초록 ▼

The invention relates to a precision cover (1) with a spout (5) for closing a container of liquid or particulate product of the type in which the top of the cover forms a spout (5) with a sliding seal (2) that is acted upon by a spring (4) and whose motion is controlled by a pivoting opening lever (

The invention relates to a precision cover (1) with a spout (5) for closing a container of liquid or particulate product of the type in which the top of the cover forms a spout (5) with a sliding seal (2) that is acted upon by a spring (4) and whose motion is controlled by a pivoting opening lever (3). This cover (1) is characterized in that the pivoting opening lever (3) controls at least two different modes of operation of the sliding seal (2), one in which, for a given angular shift of the control lever (3), the seal (2) is moved by a low value relative to the opening of the spout (5), and the other in which, for the same angular shift of the control lever (3), the sliding seal (2) is moved by a higher value relative to the opening of the spout (5) so as to allow the operator to meter the flow rate of the container's contents with very high precision in the first mode and with a high value of opening in the second mode.

대표청구항 ▼

The invention claimed is: 1. A precision cover (1) for closing a container of liquid or particulate product, wherein a top of the cover (1) forms a spout (5) with a sliding seal (2) configured to slide against the spout (5) and connected to a spring (4), a sliding motion of the sliding seal (2) aga

The invention claimed is: 1. A precision cover (1) for closing a container of liquid or particulate product, wherein a top of the cover (1) forms a spout (5) with a sliding seal (2) configured to slide against the spout (5) and connected to a spring (4), a sliding motion of the sliding seal (2) against the spout (5) controlled by a pivoting opening lever (3), wherein the pivoting opening lever (3), in a first mode, controls the sliding seal (2) such that the sliding seal (2) slides against the spout (5) by a low value (a) relative to an opening of the spout (5) via an angular shift (α) of the pivoting opening lever (3) so as to enable an operator to meter a flow rate of contents of the container with very high precision, and wherein the pivoting opening lever (3), in a second mode, controls the sliding seal (2) such that the sliding seal (2) slides against the spout (5) by a higher value (b) relative to the opening of the spout (5) via the angular shift (α) of the pivoting opening lever (3) so as to enable an operator to meter a flow rate of the contents of the container with a high value of opening. 2. The precision cover (1) according to claim 1, wherein during a total angular shift of the pivoting opening lever (3), the seal (2) is moved in a first step by the low value (a) to provide a small opening, then, in a second step, by the higher value (b). 3. The precision cover (1) according to claim 1, wherein the pivoting opening lever (3) has two pivots (6, 7) that are separated from one another to create two lever arms (9, 10) of different lengths, wherein a first of the lever arms (9) is short to cause a short movement of the sliding seal (2), and wherein the second of the lever arms (10) is long to cause a long movement of the seal (2). 4. The precision cover (1) according to claim 3, wherein the pivoting opening lever (3) includes a cam (13) between the two pivots (6, 7) configured to operate with a stationary cam groove (14) provided on the precision cover so as to obtain, during a movement of the pivoting opening lever (3), a smooth transition between the two modes of operation. 5. The precision cover (1) according to claim 4, wherein a rack-type set of teeth is provided on the face of the cam (13) of the pivoting opening lever (3) and the stationary cam groove (14) of the cover is configured to prevent any sliding of one part relative to another during the movement of the pivoting opening lever (3) 6. A precision cover (1) for closing a container of liquid or particulate product, comprising: a top portion forming a spout (5); a sliding seal (2) configured slide against the spout (5) of the top portion to reversibly seal the spout (5); a spring (4) connected to the sliding seal (2); and a pivoting opening lever (3) connected to the sliding seal (2) via the spring (4) for actuating the sliding seal (2) on the spout (5), wherein, in a first operational mode of the pivoting opening lever (3), a first angular shift (α) of the pivoting opening lever (3) causes the sliding seal (2) to slide from a closed position on the spout (5) by a first distance having a low value (a) relative to an opening of the spout (5), and wherein, in a second operational mode of the pivoting opening lever (3), a second angular shift (α) of the pivoting opening lever (3), equal in magnitude to the first angular shift (α), causes the sliding seal (2) to slide from the closed position on the spout (5) by a second distance having a higher value (b) relative to the opening of the spout (5), said higher value (b) being greater than said lower value (a). 7. The precision cover (1) according to claim 6, wherein during a total angular shift of the pivoting opening lever (3), the seal (2) is displaced in a first step by the first distance to provide a first small opening, followed by a second step whereupon the seal (2) moves by the second distance. 8. The precision cover (1) according to claim 6, wherein the pivoting opening lever (3) comprises first and second pivots (6, 7), said first and second pivots (6, 7) being spaced apart to create two lever arms (9, 10) of different lengths, wherein the first of the lever arms (9) is shorter than the second of the lever arms (10) such that the first of the lever arms is configured to cause a short first movement of the sliding seal (2), and the second of the lever arms (10) is configured to cause a long second movement of the seal (2), the second movement of the seal (2) being longer than the first movement of the sliding seal (2). 9. The precision cover (1) according to claim 8, further comprising: a stationary cam groove (14); and a cam (13) on the pivoting opening lever and positioned between the two pivots (6, 7) of the pivoting opening lever (3), wherein the cam (13) is configured to operate with the stationary cam groove (14) so as to obtain, during a movement of the pivoting opening lever (3), a smooth transition between the first and second modes of operation. 10. The precision cover (1) according to claim 9, wherein the cam (13) of the pivoting opening lever (3) comprises a face and a rack-type set of teeth on said face, and wherein the stationary cam groove (14) operates with the rack-type set of teeth to prevent any sliding of one part relative to another during the movement of the pivoting opening lever (3).