An improved method and apparatus for making solder connections from input/output connecting pins to the circuitry on a pinned metallized ceramic substrate. A solder preform in the shape of a sphere provides the correct volume of solder. These spheres are held in position at each desired joint by a templet. The substrate, solder sphere and templet assembly is passed through a furnace in a reducing atmosphere and at a temperature to facilitate solder reflow and wetting, thus creating a sound mecha...

A container providing controlled atmospheric storage of fresh fruits and vegetables to improve retention of product freshness by adjusting the carbon dioxide to oxygen ratio, for the storage of said fruits or vegetable can be attained and maintained, thereby retarding premature maturation and spoilage. The environment is controlled by providing a microporous membrane panel of limited carbon dioxide and oxygen permeability on an otherwise substantially impermeable container. The size of this area...

The atmosphere control apparatus of the present invention employs first and second chambers located for example, adjacent the ceiling and adjacent the floor of the audience seating section of the movie theater, respectively. Both chambers have a large storage capacity. Cool air and warm air, supplied from an air conditioner, are stored in the first and second chambers, respectively. In order to create an atmosphere similar to that in, for example, a movie scene, the cool air in the first chamber...

A system for protecting the cockpit of an aircraft from airborne contamination is described which comprises a generally tubular curtain of size corresponding to that of the canopy and cockpit and being pleated and collapsible along its length between an extended condition and a folded condition; a tray, attachable to and co-extensive with the canopy sill of the aircraft, the tray having a floor and inner and outer walls defining a circumferential recess for receiving the curtain in the folded co...

A process for firing oxidizable base metals in the presence of organic media in the presence of CO/CO.sub.2 and water to avoid oxidation of the base metal.

An apparatus and method adaptable to a double indexing forming, filling and sealing machine for packaging liquid products in cartons, associated with the filling and top forming and sealing units for displacing with nitrogen the oxygen normally present in the headspace of the filled cartons. The apparatus includes a housing having a covered chamber and open bottom, with a diffuser screen and pairs of baffle arrangements therein for directing the nitrogen downwardly and forwardly into the leading...

An apparatus and method for casting metal strip includes a moving chill body that has a quench surface. A nozzle mechanism deposits a stream of molten metal on a quenching region of the quench surface to form the strip. The nozzle mechanism has an exit portion with a nozzle orifice. A depletion mechanism supplies a reducing gas to a depletion region located adjacent to and upstream from the quenching region. The reducing gas reacts exothermically to lower the density to provide a low density red...

The invention described herein relates to an apparatus for providing a selectively humidified gas to a camera canister (12) containing cameras and film used in space. A source of pressurized gas (leak test gas 26 or motive gas 21) is selected by a valve (30), regulated to a desired pressure by a regulator (34), and routed through an ejector (46) (venturi device). A regulated source of water vapor in the form of steam from a heated reservoir (18) is coupled to a low pressure region (50) of the ej...

This disclosure relates to spot resistance welding or tack welding of edge portions of sheet material, particularly the welding of seams of containers. Means are provided for effecting gaseous flow around each of a pair of opposed electrodes with the flowing gas being preferably an inert gas and the flow being selectively one of pressure to one electrode and vacuum or partial vacuum to the other or pressure flow to both electrodes. Inert gas flow between the sheet portions being welded is also o...

Apparatus is disclosed for producing a corpuscular beam in the atmosphere with which the beam may be caused to impinge deeply within the work, for example in cutting rocks. The apparatus has a small diameter for a substantial distance from the beam-exit aperture and produces a low pressure between the aperture and the reaction zone of the beam and the work so that the beam is relatively unscattered over a substantial distance. This desideratum is achieved by transmitting one or more fluids along...