Abstract: A method for producing spherical metal particle uses a molten metal reservoir for containing a molten metal, a rotary drum having a number of teeth onto which the molten metal is to be adhered one after another and a driving means for rotating the rotary drum so that the molten metal adhered to each of the teeth can be scattered from the teeth before even a part of each molten metal adhered to the teeth solidifies. At least one tooth of the rotary drum is dipped into the molten metal contained in the molten metal reservoir. The molten metal adhered to the teeth is scattered from the teeth before any portion of it has solidified by means of centrifugal force acting on the rotary drum. The molten metal assumes a spherical or similar shape during its trajectory due to surface tension. It cools by atmospheric cooling to solidify as discrete metal particles of substantially uniform diameter.
Abstract: A latching mechanism for an automotive vehicle and, in particular, a convertible-type or a movable-type vehicle includes a three-dimensional, two-component positionally adjustable assembly which is mounted to the vehicle and includes a screw-type projection which is received in a keeper disposed proximate the windshield header of the vehicle. A handle is permanently affixed to the pin to facilitate rotation of the pin into and out of the keeper for latching and unlatching, as desired.
Abstract: Disclosed is a starting device for a toy motor using an ultrasonic wave signal. The starting device comprises a transmitter external to the toy which generates an ultrasonic wave signal and a receiving and starting element disposed within the toy for receiving the transmitted ultrasonic wave signal and starting the toy motor. In a preferred embodiment, the motor drives a sound reproducing device. The ultrasonic wave signal from the transmitter is received, amplified, and detected, and when the detected output reaches a predetermined level, a switching transistor forming an energization path to the motor is turned on to start the motor. Once the motor is started, a self-holding switch associated with the switching transistor causes the switching transistor to supply continuous current to the motor even when the transmission of the ultrasonic wave signal has been terminated.
Abstract: There is provided a process for preparing a microcellular foam with improved green strength properties comprising the step of reacting an organic polyisocyanate with polyalkylene ether polyol and from 1 to about 35 parts (by weight, per hundred parts of said polyol) of a chain extender in the presence of from about 0.1 to about 10.0 parts (by weight, per hundred parts of said polyol) of a compound selected from the group consisting of: ##STR1## wherein: (a) said polyol has an average functionality of from about 2 to about 8 and an average equivalent weight of from about 1000 to about 2700, and from about 0.8 to about 1.2 equivalents of said polyol are reacted per equivalent of isocyanate;(b) R is a divalent alkylene radical containing from about 1 to about 4 carbon atoms; and(c) R.sup.1, R.sup.2, R.sup.3, and R.sup.4 are independently selected from the group consisting of hydroxyalkyl containing from about 1 to about 4 carbon atoms and from about 1 to about 2 hydroxyl groups.
Abstract: A composite building panel is disclosed. This building panel is comprised of at least one metal reinforcing member; a layer comprised of glass fiber, said layer being fastened to said metal reinforcing member(s); and a three-dimensional, cross-linked polyester resin layer which abuts said glass fiber layer.
Abstract: A storage apparatus for removably receiving planar members, such as business records. The storage apparatus comprises a storage container having front and rear wall portions and a pair of spaced rods extending horizontally therebetween. A file envelope is adapted to be removably inserted into the storage container. The file envelope is formed with front and rear upstanding walls, each including an aperture located along the side edge. The apertures engage the pair of spaced rods in the storage container to enable the file envelope to be placed on and slidingly supported by the rods. Removable securing members are placed along the side edges of the file envelope on the rods in the storage container.
Abstract: HR or high resiliency polyurethane foams having improved processing stability are prepared from reactive urethane formation promoting active hydrogen-containing compositions which have been pre-treated with carbon dioxide or a weak acid. The pre-treated active hydrogen-containing composition is, then, reacted with an organic polyisocyante to form the foams hereof.
Type:
Grant
Filed:
May 5, 1980
Date of Patent:
August 18, 1981
Assignee:
BASF Wyandotte Corporation
Inventors:
John G. Demou, Edward R. Pray, Robert L. McBrayer
Abstract: Polyamines are prepared by first reacting a polyoxyalkylene polyol having one to eight active hydrogen sites with an epihalohydrin. The resulting polyether is, then, reacted with an amine to replace the chlorine atoms with amine functions. The polyamines hereof are useful as intermediates for preparing cationic polyelectrolytes, such as drainage aids and the like.
Abstract: Polyoxyalkylene polyamines are prepared by first reacting a polyoxyalkylene polyol or a polyoxyalkylene glycol monoether with a halogen-containing compound. The resulting halogenated ether is then aminated by the reaction therewith of a mono- or polyamine. The resulting products are substantially monoamine or polyamine derivatives depending upon the amine reactants. The resulting amines hereof are useful as intermediates for preparing cationic surfactants, cationic polymers and as fuel detergent additives.
Abstract: A monomeric reactant is adsorbed on the surface of a pigment prior to its agglomeration. The subsequent addition of a polymerization initiator or second reactant produces a coated pigment of improved dispersibility, especially in chemically related polymer binder systems.
Abstract: Polyurethane elastomers having nearly Newtonian flow characteristics and having reduced thixotropy are provided by admixing with a pigmented polyol a minor amount of a sodium alkyl sulfate. The polyurethanes hereof are employed as surface coatings for athletic arenas, such as gymnasiums and the like.
Abstract: Furan-modified rigid isocyanurate foams are taught herein. The foams herein are prepared by either (1) the in situ polymerization of furfuryl alcohol and/or furfural during the foam formation reaction, or (2) the catalytic condensation of a furfuryl alcohol-blocked organic polyisocyanate.
Abstract: A safety or "dead-bolt" lock includes a lockably releasable sliding bolt assembly of a first magnetic polarity. The keeper element, which is adapted to be mounted on to a jamb is of a second or opposite magnetic polarity to magnetically attract the bolt. A key lock assembly is used to release the sliding bar from movement. A cover is slidably movable over the entire lock assembly to prevent unauthorized dislodgement.
Abstract: An electric circuit, including a power source and a resistive heating element, is provided within the body of a doll. The circuit is completed by the insertion of a thermometer into an aperture provided in the body of the doll, and the heat generated by the resistive heating element is registered on the thermometer, thereby creating the effect of "taking the doll's temperature.
Abstract: A locking mechanism for effectuating the locking of individual gun barrels to a wall or gun case which includes at least one rotatable jaw which is in opposition to an opposite jaw. The opposite jaw may be either rotatable or fixed. The configuration of the jaws causes them, when locked, to envelope or encircle the gun barrel thereby locking the gun in place.
Abstract: Discrete thermoplastic fibers of fluorohydrocarbons and other self-bonding thermoplastic fibers are deployed as separators or diaphragms in electrochemical cells.