Patent ID: 8317422

Claim:
A fluid dispenser ( 1 ), comprising: a hermetic casing ( 2 ) suitable for containing the fluid to be dispensed, said casing comprising two parts ( 10 , 20 ) connected together in a fluid-tight manner along a peripheral joint plane ( 5 ) and having a form and dimensions such that the casing can be held between a user's hands while the hands are being washed, at least one closing element ( 31 ) mounted on the casing ( 2 ) and being movable between a rest position in which the closing element ( 31 ) prevents a release of the fluid from the casing and an active position in which the closing element ( 31 ) allows the release of the fluid when the user presses his hands against the closing element ( 31 ) during washing, the closing element ( 31 ) being located on at least part ( 10 ; 20 ) of the casing ( 2 ) and protruding locally from an external surface ( 11 ; 21 ) of the casing ( 2 ), and the at least one closing element ( 31 ) engaging tightly in an outlet orifice ( 12 ) in a wall of the casing ( 2 ), said closing element ( 31 ) being movable axially from a state where the closing element ( 31 ) blocks the fluid to a state for dispensing the fluid, the outlet orifice ( 12 ) having a peripheral surface ( 13 ) with a conical cross section narrowing from an interior of the casing toward the external surface ( 11 ; 21 ) of the casing ( 2 ), the closing element ( 31 ) having a complementary form to the peripheral surface of the outlet orifice so that fluid-tightness is provided in the blocking state, the closing element ( 31 ) comprising a ball ( 39 ) with a first part ( 39 a ) resting against the peripheral surface ( 13 ) of the outlet orifice ( 12 ) and a second part ( 39 b ) resting on a hemispherical portion ( 92 ) of a hollow piston ( 90 ) with an orifice ( 92 ) extending through the hemispherical portion ( 92 ), the hollow piston ( 90 ) slidably surrounding a socket ( 60 ) protruding from an internal surface of the casing ( 2 ) opposite the outlet orifice ( 12 ), a compression spring ( 34 ) housed in a centered manner in the socket ( 60 ), the spring ( 34 ) exerting an axial pressure on the hollow piston ( 90 ) to press the ball ( 39 ) against the peripheral surface ( 13 ) of the outlet orifice ( 12 ).