A rotary bit for oil and gas well drilling has cutting elements (1) set in a hard facing material (3) which in turn is supported by a sintered steel section (4) between the hard facing and the steel base (7) of the bit.

Process for the assembly of groups of plates for batteries, with continuous separator of microporous material obtained from a flat strip suitably folded to create a sequence of parallel horizontal channels in which plates of opposite polarity are inserted. The plates are fed by special distributors and inserted side by side in the required number in the single channels of the separator, forming co...

This invention relates to a foldable armchair incorporating adjustable backrest and footrest, in which the connecting elements which control orientation of the footrest are connected to the backrest by pivoting crank pins provided with bearing faces cooperating with stops on said backrest, so as to make a unidirectional angular connection which ensures modification of the orientation of the footre...

The invention relates to an adapter for a drop unit with a chamber (13), application hose, clip and probe a.o. for enteral nutrition and intended substantially for disposal packages. The invention is characterized in that it comprises a main member (3) intended to sealingly be attached in the opening of the package (1). The main member is provided with a first through hole (6) for emptying the con...

A device (6) for handling packs including elongated articles, especially lumber packs (2a, 2b), which is adapted to support the lumber pack during the handling and to be brought to an appropriate position in front of an input opening in a rack (1) for the transfer of a loading pack between the handling device (6) and the rack (1). To avoid that the weight of the article pack during the transfer be...

This invention relates to a foldable armchair incorporating adjustable backrest and footrest, in which the connecting elements which control orientation of the footrest are connected to the backrest by pivoting crank pins provided with bearing faces cooperating with stops on said backrest, so as to make a unidirectional angular connection which ensures modification of the orientation of the footre...

The cylinder (10) is vented outwardly in the interior of the diaphragm cylinder by a vent (29) which allows the intrusion of dirt and moisture. The diaphragm cylinder interior is isolated from the guide tube interim (12) by an annular sealing ring or spaced rings (31) seated between the guide tube (12) and the piston rod (14) and sealing the annular chamber (9). The ring is rigidly seated either o...

Process for the partial oxidation of fuel using a multi-orifice burner comprising a central channel and three concentric channels encircling the central channel. Fuel is supplied through the second concentric channel at a specific velocity: oxygen is supplied through the other channels at specific mass flow distribution and velocities.

Porous particles of crosslinked PVC are disclosed. The particles are skinless and have a fast powder mix time. Processes to produce the novel particles are also disclosed.

A solid sheet of adhesive hydrophilic gel which is a homogeneous aqueous mixture, substantially free of unbound water, monomers and crosslinking agents, consisting essentially of an amount dispersed uniformly in water of from about 4 to 35 wt.% of a crosslinked polyethylene oxide, effective to form with the water a tacky surfaced viscoelastic solid which sheet of hydrophilic gel is produced by sub...

Self-extinguishing expandable polystyrene particles containing an expanding agent, a self-extinguishing organic halogen-containing compound and a 2,4,6-triamino-1,3,5-triazine derivative.

Redispersible powders are obtained from an aqueous dispersion of a polymer built up from 20-60% of acrylic or methacrylic acid and 40-80% of alkyl esters of acrylic or methacrylic acid and having a minimum film-forming temperature (MFT) of below 60 degrees C and a dynamic freezing point (T lambda max) of the polymer of below 150 degrees C by spray drying at an inlet temperature Ti and an outlet te...

A residual fuel oil composition comprises a residual fuel oil, preferably at No. 6 fuel oil, having dissolved therein an effective total amount of at least one zirconium salt of (i) an alcohol, or (ii) a phenol, each having a C2 to C24 hydrocarbyl group, or (iii) of a hydrocarbyl sulfonic acid such that the salt has a mol. wt of 100 to 2500, or of any mixture thereof; said effective total amount o...

A microstrip antenna is incorporated in a floor mat, the latter consisting of a conductive grid laminated to a conductive sheet with a layer of dielectric material therebetween to form a capacitor. The microstrip antenna is connected to a source of microwave energy for the purpose of radiating a microwave signal through a surveillance area. A low frequency signal is applied to the capacitor sectio...

A composition for making impermeable walls and other underground structures comprising water, a cement, a silica compound in a dispersed form, and an activating agent selected from the group consisting of an alkaline base and an alkaline salt of a weak acid which do not contain silica, the ratio by weight of lime to silica being less than 1 and preferably between approximately 0.3 to 0.5.

An automotive ignition system transformer including a ferromagnetic core, a primary coil and a secondary coil (43). The secondary windings are wrapped on a tubular insulating winding form or bobbin with annular radial portions (49) defining a plurality of annular coil chambers including a plurality of central chambers (53) and at least one end chamber (51, 52). The end chamber defines a spiral lan...