Owens-corning Fiberglas Corporation

Other

Kenneth L Austin

Homer G Hill

Gregory C Brock, Jr

George E Smock

A thermal-gravity engine is driven by a changing of the temperature of a vaporizable working fluid (55) in a closed-loop fluid system and the force of gravity operates on a reciprocating lever (12). One or more weight chambers (21), a storage chamber (24), and flow lines (25 and 26) therebetween are arranged in a closed-loop fluid flow system through which the working fluid is pumped. A temperature differential is produced between the two chambers to pump liquid from the storage chamber into each weight chamber in an up position to increase the weight of the weight chamber on an end of the reciprocating lever to move it down in response to the increased weight. The storage chamber is located below each weight chamber. A valve (28) in one flow line for each weight chamber operates to equalize the pressure in an upper portion of each weight chamber and the storage chamber when the weight chamber is in the down position and, when opened, the working fluid drains by gravity from each weight chamber back to the storage chamber to unload each weight chamber. Then the associated counterweight (18) moves each operating end back to the up position and the cycle is repeated to continuously oscillate the lever up and down. The oscillating motion of each lever is connected by a ratchet assembly to rotary motion and a flywheel is used to store the energy.

Thermal-gravity engine

A size and dispersion system for, and a method for, the production of glass mats, the size comprising a methyl trimethoxysilane and a malto-dextrin, the dispersion system comprising a nonionic guar gum and an isostearic amide.

Method of producing glass mats

A porous article with a special finish treatment is provided, the article typically being an article of furniture, such as a cabinet door, by way of illustration. The article can be made of a molding compound comprising discrete glass fibers which can be produced by milling cured phenolic-bonded glass fibers. A coupling agent or binder is added to the milled fibers and the combination formed and cured under heat and pressure into the shape of the article. The surface of the formed article is porous and, in fact, the article is porous throughout its thickness. This presents a substantial problem in applying a satisfactory finish. To overcome this, with the article at an elevated temperature, it is immersed in a liquid containing particles in suspension, i.e. polyester liquid containing talc. Because the article is at an elevated temperature, there is less air within the interstices or pores thereof and when the article is in the sealing liquid at a substantially lower temperature, penetration effectively occurs to provide a smooth, substantially non-porous surface which is ready to receive a finish coating. The talc particles fill pores in the surface of the article and limit the extent of penetration of the liquid.

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College Station, TX, United States of America

Kenneth L Austin