Abstract: A wheel assembly having rolling and swiveling capability includes a wheel bracket configured for mounting one or more wheels, a swivel bracket configured for positioning with respect to an object with respect to which the wheel assembly is used, the swivel bracket including a main body and a spindle extending from one side of the main body of the swivel bracket into a receptacle in the wheel bracket, the spindle and receptacle being tapered at different angles to minimize surface to surface engagement during swiveling, a thrust bearing between the swivel bracket and wheel bracket to transfer force between the brackets while assisting to align the brackets, a retention mechanism at the distal end portion of the spindle configured to retain the spindle in the wheel bracket and aligning the spindle with respect to the wheel bracket while permitting the wheel bracket to swivel about the spindle relative to the swivel bracket.

Abstract: A wheel assembly having rolling and swiveling capability includes a wheel bracket configured for mounting one or more wheels, a swivel bracket configured for positioning with respect to an object with respect to which the wheel assembly is used, the swivel bracket including a main body and a spindle extending from one side of the main body of the swivel bracket into a receptacle in the wheel bracket, the spindle and receptacle being tapered at different angles to minimize surface to surface engagement during swiveling, a thrust bearing between the swivel bracket and wheel bracket to transfer force between the brackets while assisting to align the brackets, a retention mechanism at the distal end portion of the spindle configured to retain the spindle in the wheel bracket and aligning the spindle with respect to the wheel bracket while permitting the wheel bracket to swivel about the spindle relative to the swivel bracket.

Abstract: Topical drug compositions of this invention contain delayed type contact sensitizing haptens in a unique non-flowable, non-toxic, non-volatile, anhydrous gel composition to achieve retained site application on warts and other human papilloma virus (HPV) skin infections. The preferred gelled compositions contain, but are not limited to, the sensitizing haptens, squaric acid dibutylester and diphenylcyclopropenone in optimized blends of Polysorbate 80, Isopropyl myristate uniquely gelled with Polyoxyl 40 stearate to form a penetrant of keratinized epitheliiuim of warts for direct application wherein virucidal pharlacologic action is induced by Th-1 cell mediated immune responses with resultant releases of CD4 helper T cells, CD8 killer T cells and cytokines to attack the human papilloma viruses.

Abstract: The compositions and methods of this invention are used to assess the level of immune competence of tested individuals based on the degree of immune response as a surrogate marker of CD4 T Cell lymphocytes as measured by the intensity of the resultant skin reaction score following controlled topical application of a unique anhydrous composition containing a contact sensitizer. The results of assessment are useful in determining appropriate treatment of immuno-compromised patients. Preferred compositions contain, but are not limited to, Diphenylcyclpropenone as a preferred embodiment of the class of contact sensitizing agents applied to the skin in an optimally prepared formulation preferably containing about 0.4% of the contact sensitizer.

Abstract: A class of corn plants has been developed that are superior as pollinators in the TopCross.RTM. Grain Production System. The plants of this class are larger and more vigorous than many of the current TC Blend.RTM. pollinators. The seed that produces this new class of TC Blend.RTM. pollinators is produced at greater yields and is of greater vigor and quality than that of many current TC Blend.RTM. pollinators. Additionally, the means whereby the seed of this class of plants is produced enables the rapid generation of a wide range of maturities of TC Blend.RTM. pollinators. This greatly expands both the geographic range and the genetic breadth of the TopCross.RTM. grain production system.

Abstract: This invention relates to the manufacture of valuable alkane polyols by reacting oxides of carbon, such as carbon monoxide, with hydrogen in the presence of a rhodium carbonyl complex in homogeneous liquid phase mixture using a solvent mixture of tetraglyme and a sulfolane.

Abstract: The invention relates to a process for preparing cyclic polyethers from cyclic alkylene carbonates in the presence of a solvent, wherein the process is carried out in the presence of a solvent selected from the group containing a carbonyl moiety, nitrile moiety or mixture thereof. In addition, ionic catalysts may be employed to increase the selectivity to cyclic polyether.

Abstract: In an integrated circuit in which an output transistor connected between an output terminal and a point of reference potential normally conducts current in one direction between the output terminal and the reference point and in which a potential may be developed at the output terminal causing a reverse current (i.e. one of opposite direction to the one direction) between the reference and the output terminal through the substrate, circuitry is coupled to the output terminal which is responsive to values of reverse potential at the output terminal for providing a control current at the output terminal and for holding its voltage at a value which limits the flow of reverse current.

