Dispensing – With discharge assistant – Motor operated
Patent
1994-07-18
1995-09-19
Shaver, Kevin P.
Dispensing
With discharge assistant
Motor operated
222390, 744748R, G01F 1100
Patent
active
054509882
ABSTRACT:
A cordless electric powered caulking gun for pressurizing a tube of highly viscous substance includes a ball drive rod having a helical thread and a keyway, an electric motor and gear reducer coupled to a spur gear keyed to the ball drive rod, a cylindrical ball retainer having a plurality of pockets located on a helical locus aligned with the helical thread, a plurality of balls with one ball in each pocket of the retainer, a ball drive nut telescoped over and selectively axially moveable between a first and second position with respect to the ball retainer, and a trigger coupled to the ball drive nut via a spring to urge the nut from the first position to the second position when the trigger is actuated. The trigger further has a bearing surface and axial contact with the ball drive nut to force the nut to the first position when the trigger is released to a deactuated position. The ball drive nut holds the balls in engagement with the rod when the nut is in the second position and lightly holds the balls in engagement with the rod when the nut is in the first position, but permits the disengagement of the balls with the rod when the rod is moved manually.
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Article 909 ASSE Powered Caulking Gun Operating Instructions (Best available copy) 2 pages.
AEG Rechargeable variable speed Cordless Caulking Gun EZ581 Operating Instructions 7 sheets, (10 original pages+cover+parts list+exploded view).
Shaver Kevin P.
Wagner Spray Tech Corporation
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