A primary liquid having a boiling point at atmospheric pressure at least equal to the temperature at which a soldering, fusing or brazing operation is to be performed is continuously boiled to establish a body of hot saturated primary vapor having a density greater than that of air at atmospheric pressure. A blanket of secondary vapor, having a density intermediate that of the primary vapor and the atmosphere, is floated on the body of primary vapor to reduce losses thereof to the atmosphere. The article on which the soldering, fusing or brazing operation is to be performed is passed through the body of secondary vapor into the body of primary vapor in the vessel. Primary vapor condenses on the article, the latent heat of vaporization of the condensing primary vapor heating the article to the temperature required for the soldering, fusing or brazing operation. After completion of the operation, the article is withdrawn from the body of primary vapor through the blanketing body of secondary vapor, out of the vessel and into the atmosphere where it is cooled to ambient temperature.

Apparatus and method for soldering, fusing or brazing

A composition and method for removing deposits (10) from the internal components (24) of a gas turbine engine (18) utilizing a cleaning composition (15) which comprises an aqueous solution of hydroxylamine sulfate, a chelating agent, a compound selected from the group consisting of ammonium sulfamate, ammonium sulfamide, and hydroxylamine-o-sulfonic acid, and, an alkaline pH modifying substance added in an amount sufficient to achieve a pH value of between 6.5 and 14. The method involves contacting the deposits with the cleaning composition, such as in an apply and soak type pattern, chemically dislodging the deposits from the component surfaces. The engine is rinsed to remove the dislodged deposits and residual cleaning composition.

Composition for cleaning a gas turbine engine

A composition and method for removing deposits (10) from the internal components (24) of a gas turbine engine (18) utilizing a cleaning composition (15) which comprises an aqueous solution of hydroxylamine sulfate, a chelating agent, a compound selected from the group consisting of ammonium sulfamate, ammonium sulfamide, and hydroxylamine-o-sulfonic acid, and, an alkaline pH modifying substance added in an amount sufficient to achieve a pH value of between 65 and 14 The method involves contacting the deposits with the cleaning composition, such as in an apply and soak type pattern, chemically dislodging the deposits from the component surfaces The engine is rinsed to remove the dislodged deposits and residual cleaning composition

Method for cleaning a gas turbine engine

A fluid connector includes an extending section including a spiked end to pierce the container port. The extending section includes at least one air conduit and at least one fluid conduit therethrough. The extending section further includes a first abutment member and second abutment member. The first abutment member is adapted to abut a first or air side of the container port upon piercing of the container port. The second abutment member is spaced from the first abutment member and is adapted to abut a second or fluid sided of the container port. The fluid connector can further include grasping members extending from the extending section to facilitate rotation of the extending section relative to the container port during piercing thereof. The fluid connector can also include a check valve in fluid connection with the air line. In several embodiments, the check valve is positioned within the extending section.

Fluid path connectors and container spikes for fluid delivery

A gas generating device which comprises a container within which is sealed a gas generator in the form of a water-reactive substance and structure is provided to break the seal in situ and allow water to penetrate the container and react with the substance to produce the gas. The water-reactive substance may be in the form of pellets having the same or different reactivity with water arranged in the container so as to produce the gas at uniform or varying rates of production.

Gas generating device

Process of stabilizing alkali and/or alkaline earth metal hydrides which comprises coating the particles of hydride by contacting them with a solution of liquid saturated hydrocarbons, boiling in the range from about 220 DEG to 400 DEG C, in saturated hydrocarbons, boiling in the range from about 20 DEG to 160 DEG C, and thereafter removing the solvent.

Stabilization of alkali metal and/or alkaline earth metal hydrides

A method for effecting the conveyance of oxidation-sensitive powdery materials from a storage tank to another vessel, for example a reaction vessel, with a protective gas that serves to transport the powdery material.

Method for the effective dispensation of oxidation-and/or moisture-sensitive materials

Process for the removal of scale from very scaly metal surfaces

Reduction of hydride losses from molten baths containing hydrides

1,156,878. Drying gases. DYNAMIT NOBEL A.G. 24 Nov, 1967 [28 Nov., 1966], No. 53695/67. Heading B1L. [Also in Division C1] Gas to be dried, especially air, is fed by line 4 to the lower zone 2 packed with inert filler such as Raschig rings of a drying column, upper zone 1, which is filled with a granulated alkali metal hydroxide, being separated from the lower zone 2 by wire gauze 3. In the lower zone Concentrated alkali metal hydroxide solution trickles in count ercunrent to the gas being dried thereby partially drying it. Residual moisture is removed by the granulated alkali in zone 1, the concentrated alkali metal hydroxide solution produced in the process forming the solution which trickles through the lower zone. If the gas is initially too dry to form an adequate amount of solution to trickle -through zone 2 and keep any salts formed by chemical reaction in solution, water may be introduced into the gas stream entering.

Drying of gases

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