A reduced capacitance electrode assembly for use in an alternating current plasma system provides reduced input capacitance to an associated tuning network. The assembly includes an electrode adapted to receive alternating current power for maintaining a plasma region and a plurality of electrically conductive plates. The plates are closely spaced apart by less than a predetermined distance on one side of the electrode for precluding the formation of a plasma region on the one side of the electr...

Toothpaste compositions having monoammonium glycyrrhizinate, strontium disodium ethylenediamine tetraacetate and sodium fluoride or sodium monofluorophosphate.

A reduced load presser bar mechanism having a separate secondary spring that may easily be disengaged or engaged by the operator to counter balance the biasing force of the primary presser bar spring thereby reducing the normal force exerted by the presser foot on the work piece to near zero.

A caster is disclosed to provide a mobile support for a burden. The burden may be home or office furniture or may be industrial, laboratory or production equipment. The caster may be inverted and held in a stationary position, and used to support a moving conveyor. In short, the caster enables low friction and an instant way of changing direction on a full 360.degree. plane with a minimum resistance to realign all casters involved into a new direction. The caster is built into a housing body hav...

An electrical switch for efficient, high continuous current carrying operation, with at least one movable contact for effecting current interruption. The ambient pressure within the volume defined by the electrical switch body is maintained at or is reducible during contact opening to between 10.sup.-1 to 10.sup.2 Torr to minimize contact erosion. A preferred electrical switch is a hermetically sealed, low voltage d.c., device for shunting an electrolyte cell. The sealed switch module has a redu...

The disclosed photographic objective includes, from front to rear, a meniscus first lens of positive power convex toward the front, a bi-concave second lens, a bi-convex third lens, and a negative-power fourth lens whose front surface is concave toward the front and aspherical. The form of each of the lenses, the glass material, and the air separations between the successive lenses being chosen to reduce the overall size of the objective while still permitting good correction of aberrations.

In a direct reduction plant employing a shaft furnace for reducing iron ore and a steam reformer for producing a reducing gas from gaseous hydrocarbon compounds and provided with an installation for heating at least a part of the reducing gas to be supplied to said shaft furnace, either hydrogen sulfide or a material adapted to produce hydrogen sulfide within the reducing gas is added to the reducing gas system from outside of the system so that the concentration of hydrogen sulfide in the reduc...

A compound of the formula (I) and pharmaceutically acceptable salts thereof: ##STR1## wherein: Ar is phenyl, optionally substituted by one or more C.sub.1-4 alkyl, C.sub.1-4 alkoxy, halogen, cyano, nitro, hydroxy, CONH.sub.2, CO.sub.2 W wherein W is C.sub.1-6 alkyl or C.sub.1-4 alkylphenyl which phenyl may be substituted by one or more C.sub.1-4 alkyl, C.sub.1-4 alkoxy or halogen, NR.sub.1 R.sub.2 wherein R.sub.1 and R.sub.2 are selected from hydrogen or C.sub.1-6 alkyl, NHCO C.sub.1-6 alkyl or ...

A reduced calorie chewing gum is provided which does not decrease in viscosity upon chewing and contains less than 65% water-solubles, such as sugars and/or sugar alcohols such as sweeteners, and includes gum base containing high levels of inert fillers, such as calcium carbonate or talc in amounts of at least about 40% by weight, softeners, such as lecithin, and optionally synthetic non-caloric sweeteners, such as aspartame, saccharin, or cyclamates. The chewing gum includes at least about 10% ...

An aerator which considerably reduces the noise, as measured in an adjacent room, resulting from a water flow through a faucet aerator, is disclosed. The aerating disc which directs the water upon one or more screens is preferably about 1.75 mm thick, and has at least 36 water passages (which may be called chambers) through the disc. The water passages or chambers are parallel to the general direction of flow of water through the aerator and have a cross-section no greater than 0.8 mm.sup.2. The...