Abstract: A one-piece plastic can lid 1, for use with a container of the lever ring type, has a periphery 20 which contacts an annular portion of the can wall 15, so as to center the lid 1 accurately relative to the can body. A recess 25 may be provided to enable a lever to be used to pry the lid 1 off the container. The recess 25 desirably includes a membrane 27 which is pierced when a lever is first used to open the container, so that rupture of the membrane 27 makes evident any unauthorized opening of the container. The lid 1 may also include one or more fins which form a seal in conjunction with an annular part 14 of the lever ring 16 of the container.

Abstract: System for protecting machine parts, such as threads, from physical and chemical damage. The parts to be protected are cleaned, coated with a separating agent, and a mold is placed around them. A protective material is inserted in the interspace between the mold and pipe end. The protective material forms a tough, protective jacket. If desired, the mold can later be removed by means of a tear-open element or integrated weak spots. For the protection of pipe interiors, plastic material can be pressed into the end of the pipe such that it seals against the inside lining of the pipe.

Abstract: An opening stopper of elastomeric material, especially for sealing lacquer outflow openings in automotive vehicle bodies, comprising a closed bottom, an elastically shapable flange covering the edge of the workpiece opening, a collar connecting the bottom to the flange, and a shoulder disposed at the outer surface of the collar, said shoulder engaging behind the oppositely disposed opening edge, wherein the shoulder is formed by a circumferentially extending free edge of a lip configurated like a conical disc which is tied at a location level with the countersunk bottom and extends obliquely outward towards the flange.

Abstract: A plug for sealing holes, particularly in aircraft fuel tanks, having an elastomeric tapered body member of circular or rectangular cross-section, formed of a plurality of integral tapered portions of successively reduced taper extending substantially from one end to the other end of the body member, each tapered portion having an exposed outer edge, providing a tapered and barbed configuration. A lead-in tip is provided at the tapered end of the body member. In use, the plug is inserted into and pulled through a hole to be plugged and into tight contact with the inner surfaces and edges of the hole. When the tensile pull is relaxed, this allows the plug to expand into contact with and grip the inside hole surfaces and hole edges, to form a positive seal. Excess plug material is trimmed off on one or both sides of the hole, and a coating of sealant material can be applied on the outer surfaces of the trimmed plug at opposite sides of the hole for additional sealing.

Abstract: A cover for openings in a partially assembled missile or aircraft structure to prevent entry of chips, oil or other debris during further machining or other manufacturing operations. The cover has a central elastically compressible plug section adapted to fit snugly in an opening and an outwardly extending flange around one end of the plug. When the plug portion is inserted into the opening, the flange covers a ring of bolt holes surrounding the opening. The plug is formed from an elastic closed cell foam material and preferably has a cross-section slightly larger than the opening so as to be compressed slightly when inserted in the opening. The cover is coated with an elastomeric polyurethane coating to prevent flaking of the foam plug when inserted and removed from the opening and to prevent adhesion of contaminates to the cover. Because of the compressibility of the plug, each cover can be used with similarly configured openings of slightly varying sizes.

Abstract: A toggle-action end plug for a carrier tube used in transporting unmounted semiconductor packages.

Abstract: A resilient stopper (40) for retaining IC's (12) in magazine (10) having a rectangular section (16) of height (h) and width (w) is disclosed. The stopper has a tubular body portion (42) of thickness (t), inner diameter (d) and width substantially (w); and a tab (50) within the stopper of thickness (b) and length (L) extending inwardly from a trailing edge area (46) of the body portion (42); wherein 2t+b>h to effect a positive interference fit of the stopper within the magazine.

Abstract: A plastic resin hole plug to fill a hole in a flat thin panel comprises a one-piece unitary injection-molded plastic member having a top dome closure wall whose bottom surface has a flat ledge which rests on the panel and an undercut ring. The plug has a tubular shank portion which extends from the top closure wall portion and whose outer face retains the plug in the hole. The shank's outer face has a first circumferential band canted inwardly and a second circumferential band joined thereto which is canted outwardly. At least one, and preferably two, side flats are formed on the shank portion, which flats flex inward when the plug is inserted into the hole.

