An improved free flow packing material particularly characterized by its ability to isolate packed items and to absorb the energy of potentially destructive shocks and impacts, together with a method and means for its manufacture. The individual units of the packing material are structurally in the form of elongate flat "bows," wherein two self adhered layers of foamed expanded plastic material form a central portion of the "bow" and curved outward extensions of these layers form two oppositely ...

A regenerated cellulose film having incorporated therein titanium dioxide and carbon black which together cooperate to reduce the transmission of visible light through such film.

An improved photograph mount comprising a substratum member, a primary transparent film having a non-drying tacky pressure-sensitive adhesive coatings on the outer face of the film and overlaying the substratum member, and a secondary transparent film covering and releasably adhering to the primary transparent film, whereby photographs can be preserved together with a sheet of paper on which any desired matters are noted down, the sheet being capable of inserting and transferring between the pri...

An electromagnetic conveyor and method of operating it whereby a first inductor extends from a position below a liquid metal reservoir to a position beneath a chute ascending obliquely from the reservoir and a second inductor extends above the chute overlapping the first to the end of the chute. The field intensity of the overhead inductor is preferably adjusted to a fixed level sufficient to deliver liquid metal conveyed by the first inductor, and the fields intensity of the first inductor vari...

The present invention provides an air guide mounted in the apex area of an "A"-coil evaporator. The air guide is effective in allowing the air to pass smoothly through the evaporator coils. The air coil guide is arranged to allow an unrestricted air flow through the evaporator plates thereby eliminating eddying of the air in the downstream side of the air guide.

Pressure sensitive recording sheets of improved image durability are obtained due to the pressure of a hydrogen quinoline compound.

Improved oil recoveries, where the reservoir is flooded with a REM (recovery enhancing material) followed by a mobility control polymer, are obtained by either preceding the injection of the REM with a PCA (polymer conserving agent) or incorporating the PCA in a portion of the REM. The PCA, then, preferentially adsorbs onto available adsorption sites within the subterranean reservoir which otherwise would be occupied by the mobility control polymer. Examples of the PCA include polymers and copol...

An active diode circuit in which two matched pairs of transistors are connected together in the output circuit of an operational amplifier in such a manner as to provide a positive-going half-wave rectified output signal, a negative-going half-wave rectified output signal and an unrectified output signal. More particularly, a first NPN transistor and a first PNP transistor are interconnected between a first output terminal and the output of the operational amplifier in such a manner as to duplic...

There is disclosed a transistor with improved protection against excessive reverse biasing voltages. The improved protection is the result of providing a punch-through breakdown mode which is operative to the exclusion of an avalanche breakdown mode. In the improved transistor, the punch-through breakdown current is dissipated over a wide area such that little if any structural damage occurs. The provision of a punch-through breakdown to the exclusion of avalanche breakdown is accomplished by re...

An improved speed reducing transmission having particular use in driving the endless treads of heavy construction equipment. One end of the tread frame is provided with a recess or slot and the transmission is removably secured within the slot. The transmission includes a pair of fixed end plates secured to the tread frame and a motor is mounted on one of the end plates. The motor drive shaft drives an eccentric which is mounted for rotation within an opening in a floating gear unit located betw...