Abstract: A closure cap has winged fingerpieces which include latching members. The fingerpieces provide a hinge-up release movement of the latching members when the fingerpieces are squeezed radially inwardly. The invention provides a closure that is child resistant yet easy and convenient for an adult to operate.

Abstract: A container neck and child-resistant closure for the neck are disclosed. The closure includes an inner part and an outer part, and castellations on the parts which mate when the outer part is displaced axially, to lock the parts together for rotation. A ratchet mechanism including ratchet ramps and cantilever leaf springs biases the inner and outer parts axially and rotationally apart, and allows relative rotation of the parts in one direction of rotation, when the castellations are not engaged. The angle through which outer part has to be turned to enable the castellations to be engaged may be less than 45.degree. and preferably less than 25.degree.. The closure may be moved between fully opened and closed positions by rotation through less than 360.degree. and preferably about 90.degree.. A tamper-evident ring, and a retaining means for retaining the closure in the closed position, may also be provided.

Abstract: A container neck and child-resistant closure for the neck are disclosed. The closure includes an inner part and an outer part, and castellations on the parts which mate when the outer part is displaced axially, to lock the parts together for rotation. A ratchet mechanism including ratchet ramps and cantilever leaf springs biases the inner and outer parts axially and rotationally apart, and allows relative rotation of the parts in one direction of rotation, when the castellations are not engaged. The angle through which outer part has to be turned to enable the castellations to be engaged may be less than 45.degree. and preferably less than 25.degree.. The closure may be moved between fully opened and closed positions by rotation through less than 360.degree. and preferably about 90.degree.. A tamper-evident ring, and a retaining means for retaining the closure in the closed position, may also be provided.

Abstract: A child-resistant container according to the present invention has a container body and a cup-shaped closure which is installed telescopically over the open end of the container body. Mating longitudinal splines and ribs are provided on the adjacent walls of the container body and the closure to interfere with one another as the closure is longitudinally urged from a closed position to an open position. The spline and rib patterns are selected so that the splines and ribs interfere unless the closure is oriented in a predefined angular unlocked position with respect to the container body. The splines and ribs may be irregularly sized or circumferentially spaced along the walls. A cylindrical ledge of slightly increased diameter is provided on the container body longitudinally adjacent the splines. Additional interference ledge segments may be provided on the container body and the closure on or between the splines and ribs.

Abstract: A tamper-indicating, child resistant closure for a threaded bottle includes an inner cap and an outer driver telescoped over the inner cap. The inner cap includes a top wall having spaced apart upstanding ribs. The outer driver includes a top wall having a pair of top wall segments hinged for pivotal movement to, and being spaced apart from each other by a spacing rib also forming part of the top wall of the driver. Each of the top wall segments initially is secured to contiguous sections of the outer driver by frangible, tamper-indicating tabs, and the top wall segments are moved from a generally horizontal position to a generally vertical position after the tamper-indicating tabs have been broken to form a driving section in the top wall of the driver. This driving section then is directed into the space between the upstanding ribs associated with the top wall of the inner cap by moving the inner cap and outer driver axially toward each other.

Abstract: A child resistant, snap on, twist off closure container package which is open by squeezing and deflecting diametrically opposed side portions of the closure to bring cam followers into engagement which cams on the container so that subsequent turning causes axial displacement and opening movement of the closure from the container. Guide members prevent deforming of the closure to maintain sealing surfaces and adjoining surfaces of the closure and container in alignment with each other and prevent distortion on to expose surfaces which can be gripped by the fingers or teeth in an effort to open the closure and container in a manner other than the intended method of squeezing and twisting of the closure relative to the container.

Abstract: A container closure having syringe tip connector is provided which comprises a coupling for securing the closure to the container, a dispensing port for releasably connecting the tip of a syringe and a cap for sealing the dispensing port. The closure has dual child-resistant capability in a "push and turn" mechanism for securing the coupling to the container and a latching flap type lid on the cap. The closure is especially useful for aspirating medication into a syringe for oral administration to children, adults or animals.

Abstract: A child resistant closure or cap for use on a container having a threaded, shouldered neck is disclosed. Complimentary locking means on the cap and container shoulder and a resilient release tab are provided. In one embodiment the cap includes an internally threaded cylindrically-shaped skirt having a radially extending flange portion at a bottom edge. The container shoulder has a recess formed therein and is adapted to be adjacent the cap flange portion when the cap is fully threaded onto the container neck. A downwardly extending protrusion is formed on a bottom surface of the flange portion and cooperatively engages the recess when the cap is fully threaded onto the container neck to prevent rotational removal of the cap. The protrusion is located on the resilient release tab which is formed by a circumferential slit and a perpendicular slit, whereby the release tab is upwardly or axially deflectable to disengage the protrusion from the recess and permit rotational removal of the cap.

