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1. 发明公开

EP0227361A3 Transducer element assembly 失效
标题翻译：传感器元件组件传感器元件组件
公开(公告)号：EP0227361A3
公开(公告)日：1988-05-04
申请号：EP86309499
申请日：1986-12-05
申请人： VICTOR COMPANY OF JAPAN, LIMITED
发明人： Kinjo, Hisao
IPC分类号： G11B03/38 , G11B21/16 , G11B05/48
CPC分类号： G11B21/16 , G11B5/4833
摘要： A transducer element assembly comprises a transducer element (2l,) having a scanning surface for scanning a recording surface of a recording medium, a cantilever (ll,) having the transducer element provided on a free tip end thereof and having a pair of holes (l4, l5;) provided on a root end thereof, a support part (l2,) having a pair of generally conical pivots (l7, l8;), and a magnetic coupling mechanism (l3, l9; l3,) provided on the cantilever (ll) and on the support part (l2) for magnetically coupling the two by a magnetic attraction or repulsion. The cantilever (ll) is detachably mounted on the support part (l2) and is user replaceable. When the cantilever (ll) is mounted on the support part (l2), the pivots (l7, l8) engage the corresponding holes (l4, l5) and the cantilever (ll) is rotatable about the root end thereof in a direction approximately perpendicular to the scanning surface of the transducer element. The magnetic attraction or repulsion generated by the magnetic coupling mechanism acts with a predetermined magnitude in a predetermined direction so that the transducer element (ll) makes contact with the recording surfac e of the recording medium with a predetermined contact pressure.

2. 发明申请

WO1982001956A1 IMPROVEMENTS IN PHONOGRAPH PICKUP ARMS 审中-公开
标题翻译： PHONOGRAPH PICKUP ARMS中的改进
公开(公告)号：WO1982001956A1
公开(公告)日：1982-06-10
申请号：PCT/AU1981000173
申请日：1981-11-27
申请人： CHIDZEY WILLIAM J , CHIDZEY JOHN A
IPC分类号： G11B03/38
CPC分类号： G11B3/08512 , G11B3/38
摘要： A pickup arm assembly for gramophone disc records comprises a pickup arm (6) pivotally mounted to a driven arm (8) movable about an axis substantially parallel to the axis of rotation of the record disc (A). The pickup arm pivot (7) carries a target (11) which coacts with a position sensor (12) mounted on the driven arm (8) to sense changes in the angle subtended between the pickup arm (6) and the driven arm (8). The position sensor (12) provides a signal corresponding to any deviation of the angle from a desired predetermined angle to operate drive means (9) for the driven arm (8) to thereby move the arm in a direction to reduce such deviation. The relationship of the position sensor (12) to the driven arm (8) may be varied in accordance with variations in the position of the driven arm (8) to reduce or illuminate tracking errors.
摘要翻译：用于留声机唱盘记录的拾音臂组件包括枢转地安装到从动臂（8）的拾取臂（6），该从动臂可绕基本上平行于记录盘（A）旋转轴线的轴线移动。拾取臂枢轴（7）承载与安装在从动臂（8）上的位置传感器（12）共同作用的目标（11），以检测拾取臂（6）和从动臂（8））。位置传感器（12）提供对应于角度与期望的预定角度的任何偏差的信号，以操作用于从动臂（8）的驱动装置（9），从而沿着减小这种偏差的方向移动臂。位置传感器（12）与从动臂（8）的关系可以根据从动臂（8）的位置变化来改变，以减少或照亮跟踪误差。

3. 发明申请

WO1982002273A1 LINEAR TRACKING TONE ARM 审中-公开
标题翻译：线性跟踪音调ARM
公开(公告)号：WO1982002273A1
公开(公告)日：1982-07-08
申请号：PCT/US1981001732
申请日：1981-12-21
申请人： SOUTHER LOUIS CUSHING
IPC分类号： G11B03/38
CPC分类号： G11B3/38
摘要： Mecanisme (10) de bras de lecture lineaire pour un tourne-disque (20) comprenant un boitier (12) possedant un element s'emboitant (14) dans l'axe (26) d'un tourne-disque (20) et un element pouvant etre monte (24) sur le tourne-disque (20) pour soutenir le boitier (12) au-dessus du tourne-disque (20); un chemin allonge generalement horizontal (46) monte sur le boitier (12) et s'etendant longitudinalement en general dans la direction entre l'element s'emboitant (14) et l'element de montage (24) et possedant une voie de roulement anterieure (52) et une voie de roulement posterieure parallele (54); un chariot (58) comprenant un premier (60) et un deuxieme (62) rouleaux posterieurs s'engageant dans la voie de roulement posterieure (54) et un rouleau anterieur (64) s'engageant dans la voie de roulement anterieure (52); un bras de lecture (66); et des elements permettant le montage (120) du bras de lecture (66) sur le chariot (12).

4. 发明申请

WO1981000163A1 PHONOGRAPH TONE ARM CONTROL SYSTEM 审中-公开
标题翻译： PHONOGRAPH音调ARM控制系统
公开(公告)号：WO1981000163A1
公开(公告)日：1981-01-22
申请号：PCT/US1980000798
申请日：1980-06-26
申请人： MASTERSON ENG INC
发明人： MASTERSON ENG INC , MASTERSON E
IPC分类号： G11B03/38
CPC分类号： G11B3/125 , G11B3/08529 , G11B3/38
摘要： A multi-function phonograph tone arm control system for a low-friction air bearing supported linear-travelling tone arm system. Positive horizontal linear positioning is accomplished by means of an electromagnetic force producing system (39, 40, 46, 47) in which opposing linear forces may be balanced at any point along the path of straight-line travel of the tone arm (33) to position the tone at any desired location. A separate electromagnetic force producing system (39, 40, 48) is utilized to control the vertical pivoting of the tone arm (33) including the presence of the stylus on a phonograph record. A further motion damping means is provided to stabilize the motion of the tone arm and prevent any unwanted vibration of the tone arm. A means (81) for automatically shutting off the system at the end of a record is also provided.

5. 发明申请

WO1981000164A1 PHONOGRAPH TONE ARM SYSTEM 审中-公开
标题翻译： PHONOGRAPH音调ARM系统
公开(公告)号：WO1981000164A1
公开(公告)日：1981-01-22
申请号：PCT/US1980000799
申请日：1980-06-26
申请人： MASTERSON ENG INC
发明人： MASTERSON ENG INC , MASTERSON E
IPC分类号： G11B03/38
CPC分类号： G11B3/31 , G11B3/38
摘要： An improved phonograph tone arm device (33) in which the pickup, including the stylus, is supported on a low friction air-bearing support (25) which provides for essentially frictionless movement of the tone arm (33) and pickup (34) both in horizontal linear travel and vertical pivoting to assure proper stylus pressure. The tone arm support system includes a support member (25) having an upper surface (29) which is shaped as a right circular through or cylinder section and a floating member (30) which has a juxtaposed matching convex or concave lower surface. A recess (31) in the lower surface of the floating member forms a plenum to which air is supplied from one or more openings (28) in the support member. The length of the plenum is such that the supply openings are always beneath the plenum confines during the full traverse of the stylus across a record to be played to minimize the amount of air required and maximize uniformity of support for the floating member. Alternate embodiments allow either the upper or lower surface of the record to be played.

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