Low resistance electrical spring probe
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United States of America Patent
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Jul 24, 1984
Grant Date -
N/A
app pub date -
Sep 21, 1981
filing date -
Sep 21, 1981
priority date (Note) -
Expired
status (Latency Note)
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Abstract
An electrical probe having a spring loaded moving contact in which a compression spring and the inner end of the contact are confined within a tubular member. Low resistance is maintained between the moving contact and the tubular member by applying a lubricant to the coil spring. The lubricant is a synthetic grease having a synthetic oil base and a lithium hydroxy stearate mixed in the oil base. Because of the high viscosity and high shear strength of the lubricant, it prevents the buildup of particulate matter which tends to increase the resistivity of the sliding interface between the contact and the tubular member.
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