Patent ID: 6860414

Claim:
Device for dispensing and measuring pasty, liquid, semi-liquid or pulverulent products, comprising a body ( 1 ) of the device in which is formed a conduit ( 2 ) for passage of the product from an inlet opening ( 3 ) for the product toward a fitting ( 4 ) for dispensing the product in measured quantities, a valve seat ( 5 ) being formed in said conduit ( 2 ) and a valve ( 6 ) being mounted in said conduit so as to be able to slide and be applied against the valve seat ( 5 ) to prevent the dispensing of the product or to be spaced from said seat ( 5 ) to permit the dispensing of the product, the valve ( 6 ) being provided with a valve stem ( 7 ) mounted slidably in a guide bore ( 7 a ) and coacting with a motor mechanism for actuating the valve ( 6 ) to move it toward and away from the valve seat ( 5 ), the conduit ( 2 ) for passage of the product comprises a rectilinear segment for passage of the product in which segment is disposed the valve seat and through which extend axially and in totality the valve ( 6 ) and the valve stem ( 7 ) and into which segment penetrates at least a portion of the actuating mechanism of the valve, this mechanism being in contact with the product such that the mechanical connection between the valve stem ( 7 ) and the actuating mechanism will also be in contact with the product and will be lubricated by the product itself characterized in that the actuating mechanism for the valve ( 6 ) comprises on the one hand at least one resilient member ( 8 ) acting by pushing on the valve ( 6 ) and urging this latter toward the seat ( 5 ) and hence toward a closed position and on the other hand an actuating rod ( 9 ) guided axially in a bore ( 10 ) of the body of the device, which bore is transverse to the rectilinear segment of the passage conduit and opens into said segment, said rod ( 9 ) coming into contact with the valve stem ( 7 ) to act by pressing this latter, the contact between the valve stem ( 7 ) and the actuating member being established by two sliding surfaces ( 11 , 20 ) of which one ( 11 ) is provided on the valve stem ( 7 ) and the other ( 20 ) on the actuating rod ( 9 ), the two said surfaces ( 11 , 20 ) being located in the rectilinear segment of the passage for the product, and at least one of said surfaces being flat and oblique relative to the geometric axis of movement of the valve ( 6 ) between its open and closed positions and oblique relative to the axis of movement of the actuating rod ( 9 ), such that when the actuating rod ( 9 ) is moved by a motor member ( 9 a ) in the direction of moving into the body of the device, the valve ( 6 ) will be spaced from its seat ( 5 ) under the force of the pressure exerted by the sliding surface of the actuating rod ( 9 ) on the sliding surface of the valve stem ( 7 ).