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US 4,736,804 AGranted
Overhead drill jig
OwnerJeffrey B. Geibelinventor
Life of this patent
Estimating the term…
Abstract
An adjustable drill jig for drilling holes in an overhead work surface such as a ceiling by an operator standing on the floor. The device is portable and easily moved from one work area to another by one person. It may readily be adjusted from the floor to accommodate ceilings of different heights; to vary the depth of penetration by the drill; and to control the application of power to the drill.
Claims10
An adjustable jig for drilling holes in an overhead work surface such as a ceiling and comprising, in combination:
- (a) a base positionable on a fixed support surface such as a floor;
- (b) an upstanding column pivotally attached to said base;
- (c) a drill control mounted on said column;
- (d) a first strut slidably attached to said column in overlapping relation therewith for movement along a common longitudinal plane therebetween;
- (e) a second strut slidably attached to said first strut in overlapping relation therewith;
- (f) means for adjustably locking said first and second struts together against relative sliding movement when in a selected position of longitudinal overlap;
- (g) means for adjustably securing a power drill to the upper end portion of said second strut with the drill bit projecting beyond said upper end portion of the latter;
- (h) toggle link means actuated by an operator on said fixed support surface for bodily elevating said struts and said drill in unison along said common longitudinal plane relative to said column to cause said drill to penetrate said overhead work surface;
- and
- (i) means for adjustably setting the depth of drill penetration into said overhead work surface.
7 more elements
An adjustable jig for drilling holes in an overhead work surface such as a ceiling and comprising, in combination:
- (a) a base positionable on a fixed support surface such as a floor;
- (b) a column attached to said base;
- (c) a first strut slidably attached to said column in overlapping relation therewith for movement along a common longitudinal plane therebetween;
- (d) a second strut slidably attached to said first strut in overlapping relation therewith;
- (e) means for locking said first and second struts together against relative sliding movement when in a desired position of overlap;
- (f) means for adjustably securing a power drill to the upper end portion of said second strut;
- (g) toggle link means actuated by an operator on said fixed support surface for bodily elevating said struts and said drill in unison along said common longitudinal plane relative to said column to cause said drill to penetrate said overhead work surface;
- and
- (h) said toggle link means including a foot operated lever pivotally mounted on said base and a link pivotally connected to said lever and to said first strut.
6 more elements
Dependencies are inferred from the claim text.