VEHICLE FUEL TANK FILLING UNIT Russian patent published in 1995 - IPC

FIELD: transport engineering. SUBSTANCE: filling unit of vehicle fuel tank has threaded plug 1 with sealing ring 2 and filler neck 3 made in form of ring projection. Fitted on projection is shell 7 with sealed conical surface 4 and threaded portion mating with threaded portion of plug. Unit has also space 12 formed by wall of fuel tank 6, filler neck 3 and shell 7. Space is connected through drain channels 11 with space of shell 7. Ring projection of filler neck 3 is made in form of conical bushing whose inner surface 8 comes in contact with mating part of shell 7. Made on shell 7 are stampings which form, together with surface 8 of bushing, drain channel 11. Drain channels are twisted relative to filler neck axis. EFFECT: enhanced quality. 3 cl, 6 dwg