Apparauts for coating fasteners
AssigneeThe Magni Group, Inc.
InventorRandall B. Cholewa
Life of this patent
Estimating the term…
Abstract
A method and apparatus for applying a liquid coating which can be cured to a dry film to a plurality of fasteners each with a blind recess therein without accumulating excessive coating in the blined recesses. The fasteners are received in a cage with a cylindrical sidewall which is rotated with its axis inclined at an acute included angle of about 25.degree. to 65.degree. to the vertical and a speed of 1 to 30 rpm to circulate the fasteners while the liquid coating is sprayed onto the fasteners in the rotating cage. The fasteners with a liquid coating thereon are heated to a temperature of about 325.degree. F. to 425.degree. F. for 10 to 30 minutes to cure the coating to a dry film adhered to each fastener.
Claims7
An apparatus for applying a liquid coating on fasteners with an internal blind recess, comprising, a base, a turntable pivotally carried by said base and constructed and arranged to receive a hollow cage with a generally cylindrical side wall for rotating the cage about the axis of its side wall, a drive operably connected with said turntable for rotating it, an actuator operably connected with said turntable for pivotally moving said turntable to a first position wherein the axis of rotation of a cage carried by said turntable extends generally vertically and to a second position wherein such axis of rotation is inclined at an acute included angle to the vertical in the range of about 25.degree. to 65.degree., and a spray gun for liquid coating constructed and arranged when in use to spray liquid coating into a cage carried and rotated by the turntable and onto circulating fasteners received therein when the cage and said turntable are disposed in the second position thereof and are being rotated by said drive.
The apparatus of claim 19 wherein said spray gun discharges liquid coating at the rate by volume of about 1500 to 3000 milliliters per hour.
Dependencies are inferred from the claim text.