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81. 发明授权

US3849798A Cartridge adapter 失效
标题翻译：卡座适配器
公开(公告)号：US3849798A
公开(公告)日：1974-11-19
申请号：US29564472
申请日：1972-10-06
申请人： PIONEER ELECTRONIC CORP
发明人： ONO Y
IPC分类号： G11B23/07 , G11B25/06 , G11B31/00
CPC分类号： G11B25/066
摘要： In a cartridge adapter in which torque is transmitted from the capstan of the tape recorder to the tape in the small-sized tape cartridge by means of an idler and a driving idler, the idler and the driving idler may be mounted on flexible shafts positioned so that they are forced into firm contact with each other by the pressure of the tape recorder capstan against the idler when the adapter is in use, but are not touching or are just barely in contact when the adapter is in use, thereby avoiding the risk that they will produce permanent deformation to each other when the adapter is not in use.
摘要翻译：在其中扭矩通过惰轮和驾驶惰轮从磁带录音机的绞盘传送到小尺寸磁带盒中的磁带的盒式磁带适配器中，惰轮和驱动惰轮可以安装在这样定位的柔性轴上当适配器正在使用时，由于磁带录放机绞盘的压力而被迫使其彼此牢固接触，而是在适配器使用时不接触或刚刚接触，从而避免了风险，当适配器不使用时，它们将产生彼此的永久变形。

82. 发明授权

US3830986A Magnetic circuit for an electro-acoustic converter 失效
标题翻译：用于电声转换器的磁电路
公开(公告)号：US3830986A
公开(公告)日：1974-08-20
申请号：US31596372
申请日：1972-12-18
申请人： PIONEER ELECTRONIC CORP
发明人： YAMAMURO I
IPC分类号： H04R9/02
CPC分类号： H04R9/025
摘要： An improvement in an electro-acoustic converter having a magnetic circuit with an air gap therein, the improvement including an air gap formed of a magnetic material laminated with a conductive layer having a comparatively higher magnetic resistance in the magnetic circuit, thereby increasing a magnetic resistance against a magnetic flux caused by a voice coil and acting the conductive layer as shorting rings to decrease the inductance of the voice coil, and thus eliminating the reproduction distortion caused by the magnetic non-linearity of the magnetic circuit.
摘要翻译：具有其中具有气隙的磁路的电声转换器的改进，其改进包括由在磁路中具有相对较高磁阻的导电层层叠的磁性材料形成的气隙，从而增加磁阻抵抗由音圈引起的磁通，并且将导电层作为短路环来降低音圈的电感，从而消除由磁路的磁性非线性引起的再现失真。

83. 发明授权

US3821810A Tape recorder 失效
标题翻译：磁带录音机
公开(公告)号：US3821810A
公开(公告)日：1974-06-28
申请号：US15759071
申请日：1971-06-28
申请人： PIONEER ELECTRONIC CORP
发明人： MARUYAMA Y
IPC分类号： G11B15/02 , G11B15/18 , G11B15/44 , G11B15/26
CPC分类号： G11B15/1883 , G11B15/442
摘要： IN A REVERSIBLE TAPE RECORDER, MEANS ARE PROVIDED FOR EFFECTING A DIRECTION OF TAPE FEEDING DURING THE REPRODUCING OPERATION THAT CORRESPONDS TO THE DIRECTION OF TAPE FEEDING DURING THE FAST FEEDING OPERATION, WHEN THERE IS A CHANGE FROM THE FAST FEEDING TO THE REPRODUCING OPERATION. SUCH MEANS COMPRISE A ROTATABLE CAM PLATE WHICH IS ROTATABLE IN OPPOSITE DIRECTIONS TO EFFECT CHANGES IN THE TAPE FEEDING DIRECTION.

84. 发明授权

US3814988A Detecting circuit for a main amplifier protecting circuit 失效
标题翻译：检测主放大器保护电路的电路
公开(公告)号：US3814988A
公开(公告)日：1974-06-04
申请号：US20573571
申请日：1971-12-07
申请人： PIONEER ELECTRONIC CORP
发明人： ITO H
IPC分类号： H03F1/52 , H02H3/26
CPC分类号： H03F1/52
摘要： A detecting circuit for a main amplifier protecting circuit, the detecting circuit having a pair of diodes connected to push-pull transistors of the amplifier each conducting when one of the transistors becomes ON, a load and resistors connected to the push-pull output transistors in the form of bridge circuits when the diode becomes ON, whereby the outputs of the respective bridge circuits are common, the main amplifier being protected by activating the protecting circuit from the output of the bridge circuits when the resistance of the load becomes less than a predetermined value.
摘要翻译：一种用于主放大器保护电路的检测电路，所述检测电路具有连接到所述放大器的推挽晶体管的一对二极管，所述一对二极管在所述晶体管中的一个导通时导通，连接到所述推挽输出晶体管的负载和电阻器当二极管导通时桥形电路的形式，由此各桥电路的输出是共同的，当负载电阻变得小于预定值时，主放大器被保护从桥电路的输出激活保护电路值。

