Abstract: The invention relates to a method for removing coatings, in particular, organic coatings from metal substrates which are easily corroded or discoloured: aluminimum, aluminium alloy, zinc or zinc alloy.Previously known compositions for this purpose were based on methylene chloride which is environmentally undesirable. In contrast, this invention uses a composition which comprises strong alkali, a polyhydric alcohol or ether derivative thereof and a pyrollidone and/or a lactone. The preferred pyrollidone is N-methyl pyrollidone.
Abstract: A toilet tissue dispenser having a frame with a central arm and spaced side arms, and spindles for rolls of tissue, with each of the spindles having opposed spindle pins for rotation in the frame between the central arm and a side arm, opposed slots in the central arm for slidingly receiving a spindle pin of each of the spindles, a locking member carried in the central arm and movable between a locked position blocking the slots and an unlocked position not blocking the slots, and a lock mechanism mounted in the central arm for actuating the locking member.
Abstract: A method of manufacture of a net form product, including directing a stream of liquid from a nozzle onto a collector of the shape of the desired product, applying a disturbance to the stream, preferably an amplitude modulated disturbance, to produce a droplet stream, and with the nozzle and collector in a chamber, controlling the chamber environment. An apparatus for manufacturing a net form product having a source of molten material under pressure, a support for positioning a product collector in a chamber with the collector defining a desired product, a droplet stream generator positioned within the chamber and including a nozzle, a conduit for conducting molten material from the material source to the generator nozzle, a mechanism, typically a modulator, for disturbing the droplet stream, and a drive mechanism for relative movement of the nozzle and support.
Abstract: A multiple chamber hose for drip irrigation and the like, with a primary chamber for fluid flow therethrough and a multiple layer section having a primary layer, a mid layer and a secondary layer, and with a secondary chamber in said mid layer for fluid flow therethrough. The primary layer is positioned between the primary chamber and the mid layer, and the secondary layer is positioned between the mid layer and the exterior. The hose includes an inlet opening for fluid flow from the primary chamber to the secondary chamber and an outlet opening for fluid flow from the secondary chamber to the exterior. The invention also includes methods of making such a hose.
January 27, 1992
Date of Patent:
October 12, 1993
William A. Delmer, Robert J. Delmer, Daniel W. C. Delmer
Abstract: This invention relates to a process for detackifying and dispersing paint solids for example obtained from paint overspray in enclosed areas such as paint spray booths.The process includes contacting an oil-in-water emulsion with an aqueous solution whereby the oil-in-water emulsion is destabilised. On subsequent contact of paint particles with the aqueous solution comprising the destabilised oil-in-water emulsion, the paint is adsorbed on to destabilised emulsion particles. The process provides an effective method of denaturing paint over-spray which is easily handleable and effective over a wide range of paint compositions.In one embodiment of the invention, the oil-in-water emulsion comprises a latex.
Abstract: A metal dissolving liquid and method for stripping solder and the underlying tin-copper alloy from the copper substrate of a printed circuit board, including an aqueous solution of nitric acid in an amount sufficient to dissolve solder and tin, a source of ferric ions in an amount sufficient to dissolve tin-copper alloy, a source of halide ions in an amount sufficient to solubilize tin, and a source of ammonium ions in an amount sufficient, in combination with the halide ions, to solubilize the tin and substantially eliminate sludge formation, reduce attack on the copper substrate and provide a bright copper finish after solder removal. A liquid further including benzotriazole and urea in amounts not more than about 2% by weight of each. The liquid wherein the source of ammonium ions includes ammonium bicarbonate.
Abstract: Apparatus for molding a strip of blind rivets, with each of the rivets having a pin within a sleeve and with the pin having a pulling head and shank, including a strip advance rod mounted in the apparatus for movement between first and second positions, a set of pin mold cavities and a set of sleeve mold cavities, a first runner for feeding the pin mold cavities and including a band around the rod, a second runner overlying the first runner for feeding the sleeve mold cavities, opposing mold members defining the sets of cavities and a sprue for feeding molding material to the runners, with the rod and strip moving together when the mold members are out of engagement for advancing the molded parts, and with the rod moving through the strip when the mold members are in engagement for returning the rod to the first position.
September 6, 1991
Date of Patent:
August 24, 1993
The Hartwell Corporation
Douglas H. Adkins, John P. Anderson, Robert L. Conly, Thomas G. Singer
Abstract: In the preferred embodiment, a fluid dispenser having a container, a mounting bracket, a latch and a lid. The container and bracket have first interengaging members for supporting the container on the bracket and second interengaging members for maintaining the container on the bracket, the lid and bracket have third interengaging members for pivotally mounting the lid on the bracket with pivot pins on the lid and pivot slots on the bracket for forward movement and upward pivoting of the lid relative to the bracket and container. The lid and container have fourth interengaging members for holding the lid in a closed position on the container, and the lid and bracket have fifth interengaging members for maintaining the lid in the closed position on the container when the latch is in the latched position. The latch preferably is formed integral with the bracket as a single component. An alternative embodiment with a pivoted cover for the container.