초록 ▼

A cap assembly (4) for a filler neck, especially of a motor vehicle fuel tank, with a somewhat pot-shaped insert (7) insertable to form a seal for the end of the filler neck (1), having projections (6) at its outer periphery engaging in bayonet or threaded grooves (5) in the filler neck and covered

A cap assembly (4) for a filler neck, especially of a motor vehicle fuel tank, with a somewhat pot-shaped insert (7) insertable to form a seal for the end of the filler neck (1), having projections (6) at its outer periphery engaging in bayonet or threaded grooves (5) in the filler neck and covered at its upper end projecting from the filler neck by a cap (8), and fitted with an over/underpressure valve (11) which acts via apertures (35, 39) in the base of the insert (7) and in its upper end and/or in the cap (8) between the inside of the filler neck and the atmosphere. The entire insert (7) is pressed from sheet steel and the over/underpressure valve (11) is encapsulated in a valve housing (12) fitted in the insert (7) and having a peripheral flange secured by the folded edge (14) of the insert (7).

대표청구항 ▼

[ We claim:] [1.] A filler neck cap assembly comprising:an insert sealingly insertable into a filler neck of a fuel tank, the insert having an enclosed bottom and sides, and with its top having an opening therein surrounded by a rim;a top cap coupled to the top of the insert, the top cap and insert

[ We claim:] [1.] A filler neck cap assembly comprising:an insert sealingly insertable into a filler neck of a fuel tank, the insert having an enclosed bottom and sides, and with its top having an opening therein surrounded by a rim;a top cap coupled to the top of the insert, the top cap and insert defining a space therebetween; anda self-contained valve housing enclosing a pressure vacuum relief valve, the self-contained valve housing being accommodated in said space and having a circumferential flange;said rim being bendable between a first position in engagement with said circumferential flange to secure said self-contained valve housing to the insert, and a second position in disengagement from said circumferential flange to release said self-contained valve housing from said insert for removal thereof from said space.