Abstract: A capillary tube containing a sample is anaerobicly sealed by means of closure caps each comprising an end wall and a skirt portion. Each open end of the capillary tube is sealed by inserting the open tube end into the cap skirt portion, and in order to avoid that a volume of air is forced into the capillary tube, the space defined between the open tube end and the cap end wall is vented to the atmosphere through one or more venting passages defined in the walls of the closure cap or between the inner surface of the cap skirt portion and the adjacent outer peripheral surface of the capillary tube. The open tube end is brought into sealing engagement with sealing means on the cap end wall, and frictional engagement established between the inner surface of the cap skirt portion and adjacent outer peripheral surface parts of the capillary tube secures that said sealing engagement is maintained.

Abstract: A flotation restraint apparatus for use in a body of water comprising a longitudinal buoy of sufficient buoyancy to provide flotation along the longitudinal axis of a swimmer, an annular flotation collar connecting to the longitudinal buoy and extending about the body of the swimmer, a restraint line having one end attached radially proximate the point of attachment of the longitudinal buoy to the annular float collar, and an anchor connecting the other end of the restraint line to a fixed object.

Abstract: In a liquid storage tank having a floating roof with a circular rim, a substantially ring-like vertical cylindrical shoe adapted to slide along the inside wall surface of the tank outwardly from the roof rim, a primary flexible seal extending from the roof rim to the shoe, and with the shoe containing a plurality of vertically positioned spaced apart flexures in the form of an open ended trough which terminates below the shoe top edge and with a longitudinal opening substantially flat against the tank wall, the improvement comprising a flexure closure of resilient polymeric material with a lower body portion inside the open top end of a substantial number of the flexure troughs, with the lower body portion being in contact with the trough; and with the flexure closure having a thin flat upper portion placed by the shoe inside surface.

Abstract: A flexible cap, made of soft vinyl or rubber, slides over the ramp of the bleeder valve hex and grips tightly on the bleeder valve threads. The cap has matching threads molded into the cap inner wall. The cap is pushed over the bleeder valve and then screwed tightly against the brake housing face. Serrations on the cap sealing face may be filled with liquid sealant compressing against the casting. Vertical serrations are formed on the outer surface of the cap to provide a hand grip for screwing the cap in place.

Abstract: A closure of flexible molded plastic material is adapted to seal around the mouth at the open end of a storage container and comprises a main closure wall having an outer periphery and an inside surface adapted to span across and close the container mouth when inserted into the open end. The main closure wall includes a central portion deflectable inwardly toward an opposite end of the container when initiating a seal across the open end thereof. A peripheral flange is formed around the main closure wall to extend transversely away from the inside surface and includes a deflectable depending skirt having a free end portion spaced outwardly of an outer peripheral edge and the inside surface of the main closure wall separated therefrom by an annular groove.

Abstract: A pinch cap has a top wall with edge portions which form a circumferentially-extending rim. A pair of spaced, D-shaped, finger-receiving wells open through the top wall. The wells are formed by curved and straight side walls which depend from the top wall, and by a pair of D-shaped bottom walls. Locking formations are provided on the outer faces of the curved side walls for holding the cap in place in a container opening. During insertion of the cap into a container opening, the locking formations engage portions of the container located at spaced positions around the container opening and cause the normal configuration of the cap to distort briefly as is needed to permit the locking formations to pass through the container opening.

Abstract: A child-resistant closure unit is provided. The unit includes a container having a generally central opening and a resiliently flexible cover for the opening. The cover has a bottom flange on its periphery which engages the bottom of a curved surface on the periphery of the opening. Simultaneous depression of the cover and the pulling of a tab connected to the top rim of the cover disengages the cover. No specific orientation is required to either engage or disengage the cover.

