CLOSED

Abstract

An improved clamp / twist-off cap that is highly durable. The present invention is also directed to a package that includes a cap, for example, a bottle in combination with a cap. The cap includes an upper wall forming an opening and a cylindrical tube for clamping suspended from the upper wall. The tube includes threads designed to mate with external threads on a bottle neck. The threads on the tube and the threads on the bottle neck pass each other when the cap is clamped onto the bottle during manufacture. The tube includes a retaining recess and a guide recess. The retaining recess and the guide recess accommodate a forcing element on a shoulder of the bottle and enable loosening of the cap.

Description

Description CLOSE Invention Engineering Field The present invention relates to an improved snap-on / twist-off closure. In particular, the present invention also relates to a packaging comprising a closure, for example, a bottle in combination with a closure. Background of the Invention Many personal care products are sold in plastic bottles. Examples of such products include body wash and shampoo. While dispensing body wash or hair care products from a bottle is convenient for consumers, plastic bottles are generally discarded after one use and sometimes end up unintentionally in landfills. Although plastic bottles are sometimes recycled, both transporting them to recycling sites and the recycling facilities themselves consume energy. Therefore, it is preferable to reuse packaging rather than discard it after one use. While some commercial bottles currently available are theoretically reusable by consumers, the ease of doing so generally leaves something to be desired. For example, it can be difficult for consumers to remove the cap sufficiently to facilitate access to the bottle body. This presents a significant obstacle to the goal of minimizing plastic use and disposal. Therefore, there is a need for a bottle with a cap that can be easily removed by consumers. Furthermore, it is crucial that consumers can easily and securely reattach the cap to the bottle after refilling the container. Easy consumer access to the bottle's interior is certainly ideal, but the bottle cannot be designed so that the cap can be easily removed. Otherwise, the product will spill out of the container at inopportune times, such as during transportation. Furthermore, the goal of an easily removable cap must be balanced with the competing goals of ensuring ease of placing the cap on the bottle during manufacturing and minimizing production costs. United States Patent No. 8,365,933 by Jackel discloses a closure system that includes a snap-on closure that can be pressed onto a spout wherein two interacting elements slide by or over each other due to their flexibility. The closure can only be removed with difficulty in a purely axial / vertical direction by applying a certain force, but can be removed by a twisting motion that is significantly easier to perform than the axial removal motion. The closure includes a recess in a cylindrical tube for clamping that engages with a forcing element on the shoulder of the container. The sides of the recess are designed so that the slope at a point on one side is less than the slope at the same point on the other side. Brief Description of the Invention The present invention is directed to an improved clamp / twist-off closure that eliminates some of the shortcomings of prior closures. In particular, the closure is highly durable, as demonstrated by industry-standard drop tests. The present invention is also directed to a package comprising the closure, for example, a bottle in combination with the closure. The cap base of the present invention includes a top wall forming an opening and a clamping cylindrical tube suspended from the top wall and extending vertically / axially to a bottom end of the tube. The clamping cylindrical tube includes threads on an inner wall designed to mate with external threads on the neck of the bottle. The cap base is clamped to the neck of the bottle where the threads of the clamping cylindrical tube pass through and are temporarily engaged under the threads of the neck of the container. A cylindrical tube for clamping the cap includes at its lower end at least one retaining recess and at least one guiding recess. The retaining and guiding recesses play a role in loosening the cap so that it can be easily removed for refilling. The retaining recess includes opposing first and second walls formed by the cylindrical tube for clamping and having a slope wherein the slope of one of the walls is smaller at least at one point than the slope of the other wall at a point located at the same axial / vertical height. When the lid is closed, a forcing element of the container is at least partially contained within the retaining recess. The wall of the retaining recess with a greater slope contacts the forcing element, which resists rotation of the lid in one direction (rather than opening / tightening until closed / firmly securing the lid), usually clockwise. When the lid is rotated in the opposite direction, or in the direction of opening / loosening / releasing the