Importance

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Abstract

Double-ended, hollow core socket wrenches, tooled for either an English or metric size nut and bolt engaging means in one socket cavity and tooled for either the closest English or closest metric equivalent size nut and bolt engaging means in the opposite socket cavity, are designed to engage and turn hexagonal nuts on protruding bolt studs. The first type of double-ended socket has an axially central external hexagonal surface drive engaging portion, raised from its' substantially cylindrical shell portion, so that it can can be driven externally with a single-ended socket wrench drive member, while the second type of double-ended socket, designed with the same outer drive mechanism described for the first type, has in addition, an internal axially central square drive well engaging portion, accessible from either open socket end, by a conventional extension drive rod member. Whereas, the first type of double-ended socket is designed to engage smaller sizes of nuts and bolts, the second type of double-ended socket is designed to engage larger sizes of nuts and bolts. A combination of both types of double-ended socket wrenches, provides a complete set of hand tools that will engage a full range of small and large English and metric size fittings of regular depth hexagonal nuts and bolts and deep well hexagonal nuts on protruding bolt studs.

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First Claim