85. 发明授权

US3787625A Automatic telephone answering apparatus with confirmation of answer gap length for midcycle switching 失效
标题翻译：自动电话解答装置，确定中间切换的解答长度
公开(公告)号：US3787625A
公开(公告)日：1974-01-22
申请号：US3787625D
申请日：1971-07-14
申请人： PIONEER ELECTRONIC CORP
发明人： SATO T
IPC分类号： H04M1/65 , H04M1/64 , G11B27/22
CPC分类号： H04M1/6515
摘要： Disclosed herein is an automatic telephone answering apparatus which sends out an outgoing message to a calling party in a minimum time period and automatically switches to a recording state to record an incoming message from the calling party in response to the end of the outgoing message even though the tape which carries the outgoing message has not completed an entire revolution.
摘要翻译：这里公开了一种自动电话应答设备，其在最短时间段内向主叫方发送出去的消息，并且响应于呼出消息的结束而自动切换到记录状态以记录来自主叫方的传入消息，即使即使携带传出消息的磁带尚未完成整个革命。

86. 发明授权

US3747939A Tape cartridge exchanging device 失效
标题翻译：胶带盒交换装置
公开(公告)号：US3747939A
公开(公告)日：1973-07-24
申请号：US3747939D
申请日：1970-11-10
申请人： PIONEER ELECTRONIC CORP
发明人： IWASAKI T
IPC分类号： G11B15/68 , G11B5/00
CPC分类号： G11B15/683
摘要： A tape cartridge exchanging device to be utilized on magnetic tape recorders for the purpose of exchanging two tape cartridges inserted into the magnetic tape recorder. The cartridge exchanging device has a forked lever that is activated by a plunger for simultaneously depressing and releasing the respective pinch rollers on a pair of tape cartridges. Spring connections bias the various levers to a neutral position.
摘要翻译：一种用于磁带录音机的磁带盒更换装置，用于更换插入磁带录音机的两个磁带盒。盒更换装置具有由柱塞启动的叉形杆，用于同时按压和释放一对带盒上的相应的夹送辊。弹簧连接将各种杠杆偏置到中立位置。

87. 发明授权

US3719250A Speaker system 失效
标题翻译：扬声器系统
公开(公告)号：US3719250A
公开(公告)日：1973-03-06
申请号：US3719250D
申请日：1972-03-15
申请人： PIONEER ELECTRONIC CORP
发明人： MAEKAWA K
IPC分类号： H04R1/02 , G10K13/00 , H04R1/28
CPC分类号： H04R1/02
摘要： A speaker system mounting arrangement which allows the middle and high frequency sounds to be directed in a desired direction to give a better sound reproduction without changing the position of the speaker enclosure, by mounting the middle and high frequency sound range speakers in a globe member having an opening on one side thereof and movably mounting the globe member in an opening formed in the enclosure installation or mounting board and is spring biased to allow the globe member to be rotated to position the sound axis of the speaker in any desired direction without moving the speaker enclosure.
摘要翻译：一种扬声器系统安装装置，通过将中高频声音扬声器安装在具有第一和第二声音的扬声器的球形构件中，所述扬声器系统安装装置允许中频和高频声音以期望的方向被引导以提供更好的声音再现，而不改变扬声器外壳的位置，在其一侧上的开口并且将球形构件可移动地安装在形成在外壳安装或安装板中的开口中并且被弹簧偏置以允许球形构件旋转以将扬声器的声轴定位在任何期望的方向上，而不移动扬声器外壳。