Abstract: A class D power amplifier employing two N-channel field-effect power transistors includes an arrangement which develops a biasing voltage for the upper N-channel transistor. The biasing voltage exceeds the magnitude of the power source voltage so that the upper N-channel transistor can exhibit low channel ON resistance whereby substantially the entire supply voltage is applied to a load device. A transistor switch becomes conductive across a resistance which couples biasing voltage to the upper N-channel transistor when the biasing voltage exceeds the supply voltage.

Abstract: This process is concerned with the reductive coupling of .alpha.-halo ethers and/or .alpha.-halo esters to make ethylene glycol derivatives by carrying out the reductive coupling process in the presence of an iron compound having iron in an oxidation state of zero.

Abstract: A current amplifier having a gain factor substantially independent of the common emitter forward current gain (beta) of its component transistors uses a cascade arrangement of current mirror amplifiers (CMA's) to compensate for variations in beta. The output of a first CMA, which current transfer ratio thereof decreases as beta decreases, is connected to the input of a second CMA, which current transfer ratio thereof increases as beta decreases. The composite current gain of the combined first and second CMA's therefore tends to remain constant as the respective betas vary.

Abstract: This invention relates to the manufacture of ethylene glycol, methanol, and derivatives thereof from the reaction of hydrogen and carbon monoxide, by a homogeneous catalytic process using a cobalt-containing compound and an organosilicon compound having least one hydrogen bonded to silicon (--Si--H).

Abstract: This invention relates to the manufacture of ethylene glycol, methanol, and derivatives thereof from the reaction of hydrogen and oxides of carbon, by a homogeneous catalytic process using as the catalyst a solubilized ruthenium carbonyl complex and an organosilicon compound having a hydrogen bonded to silicon (--Si--H).

Abstract: A protection circuit which may be used, for example, in an audio amplifier to protect the output drive transistor against conditions of excessive power dissipation. The circuit includes apparatus for monitoring the product of output current and output voltage across the protected transistor and applying a feedback signal to reduce the power dissipation if a predetermined limit is exceeded. Specifically, a representation of the product of the output voltage and output current is obtained by providing a current proportional to each and passing such current through a respective semiconductor junction to produce a logarithmically related voltage. The logarithm of the power product is obtained by summing the logarithmic voltages developed across each respective semiconductor junction.

Abstract: This invention relates to the manufacture of alcohols and derivatives thereof from the carbon residue of an organosilicon compound such that the resulting alcohol and derivatives thereof contain one carbon and one oxygen more than said carbon residue.

Abstract: A spermicidally active suppository comprising an alkylphenoxypolyethoxyethanol as the spermicide, a mixture of water-soluble polyethylene glycols as the suppository base, a mixture of an organic acid and an inorganic bicarbonate as the foaming agents and a mixture of an amphoteric surfactant and a water-soluble film-forming agent as the foam-stabilizing agent.

Abstract: A protected transistor in an electronic circuit receives base drive current and has its collector-emitter path coupled to a source of collector-emitter potential and to a load. Overcurrent protection therefor is provided by a first, complementary conductivity type transistor connected base to emitter and emitter to base with the protected transistor, and thermally coupled thereto, to develop a collector current responsive to the collector-emitter current of the protected transistor. A comparator provides an overcurrent indication whenever the collector current of the first transistor exceeds a predetermined level. The overcurrent indication prevents further increase in the base drive current to the protected transistor. A further feature of the invention reduces the predetermined level in response to increasing collector-emitter potential of the protected transistor.

Abstract: Ammonium carboxylates having the general formula: ##STR1## wherein R is hydrogen or a substituted or unsubstituted hydrocarbon radical. The defined carboxylates promote the formation of alkane polyols in a homogeneous liquid phase mixture wherein hydrogen and carbon monoxide are reacted in the presence of a rhodium carbonyl complex at a temperature of from about 100.degree. C. to 375.degree. C. and a pressure of from about 500 psia to about 50,000 psia.

Abstract: This invention is concerned with producing ethylene and/or 1,2-propylene glycol by the reaction of a non-cyclic oxymethylene compound formed by the hydration or acetalization of formaldehyde with a compound containing one or more of silicon, germanium and tin bonded therein which functions as an addend in a photochemically or thermally induced radical reaction, to form a 1,2-dioxyethylene containing compound, and cleaving such 1,2-dioxyethylene containing compound to form the glycol thereof.

Abstract: Within current scaling circuitry having bipolar transistors of the same conductivity type disposed in principal master and slave paths, the negative feedback current gain around the principal master path transistor is regulated in direct proportion with the level of a current source that is independent from both of the principal master and slave paths, to substantially achieve tracking between the level of the current source and the levels of current flow through the principal master and slave paths.