| 摘要 |
An electrical contact includes a hollow tube having first and second end portions and a center portion; and a spring portion formed in a wall of the hollow tube. The spring portion may be located in the center portion of said hollow tube or in one of the first and second end portions of the hollow tube. The spring portion may be a helical spring portion and may include two helical portions wound in opposite directions. At least one of the first and second end portions may have a diameter that is less than a diameter of said center portion. At least one of the first and second end portions may have a hemispherical shape or closed end. The hollow tube may be of a metal such as stainless steel or may be a hollow tube coated with an electrically conductive material such as one of copper, silver, or gold. The contact may have a shoulder having a diameter which is greater than the diameter of at least one of the first and second end portions and said center portion of the tube and may be disposed between one of the first and second end portions and the center portion of the tube or in one of the first and second end portions or the center portion of the tube.
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