Abstract: In accordance with the present invention, there is provided a novel and improved snap-on plug for an apertured panel. The snap-on plug comprises a shank and a flange extending laterally from one end of the shank. The shank is hollow and adapted for insertion within a complementary panel aperture. A groove is formed in the outer surface of the shank at a location adjacent the flange and adapted for engagement with a panel portion around the aperture. The shank is provided with an inner surface portion upon which a force is applied when the plug is to be inserted into the panel aperture. The inner surface is inclined with respect a plane in which the groove is positioned such that upon insertion of the plug into the complementary panel aperture the groove is gradually brought into engagement with the panel.

Abstract: A closure for an aperture in a container wall having an annulus of gasket material around the aperture, has a plug portion and a peripheral flange extending axially and outwardly of the plug portion to terminate in a feather edge adapted to engage the gasket material when the plug portion is inserted in the aperture.In order to seal the aperture, the gasket material applied to the wall to surround the aperture and the plug portion of the closure is force fitted into the aperture to hold the feather edge of the flange in sealing engagement with the gasket material.The closure may be used to close cans of beverages and permit easy access to the contents by pushing the plug portion into the can.

Abstract: An ear protection plug of elastic material which is characterized in that it is in the form of a closed gas-filled hollow body of approximately ovoid longitudinal section, so as to have a first relatively thick end portion (3) and an opposite relatively narrow second end portion (2). Each end portion has a decreasing cross-sectional diameter in the direction towards the respective end, such that the plug has two opposite insertion ends and permits optionally inserting the ear protection plug either with the thick or with the narrow insertion end in the ear canal to fit ear canals of varying size and/or form.

Abstract: A cap comprises a cap main body made of hard material having an injection hole at the center thereof. A rubbery membrane having a hole which is always closed is attached to the inside of the cap body. The cap prevents leakage of injected lubricant and entry of fibers or dust.

Abstract: The present invention is directed to liquid-level indicating windows, especially suitable for reservoirs for master cylinder, which are characterized in that a container for housing a liquid is provided with a hole bored therein to which the liquid-level indicating window is made fit. The body of the liquid level device projects outside the container and the liquid-level indicating window has on its inside wall, at the liquid-level indicating section, a sign portion which is different from the other portions of the liquid-level indicating section in the light-path length and which is made of a material almost the same in refractive index as the liquid to be contained in the container.

Abstract: A sealed container provides with a plug valve which employs a heat responsive band having one end attached to the side of the plug which is on the outer side of the plug when the plug is positioned in the container wall. The other end of the band extends around the edge of the plug holding the edge away from a valve opening in the wall of the container. This inner end of the band is connected through a wire to a fusable pin centrally positioned on the inner side of the plug. At the desired time, the fuse melts releasing the wire and the ban shrinks or retracks, releasing the edge of the valve member allowing it to seal against the container wall.

Abstract: An end cover for covering and protecting a drum having an upper tray with a circumferential lip. The end cover includes a circular top provided with an outer circumferential edge. The diameter of the top corresponds to the diameter of the drum to be covered and has an axis of symmetry perpendicular to the plane of the top. The end cover also includes a peripheral member comprising a convergent linear wall integral with the outer edge of the top, a divergent linear wall joined to the convergent linear wall and forming a circumferential V-shaped groove opening toward the exterior of the walls, and flat ribs spaced from one another around the V-shaped groove, each of the ribs being disposed in a vertical radial plane passing through the axis of symmetry, protruding from and being integral with the walls on either side of the apex of the V-shaped groove formed by the walls, and being positioned within the V-shaped groove to add rigidity to the walls and for preventing the walls from spreading apart.