lid, contact between the lesser slope of the opposite wall of the retaining recess and the forcing element forces the lid upward slightly. During this initial rotation the internal thread on the clamping cylinder tube maintains its position under the external thread of the neck of the container as the lid moves axially upward relative to the neck of the container. Axial movement is produced by the fact that the threads are angled; the net result of the angular rotational movement is axial movement.Alternatively, the cap may have such a structure that with sufficient axial force, for example, exerted by the consumer, even if during the initial rotation the forcing element is disengaged from the retaining recess, the internal thread on the pipe for clamping may pass through the external thread of the neck of the container to facilitate the removal of the cap. Upon further rotation of the cap in a counterclockwise or loosening / unscrewing direction, the forcing element encounters the trailing end of the retaining recess followed by the lower edge of the clamping tube and then by the guide recess. During rotation of the cap in the loosening / unscrewing direction, the guide recess first extends upward from the lower end to allow the lowering of the clamping tube relative to the neck of the container while the mating threads on the clamping tube of the cap and the neck are in contact with each other. Thereafter, with the threads of the clamping tube and the neck threads still interlocking, when the cap is further rotated in the loosening / unscrewing / unscrewing direction, the guide recess includes a gradual downward slope toward the lower end of the clamping tube. The downward slope of the guide recess, and the resulting relative upward motion of the cap consistent with the slope of the mating threads on the neck and rim, guides and provides minimal resistance to rotation of the cap in the loosening / unscrewing direction. The consumer can continue turning the cap with minimal resistance and thus ultimately remove the cap. The presence of the guide recess also facilitates the reverse process where the consumer turns the cap in the closing direction, generally clockwise, after refilling the bottle. It is believed that without the guide recess, the bottom of the tube to clamp would hinder the engagement of the threads when tightening the cap. The lid may include a closing element that contacts and / or covers the upper wall of the lid base to seal the lid opening, but which can be removed from the opening to dispense the product. Preferably the closing element remains connected to the lid base when removed to dispense the product, for example, by means of a hinge or other additional member. The lower edge of the clamping pipe extending between the retaining recess and the guiding recess is preferably at least 2mm and up to 5mm, especially from 2 to 4mm, in the length where the durability of the cap is maximized, which includes providing a good fit of the cap to the bottle, fitting comfortably and tightly for a long period of use. The cap of the present invention allows for the firm placement of the cap on the neck of the bottle during manufacture but allows for easy removal of the cap from, and reattachment of the cap to, the bottle by the consumer, thereby enabling removal of the cap for refilling the container. The cap is durable, e.g., resistant to wear and tear. It will become clear that changes such as tightening / loosening direction and thread location require adjustments to the location and shape of the retaining recess and guide recess. For a more complete understanding of the above and other features and benefits of the invention, reference should be made to the following complete description of ideal embodiments and to the accompanying drawings. Short Description of Image Figure 1 is a side elevation view of the bottle and cap of the present invention with the cap in cross section. Figure 2 is a front elevation view of a bottle of the present invention with a portion of the neck cut away and showing the cap base thereon in cross section with the cap sleeve removed. Figure 3 is a perspective view from above of a lid according to the present invention in the open position. Figure 4 is a bottom frame view of the lid in Figure 3. Figure 5 is a side elevation of the packaging of the invention with the lid partially rotated in the direction of loosening / opening / releasing the lid and with portions of the lid opened to expose the cylindrical tube for clamping. Figure 6 is a side elevation view of a top portion of a container with portions of the lid removed and with the lid in the tightly closed position. Figure 7 is a side elevation view of the lid with portions exposed. Complete Description of the Invention The cap (22) is mounted on the bottle (20) (Figures 5 and 6). The cap (22) includes a cap base (24) connected to the cap sleeve (26) by a hinge (28), although other possible arrangements will be obvious to those skilled in the art. The cap base (24) includes generally a cylindrical clamping tube (30), best seen in Figures 1 and 2, suspended from the upper wall (25) downwards. The cylindrical clamping tube (30) is