Low resistance electrical spring probe

Details Low resistance electrical spring probe Low resistance electrical spring probe

1981-09-21

1984-07-24

Levy, Stewart J.

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

With rotor

324 725, 324158F, 339108TP, 339255R, G01R 106, G01R 3102, H01H 106

Patent

active

044619936

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.

REFERENCES:
patent: 3435168 (1969-03-01), Cooney
patent: 4050762 (1977-09-01), Hines et al.
patent: 4105970 (1978-08-01), Katz
patent: 4321532 (1982-03-01), Luna
R. M. Morton, "High Performance AC Chip Contactor", IBM Tech. Disc. Bulletin, vol. 18, No. 3, Aug. 1975, pp. 749-750.

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