Patent ID: 8528838

Claim:
A push-button for a pressurised liquid distribution system, said push-button comprising a body onto which an end piece is mounted around an insert so as to form a distribution chamber between said end piece and said insert, said distribution chamber being in communication with a supply channel intended to be mounted on a feed tube for the pressurised liquid, said distribution chamber being successively connected to upstream channels, downstream channels and distribution channels, said distribution channels each converging towards one of a plurality of outlet openings while being designed to enable the impaction of the liquid jets dispensed by said outlet openings, the upstream and downstream channels extending longitudinally while forming an upstream and downstream fluid flow section, respectively, in the distribution chamber, said downstream section having an average cross-sectional area of which is less than the average cross-sectional area of the upstream section, characterized in that the upstream and downstream channels are formed at the interface between an interior wall of the end piece and an exterior wall of the insert, a concave impression is formed on at least one of said walls so as to be closed by the other wall while defining said channels, and each wall has at least one bearing surface between which the upstream and downstream channels are formed.