Abstract: Effective, easily manufactured seals for dispensing closures in which a spout is rotatably mounted on a cap can be created using an edge on an external surface of the cap to engage an end of the spout. This edge serves to create a seal. The end of the spout and the external surface adjacent to the edge have related cross-sectional configurations such that in all positions of the spout the end engages the edge in the same manner so as to form a seal.

Abstract: A complete closure including a closure member formed as a bottle cap or integrally with a container and lid connected to the closure member by a hinge or hinge-type structure may be constructed so as to utilize a spring structure and a cam structure serving to cooperate to hold the lid in either a closed position in which the lid covers an opening through the closure member or an open position in which the lid is spaced significantly from the opening. Preferably the complete closure is formed as an integral unit out of a polymer such as polypropylene in such a manner that the spring structure consists of upstanding resilient posts on the top of the closure member and so that the cam structure consists of substantially non-bending or rigid portions of the lid which are located so as to contact and deform the posts during movement of the lid.

Abstract: A dispensing closure can be constructed utilizing a washer spring around an opening through the cap of such a closure so as to resiliently bias a sealing surface carried by the washer spring against the spout of such a closure.

Abstract: It is known to manufacture closure structures so that each of such structures has a cap part including two spaced, aligned bearings and a movable part extending between the bearings and including trunnions fitting within the bearings. At least one of the parts of such closure structures is formed of a material which is sufficiently resilient so that the trunnions may be snapped into the bearings during the assembly of the closure structure. Such a closure structure may be improved so as to reduce damage to one or both of the parts during the manufacture of such a closure structure by shaping the trunnions and the bearings so that they both have shapes of surfaces of revolution which decrease in diameter in accordance with the distance from the portion of the movable part fitting within and between the spaced bearings. The entrances employed should also decrease in width in a corresponding manner.

Abstract: A dispensing closure having a cap with an opening extending through the top of the cap and having a lid mounted on the cap so that it is capable of being moved between a closed position in which the lid closes off the opening and an open position in which the opening is exposed can be constructed so as to utilize a spring mounting the lid on the cap. One of the ends of the spring employed is secured to the cap so that the spring is incapable of being pivoted relative to the cap while the other of the ends of the spring is pivotally connected to the lid. The spring is connected to the lid at a location such that the spring has to be bent and such that the lid has to be pivoted relative to the spring in order for the lid to be moved between the noted open and closed position. The spring serves to hold the lid relative to the top of the cap so that the lid is held against movement in the open position by the spring.

Abstract: A closure for use in dispensing a spray of liquid and air can be constructed so as to utilize a cap and a spout rotatably mounted on the cap so as to be capable of being moved between open and closed positions. An air-liquid mixing chamber is located within the spout adjacent to the discharge end of the spout and an orifice is provided on the discharge end of the spout so as to lead from the mixing chamber. A liquid passage and at least one gas passage are provided in the cap and in the spout for conveying liquid and gas into the mixing chamber. A tube extends downwardly from the cap so as to be capable of conveying a liquid to the liquid passage.

Abstract: A "toggle" type dispensing closure can be constructed so as to utilize a first closure part such as a cap or the top of a container upon which there is pivotally mounted a second closure part such as a lid so that the second closure part may be pivoted between a closed position in which an opening through the first part is closed off and an open position in which material may be moved through the opening. With such a closure one end of a spring is pivotally connected to the first closure part and the other end of the spring is pivotally connected to the other closure part. The spring is connected to these two parts at spaced locations such that the distance between the ends of the spring is decreased as the second closure part is moved between these positions.

Abstract: A dispensing closure having a cap adapted to be mounted upon a container and a spout mounted on the cap so as to be capable of being moved between an open and closed position can be made child resistant through the use of an engagement structure on the spout such as, for example, a notch in the base of the spout located so that a vertically directed force exerting against the engagement structure will not tend to move the spout from the closed position. The cap and the spout employed should be dimensioned so that the spout is incapable of being manually engaged so as to be manipulated when in the closed position.

Abstract: It is possible to provide a dispensing closure which is tamper evident by using a relatively flexible strap connecting the movable end of a spout as conventionally used in such a closure with a cap or cap body employed in such a closure. The use of such a strap makes it possible to mold the spout and the cap as a unitary article. The assembly of a dispensing closure from such an article avoids the possible problem of a "wrong" spout being assembled with a specific cap or cap body. The strap employed should not extend from the cap so as to interfere with the use of conventional capping apparatus. The strap used can be shaped and dimensioned to facilitate location of the spout during the assembly of the spout on the cap or cap body and, if desired, as a cover for the passage in the spout when the spout is assembled in an operative position.

Abstract: A dispensing type container closure having a lid pivotally mounted on the closure so as to be capable of being moved between a closed position in which the lid closes off an opening through the top of the container and an open position in which this opening is uncovered can be made child resistant in character by including a recess in the top of the closure into which the lid is adapted to fit so that in the closed position the lid cannot be manually engaged to be rotated from the closed position. A fulcrum is provided within the recess and the lid is made so that when the lid is in the closed position pressure can be applied to the lid in order to pivot or move a portion of the lid remote from where the lid is hinged on the closure to a sufficient extent so that this portion of the lid can be manually engaged and moved from the closed position. Preferably a toggle structure is employed to connect the lid and the closure so as to hold the lid in either the closed or the open position.

Abstract: A safety-type dispensing closure can be constructed using a spout rotatably mounted on a closure body so that it is capable of being rotated between open and closed positions and using a retainer movably mounted on the retainer body. The retainer used in such a closure is capable of being moved to a position in which it does not interfere with spout rotation between the two positions specified and to other positions in which it blocks such movement. The retainer used is preferably a ring rotatably mounted on the closure body so as to be conveniently accessible and so as to appear as a part of the body.

Abstract: A conventional, relatively soft plastic bottle having a generally cylindrical threaded container neck such as a common polyethylene bottle may be used with a specially formed closure and a fitment as a child resistant container. The closure includes internal ratchets adjacent to the bottom of the skirt which are adapted to coact with corresponding ratchets on the fitment so as to prevent the closure from being unthreaded from the container neck. The fitment engages the container and/or the container neck in such a manner as to lock the fitment against rotation. Preferably the fitment is formed so that it can be moved along the container neck to an operative position in which there is such engagement with the container and/or container neck as the closure is threaded on the container neck.

Abstract: A dispensing closure having a cap adapted to be secured to a container so that it is substantially impossible to remove the cap from the container and having a spout rotatably mounted on the cap so as to be capable of being rotated between a closed position in which the spout covers an opening through the cap and an opened position in which the spout is in alignment with the opening can be easily modified so as to render the closure child resistant in character. The modification involves shaping the cap and the spout so that only the tip of the spout can be engaged to rotate the spout when the spout is in the closed position. The modification also involves forming a wall structure on the cap so as to define a slot, this slot being positioned so that the tip of the spout fits within it and is spaced from the bottom of the slot when the spout is in the closed position.

Abstract: A child resistant dispensing closure can be constructed by modifying a known type of cap and a known type of spout so that the spout fits entirely within an elongated groove in the cap when the spout is in a closed position. When the spout is in such a position the end of the spout which is normally engaged to move the spout between opened and closed positions is located within this groove in the top of the cap facing the interior of a part of the skirt. This part of the skirt is preferably separated from the remainder of the skirt by slits leading from the top of the cap along opposed sides of the part. This part is capable of being temporarily distended by manual manipulation so as to permit spout movement. Preferably such spout movement is initiated by applying pressure to a portion of the spout remote from the noted end of the spout.