Abstract: A blanking plug is used for sealing provisionally connection openings (3) of non-installed liquid-operated units, in particular of oil-hydraulic systems (1) for motor vehicles. A section (12) of the blanking plug (10) is inserted into, and fills up, the connection opening (3). The section (12) is provided with a hollow space communicating with a closed portion of the connection opening (3). The hollow space is filled with a material tending to absorb the respective liquid, for example a tampon (17).

Abstract: An oxygen scavenger comprises an oxygen absorbent composition and an oxygen permeable film covering the oxygen absorbent composition and including an asymmetric porous membrane whose outer surface portion in the thickness direction of the asymmetric porous membrane is formed as a dense skin layer. Since the dense skin layer is very thin, the oxygen permeability to the oxygen absorbent composition through the oxygen permeable film can be maintained sufficiently high. At the same time, since the dense skin layer has a sufficiently high barrier property as well as a high oxygen permeability, contact of the substances stored in a container with the oxygen absorbent composition can be surely prevented. The substances stored in the container attached with the oxygen scavenger can be prevented from deterioration due to the oxygen present in the container by a high oxygen absorption ability of the scavenger, and maintained in a good or fresh condition for a long term.

Abstract: A low pressure relief valve made of elastomeric material is capable of relieving pressure in fixed and movable systems and is both economical and reliable.

Abstract: A container for use in culturing living cells includes an enclosable portion, or base, and a cover for enclosing the enclosable portion, a path defined between the junction of the enclosable portion and the cover and a gas permeable filter positioned within the path. Gases flow into and out of the container through the filter. Vapor phase hydrogen peroxide is degraded into water vapor and oxygen by a material associated with the filter to prevent hydrogen peroxide from entering the container.

Abstract: A medicament container/dispenser assembly includes a substantially non-collapsible main body defining a chamber for containing the medicament in liquid form, the main body having an upper portion and a lower portion; an opening formed in the upper portion; a liquid impervious, gas permeable membrane secured to the upper portion of the main body in sealing relation to the opening; a rupturable exit port formed in the lower portion of the main body. The assembly may also include a second opening formed in the upper portion of the main body in spaced relation to the first-mentioned opening and an elastomeric, puncturable, sealing material secured to the upper portion of the main body in sealing relation to the second opening. In a further embodiment, a conduit may be positioned adjacent the membrane at the upper section of the main body, and may contain a blower for supplying forced air to the membrane through the conduit.

Abstract: A lid for a container for gas-releasing liquids includes a sealing cap from a composite foil and having an opening closed by means of a foil of gas-permeable but liquid non-permeable material.

Abstract: A storage container or carrying case for contact lenses has a screw-on cap on which baskets for hanging the lenses vertically inside the canister are swingably suspended on a hinge plate which also holds the annular gasket for the cap closure when it is screwed down on the canister. A single helix thread on the outside of a tubular extension of the canister, for meshing with a similar internal thread on the rim of the cap, has a vertically running gap of a few degrees in width and a shallow channel is recessed in the flat flange surface just below the threading at the same orientation as the gap in the thread. The tightness of the closure is thereby readily adjustable to prevent leakage of a treating solution for the lenses from the closed canister in the event that it is knocked over while at the same time permitting escape of gas when the treating liquid includes hydrogen peroxide and a wafer is provided near the flat bottom of the canister to activate or modify the peroxide action.

Abstract: A venting closure (10) for containers (12) having a pour opening (14) defined by a circumferential rim (16) includes a top wall (20) having inner (22) and outer (24) surfaces. A side skirt (26) extends from the top wall (20) about the inner surface (22). A liner (28) is mounted adjacent the inner surface (22) for perfecting a seal between the top wall (20) and the circumferential rim (16) when the closure (10) is secured upon the rim (16) and over the opening (14). The liner (28) includes a gas impermeable non-hydrophobic portion (30) at least about the periphery of the liner (28) and an integral gas permeable hydrophobic portion (32) offset therefrom.

Abstract: Disclosed is a method of installing a reversibly porous, air-diffusible, water-restrictive, polymer plug in a port that extends through the wall of a nuclear waste storage container. The plug is inserted a predetermined distance, for example, with the aid of a screwdriver applied to a slot in the plug's outer face. When inserted, the plug prevents the loss of nuclear waste through the port while the air-diffusible nature of the material allows gases to pass through the material. The resultant venting action of the plug prevents the creation of pressure differences between the interior of the container and the environment. Thus, the likelihood of the container becoming overpressurized and leaking is minimized. In addition, the water-restrictive nature of the plug material restricts the ingress and egress of water from the container, reducing the likelihood of groundwater contamination during storage.

