专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US4348706A Edge guide for a magnetic tape 失效
标题翻译：磁带边缘导轨
公开(公告)号：US4348706A
公开(公告)日：1982-09-07
申请号：US165890
申请日：1980-07-03
申请人： Bernard P. Videc
发明人： Bernard P. Videc
IPC分类号： G11B5/52 , G11B15/60 , G11B15/61
CPC分类号： G11B15/60 , G11B15/61
摘要： A tape recorder having a tape guide member with a guide edge against which the tape is loaded or biased by pressure members. To press the tape against the supporting edge with a transverse force approximately constant per unit of length, pressure members are arranged beyond the ends of the tape-supporting edge, and the tape supporting edge has a curvature convex toward the tape, with a peak substantially midway between tape-support entry and exit points having a smaller radius of curvature than that of the remainder of the tape-supporting edge.
摘要翻译：一种磁带录音机，具有带引导件的带导向件，带子由该引导边缘装载或被压力元件偏置。为了以每单位长度近似恒定的横向力将带子压靠支撑边缘，压力构件布置在带支撑边缘的端部之外，并且带支撑边缘具有朝向带凸起的曲率，其基本上具有峰值带支撑入口点和出口点之间的中间具有比带支撑边缘的其余部分更小的曲率半径。

2. 发明授权

US4607382A Electroacoustic transducer unit with reduced resonant frequency and mechanical spring with negative spring stiffness, preferably used in such a transducer unit 失效
标题翻译：具有降低谐振频率的电声换能器单元和具有负弹簧刚度的机械弹簧，优选用于这种换能器单元中
公开(公告)号：US4607382A
公开(公告)日：1986-08-19
申请号：US598637
申请日：1984-04-10
申请人： Kees Dijkstra , Bernard P. Videc , Jan Huizinga
发明人： Kees Dijkstra , Bernard P. Videc , Jan Huizinga
IPC分类号： H04R1/28 , H04R1/42 , H04R3/00 , H04R7/16 , H04R7/26 , H04R9/06 , H04R29/00
CPC分类号： H04R9/06 , H04R1/42 , H04R7/26
摘要： An electroacoustic transducer unit comprises an electroacoustic transducer with a diaphragm (1), a magnet system (2) with an air gap (3), and a voice-coil former (4) with a voice coil (5) arranged in the air gap (3) of the magnet system. The transducer unit comprises means for reducing the transducer resonant frequency including mechanical springs with negative spring stiffness each coupled between a stationary part of the transducer unit and a movable part, for example the voice-coil former or the diaphragm of the transducer (FIG. 1b). The transducer unit further comprises a control device (42) which generates a control signal for correcting the position of the diaphragm. The mechanical spring with negative spring stiffness comprises two blade springs with both ends coupled to each other and which, under the influence of a compressive force F which acts in a direction along an imaginary line through both ends of the mechanical spring, are each bent in one of two opposite directions.
摘要翻译：一种电声换能器单元包括具有隔膜（1）的电声换能器，具有空气间隙（3）的磁体系统（2）和具有布置在气隙中的音圈（5）的音圈形成器（4）（3）。换能器单元包括用于减小换能器谐振频率的装置，其包括具有负弹簧刚度的机械弹簧，每个弹簧刚度均耦合在换能器单元的固定部分和可移动部件之间，例如音圈形成器或换能器的隔膜（图1b ）。换能器单元还包括产生用于校正隔膜位置的控制信号的控制装置（42）。具有负弹簧刚度的机械弹簧包括两个叶片弹簧，其两端彼此连接，并且在沿着沿机械弹簧两端的假想线的方向作用的压缩力F的作用下，两个相反方向之一。

3. 发明授权

US4722517A Mechanical spring having negative spring stiffness useful in an electroacoustic transducer 失效
标题翻译：具有负弹簧刚度的机械弹簧，可用于电声换能器
公开(公告)号：US4722517A
公开(公告)日：1988-02-02
申请号：US844048
申请日：1986-03-26
申请人： Kees Dijkstra , Bernard P. Videc , Jan Huizinga
发明人： Kees Dijkstra , Bernard P. Videc , Jan Huizinga
IPC分类号： H04R1/28 , H04R1/42 , H04R3/00 , H04R7/16 , H04R7/26 , H04R9/06 , F16F3/00
CPC分类号： H04R9/06 , H04R1/42 , H04R7/26
摘要： A mechanical spring with negative spring stiffness adapted for use in an electroacoustic transducer unit for reducing the transducer resonant frequency. The mechanical spring with negative spring stiffness comprises two blade springs having both ends coupled to each other and which, under the influence of a compressive force F which acts in a direction along an imaginary line through both ends of the mechanical spring, are each bent in one of two opposite directions.

