Adjustable drill stand assembly for drilling overhead concrete o

Details Adjustable drill stand assembly for drilling overhead concrete o Adjustable drill stand assembly for drilling overhead concrete o

1999-01-28

2000-08-01

Howell, Daniel W.

Cutting by use of rotating axially moving tool

Means to drive tool

Including means to move tool along tool-axis

408234, 408712, B23B 4514

Patent

active

060957247

ABSTRACT:
An improved drill stand assembly for supporting a power drill in an elevated and inverted position and for advancing and retracting the drill towards and away from an overhead work surface without regard to angular displacement of the drill bit, the drill stand assembly including a measuring gauge and a measuring gauge locking device, an inner tubular column slidably located within an outer tubular column on which the drill is mounted, a lever pivotally connected at a pivot point to an outer column support collar, a linkage pivotally connected at its upper end to a pivot point on the lever and pivotally connected at its lower end to a pivot point attachment mechanism comprising a releasable locking clamp in cooperative relation with a locking compression collar that are slidably located on the inner column.

REFERENCES:
patent: 2405110 (1946-08-01), Bullock
patent: 4235565 (1980-11-01), Albano
patent: 4442905 (1984-04-01), Agoston
patent: 4736804 (1988-04-01), Geibel
patent: 4740119 (1988-04-01), Lierz
patent: 5295620 (1994-03-01), Cousineau et al.
patent: 5322397 (1994-06-01), Spear
patent: 5342153 (1994-08-01), Dobkins
patent: 5348428 (1994-09-01), Turner
patent: 5820317 (1998-10-01), Van Troba

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