Abstract:
A gelled solid adhesive for coating substrates, typically paper. The adhesive can be made available in stick form and is easily applied in even coats to any surface area of the substrate. The adhesive has sufficient tack enabling the coated substrate to instantly adhere to essentially any free contact surface upon gently pressing the substrate to the free surface. The adhesive coated substrate is easily removable from the contact surface by manually lifting it therefrom. The adhesive permits readherence of the adhesive coated substrate to the same or different free contact surfaces. An adhesive coated paper substrate will readhere many times to free paper contact surface. The preferred gelled adhesive product is formed of an aqueous dispersion of components which include a rubber such as natural rubber latex component, a friction reducing agent, a tackifier, an antioxidant, a gelling agent and surfactant. Preferred classes of tackifiers are anionic aqueous dispersion of hydrogenated esters of rosin and anionic aqueous dispersion of esters of hydrogenated rosin.
Abstract:
Determination of whether or not a test substance, such as a pregnancy antigen (AG), is present by combining (1) the test substance (AG) with a first labeled material, e.g. a first enzyme labeled antibody (ABA-E1) in a vial (30). The resulting product is added (2) to a second labeled material, e.g. a second enzyme labeled antibody (ABA-E2), bound to a membrane (22) which overlays a porous member (21) both within a housing (10) to which a substrate is applied (3) from vial (40) to react with one of the labels and produce a reagent that in turn reacts with an indicator and the other label to provide a test indication such as a color change.
Abstract:
An ion generator for the formation of electrostatic images includes two electrodes (a "control electrode" (13) and a "driver electrode" (12)) at opposite faces of a solid dielectric member (11) which are electrically actuated to form ions in an air region adjacent the control electrode (13); a third, "screen" electrode (21); and an additional, "deflection" electrode (31), which together with the screen electrode (21) modulates ion flow to an imaging surface. Ions of a given polarity attracted toward the imaging surface by an accelerating field resulting from a direct current potential of the control electrode (13). The screen electrode (21) is maintained at a screen potential (28) to control passages of ions through one or more apertures (22) therein, while a further, deflection potential (31) applied to the deflection electrode (31) provides an additional lever of control over the size, shape, and location of the resulting electrostatic images. The deflection electrode (31) may take the form of a conductive member on one side of the ion path, or two or more conductors straddling this patth. This arrangement provides an additional level of multiplexing, simplifies the requirements of electronic drive circuitry, and improves image definition.
Abstract:
A method of metallizing a substrate by applying a metallic film to the substrate and measuring the film at a plurality of different lateral positions of the substrate by inducing an eddy current in the film and detecting the magnitude of the film to provide an indication of film thickness.
Abstract:
A label carrier web transport for use in heat transfer decorators and the like, in which labels are optically registered to control web transport. A timing assembly (80) coordinates the rotation of a cam shaft (76) with the actuation and deactuation of clutch and brake assemblies within a metering roll (30). An optical scanner (60) trained on the web registers a predetermined contrast location within a label (110) to actuate the brake (32) and deactuate the clutch (42), subject to the presence of an enabling signal from the timing assembly. The metering roll, in combination with a reciprocating label shuttle (20), provides intermittent web motion to achieve controlled label advance. An alternative label transport system (210) incorporates a capstan web drive (230) in lieu of the metering roll, with a microprocessor (290) to control various machine functions including intermittent web transport.
Abstract:
Method and apparatus for the metallization of support members, such as paper sheeting and other cellulosic products. A metallic film (13) is transferred to the paper support (21) from a plastic sheet carrier (11) and adhered to the paper by a thermoplastic material (24). The carrier, typically of stabilized plastic (12) with a releasably adhered film of metal (13) and an overlay of thermoplastic adhesive (24) with the paper support. Separate metallic films may be transferred simultaneously from a plastic sheet carrier to separate paper supports and the transferred metallic films ad ered to the respective paper supports by a thermoplastic material. The carrier therein may typically be of stabilized plastic with an adhered film of metal on opposite surfaces. Pressure and/or heat is applied to the composite which is subsequently cooled and the carrier (12) stripped away to leave the desired metallic layer on the receiving surface of the paper support. This transfer procedure overcomes the objections associated with metal foil laminates and is particularly suitable for metallizing support members, like paper, which are difficult to metallize directly because they release significant amounts of vapor during conventional vacuum metallization. The results are also superior to those realized using an adhesive with dispersed metal particles, and the need for curing of the adhesive is eliminated.
Abstract:
An economical lightweight looseleaf binder combines the functionality of a standard ring binder with easy-to-use characteristics of report covers. The cover is folded to define front and back panels (13, 15) as well as a spine portion (14), and additionally includes a crease (18) at the longitudinal center line of the two ring assemblies which are both secured to the back panel. The ring assemblies (20, 30) include a series of hooks (25, 35) having complementary notched profiles which firmly engage one another when closed, yet may be easily disengaged through flexure of the cover. In one construction, the binder comprises a pressboard cover to which is attached a pair of plastic ring assemblies. The hooks are configured to permit filler sheets to lie flat and to facilitate transfer of sheets from one side to the other.
Abstract:
A loop attachment in which each attachment has a plurality of filaments, joined in a loop by a seamless connector. Each attachment is insertable through at least one object and has an elongated filament that extends from a flattened object-penetrating part to the seamless connector. The flattening of the object penetrating part in an area proximate its junction with the filament permits the filament to bend against the object penetrating part in a compact configuration. The filament has a flattened cross section with a minor axis parallel to the axis of elongation of the object penetrating part, thereby to further facilitate the bending of the filament against the object penetrating part.
Abstract:
Method and apparatus for dispensing of attachments comprising a pair of side members linked by a connector. A roll of fastener stock is fed to a reciprocatively driven slide head assembly at which the roll is advanced over an elastomeric feed belt to a pair of needles secured to a shuttle. Once inserted in the needles, an individual attachment is severed from the stock, and displaced over a preset distance by the shuttle into the path of a pair of ejector rods. The ejector rods force the side members of the attachment out of the needles for insertion in a fabric or other workpiece at the bottom of the head stroke. On return stroke of the head, the needles are withdrawn, ejector rods retreat, and the shuttle returns to its severing position in a manner to avoid mechanical interference. This design uses an electric motor driven fastener dispensing head, actuator slide and associated linkages for actuating the various mechanisms either on an on-demand or continuous basis. Reliability is improved by severing the attachment stock in the needle, and transferring the severed attachment to its insertion location.
Abstract:
A medium formed by a mixture of polymeric binder with conductive metal and either semiconductive particles or galvanic couple alloy particles that can be coated or printed on a substrate to convert electromagnetic radiation to heat without arcing and produce increase heating of foods. Conversion efficiency can be controlled by the choice, thickness, pattern and amount of materials used in the medium. The medium can be formulated to be used repeatedly without burn out or can be formulated to be used only once after which it becomes microwave inert. The conductive particles are typically aluminum, copper, zinc and nickel; the semiconductive particles are typically carbon, titanium carbide, silicon carbide and zinc oxide; and the galvanic couple alloy particles are typically aluminum-nickel alloy, aluminum-cobalt alloy and aluminum-copper alloy.