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公开(公告)号：US20080307942A1
公开(公告)日：2008-12-18
申请号：US11762990
申请日：2007-06-14
申请人： Bruce Clark , Kevin Burke , Kurk Burgett
发明人： Bruce Clark , Kevin Burke , Kurk Burgett
IPC分类号： G10C3/22
摘要： Composite or plastic molded articles used in a grand piano piano action. The articles make up a piano action with less dynamic mass which is, thus, more responsive. In addition, the new action provides the extremely valuable collateral benefits of increased efficiency of manufacture and maintenance. The invention also provides the capability to achieve true half stroke design in both the sharp and white keys at the same time. Additionally, the application discloses a universal composite grand piano piano action that is capable of being installed into any brand of grand piano.
摘要翻译： 用于钢琴钢琴演奏的复合或塑料模制品。 这些文章组成了一个较少动态质量的钢琴动作，因此反应灵敏度更高。 此外，新的行动提供了提高制造和维护效率的极其有价值的附带好处。 本发明还提供了在锐利和白色键同时实现真正的半冲程设计的能力。 此外，该应用程序公开了能够安装在任何品牌的大钢琴中的通用复合钢琴演奏。
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公开(公告)号：US5239907A
公开(公告)日：1993-08-31
申请号：US706580
申请日：1991-05-28
申请人： Nobuo Sugiyama , Katuo Ito , Yasutoshi Kaneko
发明人： Nobuo Sugiyama , Katuo Ito , Yasutoshi Kaneko
摘要： A muting device for a piano includes a capstan screw, a support rail, a support, a jack, a shank rail, a hammer shank, a hammer and at least one string with respect to each key. Each key is divided into a back portion and a front portion with respect to the rotation axis. This front portion of the key is depressed by a performer, while the back portion of the key is inserted into a key driving mechanism of the grand piano. In addition, a transmitting member (e.g., another capstan screw) transmits force from the key to the hammer. The transmitting member is inserted between an upper surface of the key and a lower surface of the support. The transmitting member contacts the upper surface of the key between the capstan screw and a rotation center of the key, and it also contacts with the lower surface of the support between a position at which the capstan screw comes contacts the support and a position at which the jack is connected to the support. Using two capstan screws, it is possible to simulate the double action of the key of a grand piano. In non-key-depression state, a string striking stroke between the hammer and string is reduced to mute a piano sound.
摘要翻译： 用于钢琴的静音装置包括主导螺丝，支撑轨，支架，千斤顶，柄杆，锤柄，锤以及相对于每个键的至少一个弦。 每个键分别相对于旋转轴分成后部和前部。 钥匙的该前部被执行者压下，而钥匙的后部插入到大钢琴的键驱动机构中。 此外，传递构件（例如，另一个绞盘螺钉）将力从键传递到锤。 传递构件插入在键的上表面和支撑件的下表面之间。 传动构件在绞盘螺杆和键的旋转中心之间接触钥匙的上表面，并且它也在主导轴螺钉与支撑件接触的位置与支撑件的下表面接触，在该位置处， 千斤顶连接到支架。 使用两根绞盘螺丝，可以模拟一架大钢琴钥匙的双重动作。 在非键按压状态下，琴弦和琴弦之间的弦线冲击力减小，使钢琴声音静音。
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公开(公告)号：US4953433A
公开(公告)日：1990-09-04
申请号：US421374
申请日：1989-10-16
IPC分类号： G10C3/22
CPC分类号： G10C3/22
摘要： The subject grand piano action, in common with all piano actions, comprises driving apparatus comprising the key and wippen levers, drive apparatus comprising the hammer assembly and apparatus interconnecting the two and providing for disengagement and reengagement of the driven with the driving apparatus. In the subject action the interconnecting apparatus comprises the jack, pivoted to the free end of the wippen lever and a repetition spring pivoted at both ends, one end at the free end of the jack, the other on the hammer shank. When the key is played and the free end of the wippen lever rises, a cam on the side of the jack facing away from the wippen lever engages a button mounted on the hammer rail and this engagement forces the end of the jack along a hard felt cam on the hammer knuckle. The cams on the jack and hammer knuckle are contoured such that the jack end and the jack actuation button remain in contact or close proximity to their respective cams throughout engagement and dis-engagement of the jack. There are two mechanical adjustments and one spring adjustment in the action. This configuration enables a simpler, quieter, easier to adjust action which stays in adjustment for longer periods of playing time and with no sacrifice in performance.
