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公开(公告)号：US4348933A
公开(公告)日：1982-09-14
申请号：US195416
申请日：1980-10-09
IPC分类号： G10C3/06
CPC分类号： G10C3/06
摘要： A soundboard assembly for use in a piano, harpsicord or similar stringed musical instrument comprises a thin, laminated soundboard consisting of a center sheet of wood and two outer layers of composite material. The center wooden sheet has a substantially unidirectional grain and the two outer layers of composite material are made of unidirectional carbon fibers embedded in a resin matrix. A plurality of ribs, which may also be made as laminations of wood and layers of composite material, are secured to one face of the soundboard, and the ribs, grain of the wood, and direction of the carbon fibers are so related to one another and to the associated bridge as to produce a desirable reaction from the soundboard in response to string vibrations transmitted to it through the bridge.
摘要翻译： 用于钢琴，竖琴或类似弦乐器的音板组件包括由中心的木片和两层复合材料组成的薄的层叠的音板。 中心木片具有基本上单向的颗粒，并且复合材料的两个外层由嵌入在树脂基体中的单向碳纤维制成。 还可以将多个肋片制成木材和复合材料层的叠片，固定在声板的一个面上，并且木材的肋条，木纹和碳纤维的方向彼此相关 以及相关的桥梁，以响应于通过桥传递到其上的绳索振动，从声板产生期望的反应。
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公开(公告)号：US4304168A
公开(公告)日：1981-12-08
申请号：US77150
申请日：1979-09-19
申请人： Robert J. Mayerjak
发明人： Robert J. Mayerjak
CPC分类号： G10C3/04
摘要： A key bed for a piano or the like is comprised by a laminated structure having two outer layers of sheet steel and an intermediate layer of a wood product. The steel layers are bonded to the intermediate layer, and the intermediate layer is substantially thicker than the outer layers of steel to offset the outer layers from one another and thereby increase the stiffness of the key bed.
摘要翻译： 用于钢琴或类似物的钥匙床由具有两层钢板和木制品中间层的层压结构构成。 钢层结合到中间层，并且中间层基本上比钢的外层更厚以将外层彼此偏移，从而增加了键床的刚度。
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公开(公告)号：US5851150A
公开(公告)日：1998-12-22
申请号：US30806
申请日：1993-03-12
申请人： Robert J. Mayerjak
发明人： Robert J. Mayerjak
CPC分类号： F16D3/60
摘要： A flexible coupling comprised of one or more flex frames connected in series between end fittings has the legs of its flex frames so dimensioned as to provide the coupling with a uniform bending stiffness with respect to bending moments in planes at all angles to the rotational axis. This is achieved by having each flex frame itself be of uniform bending stiffness with the other coupling components designed so as to have substantially no influence on the coupling's bending characteristics, or by using in the coupling at least one "compensator" flex frame specifically dimensioned to have a non-uniform bending stiffness compensating the non-uniform bending stiffnesses of the other coupling components.
摘要翻译： 由一个或多个在端部配件之间串联连接的柔性框架组成的柔性联接器具有其柔性框架的腿部的尺寸，使其具有相对于旋转轴线在所有角度的平面中相对于弯矩的均匀弯曲刚度。 这是通过使每个柔性框架本身具有均匀的弯曲刚度来实现的，而另一个耦合部件被设计成对联接器的弯曲特性基本上没有影响，或者通过在联接器中使用至少一个“补偿器” 具有补偿其他耦合部件的不均匀弯曲刚度的不均匀的弯曲刚度。
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公开(公告)号：US4306836A
公开(公告)日：1981-12-22
申请号：US909694
申请日：1978-05-25
申请人： Robert J. Mayerjak
发明人： Robert J. Mayerjak
摘要： A hub assembly for a helicopter rotor system having a monolithic thin-wall hub shell made from composite material and including centrally apertured upper and lower wall portions integrally joined at the outer periphery of the shell and spaced apart at inner regions. The upper and lower wall portions cooperate to define a plurality of bearing sockets angularly spaced relative to the axis of rotation and connecting webs extending between angularly adjacent sockets. Elastomeric blade retaining bearing assemblies supported within the sockets retain and support rotor blades for articulate movement. Each bearing assembly has a seating surface which cooperates with an associated bearing surface on the socket in which it is contained to prevent relative rotation therebetween. Mounting flanges on the helicopter rotor shaft and retaining flanges on the hub shell are arranged to permit the rotor system to be lowered on the rotor shaft when the retaining flanges are disconnected from the mounting flanges.
