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公开(公告)号：US4515331A
公开(公告)日：1985-05-07
申请号：US316072
申请日：1981-10-28
申请人： Werner Stumpfi , Gunter Bettinger , Friedrich Engel , Horst Fitterer , Norbert Kreimes , Dietmar Pfefferkorn , Norbert Schaffer , Kurt Schmidts
发明人： Werner Stumpfi , Gunter Bettinger , Friedrich Engel , Horst Fitterer , Norbert Kreimes , Dietmar Pfefferkorn , Norbert Schaffer , Kurt Schmidts
IPC分类号： G11B23/04
CPC分类号： G11B23/044
摘要： The invention relates to a hub for magnetic tape cassettes, especially compact cassettes, and to magnetic tape cassettes possessing such hubs. In a first embodiment, spring means are provided on the inner periphery of the hub and exert radial pressures on the drive spindle, the spring means consisting, for example, of sprung teeth. In a further embodiment, the teeth have a spring rate of from about 1 P/mm to 40 P/mm. In another embodiment, the hub consists of an inner part and an outer part which can be coupled to one another and between which there is some play after coupling. A large number of specific examples of hubs are given to show possible shapes and arrangements of the teeth, and to show the types of material that can be used. In an advantageous embodiment, the inner part of the two-part hub can also be made a part of the drive spindle on the recorder, which inner part can be coupled with the outer part when the drive spindle enters the cassette.
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2.发明授权Hub for magnetic tape cassettes, especially compact cassettes, and magnetic tape cassette possessing one or more such hubs 失效用于磁带盒，特别是小型盒式磁带的集线器和具有一个或多个这种集线器的磁带盒
公开(公告)号：US4541587A
公开(公告)日：1985-09-17
申请号：US599525
申请日：1984-04-12
申请人： Werner Stumpfi , Gunter Bettinger , Friedrich Engel , Horst Fitterer , Norbert Kreimes , Dietmar Pfefferkorn , Norbert Schaffer , Kurt Schmidts
发明人： Werner Stumpfi , Gunter Bettinger , Friedrich Engel , Horst Fitterer , Norbert Kreimes , Dietmar Pfefferkorn , Norbert Schaffer , Kurt Schmidts
CPC分类号： G11B23/044
摘要： The invention relates to a hub for magnetic tape cassettes, especially compact cassettes, and to magnetic tape cassettes possessing such hubs. In a first embodiment, spring means are provided on the inner periphery of the hub and exert radial pressures on the drive spindle, the spring means consisting, for example, of sprung teeth. In a further embodiment, the teeth have a spring rate of from about 1 P/mm to 40 P/mm. In another embodiment, the hub consists of an inner part and an outer part which can be coupled to one another and between which there is some play after coupling. A large number of specific examples of hubs are given to show possible shapes and arrangements of the teeth, and to show the types of material that can be used. In an advantageous embodiment, the inner part of the two-part hub can also be made a part of the drive spindle on the recorder, which inner part can be coupled with the outer part when the drive spindle enters the cassette.
摘要翻译： 本发明涉及一种用于磁带盒，特别是小型盒式磁带的集线器以及具有这种集线器的磁带盒。 在第一实施例中，弹簧装置设置在轮毂的内周上并在驱动轴上施加径向压力，弹簧装置例如由弹簧齿组成。 在另一个实施例中，齿具有约1P / mm至40P / mm的弹簧刚度。 在另一个实施例中，轮毂由内部部分和外部部分组成，该部分和外部部分可以彼此连接，并且在连接之后有一些间隙。 轮毂的大量具体示例被给出以示出齿的可能形状和布置，并且示出可以使用的材料的类型。 在有利的实施例中，两部分轮毂的内部部分也可以被制成记录器上的驱动主轴的一部分，当驱动主轴进入盒时，该内部部分可以与外部部分联接。
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公开(公告)号：US3961990A
公开(公告)日：1976-06-08
申请号：US535578
申请日：1974-12-23
申请人： Eberhard Koester , Gerd Wunsch , Paul Deigner , Karl Uhl , Werner Stumpfi , Werner Steck
发明人： Eberhard Koester , Gerd Wunsch , Paul Deigner , Karl Uhl , Werner Stumpfi , Werner Steck
CPC分类号： C04B35/2666 , H01F1/0009 , H01F1/04 , H01F1/09 , H01F1/12
摘要： A process for the manufacture of magnetic materials containing a phase A with a ferromagnetic spin system, of composition Co.sub.x Ni.sub.1.sub.-x and a phase B with an antiferromagnetic spin system of composition (CoO).sub.x (NiO).sub.1.sub.-x , with values of x from 0.05 to 0.96, the phases A and B showing exchange interaction. The materials are manufactured by surface oxidation of starting materials having a ferromagnetic layer, at least on the surface but optionally extending deeper, of composition A, to produce the antiferromagnetic phase B, nitrous oxide being used as the oxidant. Magnetic materials thus obtained have an asymmetrical hysteresis loop, which manifests itself at different temperatures, namely the particular Neel temperature of the phase B, which depends on the composition of the phases which varies in accordance with the values of x.
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公开(公告)号：US4177317A
公开(公告)日：1979-12-04
申请号：US801162
申请日：1977-05-20
申请人： Eduard Schoenafinger , Paul Deigner , Eberhard Koester , Manfred Ohlinger , Dieter Schaefer , Werner Stumpfi , Juergen Amort , Claus-Dietrich Seiler , Heinz Nestler , Otto Ambros
发明人： Eduard Schoenafinger , Paul Deigner , Eberhard Koester , Manfred Ohlinger , Dieter Schaefer , Werner Stumpfi , Juergen Amort , Claus-Dietrich Seiler , Heinz Nestler , Otto Ambros
CPC分类号： G11B5/712 , G11B5/70636 , Y10S428/90 , Y10T428/2995
摘要： Chromium dioxide magnetic pigments can be stabilized against the loss of their magnetic properties by treating them, in alcoholic aqueous suspension, with a silane or a hydrolysis product thereof, so that when the pigment is isolated from the suspension medium the particles bear at least partially hydrolyzed silane on their surfaces, and then drying the magnetic pigment at from 50.degree. to 200.degree. C.
摘要翻译： 二氧化铬磁性颜料可以通过在醇水悬浮液中用硅烷或其水解产物处理来稳定其磁性能的损失，使得当颜料从悬浮介质中分离时，颗粒至少部分水解 硅烷，然后在50〜200℃干燥磁性颜料。
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公开(公告)号：US4017303A
公开(公告)日：1977-04-12
申请号：US595563
申请日：1975-07-14
CPC分类号： C09C1/62 , C01P2006/42
摘要： A process for the manufacture of acicular ferromagnetic metal pigments containing iron, having a reduced field strength distribution and a steeper residual magnetization curve, by applying an alkaline earth metal cation and an organic compound having at least one group capable of forming a chelate to appropriate acicular iron oxides and then reducing the treated oxides.
摘要翻译： 通过将碱土金属阳离子和具有至少一个能够形成螯合基团的有机化合物施加到适当的针状物上，制造含铁的针状铁磁性金属颜料的方法，其具有降低的场强分布和更陡的剩余磁化曲线 氧化铁，然后还原经处理的氧化物。
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