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公开(公告)号：US20240112651A1
公开(公告)日：2024-04-04
申请号：US18473062
申请日：2023-09-22
发明人： Takuma MURAI
IPC分类号： G10C3/18
CPC分类号： G10C3/18
摘要： A hammer device for a keyboard instrument includes a plurality of hammers. Each hammer has a hammer body extending in a front-rear direction and having a front half thereof pivotally supported and a rear half thereof formed with a weight mounting portion. A first weight common in shape and size to the hammers is attached to one of left and right side surfaces of the weight mounting portion. A second weight is attached to the other of the left and right side surfaces of the weight mounting portion. The first weight includes a stopper contact portion which protrudes at least either more upward or more downward than the second weight, and is brought into contact with a stopper in accordance with pivotal movement of the hammer caused by depression of a key associated therewith.
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公开(公告)号：US11756513B1
公开(公告)日：2023-09-12
申请号：US17878224
申请日：2022-08-01
申请人： Kirk Burgett
发明人： Kirk Burgett
摘要： Elliptical silicone knuckle or roller for grand piano action with customized durometer reading is an elliptical cylinder shaped knuckle or roller for a grand piano hammer assembly with an elliptical cylinder shaped core that is made of silicone thermoset resin material, which can be molded or manufactured at any desired durometer reading of 10-100 units to yield a piano action and hammer assembly for a grand piano with the exact feel of escapement that is desired by any particular pianist. Escapement is the process whereby the jack stops driving the knuckle just before the hammer hits the strings where the hammer travels the last 1 to 2 mm to the strings on its own inertia and without any contact with the jack. Two embodiments of elliptical silicone knuckle or roller are presented: a wide embodiment and a narrow embodiment.
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公开(公告)号：US11545119B2
公开(公告)日：2023-01-03
申请号：US17155530
申请日：2021-01-22
申请人： YAMAHA CORPORATION
摘要： A rotation mechanism includes a shaft portion, a bearing portion, a protruding portion, and a stopper. The bearing portion configured to rotate with respect to a predetermined axis as a center of rotation and configured to slide relative to an outer periphery of the shaft portion. The protruding portion protrudes from the shaft portion. The stopper is integrally formed the bearing portion. The stopper faces the protruding portion. A length of the protruding portion in a direction in which the protruding portion protrudes is larger than a distance from the center of rotation to a sliding portion where the bearing portion slides relative to the outer periphery of the shaft portion.
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公开(公告)号：US11410635B1
公开(公告)日：2022-08-09
申请号：US17684097
申请日：2022-03-01
申请人： Vintage Vibe LLC
摘要： An adjustable action for an electric piano is provided with a keystick having an adjustable bottom capstan at an end thereof opposite the key, which is adjustable so that the rest position of the hammer of each such key may be independently adjusted, and an adjustable top capstan and hammer jack on the top of the keystick, which may be adjusted so that the stop-lock (depressed key) position of the hammer of each such key may be independently adjusted.
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公开(公告)号：US10380985B2
公开(公告)日：2019-08-13
申请号：US16033015
申请日：2018-07-11
发明人： Hirokazu Taniguchi , Toshiya Kuno
摘要： A keyboard device includes at least one key and an action mechanism corresponding to the at least one key. The action mechanism includes a transmitter which moves in response to key depression to the at least one key, a hammer member which operates, in response to movement of the transmitter, to apply a load to the depressed key, a first abutting part which is arranged on one of the hammer member and a member which the hammer member abuts, and an elastic part which is arranged on another of the hammer member and the member which the hammer member abuts. At least one part of the elastic part gets over the first abutting part in a process of deforming of the elastic part, thereby a let-off feeling is given to the depressed key.
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公开(公告)号：US09620090B2
公开(公告)日：2017-04-11
申请号：US14867275
申请日：2015-09-28
申请人： Steinway, Inc.
发明人： Richard Shepherd
CPC分类号： G10G3/04 , G10C3/18 , G10F1/02 , G10H1/14 , G10H1/34 , G10H1/344 , G10H2220/271 , G10H2220/305
摘要： A system, for determining the velocity of a hammer of a keyboard instrument, with a light transceiver and processing circuitry. The light transceiver being configured to transmit a light signal to a hammer to measure a hammer velocity, receive a reflected light signal from the hammer indicative of the velocity of the hammer and send an electrical signal to the processing circuitry, where the electrical signal is based on the reflected light signal from the hammer. The processing circuitry being configured to receive and process the electrical signal so that a time interval between the electrical signal passing through a first trigger point and a second trigger point and the velocity of the hammer can be determined.