positioned to engage with the neck (32) of the bottle (20). The inner wall of the cylindrical clamping tube (30) includes one or more internal threads (34), which project inward. The cap platform (24) includes a dispensing opening (36) located centrally in the top wall (25). Although the opening (36) is illustrated and described as being centrally located, it may be deviated from the center if desired. Structures may be provided above and / or below the opening (36) to assist in pouring or sealing, such as a ring (38). When the cap platform (24) is located on the bottle (20), the opening (36) is in communication with the interior of the bottle (20) through the interior of the clamping pipe (30) and the exterior of the bottom wall of the cap platform (23). The cap sleeve (26) includes a stopper (40) to assist in sealing the cap and thereby sealing the bottle. The neck (32) of the bottle (20) includes an external threaded protrusion (60). As best seen in Figure 5-7, the clamping cylinder tube (30) includes a retaining recess (42) extending upward from the lower end or edge (43). The edge (43) typically extends perpendicular to the axis of the downward extending tube. A second retaining recess (42a) may be present at a distance of 180° from the retaining recess (42), as shown in Figure 1. The retaining recess (42) includes two walls (44, 46) formed in the clamping cylinder tube (30). The shape of the walls (44, 46) will depend on the desired direction of rotation of the cap to loosen it from the bottle so that it can be removed. Typically, the cover can be loosened / opened / removed by turning it counterclockwise, so for the purposes of this description it will be assumed that it is loosened / opened counterclockwise. However, it will be clear that other directions can be used if desired and the shapes of the walls (44, 46) and the location of the guide recesses (70) will be adjusted accordingly. As best seen in Figure 6, when the cap is in the closed position, the retaining recess (42) receives at least a portion of the forcing element (50), which is a protrusion permanently engaged with the bottle shoulder (80). The rear wall of the retaining recess during the loosening / opening rotation, illustrated as (44) in Figure 7, includes at its lower end (45) a slope that is more inclined than the opposite (front) recess wall (46); the slope at the lower end of the retaining recess wall (46) is steeper or steeper. The forcing element (50) also includes two side walls (54, 52) with different inclinations. Starting from the initial closed position as shown in Figure 6, if the lid is rotated clockwise when the consumer rotates it, a steep slope of the side wall of the forcing element (52) faces a steep slope of the retaining recess wall (46) and prevents rotation. On the other hand, on rotation of the lid in the initial closed position in the initial closed position, the side wall (54) of the forcing element having a retaining recess wall with a gentler slope faces the retaining recess wall (44) having a gentler slope in its lower half, for example at (45), close to its base. The effect of this contact between the walls with a gentler slope is that, instead of preventing rotation, which occurs with a steeper slope, the forcing element (50) forces the walls of the retaining recess and the cylindrical pipe to clamp (30) suspended therefrom, upwards. The smaller and gentler slope of the wall (45) (FIG. 7) of the retaining recess wall (44) is similar or equal to the slope of the side wall (54) of the forcing element of the container, which faces the wall of the retaining recess (44) during loosening / opening. The slope of the wall (44) of the portion (45) is in the range of between 10 degrees more and 10 degrees less than the slope of the wall (54). Thus, if the wall (54) is 45 degrees, the wall (44) of the portion (45) is in the range of from 35 degrees to 55 degrees. Each of the walls (44) and (54) is in the range of from 30 to 85 degrees. The slope of the wall (44) of the portion (45) is measured relative to a horizontal line drawn through the edge portion (56).The slope of the wall (54) is measured at the point where it initially contacts the wall (44) during rotation and is measured with respect to a horizontal line intersecting the point of contact with the wall (44), said line being parallel to, or coincident with, the lower edge (56). Counterclockwise rotation of the cap (22) during further removal of the cap by the consumer will result in the forcing element (50) releasing the walls of the retaining recess (44), and the upper part (58) of the forcing element coming into contact with a portion (56) of the lower edge (43) of the cylindrical pipe for clamping. Upon further counterclockwise loosening / unscrewing, rotation of the cap (22), the upper part (58) of the forcing element (50) comes into contact with the guiding recess (70), shown for example, in Figure 7. The guiding recess (70) includes an upwardly extending wall (72) with an inclination in the range of 90 and 135 degrees with respect to a horizontal line drawn through the portion (56) of the lower edge and then a downwardly extending wall (74) with a less steep inclination in