Abstract: A stopper for plugging an opening formed in a panel comprises a flange portion for pressed contact with the surface of the panel and an insertion portion extended downwardly from the lower surface of the flange portion and adapted for insertion into the opening in the panel. The insertion portion is formed in the shape of a boss, provided in the interior thereof with an annular groove which opens into the upper surface of the insertion portion, and gives rise to outer circumferential walls of a small thickness. The outer circumferential walls are provided with a plurality of internally hollowed engaging projections disposed in the radial direction and are provided on the outer wall surfaces thereof with engaging claws adapted for fast engagement with the opening in the panel. The stopper thus constructed possesses watertightness and ability to provide tight fastening and is easy of operation.

Abstract: A sealing mechanism and method for closing the case of an electrical component including a metal disk and an elastomer part wherein the elastomer part as measured from the inside of the metal disk is at least twice as thick in the axial direction as the metal disk, and, prior to assembly, the elastomer part covers and surrounds the radial outer rim and at least the peripheral rim region of the outside of the metal disk axially opposite to the inside of the case.

Abstract: To eliminate contamination of foreign matters deposited on the surface for a rubber stopper for tight sealing for medical purpose as for tight sealing of a medical injection liquid bottle, a vulcanized film of propylene-tetrafluoroethylene-glycidyl vinyl ether copolymer rubber is coated partially or wholly onto the surface of the rubber stopper. Vulcanization of the copolymer rubber can be carried out only by heating in the absence of a vulcanizing agent, and a vulcanized film with a good adhesiveness to the rubber stopper and a good sliding characteristic can be formed thereon.

Abstract: A rubber stopper for sealing comprises a substrate of a rubber stopper which is partially or wholly coated with a fluorine-containing elastomer comprising a graft copolymer having rubber-like elasticity and having chemical linkages of fluorine-containing polymeric segments and organopolysiloxane segments at reactive sites of said segments.

Abstract: The invention relates to a container and lid combination in which a flexible skirt is injection molded with either the container or lid to provide the combination with a seal. The skirt extends either radially inwardly from an inner container surface or radially outwardly from the underside of the lid, and is so shaped that as the lid is located about the container rim the skirt is deflected to a position in which it is biased because of the elasticity of the elastomeric material from which it is constructed to press against the inner container surface or underside of the lid in sealing engagment. In a preferred embodiment a circumferential bead is molded to one of the inner container surface and underside of the lid, and co-operates with the skirt to releasably secure the lid to the container.

Abstract: A sealing plug device for fitting holes, orifices, and openings formed in panels, of the dish plug type having a bottom portion, a lateral wall, engagement means on said wall, an elastic collar to be applied against the forward edge of the hole and thermofusible means disposed between the panel and said elastic collar; said sealing plug device comprises application or collar means having in particular a peripheral channel, thermofusible means having in particular a peripheral cord liable to be crushed and melted between said channel and panel within the space that may occur between said sealing plug device and the hole to be fitted in, so that after cooling such device becomes perfectly integral with said panel in said hole due to solidification of the thermofusible means to be exact required shape without any loss of material whatever the planarity and position in space of said panel may be.

Abstract: The problem of providing tight-fitting closures for containers is solved by the closures and the methods of installing and removing closures utilizing a closure (20) which includes a central portion (21) and an annulus portion (22) hingedly connected to the central portion by a hinge (23) to enable at least a portion of the annulus portion to contract during insertion and removal operations. The annulus portion pivots to an expanded position to become compressed between the central portion and the orifice surface (25). A retaining portion (68) in a modified form of closure serves to hold the outer edge of the annulus portion relative to movement of the central portion and to prevent premature removal. In installing and removing, the closure is readily adapted to be turned at an angle to the axis of the orifice for easier insertion and removal and for bung-type closures the filler apparatus for a beer barrel is useful in installing these closures.