摘要翻译： 一种用于直升机转子系统的轮毂组件，其具有由复合材料制成的整体薄壁轮毂壳，并且包括在壳体的外周处整体连接并且在内部区域间隔开的中心有孔的上壁和下壁部分。 上壁部分和下壁部分协作以限定相对于旋转轴线成角度间隔开的多个轴承座和在角度相邻的插座之间延伸的连接腹板。 支撑在插座内的弹性叶片保持轴承组件保持并支撑转子叶片以进行铰接运动。 每个轴承组件都具有一个座位表面，该座面与其所容纳的插座上的相关支承表面配合，以防止它们之间的相对旋转。 直升机转子轴上的安装法兰和轮毂壳上的保持法兰被布置成当保持凸缘与安装法兰断开时允许转子系统在转子轴上降低。
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公开(公告)号：US4354704A
公开(公告)日：1982-10-19
申请号：US192863
申请日：1980-10-01
申请人： Robert J. Mayerjak
发明人： Robert J. Mayerjak
IPC分类号： B66C1/12
CPC分类号： B66C1/12
摘要： A flexible tension member, or sling, useful as a line to hoist, lower or suspend something or as a tension loaded part of a structure or device has eyes at both of its ends for attachment to other parts or loads. The sling is comprised of a plurality of strands of cord extending between its opposite ends and twisted to form two side-by-side ropes of opposite twist direction. The various cord strands may be part of a single endless cord and the eyes at the opposite ends of the sling may have end fittings with thimbles for efficiently transferring loads from the cord strands to the end fittings.
摘要翻译： 用作提升，降低或悬挂某物或作为结构或装置的张紧装载部分的线的柔性张紧构件或吊索在其两端具有眼睛以附接到其它部件或负载。 吊索由在其相对端部之间延伸的多条绳索组成，并且被扭转以形成相反扭转方向的两个并排绳索。 各种绳索可以是单个环形帘线的一部分，并且在吊索的相对端处的眼睛可以具有带有套管的端部配件，用于将负载从绳索股线有效地传递到端部配件。
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公开(公告)号：US4156583A
公开(公告)日：1979-05-29
申请号：US814707
申请日：1977-07-11
申请人： Robert J. Mayerjak
发明人： Robert J. Mayerjak
摘要： A hub assembly for an articulated rotor system mounted on a rotor shaft comprises three plates centrally secured to the rotor shaft. The plates include generally radially disposed and axially spaced apart upper and lower plates and a cone shaped pan plate. The upper plate and pan plate have outer marginal portions transversely connected in adjacent relation and central portions connected to the rotor shaft in axially spaced apart relation. The upper plate and pan plate cooperate with the rotor shaft to form a truss for supporting blade retention assemblies equally spaced about the rotor shaft axis and mounted intermediate the upper and lower plates. One of the plates has a scalloped central aperture which cooperates with the scalloped mounting flange on the rotor shaft to facilitate angular orientation for bolt alignment during hub assembly installation.