the range of 0 to 10 degrees relative to a horizontal line drawn through the intersection (75) of the wall (74) and the lower part of the pipe (43). The distance between the retaining recess (42) and the guide recess (70) is measured along the lower edge portion (56) from the point where the wall (44) mates with the lower end of the clamping pipe or edge (43) to the point where the wall of the guide recess (70) begins to rise at the beginning of the wall (72). The distance between the retaining recess and the guide recess in the loosening / opening direction is preferably at least 3 mm. The distance is generally from 2 mm to 5 mm, especially from 2 mm to 4 mm. The presence of a guide recess in addition to the retaining recess also facilitates the rotation of the lid in the opposite direction to close, which is generally clockwise. When the lid is rotated clockwise to close, at point (75) (FIG. 5), the forcing element (50) encounters a gradually sloping wall (74) of the guide recess (70), then a steeper slope of the descending wall (72), then an edge (43) of the section (56) and finally the retaining recess wall (44) and the steep wall (46). In operation, during packaging manufacture, a cap (22) is clamped onto the neck (32) (e.g., FIG. 2) of a bottle (20) with the cap (22) being pressed axially downwards (or the bottle (20) being pressed axially upwards, or both). Since the bottle body and cap are made of a flexible material and / or since the presence of one or more recesses in the pipe allows the cylindrical pipe for clamping (30), to expand radially by flexure, an internal thread (34) on the cylindrical pipe for clamping passes through an external thread (60) on the neck of the container and the cap is clamped onto the neck. Thus, the cap is firmly attached to the container and a considerable amount of effort is required for the consumer or other external force to separate it using a solely vertical or axial upward movement. Alternatively, the cap (22) may be initially applied to the container (20) by rotation, to engage the threads. In normal use, the product is dispensed with the cover (26) removed from the opening (36). The cover (26) is then closed so that the plug (40) seals the opening when the product is not in use. When the bottle is substantially empty of the shampoo, body wash, lotion or other product originally contained therein, the consumer removes the cap (22) from the packaging to facilitate refilling and reuse. To initiate cap removal, the consumer turns it, usually in a counterclockwise direction, starting from the position shown in Figure 6 wherein the forcing element (50) is at least partially contained in the recess (42). The forcing element (50) pushes the lid (22) upward upon rotation of the lid as described above. The cylindrical pipe thread for clamping (34) maintains its position under the neck thread of the container (60) when the lid is rotated at least until the forcing element reaches a position below the wall of the second guide recess (72), preferably until the forcing element reaches a position beyond the position below the wall of the guide recess. That is, the threads maintain their respective axial positions until the forcing element reaches such a position. The forcing element (50) then contacts a portion (56) of the lower edge (43) of the clamping cylinder tube, then with an upwardly extending wall (72) of the guide recess (70). The guide recess allows the clamping cylinder tube to axially lower it into the neck of the container. The thread of the clamping cylinder tube (34) remains below the thread (60) whereby the consumer can continue using normal rotation to loosen the cap from the neck of the container. Figure 5 shows the forcing element (50) within the recess (70). The loosening rotation may optionally be further facilitated by the upper portion of the forcing element (58) contacting a downwardly extending wall (74) of the guide recess (70). Optionally contact by the upper portion (58) with the downwardly extending wall (74) may lift the clamping cylinder tube from the cap, to facilitate the normal loosening action of the cap, whereby the cap is easily removed.The distance between the threads is equal to the slope of the wall (74). At some point in the rotation to open, preferably after the forcing element is out of position below the second guide recess wall, the thread of the cylindrical clamping pipe may optionally pass through the bottle thread thereby facilitating the removal of the cap. If this occurs, it will typically occur further along in the rotation in the opening direction than the position for the forcing element 50 in Figure 5, e.g. the forcing element 50 will be closer to, preferably outside, point 75. Removal is also facilitated by a gap in the external neck thread and / or the internal clamping pipe thread and the flexible material forming the cap. Alternatively, as mentioned above, the cap may be structured such that when the forcing element is removed from the retaining recess, with sufficient axial force the internal thread in the clamping pipe may pass through the external thread in the neck of the container to facilitate removal of the cap. Once the cap has