Abstract: Disclosed is a bright welded seam can of tinplate having a side seam formed by welding, wherein each of the inner and outer surfaces of the side seam has an outermost surface layer having a thickness of 50 to 400 A and being composed of oxides and a subsequent intermediate layer composed of an iron-tin alloy, which has a thickness corresponding to 5 to 100% of the thickness of the whole tin layer in the tinplate blank, and wherein the inner and outer surfaces of the side seam have a reflectance corresponding to at least 60% of the reflectance of the tinplate.This bright welded seam can is excellent in the appearance of the seam, the corrosion resistance and the adhesion of the coating.

Abstract: A container and closure combination includes a container with an inside wall roll or bead and a closure adapted for clasping said bead. The closure comprises a central discoidal portion adapted with an outwardly and upwardly flaring first section facilitating insertion of the plug into the container, a bead formed by connecting the first section with an inwardly and upwardly flaring second section, a groove formed by adapting the second section with an outwardly and upwardly flaring third section which is in turn adapted with a closure rim and skirt.

Abstract: A plug for obturating the lift hole of poured concrete drain pipes or conduits. The plug, preferably made of a plastic molding, comprises a generally thin head in the form of a plate and a shank projecting from the lower surface of the plate. The shank has at least two substantially thin fins extending radially from a common centerline, each having a lateral edge engageable with the rim of the hole obturated by the plug. Preferably, the shank is cruciform and is provided with three or more fins.

Abstract: A container is provided with a valve opening at its bottom wall to permit steam to circulate into the container and to permit any condensation to drain from the container while the valve is open. The valve is closed by an expandable chamber in response to the pressure drop at the end of a sterilizing cycle. A valve controlling the flow of steam into the expandable chamber closes when subjected to the high temperature steam, thus capturing steam within the chamber. This steam expands when the pressure drops to close the valve in the container. The container lid and gasket permit steam to be withdrawn from the container but prevent air flow into the container. A vacuum created in the container at the end of the sterilizing cycle holds the container lid in place and holds the valve closed.

Abstract: A container lid is released at a desired point in a sterilizing cycle with the actuating movement being provided by an expandable chamber having a quantity of sterilizing environment captured during the sterilizing cycle.

Abstract: A plug seal for sealing a housing which has a hardness at least slightly less than the hardness of the plug seal is disclosed wherein the plug has a predetermined geometric shape and has first and second portions having corresponding first and second perimeters, the second perimeter being greater than the first perimeter, and the plug has a groove wherein as the plug is inserted into the housing the second portion of the plug will force a portion of the housing into the groove for providing a fluid tight fit.

Abstract: Combination and method for mixing a blood sample and an anticoagulant within a collection tube and for then capturing, removing and discarding the mixing element without danger of direct contact between the blood sample and the technician. The full combination includes a blood collection tube, at least one resilient end cap for the tube having a cavity which extends well beyond that tube when the cap is in place, a magnetic element slidable within the tube and receivable in the cap, and a magnet for shifting the magnetic element. After being directed into the cap following a mixing operation, the blood-covered magnetic element may be held within the cavity by finger pressure on the cap and discarded along with the cap.

Abstract: An end unit intended for packaging products in an associated can or container wherein the product is of the type producing gases so as to normally increase the internal pressure within the can after the closing of the can. The end unit has a vent opening therethrough and is normally closed by a closure member which is held in contact with the container wall surrounding the vent opening by a strip of stretchable material having a memory. When pressure within the container exceeds a predetermined pressure, the closure will move out of the container sealing position under the restraint of the strip, and the container will be vented to the atmosphere.

Abstract: A stopper for a pressure container comprises a hole fitting and an inner core for sealing engagementin a generallycylindrical inner bore of the hole fitting. The hole fitting has an annular external groove for receiving a generally circular edge of the container which edge defines an opening in the container. The part of the hole fitting immediately below the groove is of larger external diameter than the opening in the container, and the core has a non-sealing section of less external diameter than the internal diameter of the adjacent length of the bore. Such a stopper is easier to insert in the container opening.

