Abstract: A tamper indicating closure according to the present invention includes a top wall and a skirt depending from the top wall. A tamper indicating band is connected to the skirt along a frangible line. The tamper indicating band includes a ring and at least one tab, the at least one tab having a bi-stable geometric shape. In particular, the tab includes a pair of extending members angled toward one another and connected by a transverse member. The shape of the tab allows it to be molded in a downward orientation and later folded to a stable, upward orientation without reheating or otherwise resetting the tab.

Abstract: A magnification viewer includes magnification loupes, which may be attached to the bridge of a pair of spectacles by a hinge/bridge mount. A main hinge tab is pivotally connected to mount, whereby the magnification loupes may be raised and lowered from the field of vision in front of the spectacles as desired. A hinge tab saddle slidably mounted to the main hinge tab permits adjustment of the loupes along the longitudinal length of the main hinge tab to thereby adjust the distance between the lenses of the spectacles and the loupes. Loupes are suspended by pylons from a pair of loupe mount bars and are pivotally adjustable about axes through the pylons to vary the convergence angle of the pair of loupes. Mount bars are adjustable via a thumbscrew attached to the hinge tab saddle, whereby the lateral spacing of the loupes may be varied to thereby accommodate a range of interpupillary distances. Magnification viewer may further include a light mount adapter provided on hinge tab saddle for attaching a light.

Abstract: A composition for use as a dental impression material including a polymerizable resin consisting of oligomers or polymers functionalized with groups curable by ring opening metathesis polymerization. These oligomers or polymers are end-capped and/or tethered with said functional groups. The composition also includes a ruthenium carbene complex catalyst, whereby the catalyst initiates ring-opening metathesis polymerization of the composition. The invention includes a paste/paste system in which a base paste includes the polymerizable oligomer or polymer and an inorganic dental filler system and in which a catalyst paste includes the catalyst dissolved in an inert solvent and an inorganic dental filler system.

Abstract: A composition curable by a metathesis reaction and comprising an olefin-containing resin system and metathesis catalyst. The resin system comprises siloxane-based oligomers or polymers end-capped and/or tethered with olefin functional groups that are capable of undergoing a metathesis reaction. The composition also includes a ruthenium carbene complex catalyst, whereby the catalyst initiates the metathesis reaction of the composition. The oligomer or polymer may be, for example, one or a combination of a telechelic polydimethylsiloxane end-capped with norbornenylethyl groups, a polydimethylsiloxane tethered and end-capped with norbornenylethyl groups, a tri-functional polydimethylsiloxane end-capped with norbornenylethyl groups, or a quadri-functional polydimethylsiloxane end-capped with norbornenylethyl groups. The catalyst may be, for example, a ruthenium carbene complex, such as 1,3-bis-(2,4,6-trimethylphenyl)-2-(imidazolidinylidene) dichloro(o-isopropoxyphenylmethylene) ruthenium.

Abstract: A child resistant closure and container according to the present invention include a container having a neck with an engagement mechanism such as an external thread. The container also includes at least one container lug, and preferably a pair of lugs disposed on opposite sides of the container. The child resistant closure includes a top wall with at least one skirt depending from the top wall. Locking teeth are disposed in a set on the inner surface of the skirt, with the locking teeth being arranged circumferentially around a portion of the inner surface, and the locking teeth being arranged axially offset from one another. The closure may also include a thinned-out region in the vicinity of the locking teeth to facilitate deformation of the closure.

Abstract: The present invention provides improved cathode material comprised of electrolytic manganese dioxide having high discharge capacity at high discharge rates and methods of producing such electrolytic manganese dioxide by electrolysis in an electrolytic cell. The methods are basically comprised of maintaining a heated high purity aqueous electrolyte solution comprising sulfuric acid and manganese sulfate in the electrolytic cell, the manganese sulfate being present in the solution whereby it contains in the range of from about 5 to about 50 grams of manganese per liter of solution. An electric current is applied to the electrodes of the electrolytic cell whereby the anodic electrode current density is in the range of from about 2.5 to about 6 amperes per square foot.