been removed, the consumer refills the bottle with shampoo or other product. The consumer then reinstalls the cap onto the bottle either by clamping the cap down over the bottle neck in an axial direction similar to that used during manufacturing, or the consumer re-screws the cap onto the bottle neck. If the consumer chooses such a cap, the edge (43) of the clockwise-moving tube (30) optionally contacts the top (58) of the forcing element (50). When the edge (43) reaches point (75) (FIG. 5), the edge (43) encounters a gradually rising wall (74) that allows the tube to lower relative to the bottle neck, consistent with the normal downward screwing of a cap. At this point, the threads engage. The front and / or top wall of the forcing element meets the wall (72) of the guide recess (70) which accommodates the lifting of the pipe (30) relative to the bottle neck (32) and the top (58) of the forcing element (50) optionally comes into contact with a part (56) of the edge (43). After further rotation, the forcing element reaches the wall of the holding recess (44) and the pipe (30) moves down when the forcing element (50) is accommodated in the recess (42). When the consumer turns the cap to close, the internal thread (34) of the pipe (30) maintains its position under the external thread (60) on the bottle neck (32). When the forcing element (52) meets the steep wall (46) of the holding recess (42) the cap cannot be turned further. The cap can be placed on the neck of the container firmly and economically by a purely vertical / axial placement on the bottle during manufacture, while providing the consumer with the possibility of easily turning the cap to remove and reattach it to the bottle, supporting the refilling of the container. The cap (22) can also be applied to the container during manufacture by turning to engage the threads. Reference to the up or down movement here assumes that the container (20) rests on its base (not shown) at its end opposite the lid. The caps can be made of polypropylene, polyethylene, or similar polymer materials, and the bottles can be molded from high-density polyethylene, polypropylene, or PET. The caps are designed to be durable, withstanding normal wear and tear from opening and closing and even from being dropped. Personal care products include products for application to the skin, scalp or mouth, such as shampoo, body wash, skin lotion, and so on. The invention includes the following numbered aspects: 1. A cover that covers a. an upper wall forming an opening; b. a cylindrical pipe for clamping (snap-on) which is suspended from the top wall and extends axially to a bottom end, c. the cylindrical pipe for clamping includes at least one retaining recess at the lower end thereof; d. the cylindrical pipe for clamping further includes at least one thread on an inner wall thereof; e. the cylindrical pipe for clamping forms the first and second opposite walls of the retaining recess; f. the walls of the first and second retaining recesses having a slope where the slope of one of the walls of the first and second retaining recesses is smaller at least at one point than the slope on the other side of the first and second recesses at a point located at the same axial height; and g.The lower end of the clamping cylinder tube is formed to include a guide recess for lowering the clamping cylinder tube thread relative to a neck of a container, the cap being configured such that the guide recess includes a first guide recess wall having an upward slope and a second guide recess wall having a downward slope wherein in the direction of rotation for closing the cap the first guide recess wall allows the clamping cylinder tube to be axially lowered to the neck of the container having a forcing element and the second wall consistent with the clamping cylinder tube of the cap being raised relative to the container and the thread maintaining its axial position relative to a thread on a neck of a bottle where the cap is installed when the forcing element contacts the retaining recess wall with a slight slope at least until the forcing element reaches a position below the second guide recess wall. 2. The lid according to claim 1 further comprising a cover sleeve for closing the opening, the cover sleeve being hingedly attached to the cover base of the lid. 3. The cover according to claim 1 wherein in the direction of rotation to loosen the cover, after encountering the retaining recess the forcing element encounters the first guide recess wall then the second guide recess wall. 4. The closure according to claim 1 wherein when the forcing element reaches a position below the first guide recess wall, the cylindrical pipe thread for clamping and the housing thread maintain their respective relative axial positions with the housing thread above the pipe thread for clamping. 5. A lid according to claim 1 wherein the second retaining recess wall includes a smaller slope and the smaller slope of the second retaining recess wall is from 10 degrees less to 10 degrees more than the slope of a side wall of a forcing element of the container facing the second retaining recess wall during loosening of the lid, and the smaller slope of the second retaining recess wall and the side wall of the forcing element facing the second retaining wall have a slope of between 30 to 85 degrees. 