Abstract: A capacitor closure disc unit comprises a metallic plate and a layer of rubber-elastic insulating material injection-molded around its periphery. The plate is dish shaped and includes a flat flange. The recessed central part of the plate forms a centering area which, through the help of centering projections, aids in centering the plate in a mold cavity. The outer surface of the recessed portion can be very slightly concave so that contact thereof with a planar mold section forms a circular edge seal during the injection-molding step.

Abstract: A smoking apparatus for use with a disposable can containing a filtering medium such as water, the apparatus including a flexible stopper member for sealingly engaging the peripheral edges of a generally keyhole shaped opening in the top of the can, the stopper having first and second passageways therethrough, a first tubular member extending into one of the passageways, a second tubular member extending through the other passageway, one end of the second tubular member extending into the can for a distance sufficient to extend into the filtering medium, the other member extending exteriorly of the container and being attached to a receptacle or bowl for holding smoking material.

Abstract: A container such as a beverage can has a flat top. An opening formed in the top has an inwardly reverted flange which prevents a sharp edge. The closure comprises an inside disc of a diameter greater than the diameter of the opening, and an outside button also of a diameter greater than that of the opening. The button has a raised dome like top, and the button and disc are joined by a narrow stem of a length such that both the button and disc tightly press against the can top and flange, respectively.

Abstract: Closures having a generally triangular shape corresponding to tab opening cans include a seal plug with depending sealing lips and an internal cavity which facilitates installation and provides a sealing force. A resilient spring member may also be imbedded in the closure about the cavity to increase the sealing. The closures are resealable and may be reusable. A pouring or drinking spout and protective lip structure is also disclosed. The closures are opened by means of handles which define the cavity. The handles may include a structure for locking the handle on the rim of the can during dispensing. The closures are suited for use on a wide variety of can aperture sizes.

Abstract: A closure plug is disclosed which is especially adapted for use in retaining insulation inside the cavities of refrigerators and like appliances. The plug includes a number of petal-like flaps which are conically arrayed and originally point relatively outwardly. When an insulation nozzle is pushed against the petal flaps, the flaps are forced inwardly, and splay apart to permit nozzle insertion through the plug. After the nozzle is withdrawn, the petal flaps return to form an inverted cone pointing relatively inwardly. Beveled petal flap sides provide planar inter-petal contact and structural conical strength to resist the outward flow of insulation. The plug is fastened to a cavity-defining wall by a base having a polygonal cross-sectional shape substantially coextensive with a polygonal wall aperture, and a head of polygonal cross-sectional shape at least congruent with the wall aperture but angularly offset with respect to and depending from the base to engage the wall and retain the plug on the wall.

Abstract: Connectors and end caps are provided to connect adjacent roof ridge ventilator sections and to close the ends of the assembly. The connectors include a cutout, intermediate wall, an outer jacket and inner sleeve defining slots to receive the ends of adjacent ventilator sections. The end caps include a deflectable wall having a central depression and bulge. An outer end cap jacket and inner end cap sleeve define a channel to receive the end of the ventilator assembly.

Abstract: A bung for the bung orifice of a pressurized beer barrel and the like including an outer shell having an external wall surface adapted for sealing engagement with the wall of the bung orifice and a closure head extending radially inwardly from an attachment at an intermediate point on the inside of the outer shell. The outer shell and closure head preferable are an integral molded plastic unit exhibiting yieldability and resiliency.

Abstract: The inflatable cell portion(s) of an air cushion type undercarriage for airplanes, air cushion vehicles, or the like, of the type which are formed with air outlet openings in the ground tangent areas thereof are individually provided with air flow control devices having highly abrasive tear-resistant bottom surfaces disposed externally of the cell fabric, in lieu of the conventionally employed coverply or "wear strips". The devices of the present invention receive the ground contact abrasion and tear-inducing stresses normally imposed upon the cell fabric, and protect the latter in improved manner; and are simply snap-fitted (and thereby detachably locked) into the cell fabric apertures, and may be easily replaced as required.