向上吸引离开阀座。 设置在活塞之间的磁屏蔽件提供活塞之间的磁隔离，同时通过将磁体向下拉向阀座而向活塞施加闭合力。 通电时，线圈会压倒关闭力并打开阀门。 用于阀块和线圈的电子设置在覆盖活塞和孔的电路板上。 电子装置提供阀的寻址能力并自动产生“拾取”和“保持”定时，由此施加到电流的初始激励力（电压）更高，以在阀首次被命令打开时使阀快速移动。 短时间后，线圈电压降低到提供较低维持力的水平以保持阀门打开。

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