6. A container comprising a combination of a lid and a bottle, comprising a lid and a bottle having a neck and at least one forcing element, I. the lid comprising a) an upper wall forming an opening; b) a cylindrical pipe for clamping which is suspended from the upper wall and extends axially to a lower end, c) the cylindrical pipe for clamping includes at least one retaining recess therein extending to the lower end; d) the cylindrical pipe for clamping further includes one or more threads on an inner wall thereof; e) the cylindrical pipe for clamping forms the first and second opposite walls of the retaining recess; f) the walls of the first and second retaining recesses having a slope where the slope of one of the first and second sides is smaller at least at one point than the slope on the other side of the first and second retaining recesses at a point located at the same axial height; and g) the lower end of the cylindrical pipe for clamping is formed to include a guide recess for lowering and raising the thread of the cylindrical pipe for clamping relative to the neck of the bottle, II. said bottle neck having external threads, at least one bottle forcing element adapted to be at least partially received in a retaining recess of a clamping cylinder pipe of a cap, wherein the guiding recess includes a first wall with an upward inclination and a second wall with a downward inclination wherein in the rotation direction for closing the cap, the first guiding recess wall allows the clamping cylinder pipe to be axially lowered onto the forcing element and the second guiding recess wall consistent with the clamping cylinder pipe to be lifted relative to the closing element, the internal thread of the clamping pipe and the bottle neck thread maintaining their axial position with the bottle neck thread above the thread of the clamping pipe when the forcing element contacts the retaining recess wall with a slight inclination at least until the forcing element reaches a position below the wall of the guiding recess. 7. A container according to claim 6 wherein after the forcing element reaches a position below the wall of the second guide recess, the thread of the cylindrical pipe for clamping passes axially through the thread of the bottle with the addition of an axial force. 8. The cover according to claim 1 wherein the distance between the retaining recess and the guiding recess in the direction of loosening the cover is at least 2 mm. 9. The cap according to claim 8 wherein the distance between the retaining recess and the guiding recess in the direction of loosening the cap is from 2 mm to 5 mm. 10. The cap according to claim 9 wherein the distance between the retaining recess and the guiding recess in the direction of loosening the cap is from 2 mm to 4 mm. 11. The cover according to claim 1 wherein the first guide recess wall has an inclination of from 90 to 135 degrees. 12. The cover according to claim 1 wherein the second guide recess wall has a slope of from 0 to 10 degrees. 13. A container according to claim 6 wherein the second retaining recess wall includes a smaller slope and the smaller slope of the second retaining recess wall is from 10 degrees less to 10 degrees more than the slope of a side wall of the forcing element of the container facing the second retaining recess wall during the loosening of the lid, and the smaller slope of the second retaining wall and the side wall of the forcing element facing the second retaining wall have a slope of between 30 and 85 degrees. 14. A cover that covers a. an upper wall forming an opening; b. a cylindrical pipe for clamping (snap-on) which is suspended from the top wall and extends axially to a bottom end, c. the cylindrical pipe for clamping includes at least one retaining recess at the lower end thereof; d. the cylindrical pipe for clamping further includes at least one thread on an inner wall thereof; e. cylindrical pipe to clamp forming the first and second opposite walls of the retaining recess; f. the walls of the first and second retaining recesses having a slope where the slope of one of the walls of the first and second retaining recesses is smaller at least at one point than the slope on the other side of the first and second recesses at a point located at the same axial height; and g. the lower end of the cylindrical pipe for clamping is formed to include a guide recess for lowering the thread of the cylindrical pipe for clamping relative to the neck of the container, the lid is configured so that the guide recess includes a first wall with an upward slope and a second wall with a downward slope whereby with a rotation in the direction for closing the lid, the first guide recess wall allows the cylindrical pipe for clamping to be axially lowered onto the forcing element and the second guide recess wall consistent with the cylindrical pipe for clamping of the lid to be lifted relative to the closing element, the lid is made of a flexible material. 