Abstract: A child-resistant container according to the present invention comprises a container body and a cup-shaped closure which is installed telescopically over the open end of the container body. Mating longitudinal splines and ribs are provided on the adjacent walls of the container body and the closure to interfere with one another as the closure is longitudinally urged from a closed position to an open position. The spline and rib patterns are selected so that the splines and ribs interfere unless the closure is oriented in a predefined angular unlocked position with respect to the container body. A cylindrical ledge of slightly increased diameter is provided on the container body longitudinally adjacent the splines. The ledge prevents a user from discovering the unlocked position by rotating the closure and feeling reduced resistance when the unlocked position is reached.

Abstract: A closure is provided for a container having an externally threaded neck and a plurality of locking teeth. The closure has a first outer side wall, a second inner side wall, and projections within the outer side wall for engaging the locking teeth of the container, to prevent removal by children and the like. The outer side wall can be distorted to displace the locking projections, for opening the container. For forming a seal with the neck of a container, one or both of a textured finish on an annular sealing surface within the second inner side wall, and an internal sealing lip are provided. This eliminates the requirement for a separate sealing liner.

Abstract: The invention relates to a receptacle such as a perfume or cosmetic bottle, having a screw-threaded cap orientable relative to the receptacle. The receptacle has a screw neck (2) that has two symmetrical external screw threads (3, 4) each provided with an interruption (5) in the vicinity of the beginning of the thread (3, 4) and with a substantially axial abutment (6) in the vicinity of the end of the thread (3, 4). The cap has internally two symmetrical screw threads each comprising a catch (11) provided by one end of the thread and a substantially axial end (12) at the other end of the thread. The catch (11) is engageable in the interruption (5) and the abutment (6) and the thread end (12) are interengageable.

Abstract: A child-resistant, two-piece closure is formed with a resilient wedge in the outer cap member which can be pressed into interlocking relationship with an upstanding locking lug element of the inner cap member to facilitate rotational movement in the closure loosening direction by a healthy adult. An aperture is provided in the outer cap member so that a pencil may be radially inserted therein and into contact with the upstanding locking lug element so as to interlockingly couple the outer cap member and inner cap member for rotational movement in the closure loosening direction with the pencil by an elderly or handicapped individual. The child-resistant closure serves as a duel function device by allowing push-in and turn closure removal by healthy adults and easy removal with an inserted pencil or the like by elderly or handicapped adults while still being resistant to removal by young children.

Abstract: There is disclosed a child resistant bottle closure assemblage comprising an outer cap member, an inner cap member and an interlocking member disposed between the inner and outer cap members. When secured to a bottle in its normal, upright position, the outer cap member can be rotated without engaging the interlocking member so that the assemblage can not be removed from the bottle. When the bottle is inverted so that the interlocking member engages the outer cap member, rotation of the outer cap member results in removal of the entire assemblage from the bottle.

Abstract: A container for use in combination with a closure has a threaded neck and a flexible lip portion which extends inwardly and upwardly from the top of the neck portion and which defines the opening to the container. The closure has a top portion from which depends a threaded annular skirt which cooperates with the threaded neck portion. The upper surface of the threads on the annular skirt have a plurality of radially extending small upwardly pointed ribs defining fastening configurations registrable with a plurality of radially extending small downwardly pointed ribs on the lower surfaces of the thread on the neck portion of the container. The threads of the closure are smaller than the threads on the neck of the container so as to extend a lesser distance toward the neck of the container than the distance the thread on the neck of the container extends toward the closure.

Abstract: A polyethylene shipping drum especially suited for shipping hazardous materials is disclosed. The drum comprises a molded container and closure which are threadably connected to each other to form a seal therebetween. A thread lock is provided for the threaded connection between the container and closure. The container has a plurality of indentations in the side wall thereof to provide ledges for stacking the containers one inside the other in a stable, nested relationship. An annular rim is provided on the closure with an inclined annular surface for retaining the sealing gasket in a groove without adhesives.

