Patent EA-000390-B1 (EA)
Title: Plastic safety stopper
IPC: B65D47/30
Filed: 1997-02-03
Abstract: 1. Plastic safety stopper, characterized in that the head (K) of the unit, appropriately equipped with an outflow opening (H) has also been provided with two arms (E1) and (E2) stemming out and further connected to a presser (O). Together the arms (E1), (E2) and the presser (O) constitute the operation mechanism. The presser (O) is connected to slide cover (F) by a membrane (M) in such a way as to allow the slide cover to rotate around the membrane and fasten into guides (D1) and (D2), projections (Z1) and (Z2) shall on their port, fit into grooves (T1) and (T2) in such a way as to cover opening (H) of the head (K) of the stopper. On the slide cover, the groove (A) and the projection (SI) have been positioned in such a way that when the presser (O) is pushed the slide cover (F) slides along through guides (D1) and (D2) eventually reaching a point where projection (SI) becomes adjacent to the head of the stopper (K) whereas groove (A) is simultaneously on the top of outflow opening (H) of the stopper, allowing the outflow of the contents of the container. The outflow of the contents through opening (H) whose size and shape is in proportion with the desirable amount of the outflow rate and supply of the contents of the container but in any case smaller or equal to the diameter of the groove (A) is obtained and maintained for as long as pressure is exercised upon the presser (O) Arms (E1) and (E2) elasticity distorted by the pressure exercised upon the presser (O) tend to restore the slide cover (F) in its original position and cover the opening (H) of the slide cover which is what eventually happens as soon as pressure is no more exercised to the presser (O). Projections (S2) and (S3) of the slide cover (F) are meant to determine the terminal position of the latter when it moves backwards subject to the effect of arms (El) and (E2). The head of the stopper (K) with the operation mechanism (El,E2, 0) and the slide cover (F) is a single inseparable compact unit. 2. Plastic safety stopper according to Claim 1, the main feature of which is that the slide cover (F) is a separate part of it, not integrated to the unit comprising the head (K) and its operation mechanism (E1, E2, O). The slide cover (F) has been arranged on the head of the unit in such a way as to allow for the projections (Z1') and (Z2') of the presser (O) to fit and fasten into the grooves (T1') and (T2') of the slide cover (F), whereas the latter fastens into and is allowed to slide along, through guides (D1) and (D2) 3. A plastic safety stopper according to Claims 1 and 2 the main feature of which is that its operation relies upon several slide covers moving to the same or to different directions. 4. Plastic safety stopper according to Claims 1, 2 and 3, the main feature of which is that projection (S4) on the slide cover (F) has been arranged in such a way as to combine with cavity (S5) on the head (K) thus, as the slide cover (F) slides along through guides (D1) and (D2) the projection (S4) covering the outflow opening (H) slides into the cavity (S5) defining the limits of slide cover's course. 5. Plastic safety stopper according to Claim 1 above, the main feature of which is that when sliding horizontally, the slide cover (F) causes the nozzle (B) to rotate in such a way as to allow for an outflow of the contains of the container that is oblique to the vertical axis passing through the center of the container or the stopper. The nozzle (B) has been arranged with a two-side opening (H') starting from the drum (P) and ending up to the upper part. The size and the shape of such opening is proportionate to the flow and dispense rate and is relatively proportionate to the size and shape of opening (H). Cylinders (R1) and (R2) of the movable nozzle (B) are made to fasten into cylindrical grooves (R1') and (R2') of head (K) resulting that the nozzle (B) rotates around the axis (ZZ'} which passes through their centre whilst the drum (P) comes to fasten into the corresponding groove upon head (K). The rotation of movable nozzle (B) occurs when pressure is exercised upon the presser (0) which has been connected to slide cover (F). As the slide cover (F) slides on. projections (F1) and (F2) meet then eventually push forward the surfaces (B2) of the movable nozzle (B). The movable nozzle (B) forced once such rotation has started and the nozzle is brought up to a certain angle, then the outflow opening (H) of the head (K) is disengaged from opening (H'). allowing the contains of the recipient to outflow. Maximum flow rates are obtained as soon as outflow opening (H') is brought over opening (H). This happens when the projecting part of the drum (P) upon movable nozzle (B) (which has already rotated) becomes adjacent to the surface of the head (K). Once pressure upon the presser ceases, the rear part of projections (F1) and (F2) becomes adjacent to surface (B3) setting once again the nozzle (B) to rotate around the axis (ZZ') although to an adverse course, so that the drum (P) is brought to cover the outflow opening (H) of the head (K) of the stopper. On its part the movable nozzle (B) is brought back to its original position which may be the one in which the rear part of the projection of drum (P) upon movable nozzle (B) touches the surface of head (K). With movable nozzle (B) in such a position, the slide cover may continue to move backwards on an additional safety course further to the one normally made by the slide cover until opening (H) meets opening (H'). In such case, projections (F1) and (F2) slide upon surfaces (B1) of drum (P) of nozzle (B) in such a way as to obtain due closing, since under the circumstances, the only way possible for movable nozzle (B) to turn is to exercise pressure upon the presser.