15. A container comprising a combination of a lid and a bottle, comprising a lid and a bottle having a neck and at least one forcing element, I. a lid comprising h) an upper wall forming an opening; i) a cylindrical tube for clamping which is suspended from the upper wall and extends axially to a lower end, j) the cylindrical pipe for clamping includes at least one retaining recess therein extending to the lower end; k) the cylindrical pipe for clamping further includes one or more threads on an inner wall thereof; l) the cylindrical pipe for clamping forms the first and second opposite walls of the retaining recess; m) the walls of the first and second retaining recesses having a slope where the slope of one of the first and second sides is smaller at least at one point than the slope on the other side of the first and second retaining recesses at a point located at the same axial height; and n) the lower end of the cylindrical pipe for clamping which is formed to include a guide recess for lowering and raising the thread of the cylindrical pipe for clamping relative to the neck of the bottle, II. the bottle neck has external threads, at least one bottle forcing element is adapted to be at least partially received in a retaining recess of a cylindrical pipe for clamping of the cap, wherein the guiding recess includes a first wall having an upward inclination and a second wall having a downward inclination wherein in rotation towards closing the cap, the first guiding recess wall allows the cylindrical pipe for clamping to be axially lowered onto the forcing element and the second guiding recess wall consistent with the cylindrical pipe for clamping of the cap to be lifted relative to the closing element, said cap being made of a flexible material and / or a bottle containing a personal care product. 16. The cap of claim 14 wherein the cap is structured such that under sufficient axial force, even upon initial rotation, the internal thread on the pipe for clamping can pass through the external thread of the neck of the container to facilitate removal from the cap once the forcing element is removed from the retaining recess. 17. The container of claim 15 wherein the lid is structured so that with sufficient axial force, even with initial rotation, the internal thread on the pipe for clamping can pass through the external thread of the neck of the container to facilitate the release of the lid when the forcing element is released from the retaining recess. 18. A container comprising a combination of a lid and a bottle, comprising a lid and a bottle having a neck and at least one forcing element, I. a lid comprising o) an upper wall forming an opening; p) a cylindrical pipe for clamping which is suspended from the upper wall and extends axially to a lower end, q) the cylindrical pipe for clamping includes at least one retaining recess therein extending to the lower end; r) the cylindrical pipe for clamping further includes threads on an inner wall; s) the cylindrical pipe for clamping forms the first and second opposite walls of the retaining recess; t) the walls of the first and second retaining recesses have a slope where the slope of one of the first and second sides is smaller at least at one point than the slope of the other side of the first and second retaining recesses at a point located at the same axial height; and u) the lower end of the cylindrical pipe for clamping which is formed to include a guide recess for lowering and raising the thread of the cylindrical pipe for clamping relative to the neck of the bottle, II. the neck of the bottle having external threads, at least one bottle forcing element adapted to be at least partially received in a retaining recess of the cylindrical tube for clamping of the cap, said cap being made of a flexible material and / or the bottle containing a personal care product. 19. A cover that covers a. an upper wall forming an opening; b. a cylindrical pipe for clamping (snap-on) which is suspended from the top wall and extends axially to a bottom end, c. the cylindrical pipe for clamping includes at least one retaining recess at the lower end thereof; d. the cylindrical pipe for clamping further includes at least one thread on an inner wall thereof; e. the cylindrical pipe for clamping forms the first and second opposite walls of the retaining recess; f. the walls of the first and second retaining recesses having a slope where the slope of one of the walls of the first and second retaining recesses is smaller at least at one point than the slope on the other side of the first and second recesses at a point located at the same axial height; and g. the lower end of the cylindrical pipe for clamping is formed to include a guide recess for lowering the thread of the cylindrical pipe for clamping relative to a neck of the container, said cap being made of a flexible material. It should be noted, of course, that the specific forms of the invention illustrated and described herein are intended to be illustrative only, as certain changes may be made thereto without departing from the express description of the present disclosure. Accordingly, reference should be made to the following appended claims in determining the full scope of the invention.

