Mercury slip rings and method

Details Mercury slip rings and method Mercury slip rings and method

1980-05-14

1984-11-27

Desmond, Eugene F.

Geometrical instruments

339 8L, H01R 3930

Patent

active

044847890

ABSTRACT:
The invention comprises apparatus and a method for establishing electrical connections between stationary and rotating circuitry means of a device via a fluid mercury medium which avoids all previous dangers associated with the use of mercury and mercury vapors, and realizes constant low resistance, reliable, and long lived connections. Liquid mercury is enclosed within a cavity and/or capsule within the device during shipping and storage, and only liberated upon intentional release when activating the device. Sealing of the device against fluid escape employs the use of minimal possible escape paths, machined surfaces and pressure forcing contacting surfaces together. These possible escape paths include a material which will decontaminate the mercury by amalgamation upon contact. A further cavity or capsule in the device contains sufficient decontamination material as to render all of the mercury harmless and is intentionally released prior to disassembly or repair of the device. These many features insure environmental protection.

REFERENCES:
patent: 3127230 (1964-03-01), Marquis et al.
patent: 3431532 (1969-03-01), Cary

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