Abstract: A closure system comprising a container having a neck with external threads thereon and a cap having an end wall, an annular skirt and a dispensing opening extending through the end wall. The skirt has internal threads complimentary to the external threads on the container neck for selectively screwing the cap onto the container neck. Cooperating locking members are provided on the outer surface of the container neck and on the inner surface of the skirt, the locking members preventing rotation of the cap. In one embodiment, a tear out section is provided on the cap skirt which is torn when an attempt is made to unscrew the cap from the container. In another embodiment of the closure system, the locking members are used in association with a non-cylindrical container and a non-cylindrical cap to position the dispensing opening relative to the container in a predetermined position.

Abstract: A closure for containers provided with one or more closure projections adapted to cooperate with means on the container for securing the closure in sealing position over the open mouth of the container. The closure of the invention can be used with containers designed for child resistant packaging or with containers designed for conventional closures. The closure includes a top wall and a depending skirt portion. One or more locking projections are formed on the inner wall surface of the skirt portion. The locking projection has an upper surface facing the top wall of the closure on which is formed a lug which extends parallel to the axis of the closure so that the locking projection has a generally inverted T-shaped configuration including a pair of oppositely extending arms which extend normal to the lug. The extending arms define support surfaces which cooperate with the securing means of the container to prevent cocking or tilting of the closure when in the locked and sealed position on the container.

Abstract: A safety closure and container package including an internally threaded closure cap and a container having a threaded neck. A retention flange is located on the container neck below the threads, having a gradually sloping upper surface and an abrupt, inwardly directed lower surface extending downwardly toward the neck at 45.degree.-90.degree.. A coacting inwardly projecting retention bead on the cap completes this child-resistant feature requiring considerably more force for removal of the closure than application. The safety package can also include a second container flange and cap bead located between the retention flange and bead and the threads to provide a non-backoff feature. The non-backoff flange has a gradually sloping upper surface and a gradually sloping inwardly directed surface extending downwardly toward the container neck at 15.degree.-25.degree..

Abstract: A safety lockable container includes a cylindrical container body, an integrally formed outlet nozzle, and a detachable cap. The nozzle has an external thread, which mates with an internal thread on the inner wall of the cap. A plurality of depending claws formed at the bottom of the cap mate in locking engagement with a plurality of corresponding notches in the side wall of the container.

Abstract: A child-resistant container including in combination a container and a threadedly engaged closure means. The interior of the closure means is provided with compressible sealing means for fluid-tight sealing of the container. The neck of the container is provided with outwardly radial projections and the skirt of the closure is provided with inwardly radial grooves to engage said projections and provide a child resistance means. The closure means has an indicating marker and the marker is visually aligned with a visible feature of the container when the container is both sealed and in the child-resistant mode.

Abstract: A liquid-tight child-resistant package that includes a glass or plastic container of the wide mouth type (i.e., with a container finish "T" dimension of at least 33 millimeters) and a complementary molded thermoplastic closure that utilizes a separate disk-type liner. The closure which, with the exception of the separate liner, is molded in one piece, has a multiple helical thread start, and each closure thread has a vertically extending shoulder on its upper side. Each complementary container finish thread has a vertically extending shoulder that engages the corresponding shoulder on the closure, after the partial unscrewing of the closure, to prevent further unscrewing of the closure until the closure is vertically depressed on the container finish, against the spring action of the closure liner, to separate the shoulder on the closure thread from the shoulder on the container thread and to thereby permit continuation of the unscrewing of the closure until it can be removed from the container.

Abstract: Safety closures resistant to (and evidencing) tampering comprising a snap cap or screw cap, a rotary safety ring, and a tear tab attached to the neck of the container, said closure requiring that the tear tab be removed before the safety ring can be lowered; the safety ring must be aligned with the cap in one angular position and pushed downwardly away from the cap before the cap can be removed from the container. These safety closures may include a tear pin, attached to the cap and to the ring, which must be broken before the cap can be removed from the container; the tear pin may be in addition to, or an alternative for, the tear tab. The tear pin and tear tab are made to be removable. This invention describes a tamper resistant and tamper evident closure comprising a cap having a depending annular flange with a slot therein, and an outwardly directed wing protruding through said slot; the cap cannot be removed without causing the cap to shear off the outwardly directed wing, which is made to be removable.

Abstract: A bottle with a neck (1) has a child-resistant screw closure cap (13). In order to make the cap (13) child-resistant, the neck (1) is fitted with a collar (7) of U-shaped cross-section. The collar (7) is retained on the neck (1) by engagement of pawls (11) inside a portion (8) of the collar under a retaining ring (2) on the neck (1). The cap (13) is screwed onto the part (8) of the collar and to allow this to be done, the collar (7) is prevented from rotating on the neck (1) by engagement of the pawls (11) with ratchet teeth (4) on the outside of the neck (1). The pawls (11) and the ratchet teeth (4) are so shaped that if an attempt is made to unscrew the cap (13) merely by turning it in a counter-clockwise direction as seen from above, the pawls (11) ride over the ratchet teeth (4) so that the collar (7) is lifted on the neck (1) and is free to rotate.