摘要翻译： 与所有钢琴动作相同的主题大钢琴动作包括包括键和摇杆的驱动装置，包括锤组件的驱动装置和将两者相互连接并提供驱动装置的分离和重新接合的装置。 在主体动作中，互连装置包括枢转到摇摆杆的自由端的千斤顶和在两端枢转的重复弹簧，一端在千斤顶的自由端，另一端在锤柄上。 当琴键被弹奏并且摇杆杠杆的自由端上升时，千斤顶侧面的凸轮面向离开摇杆杆的方向接合安装在锤轨上的按钮，并且这种接合迫使千斤顶的端部沿着硬毡 凸轮在锤指关节。 千斤顶和锤指关节上的凸轮具有轮廓，使得千斤顶端和插座致动按钮在千斤顶的接合和脱开接合期间保持接触或靠近它们各自的凸轮。 在动作中有两个机械调整和一个弹簧调整。 该配置使得能够更简单，更安静，更容易地调节动作，其保持在更长的播放时间的调整中，并且不牺牲性能。
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公开(公告)号：US4856402A
公开(公告)日：1989-08-15
申请号：US293989
申请日：1989-01-06
申请人： James R. Alexander
发明人： James R. Alexander
IPC分类号： G10C3/22
CPC分类号： G10C3/22
摘要： An improvement for grand piano actions reduces unwanted friction between the repetition lever and the hammer shank. The conventional grand piano knuckle is replaced by a lever disposed generally parallel to the repetition lever and pivotally secured thereto at one end. An adjustable spring provides a force biasing the lever away from the repetition lever. A travel limit adjusts the maximum pivotal excursion of the lever relative to the repetition lever. At the opposite end of the lever, a centrally pivoted platform structure is pivotally secured. The structure includes a surface which engages the hammer shank and at least one brake surface which engages the repetition lever.
摘要翻译： 对于大钢琴动作的改进减少了重复杆和锤柄之间的不必要的摩擦。 传统的大钢琴指关节被大体上平行于重复杆设置的杠杆代替，并且在一端枢转地固定在其上。 可调弹簧提供将杠杆偏离重复杆的力。 行程极限调节杠杆相对于重复杆的最大枢转偏移。 在杠杆的相对端，中心枢转的平台结构被枢转地固定。 该结构包括接合锤柄的表面和接合重复杆的至少一个制动表面。
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公开(公告)号：US3559526A
公开(公告)日：1971-02-02
申请号：US3559526D
申请日：1968-09-20
申请人： RAFFALI ANDRE
发明人： RAFFALI ANDRE
CPC分类号： G10C3/22
摘要： In application of the invention to a keyboard musical instrument such as a piano, the key is guided by a deformable parallelogram linkage, so that during its actuated displacement, the key remains parallel to its original orientation; between each key and the associated hammer is interposed a transmission which, when the key is depressed, gives the hammer an accelerated movement with respect to the movement of depression of the said key; the release of the transmission for the free return of the hammer after striking, is effected after the full depression of the key during the sole inertia movement of the hammer towards the wire; the effect of the soft pedal is obtained by continuous modification of the active length of an intermediate lever of the transmission.
摘要翻译： 在将本发明应用于诸如钢琴的键盘乐器时，钥匙由可变形平行四边形连杆引导，使得在其致动位移期间，键保持平行于其原始方向; 在每个键和相关联的锤之间插入传动装置，当按键被按压时，相对于所述键的凹陷的移动使锤子加速运动; 在敲击锤的唯一惯性运动之后完全按压钥匙后，释放用于敲击后锤的自由返回的传动装置; 通过连续改变变速器的中间杆的有效长度来获得软踏板的效果。
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公开(公告)号：US3554071A
公开(公告)日：1971-01-12
申请号：US3554071D
申请日：1968-07-05
申请人： WURLITZER CO
CPC分类号： G10C3/22
摘要： The butt flange of a piano action is molded of a plastic material, a preferred example being polypropylene. In one embodiment of the invention the butt flange is provided with a relatively thin section so that the pivot pin for the hammer butt is capable of translatory movement. A spring holds the butt flange against such flexing, and precludes such translatory movement of the pivot unless the key is struck with greater than normal force. In another embodiment of the invention the pivot is eliminated and the hammer butt, and preferably also the shank, is made integral with the butt flange, the section between the butt flange and the hammer butt being thin to permit flexing and movement of the hammer toward and away from the sounding element.
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公开(公告)号：US2866371A
公开(公告)日：1958-12-30
申请号：US58164356
申请日：1956-04-30
CPC分类号： F16B5/12 , F16B35/048 , F16B37/065 , G10C3/22
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公开(公告)号：US2469668A
公开(公告)日：1949-05-10
申请号：US67069346
申请日：1946-05-18
申请人： SHILL SIDNEY C
发明人： SHILL SIDNEY C
IPC分类号： G10C3/22
CPC分类号： G10C3/225
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公开(公告)号：US2442182A
公开(公告)日：1948-05-25
申请号：US60052245
申请日：1945-06-20
申请人： WURLITZER CO
发明人： SOCIN FRANCIS C
IPC分类号： G10C3/22
CPC分类号： G10C3/22
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