Apparauts for coating fasteners

Coating apparatus – Projection or spray type – Rotating work

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Details

118416, 427425, 427426, 427242, B05B 1304, B05C 500

Patent

active

053933460

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.

REFERENCES:
patent: 3416492 (1968-12-01), Greenleaf
patent: 4056644 (1977-11-01), Howard et al.
patent: 4725446 (1988-02-01), Forster et al.
patent: 4773244 (1988-09-01), Honda et al.
patent: 4888214 (1989-12-01), Duffy et al.
patent: 5090355 (1992-02-01), Di Maio et al.

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