88. 发明授权

US3706021A Direct current motor with electrical braking device 失效
标题翻译：具有电动制动装置的直流电动机
公开(公告)号：US3706021A
公开(公告)日：1972-12-12
申请号：US3706021D
申请日：1970-09-17
申请人： PIONEER ELECTRONIC CORP
发明人： YANAGIDA KIYOSHI
IPC分类号： H02P6/24 , H02P5/16
CPC分类号： H02P6/24 , Y10S388/932
摘要： A DIRECT CURRENT MOTOR HAVING A ROTOR WITH A PAIR OF MAGNETIC POLES, A PAIR OF DRIVING COILS AND A POWER SOURCE AND POWER SWITCHING MEANS FOR SUPPLYING CURRENT ALTERNATIVELY TO THE DRIVING COILS, IS PROVIDED WITH AN ELECTRICAL BRAKING DEVICE. THIS BRAKING DEVICE DETECTS AND INDUCED VOLTAGE GENERATED IN THE DRIVING COILS DUE TO THE MAGNETIC POLES. WHEN SPEED CHANGE-OVER MEANS ARE SWITCHED FROM A FAST SPEED MODE TO A SLOW SPEED MODE, THAT IS, IF THE DETECTED VOLTAGE IS LARGER THAN THE PREDETERMINED VALUE, THE REVOLUTION RATE OF THE ROTOR IS HIGHER THAN A PREDETERMINED SLOW SPEED RATE, THE DIRECTION OF THE OUTPUT CURRENT OF THE POWER SWITCHING MEANS CHANGES, SUBJECTING THE ROTOR TO A BRAKING FORCE. THE MOTOR IS THEREBY RAPIDLY SWITCHED TO A SLOW SPEED THROUGH A PURELY ELECTRICAL BRAKING FORCE GENERATED BY THE DRIVING COILS.

89. 发明授权

US3693752A Loud speaker system 失效
标题翻译：扬声器系统
公开(公告)号：US3693752A
公开(公告)日：1972-09-26
申请号：US3693752D
申请日：1971-09-28
申请人： PIONEER ELECTRONIC CORP
发明人： KINOSHITA SHOUZO , YAMAMURA ISAO
IPC分类号： H04R1/22 , G10K13/00 , H04R1/28
CPC分类号： H04R1/225
摘要： A loud speaker is installed on the rear plane of a baffle board facing an opening within the baffle board which opening in cross section takes the form of a narrow forwardly directed cone and an annular acoustic resistance member which is triangular shaped in section is fixed to the cutting plane of the opening. Alternatively, a ring member which narrows in a forward direction to form a forwardly narrowing cone in cross section is fixed to the front of a loud speaker flange and fits within a baffle board opening with the flange installed on the rear plane of the baffle board. An annular acoustic resistance member of triangular cross section is fixed to the inside surface of the forwardly narrowing ring or to the front surface of the loud speaker flange internally of the ring.
摘要翻译：一个扬声器安装在挡板的背面上，面对挡板内的一个开口，横截面为开口，形成一个狭窄的向前定向的锥体，一个三角形截面的环形声阻元件固定在切割平面的开口。或者，在向前方向变窄以形成向前变窄的锥体的环形构件被固定到扬声器凸缘的前部，并且安装在挡板开口中，凸缘安装在挡板的后平面上。三角形横截面的环形声阻构件固定在前端窄环的内表面或固定在环的内部的扬声器凸缘的前表面。

90. 发明授权

US3680872A Embedded adapter for turntable 失效
标题翻译：嵌入式适配器
公开(公告)号：US3680872A
公开(公告)日：1972-08-01
申请号：US3680872D
申请日：1970-12-02
申请人： PIONEER ELECTRONIC CORP
发明人： HIRAKI TAKAYUKI
IPC分类号： G11B17/028 , G11B3/60
CPC分类号： G11B17/0281
摘要： An adapter for a doughnut type phonograph record disc which is embedded in a recess of the turntable when an ordinary LP record is to be played, comprises a supporting plate having an upwardly rising annular ridge forming a fulcrum, an annular toggle spring plate placed on said supporting plate, a cylindrical body serving as the adapter and having its lower edge abutting with the upper surface of the spring plate along an outer circumferential position, and a depressing plate located inwardly of said cylindrical body and having its lower edge abutting with the upper surface of the spring plate along an inner circumferential position, all of these members being included inside of a recessed portion of the turntable, whereby when the depressing plate is pushed downwardly, said cylindrical body rises up to engage the central hole of the doughnut type record.
摘要翻译：一种用于在要播放普通LP记录时嵌入在转盘的凹部中的甜甜圈型留声机记录盘的适配器，包括：支撑板，其具有形成支点的向上上升的环形脊;安置在所述旋转弹簧板上的环形拨片弹簧板支撑板，用作适配器的圆柱形主体，并且其下边缘沿着外周位置与弹簧板的上表面邻接;以及位于所述圆柱体的内侧的按压板，并且其下边缘与上表面邻接弹簧板沿着内周位置，所有这些构件都包括在转台的凹部内部，由此当按压板被向下推动时，所述圆柱体上升以接合环形记录的中心孔。

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