Abstract: A polymerizable composition including a resin system comprising oligomers or polymers functionalized with groups curable by ring opening metathesis polymerization, a metathesis catalyst, and a catalyst accelerator. In examples of the present invention, the composition includes a ruthenium carbene complex catalyst capable of initiating ring-opening metathesis polymerization of the composition and a silicone-based sulfosuccinate salt capable of accelerating the polymerization initiated by the catalyst. In another example, the invention includes a paste/paste system in which a base paste includes the polymerizable oligomer or polymer and the catalyst accelerator and in which a catalyst paste includes the catalyst dissolved in an inert solvent.

Abstract: A magnification viewer includes magnification loupes, which may be attached to the bridge of a pair of spectacles by a hinge/bridge mount. A main hinge tab is pivotally connected to mount, whereby the magnification loupes may be raised and lowered from the field of vision in front of the spectacles as desired. A hinge tab saddle slidably mounted to the main hinge tab permits adjustment of the loupes along the longitudinal length of the main hinge tab to thereby adjust the distance between the lenses of the spectacles and the loupes. Loupes are suspended by pylons from a pair of loupe mount bars and are pivotally adjustable about axes through the pylons to vary the convergence angle of the pair of loupes. Mount bars are adjustable via a thumbscrew attached to the hinge tab saddle, whereby the lateral spacing of the loupes may be varied to thereby accommodate a range of interpupillary distances. Magnification viewer may further include a light mount adapter provided on hinge tab saddle for attaching a light.

Abstract: The present invention provides a dental composite which has the high strength required for load-bearing restorations, yet maintains a glossy appearance, even after substantial wear. Through the use of particles having a mean particle size between about 0.05 &mgr;m and about 0.50 &mgr;m, the composite is useful in stress bearing restorations and in cosmetic restorations. The structural filler used is typically ground to a mean particle size of less than 0.5 &mgr;m and also includes a nanofiller having discrete particles of a mean particle size less than 100 nm to improve handling and mechanical characteristics. The preferred dental composites maintain their surface finish even after substantial use and also have the strength properties of hybrid composite resins.

Abstract: A process for preparing an improved pigment which is readily dispersible in paints and plastics concentrates is provided. In accordance with the process, a particulate pigment is mixed with water to form a slurry thereof, and a surface active agent is mixed with the slurry so that the pigment therein is coated therewith. A preferred surface active agent is a mixture of ethoxylated sorbitan derivatives, non-ethoxylated mono and diglycerides and ethoxylated mono and diglycerides. After the pigment has been coated with the surface active agent, the coated pigment is dried.

Abstract: A closure device for a plastic container includes a liner and a plastic closure. The liner is sealed to the neck of the bottle at the end face of the neck and along a portion of the outer surface of the neck. The plastic closure engages the liner to retain the liner against the neck during sealing and to seal the area between the liner and the closure top from liquids present during cooling of the container. The closure includes a top wall, an annular closure skirt depending from the top wall, an annular outer flexible seal depending from the top wall, and at least one annular pressure ring. The outer flexible seal retains an outer edge of the liner against the outer surface of the container neck and prevents ingress of liquids. The annular pressure ring engages the liner to retain the liner against the end face of the neck during sealing.

Abstract: A storage and mixing capsule 10 for separately storing a pair of ingredients therein and providing a structure for efficiently and reliably mixing the ingredients to form an amalgam. The capsule has two components: a first receptacle 12 and a second receptacle 14. The first receptacle 12 includes an interior compartment 16 for receiving an alloy and includes a piercing element 24 attached to a portion of the inner wall 26. The second receptacle 14 includes an interior compartment 30 for receiving mercury. The second receptacle 14 further includes a rupturable seal 38 disposed across the open bottom end 36 of the second receptacle 14. The capsule 10 further includes a conduit 54 extending from the capsule 10 which is used as a passageway for air to move from the interior of the capsule 10 to the exterior of the capsule 10 or for an inert gas to move from the exterior of the capsule 10 to the interior of the capsule 10 to create an interior atmosphere which prevents the oxidization of amalgam components.

Abstract: The present invention provides improved cathode material comprised of electrolytic manganese dioxide having high discharge capacity at high discharge rates and methods of producing such electrolytic manganese dioxide by electrolysis in an electrolytic cell. The methods are basically comprised of maintaining a heated high purity aqueous electrolyte solution comprising specific amounts of sulfuric acid and manganese sulfate in the electrolytic cell and maintaining the amounts of the sulfuric acid and manganese ion in the solution at a ratio of sulfuric acid to manganese ion greater than 2. An electric current is applied to the electrodes of the electrolytic cell whereby the anodic electrode current density is in the range of from about 2.5 to about 6 amperes per square foot and the high discharge capacity EMD produced is deposited on the anodic electrode.