Abstract: A container or bottle closure in the form of a one-piece cap. The cap is formed with a flat top and a depending skirt having means for attachment to the container neck such as internal threads which mate with complementary threads on the container. An annular flange depends downwardly from the cap top to act as a sealing between the closure and the container. A vent is provided through the cap top to equalize the container pressure to atmospheric pressure. The vent takes the form of a plurality of orifices created by a laser beam which produces a hole of a diameter of 0.003 inches or less. Gas may flow equally well from the inside of the container outwardly or from the outside of the container inwardly, depending upon the pressure difference. The orifice diameter is sufficiently small to prevent the flow of a liquid product through the holes under the same pressure difference.

Abstract: A laminated air permeable container cap lining and sealing material comprising layers of pulp, aluminum foil, paper, wax, paper and air permeable heat sealing material.

Abstract: A container for effervescent products, especially kefir, is covered by a lid having openings for the escape of the gas. A layer, covering the opening, is affixed to the surface of the lid. A passage leading to the exterior and connected with the opening is disposed between this layer and the lid. By means of this arrangement, the gas can escape from the container without difficulty, but germs and dust cannot enter the container from the top since the opening is covered.

Abstract: An oxygen-scavenging system for use in a closure for containers is disclosed. The system is in the form of a closure liner that incorporates a catalyst disposed between an oxygen permeable barrier and a water absorbent backing member. The backing member rests against the inside of the closure and the oxygen permeable barrier rests against the mouth of the container and the catalyst is sandwiched between the backing member and the barrier. The backing member may be porous and the closure may be perforated to allow water to escape.

Abstract: A vessel is disclosed which is particularly suited to the sterility testing of drugs and medical equipment. The vessel comprises a glass container with a flat bottom and a plain cylindrical wall and a molded nylon cap which fits over the open end of the container. The cap has a skirt portion including a sealing ring which forms an airtight seal around the container and a top portion having a removable filter element held in place by a clip and which permits venting of the container.

Abstract: To provide a disposable container which can be prefabricated under sterile conditions, a pair of concentric plastic rings are formed with interfitting, interlocking projection and recess means permitting the rings to be snapped together, the rings being additionally formed with matching fitting surfaces to interpose the edge portion of a gas permeable membrane therebetween so that, when the membrane is placed on the outer ring and the two rings are snapped together, the membrane is irremovably held. Preferably, the outer ring is made of a softer, yielding plastic, the inner ring of a more rigid plastic, with a projection snapping into a groove formed on the inner, more rigid ring, and the matching clamping surfaces for the membrane forming a sinuous, tortuous path with a flexible projecting lip on the outer ring fitting into a recess to clamp the membrane and seal the membrane in the structure.

Abstract: A method for aseptically sowing small seeds or spores of green plants includes preparation of a sterile closed flask (one-half pint jar) containing a growth medium and having both a contamination-resistant vent and a puncturable, resealing membrane in its closure. The seeds or spores are placed in a hypodermic syringe and a sterilizing solution is drawn into the syringe and held in contact with the seeds long enough to sterilize their surfaces. If desired, the sterilizing solution is ejected from the syringe through a filter or otherwise so as to retain the seeds or spores, and replaced by a wash liquid. The syringe is fitted with a sterile hypodermic needle of sufficient bore size to pass the seeds or spores. The needle is inserted through the membrane, after sterilizing the outside surface of the membrane, and the sterilized seeds or spores are discharged directly from the syringe onto the growth medium in the flask.

Abstract: A method and equipment to implement said method for the production of microbes on a solid or liquid substrate, particularly mushroom mycelium growing on a grain substrate, the latter known as "mushroom spawn", are provided wherein the spawn is grown in a transparent, heat sterilizable plastic bag with a temporary screw-on closure thereon. The finished spawn is prepared for market merely by removing the reusable temporary closure and closing the top of the plastic bag container.

Abstract: A method for producing a foamed plastic product suitable as liner material for container closures, including the steps of extruding a polymer composition foamable at atmospheric pressure into an air space at atmospheric pressure and then into a liquid quenching agent for stopping foaming and for setting, wiping against the quenched composition, and maintaining the residence time of the composition in the air space as a function of bubbling from the composition during the wiping.Also a container closure having a gas impermeable shell and a polyvinyl chloride foam liner of a density of 0.67 to 0.72 grams per cubic centimeter in the shell.

Abstract: A blood filtration unit for filtering multiple units of blood comprising means for attaching the unit to a blood reservoir, a drip chamber and a segmental filtration compartment for filtering blood.

Abstract: A gas-permeable liquid closure for containers of liquids or solids which emit or absorb gas is provided by a film of an unsintered tetrafluoroethylene having a thickness of from about 0.1 to 3 mm., a fibrillated structure and a density of less than about 1.4. The film is supported across an opening of the container by a perforated cap or perforated sealing diaphragm which is disposed on either one or both sides of the film.

Abstract: A removable seal for a liquid container comprising a flexible liquid impervious sealing member for sealing an end of the container which sealing member is held against the end by a screw closure having a perforate top wall so that application of pressure upon the sealing member through the top wall disengages the sealing member.