Claims

1. A cover comprising a. an upper wall forming an opening; b. a clamping cylinder suspended from the upper wall and extending axially to a lower end; c. said clamping cylinder including at least one retaining recess at a lower end thereof; d. said clamping cylinder further including at least one thread in a wall thereof; e. said clamping cylinder forming first and second opposing walls of the retaining recess; and f. said lower end of said clamping cylinder shaped to include a guide recess for lowering the thread of said clamping cylinder relative to a neck of the container,The cap is configured such that the guide recess includes a first guide recess wall having an upward slope and a second guide recess wall having a downward slope wherein in a rotational direction for opening the cap, said first guide recess wall allows a cylindrical pipe to clamp axially lowered into the neck of the container having a forcing element and the second wall consistent with the cylindrical pipe of the cap to clamp to be lifted relative to the container and said thread maintains its axial position relative to a thread on a neck of the bottle on which the cap is installed when said forcing element contacts a retaining recess wall at least until said forcing element reaches a position below the second guide recess wall., 2. The lid according to claim 1 further comprising a cover sleeve for closing the opening, said cover sleeve being hingedly attached to a cover base of the lid.

3. A cover according to claim 1 wherein in the direction of rotation for loosening said cover, after encountering a retaining recess, the forcing element encounters a first guide recess wall and then a second guide recess wall.

4. A cover according to claim 1 wherein when said forcing element reaches a position below the first guide recess wall, the cylindrical pipe thread for clamping and the housing thread maintain their relative axial positions with the housing thread above the pipe thread for clamping.

5. A container comprising a combination of a cap and a bottle, comprising a cap and a bottle having a bottle neck and at least one forcing element, I. said cap comprising a) an upper wall forming an opening; b) a cylindrical tube for clamping suspended from the upper wall and extending axially to a lower end; c) said cylindrical tube for clamping including at least one retaining recess therein extending to the lower end; d) said cylindrical tube for clamping further comprising one or more threads on a wall thereof; e) said cylindrical tube for clamping forming first and second opposing walls of the retaining recess; and f) said lower end of said cylindrical tube for clamping being formed to include a guide recess for lowering and raising the thread or threads of said cylindrical tube for clamping relative to the bottle neck,II. said bottle neck having a thread or threads, at least one bottle forcing element adapted to be at least partially received in a retaining recess of the clamping cap cylinder pipe, wherein said guiding recess includes a first wall having an upward slope and a second wall having a downward slope wherein in a rotational direction for opening the cap, said first guiding recess wall allows the clamping cap cylinder pipe to be axially lowered onto the forcing element and said second guiding recess wall consistent with the clamping cap cylinder pipe to be lifted relative to the closing element,The clamping pipe thread and the bottleneck thread maintain their relative axial positions with the bottleneck thread above the clamping pipe thread when the forcing element contacts a retaining recess wall in a loosening direction at least until the forcing element reaches a position below the second guiding recess wall., 6. A container according to claim 5 wherein after said forcing element reaches a position below the wall of the second guide recess, said cylindrical pipe thread for clamping passes axially through the bottle thread with the addition of an axial force.

7. The cover according to claim 1 wherein the distance between the retaining recess and the guiding recess in the loosening direction is at least 2 mm.

8. The cover according to claim 7 wherein the distance between the retaining recess and the guiding recess in the loosening direction is from 2 mm to 5 mm.

9. The cover according to claim 8 wherein the distance between the retaining recess and the guiding recess in the loosening direction is from 2 mm to 4 mm.

10. The cover according to claim 1 wherein the first guide recess wall has an inclination of from 90 to 135 degrees.

11. The cover according to claim 1 wherein the pipe thread for clamping is located on an internal wall and the second guide recess wall has an inclination of from 0 to 10 degrees.

12. A cover comprising a. an upper wall forming an opening; b. a clamping cylinder suspended from the upper wall and extending axially to a lower end; c. said clamping cylinder including at least one retaining recess at a lower end thereof; d. said clamping cylinder further including at least one thread on an inner wall thereof; e. said clamping cylinder forming first and second opposing walls of the retaining recess; and f. said lower end of said clamping cylinder shaped to include a guide recess for lowering the thread of said clamping cylinder relative to a neck of the container, said cover being made of a flexible material.

13. The combination of a cap and a bottle according to claim 5 wherein said one or more pipe threads for clamping are located on an inner wall thereof and said bottle neck thread or threads are external.

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