Apparatus and method for reducing the local high tensile stress concentrations of a latch of a connector whereby the latch is loaded during make-up such that it is placed in bending, to the extent that the induced bending produces a compressive stress in the area of high tensile stress concentration. When this stress is added to normal stresses, the resultant tensile stress is reduced to an acceptable level.

A body adapted to move downstream through a fluid has a downstream extending smooth surface terminating at a blunt base. A plurality of adjacent U-shaped, downstream extending troughs in the smooth surface intersect the blunt base to form trough outlets. The troughs are appropriately spaced apart, sized and configured to flow full over their entire length and cause fluid to flow into the space immediately behind the blunt base, thereby reducing base drag on the body.

An improved emergency slide evacuation device wherein a second ply substantially parallels a sliding ply of the emergency slide evacuation device but remains substantially unattached to the sliding ply except for edge portions of the second ply whereby the second ply supports the sliding ply in the event of tears or rips in the sliding ply but remains at least partially isolated from the forces being applied to the sliding ply to effect tearing or ripping. The improvement finds use particularly ...

A reduced wreath condensation boiler. A feed duct for fresh oxygen-carrying air taken from the atmosphere and an exhaust duct for exhausting diluted combustion products to the atmosphere downstream from the extractor fan are essentially parallel, but not coaxial, minimizing heat exchange. A first heat exchanger is disposed above the heating body for providing heat exchange between the fresh air from the feed duct and the combustion products from the heating body prior to dilution. Deflectors cha...

A mold used for forming an elastomeric article such as a tire under heat and pressure is provided with small grooves at seleted locations along the internal cavity walls to reduce or eliminate flash which customarily forms at these locations. Specifically, grooves are provided at the structural interfaces of replaceable mold components, such as tread and bead rings with cavity wall portions of the mold sections. The grooves operate to trap or collect elastomeric material extruded into the interf...

A method and apparatus for separating background events from valid sample events in a liquid scintillation counter are disclosed. Upon the detection of a coincident event pulse the number of pulses detected during a short time interval immediately thereafter together with the energy level of the event pulse is utilized to determine the probability that the event pulse is a valid sample pulse as opposed to an invalid background pulse. The total count rate is determined by summing pulses over the ...

A sense amplifier has a pair of differential amplifiers and a pair of current mirrors. Each of the current mirrors has a master and a slave. The slaves are used for both loads of one of the differential amplifiers, and the masters are used for both loads of the other of the differential amplifiers. The pair of current mirrors are formed of transistors of one conductivity type while the differential amplifiers are formed of transistors of another conductivity type.

A revolver has a lowered firing line by alignment of the barrel with the lowermost chamber of the cylinder. The latter is swingably mounted on a frame at a location above the cylinder and cooperates with a firing mechanism in a compartment of the stock above the grip.

A readhead with reduced height sensitivity for use in a reflectance photometer that measures reflectance of diffuse light from a sample disposed outside the readhead includes a housing with an upper spherical portion and a lower conical portion. The inner peripheral surface of the upper portion is hemispherically configured and the inner peripheral surface of the lower portion is conically configured to permit illumination of a sample disposed outside the readhead. The angle of the cone defined ...

A composition of triglycidylisocyanurate, having reduced tackiness, consists of a solid mixture of at least triglycidylisocyanurate and a non-reactive polyester.