An acoustic method and apparatus for investigating an earth formation penetrated by a borehole are described. Acoustic transducers are mounted on a tool to accurately determine the distance between a segment of the tool and the wall of the borehole. The acoustic transducers are positioned in such manner that the stand-off distance between individual resistivity measuring electrodes in an array, wh...

A process for treatment of an acidic solution containing ferric iron and at least one non-ferrous metal, prior to removal of ferric iron therefrom, is characterised by adding a specified amount of at least one neutralizing agent, and separating off from the solution any residue or undissolved neutralizing agent remaining after neutralization, thereby producing a solution possessing an acid consumi...

A process is described for increasing the space time yield of polymer production in a fluidized bed reactor employing an exothermic polymerization reaction by cooling the recycle stream to below its dew point and returning the resultant two-phase fluid stream to the reactor to maintain the fluidized bed at a desired temperature above the dew point of the recycle stream.

A process and apparatus for producing a reclosable container stock with adhered occludable closure strips, said apparatus comprising a supply of closure strips, a rotatable lay-on roll having circumferential grooves therein, means to advance the closure strips to the lay-on roll, a rotatable casting cylinder positioned opposite the face of the lay-on roll, means for extruding a molten plastic film...

A process and apparatus for producing a reclosable container stock with adhered occludable closure strips, said apparatus comprising a supply of closure strips, a rotatable lay-on roll having circumferential grooves therein, means to advance the closure strips to the lay-on roll, a rotatable casting cylinder positioned opposite the face of the lay-on roll, means for extruding a molten plastic film...

This method, used in the production of slabstock foam, involves using the gases flowing between the surface of the polymer and an adjusting screen arranged above it to establish a pressure differential, the level of which is made to approximate to an operating point in a range of max 10 mm WC, expediently 2-6 mm WC, by coarse adjustment. The level of the pressure differential is kept at a stabilis...

This method, used in the production of slabstock foam, involves using the gases flowing between the surface of the polymer and an adjusting screen arranged above it to establish a pressure differential, the level of which is made to approximate to an operating point in a range of max 10 mm WC, expediently 2-6 mm WC, by coarse adjustment. The level of the pressure differential is kept at a stabilis...

The marine propulsion device includes a lower unit which has a gear case 16 normally submerged in water and which is arranged to discharge engine exhaust gases through the propeller hub 54, the leading end of the gear case 16 having a tapered nose 18 and a trailing end of the gear case having a generally circular cross section and terminating in a generally vertical trailing edge 21 located forwar...

The marine propulsion device includes a lower unit which has a gear case 16 normally submerged in water and which is arranged to discharge engine exhaust gases through the propeller hub 54, the leading end of the gear case 16 having a tapered nose 18 and a trailing end of the gear case having a generally circular cross section and terminating in a generally vertical trailing edge 21 located forwar...

The transporting device is for use in especially large-scale dish washing machines. It comprises a lay-out with parallel tracks with steering guides for the plates, cups etc. The transport is carried out by a revolving zig-zag line which effectively pushes the articles forward.(1)

The edge is for an ice hockey rink and comprises a number of easily dismantlable connected sections. Each section has at least one insert union of the male and female type for loose connection in their longitudinal direction, and firm connection in their plane. The sections are held together in a longitudinal direction by at least one overall or a series of group tension units.

The container locking device is for vertical coupling of two containers with a separating plate (1) inbetween, and two lock pieces (10,29) attached to the plate. One of these is twistable relative to the plate so as to achieve a fitting for use both manually and automatically in coupling or separating containers. - Thus the fitting can be automatically engaged in all four container corners and doe...

Arc plasma gun for the plasma treatment of workpieces, esp. for the deposition of antifriction, anticorrosive and wear resistant coatings on workpiece surfaces, is equipped with a central consumable cathode, a cylindrical anode, and a tubular plasma guide on the anode flange. A coaxial electromagnet with a nonmagnetic shell is arranged inside the guide and faces the cathode. A focusing solenoid ar...