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 thermoplastic closure suitable for fitment to a threaded container neck is disclosed. The closure has a top wall with an annular sidewall depending therefrom. To provide a gas-tight seal between the closure and the container, there is provided a gas-tight sealing system above the closure thread. About the inside surface of the annular sidewall is an extended closure thread which, due to its extent, requires the user to make two turning motions to achieve removal of the closure from the container. By requiring two turning motions, sufficient time is provided for venting of any pressurized gas from the container to the atmosphere. This venting can be facilitated by the utilization of any conventional venting means.

Abstract: A threaded thermoplastic closure having a free-floating liner is disclosed. To prevent backoff of the closure from a container, studs are provided on the top wall of the closure which anchor the closure to the liner, thus utilizing the resistance to rotation present between the liner and the container lip.

Abstract: An apparatus for removing a waste portion from a blow molded article is disclosed. The apparatus removes the waste portion while the article is enclosed within the blow mold and features a gripping structure for gripping the waste portion and a power assembly associated with the gripping structure to move the gripping structure from the article, thereby pulling the waste portion from its point of attachment with the article. The gripping structure includes two opposed gripping means which are arcuately movable about their respective pivot points. Each pivot point is laterally displaced from the gripping structure and positioned along a line extending through the shortest distance from the pivot point to that portion of the gripping structure which is closest to the attachment of the waste portion to the article.

Abstract: An injection blow molding apparatus capable of achieving biaxial orientation and the produced article is disclosed. The apparatus features a transport table rotatable about and reciprocally movable along its center axis and at least an injection molding station and a blow molding station positioned adjacent to and around the transport table. There is at least one core rod mounted to the transport table, which core rod is moved from the injection molding station to the blow molding station by the table movements. The core rod coacts with the injection molding station to form an injection molded parison which is transported on the core rod to the blow molding station. At the blow molding station, a stretch pin mounted within the core rod is utilized to aid in the biaxial orientation of the final article blown at the blow mold station.

Abstract: A thermoplastic closure for fitment to a container for packaging product capable of producing internal container pressure, e.g., carbonated beverages, is disclosed. The closure comprises a top wall and an annular sidewall downwardly depending from the top wall. A closure thread on the inside surface of the sidewall is provided for cooperation with the container neck thread to achieve fitment of the closure to the container. A sealing system adjacent the top wall of the closure provides sealing of the closure to the container. Venting structure is provided on either the closure or the container or both for venting of pressurized gas from the container upon loss of the seal when the closure is rotated to remove it from the container. A heat-shrinkable tamper-indicating means is attached to the lowermost edge of the sidewall of the closure. Application of heat to the tamper-indicating means causes it to shrink towards the container and to a point of interference with a container flange.

Abstract: A two-piece nozzle, for fitment to hand actuated liquid pumps having a barrel portion and a bore therethrough for passage of liquid, is disclosed. The nozzle has an integrally formed nozzle cap which is mounted to the end portion of the barrel. Enclosed within the nozzle cap is an integrally formed sealing structure which is attached to the barrel of the pump. The sealing device provides a peripheral liquid-tight seal around the barrel between the nozzle cap and the barrel. It also provides a check valve which is movably positioned at the mouth of the bore to provide a liquid-tight bore seal. The check valve is biased to provide the liquid-tight bore seal which bias can be overcome by liquid pressure in the bore developed upon actuation of the pump.

Abstract: A process and multistation apparatus for injection blow molding a thermoplastic material to form a blow molded container having an integral injection molded handle is disclosed. The process and apparatus feature an injection mold which is closed to form an injection mold cavity with a contiguous injection mold handle cavity. A preform pin is inserted into the injection mold cavity through a preform carrier to form a preform recess into which hot thermoplastic is injected to form a hollow preform having a solid injection molded handle. After cooling the thermoplastic preform the preform pin is withdrawn and the molds are opened. The injection formed preform may be optionally heat treated prior to the preform being enclosed within a blow mold. The blow mold forms a cavity having the final desired container shape and a cavity into which the handle is enclosed.

Abstract: A thermoplastic cap having improved anti-backoff characteristics features a primary helical thread and a coaxial secondary thread. The cap is of a thermoplastic material having an elastic modulus in flexure within the range of from about 0.2.times.10.sup.5 to about 10.sup.6 pounds per square inch so that the secondary helical thread will flex in response to tightening torque.

Abstract: This invention relates to a multistation apparatus for unloading and unscrambling containers from a storage hopper. The apparatus has unloading means for continuously moving containers from the hopper onto a track structure. The track structure is powered so as to move the containers to the various apparatus stations. At the first station a gate is positioned over the track so that only one layer of unloaded containers is able to travel to other subsequent stations. A second station is provided with orientation plates adjacent the track so that containers which are on the track but which do not have their long axis in the direction of container travel will, upon contact with the orientation plates, be turned so that their long axis will lay in the direction of travel. A gate having an opened and closed position is provided at the third station.

Abstract: A process for the manufacture of thermoplastic sheet having elliptical perforations including a rotatable molding element having a series of hexagonal-shaped depressions having centered therein elliptical holes, the elliptical holes having a major axis and a minor axis, the major axis being oriented parallel to the direction in which the molding element is rotated, a means for applying a fluid pressure differential to a surface of the thermoplastic sheet to force the sheet against the molding element to effect rupturing of the sheet and the formation of elliptical holes in the sheet.

Abstract: A three-piece nozzle is disclosed, for fitment to a hand actuated liquid pump having a barrel portion with a bore therethrough for passage of liquid. The nozzle features an integrally formed nozzle cap which fits around the end portion of the barrel. Enclosed within the nozzle cap is an integrally formed nozzle seal which forms a peripheral liquid-tight seal around the barrel between the nozzle cap and the barrel. Also provided is an integrally formed check valve which is movably positioned at the mouth of the bore and which is biased towards the mouth of the bore to form a liquid-tight bore seal. The bias is overcome, to open the liquid-tight bore seal, upon actuation of the pump which provides liquid pressure in the bore to act against the check valve.

Abstract: A nozzle for fitment to hand actuated liquid pumps having a barrel portion with a bore therethrough for passage of a liquid is disclosed. The nozzle features an integrally formed nozzle cap which is mounted to the barrel and which encloses an integrally formed sealing structure. The sealing structure provides a peripheral seal to provide a liquid-tight seal around the barrel between the nozzle cap and the barrel. The sealing structure also provides a check valve portion which is movably positioned at the mouth of the bore. The check valve is biased to form a liquid-tight bore seal. This bore seal is overcome by liquid pressure which builds in the bore upon actuation of the pump. Also provided is a spray member which is fittable within the nozzle cap and which is in abutment with the end wall of the nozzle cap. The spray member, along with the wall of the nozzle cap which it abuts, form a path for the liquid as it is dispensed, which path will cause the liquid to break up and form a spray pattern.

Abstract: A scaffold assembly including a ladder unit having an outside vertical member with a hollow top end and bottom end, an inside vertical member connected to the outside vertical member by horizontal steps, the top step and the bottom step having a hollow end adjacent to the point at which they are connected to the inside vertical member, the hollow top end and bottom end of the outside vertical member being adapted for connecting to another ladder unit by placing a pin in the hollow portions of the two vertical ladder units, the ladder unit being adapted for joining side by side to another ladder unit by placing a horizontal joining member in the open ends of the top and bottom steps to join the two ladder units horizontally side by side.