Patent ID: 6443373
Filing Date: 2002-09-03
Classification: B05B,Y10S

Abstract:
A Flexible outlet channel stopper membrane adaptable to existing spraying nozzles of the kind comprising an outlet nozzle with a front plate with an outlet orifice in communication with an outlet delivery line, said plate having in its inner face collecting grooves of the outlet vortex of the impelled fluid, the plate being retained by an insert which laterally describes at least one passage for the fluid contained in a container to which said construction is attached, having said insert a foremost surface abutting against the inner surface of said front plate and providing the laterally closing wall of said groove, defining a channel for said fluid in communication with said passage, said membrane comprisingan elastically flexible, compressible resilient material insertably retained between said inside surface of said plate and the opposite surface of the insert face; an annular outer portion that is initially flat; a projection at its centre portion in bell-shaped dome form at its active surface which abuts against the inside surface of the central plate, said membrane forming a supplementary recess in its opposite surface and said insert front surface; an annular hermetic seal enclosing a small air chamber, said air chamber being deformable under pressure by the deformation of said membrane; said projecting dome at the centre portion of the membrane being seated against the inside walls of the outlet orifice in the plate, describing an annular seal against said walls of said outlet channel, said projecting dome selectively displaced by the pressure of the incident contents against the active surface of the membrane; said sealed chamber increases its compression ratio when deformed by the incident fluid under pressure, providing part of the return force of said dome shape central part of the membrane against the outlet orifice; establishing the deformation of said membrane a space free from interference between the membrane and said outlet orifice.