A method to impregnate a porous body with a filler metal by first contacting the body with an activator metal and then immersing the so contacted body in the filler metal. The filler metal at least partially replaces the activator metal during the immersion. The porous body-filler metal composite can be used as seals in a rotary piston engine.

An improved process for impregnation or ion exchange of catalysts or catalyst supports utilizing ebullated bed techniques.

An interlining material comprising a web of non-woven fibers, said web having a first zone having distributed uniformly therein a binder, said first zone disposed proximate to but not in contacting relationship with a second zone having distributed uniformly therein a binder, the binding characteristics of said first zone being distinctly different from the binding characteristics of said second zone, said zones being interconnected by an intermediate zone, said intermediate zone containing a mi...

An endless conveyor chain is fitted with a plurality of longitudinally spaced fixtures which are adapted to carry electrical motor windings. The windings are carried by the conveyor chain from a load/unload station through a horizontal heating chamber for preheating the windings, then under an applicator station which applies a varnish coating to the windings, then through a heating chamber which is disposed in a generally upright plane adjacent to the applicator station, and then through a diag...

Process for the preparation of selectively constituted carbon impregnated alumina through the thermal cracking of hydrocarbon in contact with a fluidized bed of particles of precoated high surface area alumina in a first zone to deposit carbon in situ thereon in conjunction with the deposition of residual crackable hydrocarbon from the first zone gaseous effluent on particles of uncoated high surface area alumina in a second zone and prior to their introduction into said first zone, and minimiza...

The procedure for impregnating a woven or non-woven, knit, fiber sheet with an aqueous liquid, in particular of the kind containing a treatment agent, is characterized in that it consists of: (i) depositing the sheet 6 on a liquid-permeable, endless cloth 4, (ii) pouring by gravity the liquid in the form of a curtain or lamina onto the sheet and transversely to the direction of advance of this sheet, (iii) generating by means of a vacuum slit 13 mounted underneath the cloth sufficient pressure d...

Methods of impregnating various polymer substrates with an impregnation additive, by simultaneously contacting the polymer substrate with an impregnation additive, carrier liquid, and supercritical fluid are provided. The impregnation additive is substantially insoluble in the supercritical fluid, and the carrier liquid is preferably substantially insoluble in the supercritical fluid.

A furnace of autoclave for heat treatment of carbon articles impregnated with a fluid medium, which is provided with a smoke-elimination system including means for supplying clean air under pressure to the closed furnace and exhausting said air through a smoke incinerator or other cleaning means, and means for supplying clean air by suction to the top of the open furnace and exhausting said air through the same cleaning means. Valves are provided to control the admission and draining off of the ...

Method and apparatus for applying wax to a cardboard box blank formed from board having substantially straight parallel open-ended internal interstices, in which a zone of cascading flow of wax impregnated material is generated and the box blank is passed through the zone with the board interstices open to the wax flow.

A process of impregnating one or more timber articles, such as timber doors, with a treatment agent in which the articles are placed in a treatment chamber which is then filled with the treatment agent. The treatment agent is then pressurized, preferably by pumping more treatment agent into the chamber, to force the treatment agent into the articles. This pressurizing step is performed quickly, for example, within between 5 and 25 seconds, and the articles are then removed from the chamber.