Multiple bit power drill

Details Multiple bit power drill Multiple bit power drill

1993-08-12

1994-09-13

Howell, Daniel W.

Tool changing

Process

279902, 408 1R, 408 35, 483 51, B23Q 3157, B23B 4500

Patent

active

053464532

ABSTRACT:
Disclosed is a portable electric power drill having a rotatable cylindrical magazine within the drill housing for storing a tool bit element in each of its plural bores, the magazine being rotatable to bring a selected magazine bore in alignment with the central bore of a chuck assembly at the front of the drill. A flexible cable is slidable by hand between forward and rearward positions to eject a tool bit element from the magazine to the chuck and to return a tool bit from the chuck to the magazine, and the drill includes mechanism to allow the chuck to be tightened and loosened without the use of a chuck key, or without having to otherwise manually grasp the chuck or associated rotatable parts.

REFERENCES:
patent: 1022711 (1912-04-01), Sweet
patent: 2679770 (1954-06-01), Carter et al.
patent: 4536113 (1985-08-01), Hatfield
patent: 4604005 (1986-08-01), Russ
patent: 4928381 (1990-05-01), Yaguchi et al.
patent: 5022131 (1991-06-01), Hobbs
patent: 5065498 (1991-11-01), McKenzie

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