An improved gate array employs long strips of gates instead of current blocks. Isolation of selected adjacent circuits is provided by connecting positions of the area between transistor gates to VCC or ground. Room for passage of connecting lines across a column is provided by shifting the positions of circuits along a column to open a sufficient quantity of unused gates.

Coking of the hot external face of fuel nozzles operating in the combustor of a gas turbine engine is reduced by controlling air discharging from the nozzle face in a manner to provide a recirculation zone spaced away from the nozzle face a distance effective to substantially reduce coking and yet maintain a stable flame front in the combustor.

A projectile having a downstream extending surface of revolution which terminates as a blunt base has a plurality of circumferentially spaced apart U-shaped, downstream extending troughs in its surface. Each trough is essentially aligned with the direction of the bulk fluid flow adjacent the surface in the vicinity of the trough, and intersects the blunt base to form a trough outlet therein. The troughs are appropriately spaced apart, sized and configured to flow full over their entire length an...

A reduced-scale racing apparatus having at least one self-powered, remotely controlled vehicle, and at least one operator's booth containing a control console for operating the vehicle, the vehicle having a wheeled body provided with a first control for controlling the vehicle, a forwardly trained video camera on the body, a rearwardly trained video camera on the body, a transmitter on the body for the wireless transmission of respective signals from the forwardly and rearwardly trained video ca...

A clutch for equipment which is powered by an internal combustion engine, comprising a drive member which is connected to an output shaft of the engine, a driven member connected to an input shaft of a power transmission device, a number of clutch plates which are interposed between the drive member and the driven member for frictional engagement between the two members by a pressure member which is axially moveable and is biased by a spring, a lifter member for disengagement of the two members ...

A low glare intraocular lens optic using partial depth positioning holes.

There are disclosed novel avermectin reduction products. The compounds are prepared by selective catalytic hydrogenation of avermectin-like compounds or by reaction of selected double bonds with electrophylic reagents. The reduced avermectin compounds have utility as anti-parasitic agents and compositions for that use are also disclosed. The compounds are also highly potent insecticides against agricultural pests. The reduced avermectin compounds have increased stability towards light which prol...

A roller clutch includes control blocks which, during overrun, rub on the pathway, and are thereby forced into the rollers to counterbalance the energizing spring force and thereby reduce the wear that spinning rollers would otherwise cause on the cam ramps.

A reduced length hydraulic shock absorber, preferably for use in a MacPherson strut, does not sacrifice structural rigidity under radial loads. A circumferential sleeve member is attached to the cylinder adjacent the end of the cylinder from which the piston rod extends. The piston rod extends through an opening in the sleeve end with a bearing therein. The sleeve telescopes axially on the cylinder. The sleeve is spring-biased axially outwardly of the cylinder, and is telescoped outwardly from t...

A casing surrounding a fluid stream over which an unbounded fluid flows in a downstream direction has a plurality of alternating, adjoining troughs and ridges in its external surface, extending in the downstream direction to a thin trailing edge of the casing, which will thereby have a wave-like shape.