Shrouded jaws for hook-on type instruments

Details Shrouded jaws for hook-on type instruments Shrouded jaws for hook-on type instruments

1976-10-04

1978-01-31

Rolinec, Rudolph V.

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

With coupling means

336176, G01R 120, H01F 1706

Patent

active

040718247

ABSTRACT:
A pair of relatively movable, shrouded jaws are provided for a hook-on type measuring instrument to insulate the conductive ends of the jaws from contact with high voltage electrical conductors on which the instrument is periodically clamped during its normal application. The shrouded ends of the jaws are characterized by incorporating cup-shaped insulated recesses within which the uninsulated ends of the soft iron magnetic ends of the jaws are disposed substantially below the outwardly extending lips of the recesses thereby to prevent the iron from being inadvertently placed in contact with a high voltage conductor when the jaws are opened to either place them around such a conductor or to remove them therefrom.

REFERENCES:
patent: 2663845 (1953-12-01), Koch
patent: 2842739 (1958-07-01), Lamb

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