Abstract: A tamper indicating closure cap of the type having a pivotable stopper closing a cap top orifice. The stopper has an integral flange overlying portions of the top and extending behind the pivotable member to preclude pivoting of the pivotable member. The flange is removable from the pivotable member and indicia formed in the container top underlying the flange is made visible by removal of the flange.

Abstract: This bottle has a projection or "latch" from its neck, just below the thread, and along and near the lower end of that thread. There is a gap in the cap thread, that lines up with the "latch" when the cap is fully screwed on. The cap deforms when screwed on, passing the "latch" over the end of the cap thread and into the gap. The "latch" then resists cap removal. Only torque beyond the ability of a small child (or even requiring use of a tool) frees the cap. A second projection from the neck, a "flag", is breakable. It is below the bottom end of the neck thread, just above (measured along the thread) the "latch". The "flag" can fold against the neck, but springs out if released. It catches in the cap-thread gap when the cap is unscrewed, and is torn off or broken by forcible removal of the cap. Its removal or breakage evidences that the bottle has been opened.

Abstract: A reusable tamper-proof container comprising a bottle, screw cap and closure with pull tab. The closure is inserted into the cap with the pull tab positioned into a recessed area in the cap. After the cap is applied to the bottle, the closure is sealed to the lip of the bottle under heat or pressure. When the cap is removed the closure remains adhered to the lip of the bottle and the pull tab is positioned in a recessed area in the neck of the bottle until the closure is peeled off. A childproof feature is added by placing a bar on the bottle which mates with a broken area of the cap's threads thereby preventing movement of the cap in relation to the bottle.

Abstract: A child resistant package comprising a container and a closure. The container has an open end, a thread on the inner surface of the open end, diametrically opposed lugs on the outer surface of the open end having a radially extending surface. The closure has a top wall, a peripheral skirt and an annular wall spaced radially inwardly from the peripheral skirt, and having an external thread on the outer surface thereof interengaging the thread on the inner surface of the upper end of the closure. The skirt has radially engageable lugs extending radially inwardly from the skirt. The skirt is flexible such that the closure can be engaged with the container by interengagement of the threads and rotation of the closure in one direction until the lugs on the skirt engage the lugs on the container and the closure may be removed by radially compressing portions of the closure at about 90.degree.

Abstract: A child-resistant package characterized by a container with a threaded neck portion, a closure provided with a multiplicity of threads cooperatively engaging the threads on the neck portion, means connected to the threaded neck portion for stopping the threading rotation of the closure onto the threaded neck portion at a predetermined position, and resilient liner means interposed between the underside of the top of the closure and the top of the neck portion.

Abstract: A locking means for a threaded container and closure has been invented. The locking means comprisesA. a container having a neck portion; and on the external surface of said neck portionI. a continuous first thread;II. a ring adjacent the terminal end of said thread;III. and at least one lug havinga contacting surface diagonally aligned with said first thread; an upper surface adjacent to or lower than said ring; and a height and radial thickness greater than said ring;B. a closure havingI. a radially flexible inner flange, the terminal end of said inner flange coordinating with the internal surface of said neck; andII. an outer flange havinga continuous second thread coordinating with said first thread; and at least one tab adjacent the initial end of said second thread whereby said closure is threaded onto said container, said tab passes onto said contacting surface and is then engaged by the terminal surface of said lug.

Abstract: A container and closure assembly having complementary engaging threads on the closure and container which are used for closing the container but which do not afford opening movement because of a one-way stop arrangement. Opening movement requires orientation to a predetermined location followed by tilting of the cap to open the container and remove the closure therefrom.

Abstract: A child resistant container and cap assembly requiring simultaneous tilting of a lock element in the form of a ring relative to a cap and rotation of the cap relative to the container to disengage complementary lock elements on the ring and container to permit disengagement of threads normally holding the cap in sealed relationship on the neck of a container.

