Patent ID: 7281674

Claim:
A push-button of a sprayer with a lateral spraying outlet, said push-button comprising: a moulded outer part having a longitudinal axis and a tilted inner face angled in relation to the longitudinal axis of the outer part, the tilted inner face of said outer part having a cavity formed therein and having an ejection conduit that extends through a wall of said outer part from a centre of the cavity; a moulded inner part having a longitudinal axis and a tilted outer face angled in relation to the longitudinal axis of the inner part, said inner part being fitted within said outer part such that said outer part and said inner part are coaxial, and such that the tilted inner face of said outer part and the tilted outer face of said inner part are applied against one another; wherein the tilted inner face of said outer part, the cavity formed in the tilted inner face of said outer part and the tilted outer face of said inner part at least partially define a whirl chamber with a peripheral intake and a central outlet in fluid communication with the ejection conduit; wherein the tilted inner face of said outer part and the tilted outer face of said inner part are oriented in a direction and at a sufficient angle so that said outer part is removable from a mould used to form said outer part along the longitudinal axis of said outer part without damaging the cavity formed in the tilted inner face of said outer part; and wherein the cavity formed in the tilted inner face of said outer part comprises: a hollow section with a circular outline centred on the ejection conduit; two grooves, each of the grooves extending longitudinally within a plane substantially parallel to the longitudinal axis of said outer part and along the tilted inner face of said outer part, with one groove disposed on either side of the hollow section; and channels extending annularly respectively between the hollow section and each groove, and opening substantially tangentially into the hollow section, each channel comprising two sides defining a V-shaped cross-section, one of the sides of each channel extending substantially perpendicular to the longitudinal axis of said outer part and the other of the sides of each channel extending substantially along a cylindrical surface centred on the longitudinal axis of said outer part.