Abstract: Methods for etching metal oxide films, especially tin oxide.

Abstract: An apparatus for high speed packing of envelopes is disclosed. The apparatus includes an envelope flap opening assembly which facilitates the opening of each envelope by a finger of an opening element as the envelope passes through packing apparatus. Each envelope may then be conveyed into a first staging assembly where the envelope is stopped, allowing a freely rotating conveyor to force the envelope into contact with an ejection conveyor to direct the envelope from the first staging assembly. The envelope is then transported to the packing assembly by an intermediate conveyor having a plurality of distinctly and selectively driven conveyors to allow staging of the envelopes along the intermediate conveyor. A quick and efficient envelope packing assembly then packs the envelopes and ejects the envelope to an exiting conveyor which seals each packed envelope.

Abstract: Metal oxide films are etched with a metal and an etch liquid containing an acid and a metal penetration control agent.

Abstract: Methods for etching metal oxide films, especially tin oxide.

Abstract: Slotted cruise airfoil technology allows production of a substantially unswept wing that achieves the same cruise speed as today's conventional jet airplanes with higher sweep. This technology allows the wing boundary layer to negotiate a strong recovery gradient closer to the wing trailing edge. The result is about a cruise speed of Mach=0.78, but with a straight wing. It also means that for the same lift, the super velocities over the top of the wing can be lower. With very low sweep and this type of cruise pressure distribution, natural laminar flow will be obtained. In addition, heat is transferred from the leading edge of the wing and of the main flap to increase the extent of the natural laminar flow. The slotted cruise wing airfoil allows modularization of the wing and the body for a family of airplanes. The unsweeping of the wing significantly changes the manufacturing processes, reduces manufacturing costs and flow time from detail part fabrication to airplane delivery.

Abstract: An apparatus for high speed packing of envelopes is disclosed. The apparatus includes an envelope flap opening assembly which facilitates the opening of each envelope by a finger of an opening element as the envelope passes through packing apparatus. Each envelope may then be conveyed into a first staging assembly where the envelope is stopped, allowing a freely rotating conveyor to force the envelope into contact with an ejection conveyor to direct the envelope from the first staging assembly. The envelope is then transported to the packing assembly by an intermediate conveyor having a plurality of distinctly and selectively driven conveyors to allow staging of the envelopes along the intermediate conveyor. A quick and efficient envelope packing assembly then packs the envelopes and ejects the envelope to an exiting conveyor which seals each packed envelope.

Abstract: A stage and thread assembly is disclosed for use in a high speed envelope packing apparatus. The assembly receives from the side, a single envelope with flap open. The assembly precisely aligns and positions the envelope in a pre-stage area via a plurality of entry ramps, continuously running belts, and back stops, correcting any misalignment. Once positioned in the pre-stage area, the apparatus stages the envelope in a position above the thread roller of the high speed packing apparatus so that the envelope can be threaded on the packing plate for insertion of material into the envelope. The staging of the envelope is achieved via a plurality of rollers including, d-rollers, flipper rollers, and stage rollers. The envelope is staged in a direction perpendicular to the direction of entry of the envelope.

Abstract: Metal oxide films are etched with a metal and an etch liquid containing an acid and a metal penetration control agent.

Abstract: An apparatus for high speed packing of envelopes is disclosed. The apparatus includes an envelope flap opening assembly which facilitates the opening of each envelope by a finger of an opening element as the envelope passes through packing apparatus. Each envelope may then be conveyed into a first staging assembly where the envelope is stopped, allowing a freely rotating conveyor to force the envelope into contact with an ejection conveyor to direct the envelope from the first staging assembly. The envelope is then transported to the packing assembly by an intermediate conveyor having a plurality of distinctly and selectively driven conveyors to allow staging of the envelopes along the intermediate conveyor. A quick and efficient envelope packing assembly then packs the envelopes and ejects the envelope to an exiting conveyor which seals each packed envelope.

Abstract: Masked tin oxide films are etched with an etchant composed of hydrochloric acid and a penetration control agent. The exposed metal oxide film is reduced to metallic tin by the action of active hydrogen (H0) produced in the reaction of zinc with acid, and etching stops when the metallic tin becomes impenetrable to H0.

Abstract: Masked tin oxide films are etched with an etchant composed of a zinc metal, an acid and a Ni++ penetration control agent. The exposed metal oxide film is reduced to metallic tin by the action of active hydrogen (H0) produced in the reaction of zinc with acid, and etching stops when the metallic tin becomes impenetrable to H0.

Abstract: Masked tin oxide films are etched with an etchant composed of zinc metal, HCl, and a penetration control agent. The exposed metal oxide film is reduced to metallic tin by the action of active hydrogen (Ho) produced in the reaction of zinc with acid, and etching stops when the metallic tin becomes impenetrable to Ho.

Abstract: An apparatus for high speed packing of envelopes is disclosed. The apparatus includes an envelope flap opening assembly which facilitates the opening of each envelope by a finger of an opening element as the envelope passes through packing apparatus. Each envelope may then be conveyed into a first staging assembly where the envelope is stopped, allowing a freely rotating conveyor to force the envelope into contact with an ejection conveyor to direct the envelope from the first staging assembly. The envelope is then transported to the packing assembly by an intermediate conveyor having a plurality of distinctly and selectively driven conveyors to allow staging of the envelopes along the intermediate conveyor. A quick and efficient envelope packing assembly then packs the envelopes and ejects the envelope to an exiting conveyor which seals each packed envelope.

Abstract: Method for etching metal oxide films, especially tin oxide on a substrate in which a metal (Zn) is deposited on said film and etching is performed by a mixture of an acid, such as hydrochloric acid (HCl) and a metal dissolution agent, such as ferric chloride. The hydrochloric acid reacts with the zinc to produce active hydrogen which reduces the tin oxide to tin, which in turn is etched with the hydrochloric acid.

Abstract: A method of polymerising a composition comprising an allyl amine salt of a strong acid said allyl amine containing two or more allyl groups which method comprises reacting said composition in the presence of a free radical initiator which yields only uncharged fragments and at a temperature between -20 and 80.degree.C and at a pH between 0 and 5 in the absence of oxygen.

Abstract: New epoxy resins are described having high strength and ductility. The novel feature of these new resins is that a normal epoxy resin component is cross-linked with a novel mixture of methyl endomethylene tetrahydrophthalic acid and methyl endomethylene tetrahydrophthalic anhydride. An additional usual anhydride, e.g. phthalic anhydride, may also be present. The products are excellent electrical insulators and are suitable for casting, vacuum filling, laminating, binding, etc.