4. 发明授权

US4425809A Measuring of tension and moments in a thin flexible tape 失效
标题翻译：在薄的柔性胶带中测量张力和力矩
公开(公告)号：US4425809A
公开(公告)日：1984-01-17
申请号：US323839
申请日：1981-11-23
申请人： Bernardus L. M. van Bakel , Guillaume P. C. van Kooijk , Bernard P. Videc
发明人： Bernardus L. M. van Bakel , Guillaume P. C. van Kooijk , Bernard P. Videc
IPC分类号： G01B13/06 , G01L5/08 , G11B15/60 , G11B15/64
CPC分类号： G01L5/08 , G01B13/06 , G11B15/607 , G11B15/64
摘要： A device, and method of using such a device, for measuring tension in a thin flexible tape by guiding the tape along a curved path between two parallel curved guides, supplying pressurized gaseous medium to each side of the tape, and measuring the difference in gas pressure between the two sides of the tape. Measuring ducts, terminating substantially opposite each other in the curved guide surfaces are connected to at least one pressure transducer which in turn is connected to an electrical measuring circuit.
摘要翻译：一种使用这种装置的装置和方法，用于通过沿着两个平行弯曲导向件之间的弯曲路径引导带来测量薄柔性带中的张力，将加压气态介质供应到带的每一侧，并测量气体差胶带两面之间的压力。在弯曲的引导表面中基本上彼此相对终止的测量管连接到至少一个压力换能器，压力传感器又连接到电测量电路。

5. 发明授权

US4318957A Carrier foil for a magnetic recording tape, and method of manufacturing same 失效
标题翻译：用于磁记录带的载体箔及其制造方法
公开(公告)号：US4318957A
公开(公告)日：1982-03-09
申请号：US973274
申请日：1978-12-26
申请人： Bernard P. Videc
发明人： Bernard P. Videc
IPC分类号： B29C49/00 , B29C55/00 , B29C55/12 , G11B5/73 , G11B5/84 , G11B5/62
CPC分类号： G11B5/7305 , G11B5/84 , Y10S428/90 , Y10S428/91 , Y10T428/249942 , Y10T428/31725 , Y10T428/31786
摘要： The invention provides a carrier foil for magnetic recording tapes composed of a thermoplastic synthetic resin, which foils have been manufactured so that the stiffness (elasticity modulus) E.sub.1 in the longitudinal direction of the foil is at least 4000 N/mm.sup.2 and the stiffness (elasticity modulus) in the transverse direction of the foil is at least 1.3 E.sub.1. These carrier foils are more suitable for very thin magnetic tapes and are more resistant against defects such as buckling, folding, wrinkling and cupping than known carrier foils for record carriers having a comparable stiffness, but in which the stiffness distribution is different.
摘要翻译：本发明提供了一种由热塑性合成树脂构成的磁记录带的载体箔，该箔已被制造成使得箔的纵向上的刚度（弹性模量）E1至少为4000N / mm 2，刚度（弹性模量）在箔的横向方向为至少1.3E1。这些载体箔更适用于非常薄的磁带，并且比具有相当硬度的记录载体的已知载体箔更耐抗弯曲，折叠，起皱和拔罐等缺陷，但刚度分布不同。

6. 发明授权

US4199796A Tape guide arrangement for a transversely scanning magnetic recorder 失效
标题翻译：用于横向扫描磁记录器的磁带引导装置
公开(公告)号：US4199796A
公开(公告)日：1980-04-22
申请号：US885616
申请日：1978-03-13
申请人： Bernard P. Videc
发明人： Bernard P. Videc
IPC分类号： G11B15/61 , G11B15/62 , G11B15/60
CPC分类号： G11B15/62 , G11B15/61 , G11B15/615
摘要： A transversely scanning magnetic tape recorder having a concave tape guide member which shapes and aligns the tape at a location by the rotating magnetic heads and between two cylindrical tape guides. The magnetic tape is deformed in cross-section from straight to curved and then back from curved to straight. To prevent kinks and folds in the magnetic tape as a result of this deformation, tape curving means exert pressure on the magnetic tape to increase the local degree of curvature of the magnetic tape. As a result, differences in local membrane stress in the tape cross-section at the location of the rotary magnetic head paths are reduced.
摘要翻译：一种具有凹形引导件的横向扫描磁带录像机，其通过旋转磁头在两个圆柱形带导轨之间在一个位置对带进行成形和对准。磁带的横截面从直线变成弯曲，然后从弯曲变成直线。为了防止由于这种变形而导致的磁带中的扭结和褶皱，带弯曲装置对磁带施加压力以增加磁带的局部曲率。结果，在旋转磁头路径的位置处的带横截面中的局部膜应力的差异减小。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式