摘要翻译： 安装在转子轴上的铰接转子系统的轮毂组件包括中心地固定到转子轴上的三个板。 这些板包括通常径向设置并且轴向间隔开的上板和下板和锥形盘。 上板和盘板具有在相邻关系中横向连接的外边缘部分和以轴向间隔开的关系连接到转子轴的中心部分。 上板和盘板与转子轴协作以形成一个桁架，用于支撑围绕转子轴轴线等距间隔的叶片保持组件，并安装在上板和下板之间。 其中一个板具有扇形中心孔，其与转子轴上的扇形安装凸缘配合，以便于在轮毂组装安装期间螺栓对准的角度定向。
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公开(公告)号：US4377102A
公开(公告)日：1983-03-22
申请号：US259082
申请日：1981-04-30
申请人： Robert J. Mayerjak
发明人： Robert J. Mayerjak
摘要： In a piano a panel, which takes the place of the usual cast iron string plate or frame, is provided for supporting the strings. The panel is a sandwich construction making it exceptionally strong and capable of withstanding the string loads without bending or otherwise yielding and without requiring auxiliary support such as the massive wooden backs or trusses to which cast iron string plates are usually attached. The string panel has a relatively thick low modulus of elasticity core layer, a portion of which is made of laminated hard wood to serve as a pin block, and relatively thin layers of high modulus of elasticity material, such as steel, bonded to the core layer. If desired the string panel may be used as the main frame of the piano to which other major components, such as the soundboard, key bed, side cheeks, housing and feet, are directly attached.
摘要翻译： 在钢琴中，用于代替通常的铸铁弦线板或框架的面板被提供用于支撑琴弦。 面板是一种三明治结构，使其非常坚固，能够承受弦线负载而不弯曲或以其他方式产生，而不需要辅助支撑，例如通常安装铸铁线板的大块木质背部或桁架。 弦板具有相对较低的低弹性芯层，其一部分由层压硬木制成，用作销块，以及相对较薄的高弹性模量材料，例如钢，结合到芯 层。 如果需要，串面板可以用作钢琴的主框架，诸如音板，钥匙床，侧面颊，外壳和脚的其他主要部件直接连接到该主框架上。
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公开(公告)号：US4329903A
公开(公告)日：1982-05-18
申请号：US080181
申请日：1979-10-01
申请人： Robert J. Mayerjak
发明人： Robert J. Mayerjak
IPC分类号： G10C3/04
CPC分类号： G10C3/04
摘要： A back frame for a piano or like instrument is comprised by a laminated composite structure having outer laminates of sheet steel and an intermediate laminate which is formed by a reconstituted wood product. The steel laminates are joined to the intermediate laminate and the intermediate laminate is substantially thicker than the sheet steel to offset the outer laminates from one another and increase the stiffness of the structure. A plurality of integral beam elements extend through the laminated structure in the same general direction as the tensioning load of the strings in the piano, and the elements are spaced from one another and define openings in the frame through which sound is emitted from the sounding board of the instrument.
摘要翻译： 用于钢琴或类似乐器的后框架由具有钢板外层板的层压复合结构和由再生木制品形成的中间层压板组成。 钢层压板连接到中间层压板，中间层压板基本上比钢板更厚，以将外层压板彼此偏移并增加结构的刚度。 多个整体光束元件在与钢琴中的弦的张紧载荷相同的大致方向上延伸穿过层压结构，并且元件彼此间隔开，并且在框架中限定了从探空板发出声音的开口 的仪器。
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公开(公告)号：US4297937A
公开(公告)日：1981-11-03
申请号：US77851
申请日：1979-09-21
申请人： Robert J. Mayerjak
发明人： Robert J. Mayerjak
IPC分类号： G10C3/04
CPC分类号： G10C3/04
摘要： A piano case or frame includes a laminated key bed and side arms joined with the bed at each end. The key bed supports the keyboard and associated portions of the piano action, and is assembled with each side arm of the frame by means of a rabbet joint. Fastening screws extending through the laminated bed into barrel nuts within each of the side arms develop significant pressure in the rabbet joints to hold the key bed and the supported keyboard in a level, undistorted position.
摘要翻译： 钢琴盒或框架包括层叠的钥匙床和在每一端与床接合的侧臂。 钥匙床支撑键盘和钢琴动作的相关部分，并通过拉杆接头与框架的每个侧臂组装。 在每个侧臂中延伸穿过层压床到桶形螺母的紧固螺钉在拉头接头中产生显着的压力，以将键床和支撑的键盘保持在水平的未失真的位置。
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