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    • 6. 发明授权
    • Method and apparatus for applying stretchable, protective wrap
    • 用于施加伸缩性保护包装的方法和装置
    • US4609579A
    • 1986-09-02
    • US750890
    • 1985-07-01
    • Gary G. Hills
    • Gary G. Hills
    • H02G15/196B32B27/14
    • H02G15/196Y10T428/24802Y10T428/24901
    • A self-adherent, stretchable, resilient pressure wrapping tape and method of application for compressingly protecting a wire splice or the like, the tape having a gauge incorporated therein for indicating the amount of stretch of the tape. The tape is stretchingly wrapped around the wire splice and has a tensile strength and resilient memory to compressingly engage the wire splice. It is necessary to stretch the tape a certain amount to apply the correct amount of compression; therefore, a gauge is included which indicates the amount of stretch of the tape. The gauge includes a plurality of longitudinally spaced impressions printed on the tape which have a certain visual appearance with the tape unstretched, and another visual appearance when the tape is stretched to the correct amount for the desired compression. For example, the impression may appear as a rectangle with illegible lettering with the tape unstretched, but with the tape stretched correctly the impression appears as a square with legible lettering.
    • 一种自粘合的,可拉伸的,弹性的压力包装带和用于压缩地保护导线接头等的应用方法,该带具有并入其中的表,用于指示带的拉伸量。 磁带被拉伸缠绕在电线接头上,并且具有拉伸强度和弹性记忆以压缩地接合电线接头。 必须拉伸胶带一定量才能施加正确的压缩量; 因此,包括指示带的拉伸量的规格。 该计量器包括印刷在带上的多个纵向间隔的印痕,其具有一定的视觉外观,其中未拉伸的带,以及当将带拉伸至正确的量以达到期望的压缩时的另一视觉外观。 例如,印象可能显示为一个矩形,具有无法刻字的矩形,胶带未拉伸,但胶带正确拉伸,印象显示为具有清晰刻字的正方形。
    • 9. 发明授权
    • Method and apparatus for molding splices in cables
    • 用于在电缆中成型接头的方法和设备
    • US3970488A
    • 1976-07-20
    • US556519
    • 1975-03-07
    • Arthur L. Nelson
    • Arthur L. Nelson
    • H02G1/14F16G11/00H02G15/196B21F15/02
    • H02G15/196
    • A molded cable splice is formed by wrapping strip-formed semiconducting and insulative thermosetting molding compounds about a layer of semiconducting tape covering a connector and exposed central conductors of a pair of cable ends joined by the connector, and bonding the insulative molding compound to the cable insulation layer in a heated mold having opposing end clamp portions each with an inner surface of a predetermined radius and length. The radius is selected in accordance with the formula ##EQU1## , WHERE R IS THE RADIUS OF THE CABLES TO BE JOINED AND X is a numerical quantity called the cable clamp factor. For cables having an ethylene propylene rubber insulation layer, X lies in the range from about 0.20 to about 0.50; for cables with a cross-linked polyethylene insulation layer, X is partially dependent on insulation thickness W and lies between a lower range of from about 0.50 to about 0.76 for W = 0.175 inch and an upper range of from about 0.87 to about 1.00 for W = 0.900 inch. The axial length of the end clamp portions optimally lies in the range from about 2.5 to about 3.5 inches. The end clamp portions may also be tapered in the outward direction, with the taper angle preferably in the range from 2.degree. to 4.degree., and the radius at substantially the mid-point between the inner and outer boundary of each end clamp portion selected in accordance with the above formula.
    • 通过将带状半导体和绝缘热固性模塑化合物缠绕在覆盖连接器的半导体带的层和通过连接器连接的一对电缆端部的暴露的中心导体之间并将绝缘模塑料粘合到电缆上而形成模制电缆接头 在加热模具中的绝缘层具有相对的端部夹持部分,每个端部夹具部分具有预定半径和长度的内表面。 半径根据公式2rX R = 2ROOT + r2 pi选择,其中R是要加入的电缆的半径,X是称为电缆夹紧因子的数字量。 对于具有乙丙橡胶绝缘层的电缆,X在约0.20至约0.50的范围内; 对于具有交联聚乙烯绝缘层的电缆,X部分地取决于绝缘厚度W,并且对于W = 0.175英寸而言位于约0.50至约0.76的较低范围和对于W的约0.87至约1.00的较高范围 = 0.900英寸。 端部夹持部分的轴向长度最佳地在约2.5至约3.5英寸的范围内。 端部夹持部分也可以在向外的方向上锥形,锥形角优选在2°至4°的范围内,并且在每个端部夹紧部分的内部和外部边界之间的中点处的半径在 按照上述公式。