Abstract: The invention comprises a combination of a container and a child resistant liquid seal closure with a dispensing spout. The container neck has one or more locking lugs which engage one or more locking lugs on the interior surface of the closure to prevent rotational removal of the closure from the container. A snap cap is retained within the closure, adjacent the inside surface of the top panel, and provides a primary liquid seal. The snap cap is provided with a dispensing spout, which is normally closed by the outer closure. To remove the closure, or to open the dispensing spout, the closure skirt must be squeezed and distorted to disengage the closure lugs radially outwardly from the locking lugs on the container neck.

Abstract: The invention contemplates safety-closure structure involving threaded engagement of cap and bottle-neck members, wherein coacting lug formations on the respective members have compliantly yieldable cammed latching engagement in approach to a fully-closed relation of the members and wherein, once in the fully-closed relation, a positive-lock relation prevents unthreading rotation of the members. The engaged threads are sized for a quantum of axial lost-motion, and resilient action of a seal which reacts axially between the members is operative to constantly load the cap member to its axially upper limit of the lost motion. The lug formations are of such axially limited extent that, when the members are in their fully-closed relation, an axial depression of the cap member through the lost motion and against the resilient seal action is necessary to free the positive-lock relation of the lugs formations, thus then permitting a thread-off rotary manipulation of the cap member.

Abstract: A container closure system such that an uninstructed person would find it difficult to remove the closure. Helical screw threads on the container and on the one-piece closure have detents and discrete thread portions engageable under the influence of a spring means once the closure has been screwed onto (cap) or into (stopper) the container to a certain extent. Unscrewing can only be effected by firstly overcoming the spring means to separate the locking detents/thread portions and subsequently turning the closure while continuing to overcome said spring means.

Abstract: A safety closure cap includes a top cover; a generally cylindrical skirt member downwardly extending from the top cover; and a flexible arcuate lip provided on the interior surface of the skirt, the lip having a leading and trailing edge in close proximity to each other.

Abstract: A childproof safety screw cap and container having yieldable cap retainer means which are overcome, to effect cap removal, by a quarter-turn twist that produces a relatively large axial cap travel due to the provision of multiple screw thread elements thereon. The cap can be pushed straight on, accompanied by bypassing of the threads. The retainer means and the threads increase their interlock action if the cap is squeezed laterally, as by the act of a child applying its teeth to the cap. A shielding flange on the container defeats efforts to bite the cap under its bottom rim, and a bevelled top peripheral portion of the cap defeats its being gripped at the top, by the teeth.

Abstract: This invention concerns plastic lids and pails having improved child-proof locking features. Intermittently placed teeth-like elements located on the pail and lid interlock to prevent the easy opening of the assembled pail and lid.

Abstract: A safety closure and container combination is disclosed. The container and closure each have mating lugs which cooperate with each other to move the closure toward the container when rotated in a first direction and to move the closure away from the container when moved in a second direction. Cooperating stop surfaces are provided on the closure and container which engage when the closure is rotated in a direction to move it away from the container so that it is necessary to move the closure toward the container to allow the stop surfaces to move past each other thereby allowing the closure to be removed from the container.

Abstract: One piece child resistant cap for containers. A container has a neck with a thread on its external surface. A first group of teeth is arranged in a line on said neck below the lower end of said thread. A second group of teeth is arranged in a line on said neck opposite said first group of teeth. A cap of flexible material having a cap thread engages the container thread. A third group of teeth on the inside of the lower portion of the cap is spaced below the cap threads. A fourth group of threads on the inside of the lower portion of the cap is located opposite the third group of teeth. Whereby when the cap is screwed on to the container, the cap teeth will engage the container teeth so that the cap cannot be unscrewed in conventional manner and so that the cap must be squeezed to release the engagement of the cap teeth and the container teeth.

Abstract: A decorative personal electric heating appliance has an exterior covering in the form of a stuffed animal, doll, novelty item, etc. having a predetermined appearance, texture or feel which is psychologically attractive and cuddly. The exterior covering encloses an internal fluid-containing bladder having a fill opening. An electric immersion heater means is provided in the bladder for heating the fluid. The stopper for the bladder fill opening and the electrical connector for the electric heater are located recesses in the exterior covering covered by childproof caps camouflaged to blend in with the exterior covering. A temperature indicator is provided on the exterior covering to indicate the temperature of the appliance. The bladder may be emptied and refilled with a cold medium to enable the appliance to be used for cooling if desired.

Abstract: A child-resistant threaded closure for containers is presented which includes a lower ring-like portion attached to the closure by retractable and extendible legs and having a matching thread. With the closure screwed in place on a container, the ring is pushed down by means of tabs to a position below the last thread on the container with the legs extended whereupon, when an attempt is made to unscrew the closure, the thread segment of the ring interferes with the last thread of the container and prevents its removal. For the closure to be removed, the ring is lifted up by finger pressure applied to the tabs until the legs are fully retracted and the threads match up with the others after which action the closure can be unscrewed.

