Adapter for battery-powered screwdriver to attach drill chuck

Details Adapter for battery-powered screwdriver to attach drill chuck Adapter for battery-powered screwdriver to attach drill chuck

1990-08-23

1991-05-14

Briggs, William

Cutting by use of rotating axially moving tool

Tool-support

With tool-retaining means

81 54, 279 1A, B23B 3110

Patent

active

050151290

ABSTRACT:
Commercially available battery-powered screwdriver output shafts are round and have hexagonal bores to receive the hexagonal shanks of screwdriver blades. An adapter has one end shaped to receive and engage such an output shaft. The opposite end is externally threaded to receive an internally threaded chuck which holds round shank twist drills. Thus, a power screwdriver may be used as a drill. An optional second adapter having one end shaped hexagonal to receive the screwdriver output shaft and be held in place by a set screw and has its opposite end shaped to be permanently attached to the first-mentioned adapter. This facilitates attaching and detaching the chuck.

REFERENCES:
patent: 2714026 (1955-07-01), Schultz
patent: 3843143 (1974-10-01), Laxson
patent: 4224969 (1980-09-01), Plessner
patent: 4766783 (1988-08-01), Stanich et al.
patent: 4874181 (1989-10-01), Hsu
patent: 4944641 (1990-07-01), Alves

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