Abstract: A new and improved automotive heat exchanger and a method of assembling tubes in a header of a heat exchanger comprising, shaping the ends of non-circular cross section tubes into a substantially circular cross section, forming collared openings of substantially circular cross section in a header wall, inserting the tube ends into the openings, welding the tube ends to the collars, and bonding the tubes to the header wall.

Abstract: A brighter, more uniform deposit of electroless silver is achieved over a wider temperature range by employing as a reducer a compound represented by the general formula:R.sup.2 --(CHR.sup.1).sub.n --CH.sub.2 OHwhere n is two (2) to seven (7), R.sup.2 is represented by the formula COOH or CH.sub.2 R.sup.1, each R.sup.1 group is independently selected from the class consisting of OH, NH.sub.2, NHCH.sub.3, NHC.sub.2 H.sub.5 or NHC.sub.3 H.sub.7 and at least one of the R.sup.1 groups is NH.sub.2, NHCH.sub.3, NHC.sub.2 H.sub.5 or NHC.sub.3 H.sub.7.Preferred reducers are N-methylglucamine, d-glucamine and glucosaminic acid.

Abstract: A tool of pliers type which is modified to include stripping jaws for removing insulation from a wire, at least one of said jaws being adjustable for different wire sizes and both jaws being so mounted that they do not substantially increase the overall dimension of the pliers.

Abstract: Apparatus and method for using a heated waste gas stream to evaporate a volatile component such as water or a solvent from a liquid solution comprises a flue to feed the gas stream from the source of heated gas; a container having an inner chamber to hold the liquid for evaporation of the volatile compound and an outer chamber connected to the flue which forms a gas channel substantially surrounding the inner chamber through which at least a portion of the gas stream flows to supply heat to the inner chamber and evaporate the volatile component of the liquid solution; an inlet to feed the liquid solution into the inner chamber; upper and lower liquid level sensors to control the quantity of liquid solution fed into the inner chamber to establish a liquid level therein; a sparger for agitating the liquid solution in the inner chamber; a sump below the container and connected to the flue to receive any condensate from the gas stream and any liquid leaking from the inner chamber; an outlet to combine, vent and d

Abstract: A process for making self-threading screw fasteners wherein only the cutting portions of the tip of the fasteners are hardened. The unhardened portions of the fastener remain ductile and are not subject to hydrogen embrittlement during subsequent plating to improve corrosion resistance. The process preferably comprises applying a radiation curable plastic coating over the drill tip followed by plating of a thin (minimum 0.0005 inch, 0.013 mm) layer of copper. The cured coating is then removed leaving an unplated tip. The screw is then subjected to a hardening process, wherein only the portions of the screw without the copper layer are hardened. The screw may then be plated conventionally with a corrosion resistant metal. The invention is further directed to the product of the process. A second embodiment for making screws suitable for extreme corrosion resistance is also described.

Abstract: A safety post assembly for assisting entry to or exit from the upper portion of a wall having mounted thereon a series of rungs forming a ladder, the assembly comprising a tubular support sleeve; adjustable mounting means for securing the sleeve to the rungs in an upstanding position; an elongated extension rod having a tapered lower end portion for sliding insertion into the tubular sleeve and an opposite upper end portion adapted to extend above the upper portion of the structure and provide grasping means during the entry and exit; a projection extending outwardly from the extension rod, and adapted to rest against the upper end of the sleeve for limiting insertion of the rod lower end portion into the sleeve to a predetermined distance sufficient to support the weight of a person grasping the rod upper end portion during the entry and exit; and a step member extending transversely on opposite sides of the extension rod between the upper and lower end portions and positioned to provide a foothold in the vi

Abstract: The invention is a rust proofing composition containing a copolymer in latex form derived from:(i) vinylidene chloride(ii) vinyl chloride; and(iii) one or more alkyl acrylates and/or alkyl metharcylates having from 1 to 12 carbon atoms is the alkyl group; anda chelating agent comprising pyrogallol, said pyrogallol being present in an amount between 0.5 and 5.0 percent by weight of said aqueous emulsion.

Abstract: A process for making self-drilling, screw fasteners having improved corrosion resistance. The process comprises applying a frangible radiation curable plastic coating over the drill tip corrosion prior to the deposition of a heavy resistant plating on the remainder of the screw. The invention is further directed to the product of the process.

Abstract: An improved ventilated body or neck brace for effective removal of body heat and moisture from inside the brace utilizing a plurality of vent holes in combination with a network of air distributing channels on the inside surface of the brace.

Abstract: A flame retardant, solvent fuels and lubricating fluids resistant, non-flagging, printable, pressure sensitive laminate material capable of service up to 260.degree. C., comprising, a non-woven substrate, an adhesive coating on one side of said substrate and a resin coating on the other side of said substrate.

Abstract: A process for making self-drilling, screw fasteners having improved corrosion resistance. The process comprises applying a frangible radiation curable plastic coating over the drill tip corrosion prior to the deposition of a heavy resistant plating on the remainder of the screw. The disclosure is further directed to the product of the process.

Abstract: An extendable railing for use in stairwells, hallways and the like. The railing comprises an elongated moveable member nonrotatably but slidably mounted inside an elongated fixed, hollow member. The moveable member is supported on at least one friction reducing spacing means for movement from a first retracted to a second extended position with counterbalance means. The railing further comprises means for stopping said movement and for locking said moveable member in the extended position.

Abstract: A protective bushing adapted to fit in a cut end of armored cable of the BX type, shaped and contoured to prevent contact of wires in the cable with any sharp edges or points adjacent to the cut end of the armor.

Abstract: A hand tool for slitting the sheath on flat, two-conductor, plastic clad cables by means of a pointed knife which projects from a fixed mounting within the tool handle into a chamber bounded, opposite the point of the knife blade, by a sloping wall, one end of which defines an opening only slightly larger than the cross section of the cable to be cut, while the other end of the wall defines one end of an elongated opening within which the cable can be moved to assume a range of angles relative to the knife. The walls of the chamber which lie substantially parallel to the knife blade are so mounted that their spacing from the blade and from each other can be varied with micrometric precision, to ensure the location of the cut at exactly the correct distances from the edges of the flat cable.

Abstract: An RFI shielded enclosure and a process for making same are disclosed. The process comprises coating at least one surface of the enclosure with a fluid organic binder having a substantial percentage of catalytic particles suspended therein. The particles used cause the electroless deposition of copper or nickel to produce an RFI shielded enclosure having in excess of 40 dB's shielding at frequencies above 10 kiloHertz.

Abstract: A chuck assembly having jaws to grip an annular work-piece on its outer periphery while machining other surfaces including a face and bore and an expansible element to grip the bore surface of the annular work-piece while machining the outer surfaces and a face, with mechanism for actuating the jaws and expansible element alternately, the parts supporting the jaws and expansible element comprising an assembly adapted for mounting on the headstock of a lathe to permit machining of the work-piece by tools carried on the tool holders normally present in a lathe.

Abstract: Disclosed is a corner gap support used in conjunction with flashing applied to seal the seams created at the junction of a housing erected around a port in a surface, with said surface. As fabricated, the device is adapted both to fill corner gaps in said flashing and to act as a support for patching material used to seal said gaps.

Abstract: A new and improved method and apparatus for using the waste heat energy of a gas stream to heat a liquid so as to cause the evaporation of a volatile agent, therefrom the said method including means to prevent the liquid from flowing back with the source of the gas stream.