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公开(公告)号：US08937235B2
公开(公告)日：2015-01-20
申请号：US13867073
申请日：2013-04-20
CPC分类号： G10C3/161
摘要： A vertical or upright piano action includes a key bed, a key frame, a wippen, a damper action, a hammer action, a repetition lever, a sustain mechanism, sostenuto mechanism, and an una chorda or action shift mechanism. Butt directly engages damper, improving response to professional standard. Touch resistance is unchanged by sustain mechanism.
摘要翻译： 垂直或直立的钢琴动作包括钥匙床，关键框架，摇摆，阻尼器动作，锤击动作，重复杆，维持机构，动作机构，和弦动作移动机构。 对接直接接合阻尼器，提高对专业标准的反应。 触电阻力通过维持机制不变。
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公开(公告)号：US08895822B2
公开(公告)日：2014-11-25
申请号：US13808160
申请日：2011-07-07
申请人： Yukimitsu Fujii
发明人： Yukimitsu Fujii
CPC分类号： G10C3/161
摘要： Disclosed is an action for an upright piano capable of expressing rich tone variation and improving the continuous press performance of the same key. In the action (1) for an upright piano, there are formed a guide member (67) fixed to a center rail (14) and continuing in the horizontal direction; and a member to be guided (73) sliding along the guide member (67). A hammer under rail (19) on which a hammer shank (45) abuts is affixed to a hammer rail (18), and butt flanges (41) are affixed to the member to be guided (73). The member to be guided (73) is connected to a pedal (77) via an upthrust bar (81) and a balance (79) such that the member to be guided (73) is slid to the right or left with the force of working the pedal (77) by the player.
摘要翻译： 公开了一种能够表现出丰富的色调变化并提高相同键的连续印刷性能的直立钢琴的动作。 在立式钢琴的动作（1）中，形成有固定在中心导轨上并在水平方向上连续的导向件（67） 以及被引导（73）沿着引导构件（67）滑动的构件。 在锤杆（45）邻接的轨道下方的锤子（19）固定到锤导轨（18）上，并且对接凸缘（41）固定到待引导构件（73）上。 要被引导的构件（73）经由上推杆（81）和平衡件（79）连接到踏板（77），使得被引导构件（73）以...的力向右或向左滑动 由玩家操作踏板（77）。
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公开(公告)号：US08558095B2
公开(公告)日：2013-10-15
申请号：US13041903
申请日：2011-03-07
IPC分类号： G10C3/18
摘要： A keyboard apparatus capable of being easily designed to have action units whose upper end positions are made low and whose efficiency of drive of whippens is increased. Each of keys of the keyboard apparatus has an upper front part, a bent part extending downward from a rear end of the upper front part, and a lower rear part extending rearward from a lower end of the bent part. An upper surface of a rear end portion of the lower rear part nearly horizontally extends at a height position lower than that of a key fulcrum. Action units are disposed above respective ones of rear end portions of the keys. A driven point of a whippen of each action unit is located at a position lower than the key fulcrum in a non-key-depression state.
摘要翻译： 一种键盘装置，其能够容易地设计成具有使其上端位置变低的动作单元，并且提高了动力的驱动效率。 键盘装置的每个键具有上前部，从上前部的后端向下延伸的弯曲部，以及从弯曲部的下端向后方延伸的下后部。 下后部的后端部的上表面在比键支点低的高度位置处几乎水平地延伸。 动作单元配置在按键的后端部的上方。 每个动作单元的摇动的驱动点位于比非键按压状态下的键支点低的位置。
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公开(公告)号：US08541671B1
公开(公告)日：2013-09-24
申请号：US13426583
申请日：2012-03-21
申请人： Kirk Burgett , Jamie Marks , Dana Mazzaglia
发明人： Kirk Burgett , Jamie Marks , Dana Mazzaglia
IPC分类号： G10C3/18
CPC分类号： G10C3/26
摘要： Lost motion compensation device is a mechanical device that rigidly and pivotally connects the rest rail of an upright piano to the front end of the whippen of an upright piano to cause the two member to rotate in unison as the rest rail is rotated by depressing and releasing the soft pedal on an upright piano.
摘要翻译： 迷失运动补偿装置是一种机械装置，其将立式钢琴的静止轨道刚性地和枢轴地连接到立式钢琴的摇臂的前端，以使得当构件通过按压和释放而使两个构件一起旋转 直立钢琴上的软踏板。
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