Abstract: A dental composite having high filler loading and low shrinkage thereby providing good strength and marginal integrity. Through the use of prepolymerized filler particles in combination with a structural filler and a nanofiller, the composite exhibits very low shrinkage and is useful in stress bearing restorations and in cosmetic restorations. The structural filler used is ground to a mean particle size of less than 0.5 &mgr;m and the nanofiller has discrete particles of a mean particle size less than 100 nm to improve handling and mechanical characteristics. The prepolymerized filler particles also allow for less viscosity and better handling characteristics of the composite.

Abstract: The present invention provides a dental composite which has the high strength required for load-bearing restorations, yet maintains a glossy appearance, even after substantial wear. Through the use of particles having a mean particle size between about 0.05 &mgr;m and about 0.50 &mgr;m, the composite is useful in stress bearing restorations and in cosmetic restorations. The structural filler used is typically ground to a mean particle size of less than 0.5 &mgr;m and also includes a nanofiller having discrete particles of a mean particle size less than 100 nm to improve handling and mechanical characteristics. The preferred dental composites maintain their surface finish even after substantial use and also have the strength properties of hybrid composite resins.

Abstract: A closure device for a plastic container includes a liner and a plastic closure. The liner is sealed to the neck of the bottle at the end face of the neck and along a portion of the outer surface of the neck. The plastic closure engages the liner to retain the liner against the neck during sealing and to seal the area between the liner and the closure top from liquids present during cooling of the container. The closure includes a top wall, an annular closure skirt depending from the top wall, an annular outer flexible seal depending from the top wall, and at least one annular pressure ring. The outer flexible seal retains an outer edge of the liner against the outer surface of the container neck and prevents ingress of liquids. The annular pressure ring engages the liner to retain the liner against the end face of the neck during sealing.

Abstract: A two part composition for sealing and/or filling root canals. One or more elastomeric (meth)acrylate oligomers are mixed with one or more diluent comonomers, one or more radiopaque fillers and one or more polymerization initiator systems. One or more antimicrobial agents may also be included in the composition. The components are mixed, undergo a setting reaction and are subsequently cured. In use, the composition is easily removed from the tooth structure if rework is needed, yet provides a tight and effective seal in the root canal. The composition also has a desirable flowable consistency and exhibits good adhesiveness with a tooth substrate.

Abstract: A pipe coupling for coupling together two pipes in a fluid-tight manner includes a tubular casing, a tubular sealing gasket located within the casing, and screws for tensioning the casing around the gasket. The casing includes an inner tubular casing and an outer tubular casing, both of metal. A layer of fire-resistant thermally-insulating material is disposed between the inner and outer casings to form a fire shield.

Abstract: A composition for use as a dental impression material including a polymerizable telechelic oligomer or polymer curable by ring-opening metathesis polymerization, a filler system, and a ruthenium carbene complex catalyst, whereby the catalyst initiates ring-opening metathesis polymerization of the composition. The invention includes a paste/paste system in which a base paste includes the polymerizable telechelic oligomer or polymer and a filler system and in which a catalyst paste includes the catalyst dissolved in an inert solvent and a filler system. The telechelic oligomer or polymer may be, for example, a polydimethylsiloxane end-functionalized with norbornenyl groups. The catalyst may be, for example, a ruthenium carbene complex with a ligand having a basicity higher than tricyclohexylphosphine. The composition of the present invention exhibits reduced sensitivity to sulfur impurities.

Abstract: In one aspect of the invention, a dental amalgam capsule includes a body, a cap, a dental amalgam alloy, and mercury. In further detail, the body has a hollow interior with an open first end which includes an opening surrounded by an end wall. The cap has a hollow interior with an open first end and an interior surface. The interior surface includes an annular recess disposed about a longitudinal axis of the cap, with the annular recess including a sealing surface angled at less than 90 degrees relative to the longitudinal axis. The sealing surface is capable of contacting at least a portion of the end wall, thereby forming a seal with the end wall.