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    • 3. 发明授权
    • Method of forming a strip heater expansion joint
    • 形成带状加热器膨胀节的方法
    • US4235012A
    • 1980-11-25
    • US938592
    • 1978-08-31
    • David W. Liedholm
    • David W. Liedholm
    • F16L53/00H01C17/07H05B3/58H01C1/016
    • F16L53/008H01C17/07H05B3/58Y10T29/49083
    • An expansion joint for metallic foil strip heaters encasing resistive heating elements comprised of a bend formed in the metallic foil strips. The expansion joint is formed by use of a tool for passing a roller in the tool handle over a rigid forming support affixed to the tool bottom forming plate with the metallic foil strip heater placed between the roller and the forming support. The tool is then removed and a flexible metal support hose is affixed to the object to be heated with the bend in the metallic foil strips placed over this support hose. The bend is then affixed to the object to be heated on either side of the support hose.
    • 一种用于金属箔条加热器的膨胀接头,其包围形成在金属箔条中的弯曲部分的电阻加热元件。 膨胀接头通过使用用于将工具把手中的辊通过固定到工具底部形成板的刚性成形支撑件上的工具形成,金属箔片加热器放置在辊和成形支撑件之间。 然后移除该工具,并且将柔性金属支撑软管与放置在该支撑软管上的金属箔条中的弯曲部分固定到待加热物体上。 然后将弯曲部固定在待加热物体的两侧的支撑软管上。
    • 10. 发明申请
    • Method of manufacturing a resistor
    • 制造电阻的方法
    • US20050083170A1
    • 2005-04-21
    • US10967883
    • 2004-10-18
    • Joseph SzwarcReuven Goldstein
    • Joseph SzwarcReuven Goldstein
    • H01C3/00H01C7/06H01C17/07H01L21/44
    • H01C17/07H01C7/06Y10T29/49082Y10T29/49085Y10T29/49099Y10T29/49101
    • A high precision power resistor having the improved property of reduced resistance change due to power is disclosed. The resistor includes a substrate having first and second flat surfaces and having a shape and a composition; a resistive foil having a low TCR of about 0.1 to about 1 ppm/° C. and a thickness of about 0.03 mils to about 0.7 mils cemented to one of the flat surfaces with a cement, the resistive foil having a pattern to produce a desired resistance value, the substrate having a modulus of elasticity of about 10×106 psi to about 100×106 psi and a thickness of about 0.5 mils to about 200 mils, the resistive foil, pattern, type and thickness of cement, and substrate being selected to provide a cumulative effect of reduction of resistance change due to power. The present invention also provides for a method of producing a high precision power resistor.
    • 公开了一种具有由电力降低的电阻变化性能改善的高精度功率电阻器。 电阻器包括具有第一和第二平坦表面并具有形状和组成的基板; 具有约0.1至约1ppm /℃的低TCR和约0.03密耳至约0.7密耳的低TCR的电阻箔与水泥粘合到一个平坦表面,电阻箔具有产生期望的图案的图案 电阻值,基板的弹性模量为约10×10 -6 psi至约100×10 6 psi,厚度为约0.5密尔至约200密耳,电阻箔, 水泥的图案,类型和厚度,以及基板被选择以提供由于电力而导致的电阻变化的降低的累积效应。 本发明还提供一种制造高精度功率电阻器的方法。