Abstract: A single piece threaded safety closure for sealing the open end of a container. At least three enlarged members are equi-angularly spaced about the closure thread and form locking shoulders adapted to inter-engage corresponding shoulders defined on the thread of the container to lock the threads together and prevent removal of the closure except by special manipulation. A resilient liner is compressed when the closure is drawn down on the container and the compressed resilient liner urges the cap upwadly and maintains the shoulders in locked engagement.

Abstract: A container closure with a screw cap that after the opening of the container remains attached to the same, by means of a hinge. A sealing ring is joined to the lower end of the cap and rotatably connected to the container, but impossible to remove, as the inner diameter of the ring is smaller than the outer diameter of a bulge on the container. Between the cap and the sealing ring is a breakable connection and an unbreakable part serving as the hinge. When the cap is unscrewed the sealing ring is after a while obstructed by the bulge, which causes the breakable connection to break, whereafter the unscrewed cap can be swung aside around the hinge so that the contents of the container can be freely poured out.

Abstract: A one-piece thermoformed tamper-proof closure which provides an indication showing that the closure has been removed from the container on which it was placed. The closure has a child resistant feature in that it is made difficult to open by requiring a squeezing action. In addition, the closure is provided with means for providing a firm locking arrangement after the closure has been opened.

Abstract: A container or vial for medicines has a reversible internally and externally screw-threaded closure for selective engagement with internal and external screw-threads on the mouth of the container. Wedge sealing rings on the reversible closure force the coacting screw-threads of the closure and container into tight compressive engagement in either position of use of the closure so that the container is tightly closed. A group of locking teeth on the skirt of the closure cooperate with a single laterally movable tooth adjacent to the container side wall to lock the closure on the container so that it cannot be separated from the container without complex manipulation, thereby rendering the device child-proof. The movable tooth of the container is supported in spaced relation from the container side wall by a yielding bar carried by two radial support arms joined to the container.

Abstract: A child-resistant container and closure is disclosed. The container has multiple helical threads with each thread having a ratchet portion at its start end. The closure features a like number of helical threads for cooperation with the container threads. The closure threads have adjacent their terminal ends at least one ratchet tooth for cooperation with the ratchet portion of the closure threads. Means is also provided for disengaging the ratchet teeth with the ratchet portion by providing for downward axial movement of the closure.

Abstract: The invention provides a protective or safety closure which inhibits inadvertent opening of the container. The neck portion of the container itself is provided with threads along which a notched portion, for example, in the form of serrations, is provided. The interior of the cap itself is also provided with threads which cooperatively engage the threads in the neck portion. Along the threads in the cap a notched portion, such as in the form of serrations, is provided to engage the serrations of the neck portion to lock the cap in position. Resilient members are also provided on the underside of the cap portion to engage the top of the neck portion which perform the function of bringing the notched portion in the cap into engagement with the notched portion on the neck of the container.

Abstract: A safety cap is adapted to assume a locked position on the neck of a container at which an annular cap rib rides within the concavity provided by an annular neck recess. In order to remove the cap, it must first be pulled outwardly to break this interengagement. Thereafter, the cap need only be rotated or turned to free the cap from neck threads. In order to mount the cap on the container neck, the cap is initially twisted to cause interengagement of the threads of the cap with the threads of the container neck. The threads are so arranged that when the cap rib engages the upper part of the neck recess, the last turn will force the rib into the recess and at the same time clear the threads from one another. In this position the cap will turn freely relative to the neck with the cap rib disposed within the neck recess.

Abstract: A child safe cap for a container generally of the screw on type, and of the push and turn variety, wherein cap and container are provided with screw threads having interengaging ratchet-like teeth at portions thereof, preventing a turn of the cap in a direction to remove it, but including structure providing for pushing down upon the cap to release the teeth making it possible to turn the cap off.

Abstract: A "childproof" container closure comprises a threaded neck member and a threaded closure cap or plug member cooperating therewith. One member bears a raised helical thread having a stop end and the other member defines two helical paths in which the helical thread may be engaged, one of which paths allows the cap or plug member to be removed from the neck member and the other having at its end a blocking member adapted to engage the stop end of the helical thread. The cap or plug can be resiliently sprung axially to move the raised helical thread from one helical path to the other.