Patent ID: 6435426
Filing Date: 2002-08-20
Classification: B05B

Abstract:
A leak resistant pressure proof feed cup assembly for a top feed spray gun comprising:a feed cup, a domed lid, and a flat gasket plate, said gasket plate having a center section and a periphery, said center section configured for attaching a vent, pressure feed or check valve fitting, said cup having a lower end configured for attachment to the feed port of said spray gun and an upper end having a cup rim, said gasket plate having an underside gasket configured for uniform fit and vertically compressive sealing contact with said cup rim when centered there on, said lid sized to cover said gasket plate and shaped for contacting the top side of said gasket plate about its said periphery and not contacting said gasket plate at its said center section, said lid and said cup each having respective mating structures by which said lid may be placed in compressive locking attachment to said cup with said gasket plate interspersed under compression there between, said lid having a hole configured for clearance of and access to such said vent, pressure feed or check valve fitting as may be attached to said gasket plate, said respective mating structures comprising said cup configured with external threads and said domed lid configured with a rimmed flange with mating internal threads for rotationally advancing attachment to said cup, said gasket plate being held stationary with respect to said cup by friction between said rim and said gasket while said lid is rotating during said attachment, said rimmed flange configured with an external reinforcing band.