Electric drill with modified bit gripping assembly

Details Electric drill with modified bit gripping assembly Electric drill with modified bit gripping assembly

2008-05-06

2008-05-06

Howell, Daniel W. (Department: 3722)

Cutting by use of rotating axially moving tool

Machine including plural tools

Turret of tools

C173S046000, C173S214000, C007S158000, C408S117000, C408S124000

Reexamination Certificate

active

11313950

ABSTRACT:
An electric drill (10) has a drive assembly (31, 70), and a pivot head (32) having first and second bit gripping assemblies (14, 22) disposed at 90 degrees to each other. The electric drill (10) also includes means for adjusting the position of the bit gripping assemblies (14, 22) relative to the drive assembly (31, 70) by pivoting the head (32) through 90 degrees, whereby a selected one of the bit gripping assemblies is operatively engaged to the drive assembly. The position adjusting means may include a movable locking sleeve (36) which, in a first position, allows the drive assembly to operatively engage the selected bit gripping assembly and, in a second position, allows the drive assembly to disengage the selected bit gripping assembly.

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patent: 6715969 (2004-04-01), Eriksen
patent: 2007/0098507 (2007-05-01), Whitehead
patent: 631615 (1992-12-01), None
patent: 4340740 (1995-06-01), None
patent: 633408 (1949-12-01), None

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