A method of controlling independently of each other the stirring strength of a jet of oxygen gas and the flow rate of the oxygen gas to be blown onto a molten metal bath in a top-blowing oxygen furnace is disclosed. The method comprises providing an oxygen supplying conduit with a means of detecting the temperature of the supplied oxygen gas, a means of detecting the pressure thereof, and a means ...

The influence of drill string magnetization on an azimuth measurement in a borehole by means of a magnetometer package included in a drill string having a longitudinal axis is eliminated by first eliminating the influence of the cross-axial components of the drill string magnetization through magnetometer readings at various angular orientations of the drill string, and then eliminating the influe...

An electronic article surveillance system of type including a transmitter for providing in a preselected area an electromagnetic field periodically swept in frequency over a predetermined range of frequencies for causing tags in the preselected area to generate tag signals containing a frequency within the predetermined range of frequencies and a receiver including a detector for receiving the tag...

The invention relates to a method of regulating the tar content of precooked anodes intended for the production of aluminum by electrolysis, to an optimum level Bm corresponding to the maximum dry density of the anodes, which utilizes measurements on crude anodes emerging from compaction and without awaiting the results of the cooking process. The method comprises the following repeatedly carrying...

A sanitary napkin (10) having side panels (12,13) intended to be folded around the crotch portion of an undergarment (30) includes an adhesive tape tab (14) secured to the apertured film facing of one panel (12) with a free end overlying the opposite panel (13) in the folded configuration. The adhesive coating on the tape tab (14), an A-B-A/A-B polymer having an adhesion to steel value of 837-1563...

SELF-SUPPORTING POLYMER BAG AND METHOD OF MANUFACTURE A flexible expandable plastic bag self-supporting when open with a rigidifying panel mounted for pivotal movement as the bag is snapped open.

An optical head device having an optical system provided with at least a light source, a shaping prism, an diffracting element and a photodetector. The light source emits light whose intensity distribution has an elliptic shape in its cross section orthogonal to the optical axis. The shaping prism directs the light to a recording medium after shaping the intensity distribution thereof int...

2084068 9118757 PCTABS00008 The present invention is an improved method of applying electrically conductive bus bars (24) to transparent or non-transparent substrates (22) such as glass, plastic and ceramics such as for an electrochromic device, an automobile window or architectural window and many other substrates which could benefit from being heated. The present invention discloses a method for...

A sprocket arrangement which provides increased contact surface area for driving conveyor belts is disclosed. The sprocket is particularly suitable for abrasive applications and/or use with modular plastic belts. The sprocket is formed by stacking and aligning a multiplicity of thin substantially disk shaped sprocket lamina together and then joining the stacked and aligned lam...

Disclosed are a method and apparatus for selective, high speed detection of vapors of specific gas-chromatographically-separable compounds. In the disclosed method separate analyses are performed on two portions of a gas sample formed by flash-heating trapped vapors to successively higher temperatures while flowing hydrogen carrier gas over coatings in/on which the vapors are held. Within a total ...

A signal recording section is used as well as a prepared section. Measures are taken in the latter for reversal of nuclear spin and radiation outside the resonance region, i.e. off-resonance irradiation. The necessary current is supplied from a gradient current source (GC) controlled by a spectrometer. A reversal pulse rotates the magnetisation by about 180 deg.. An excitation pulse rotates the pa...

PURPOSE: To automatically execute to a considerable degree by respectively inserting both barrel halves into auxiliary units, housing them by a centering ring, heating a welding collar to a welding collar temperature in a heating rim, and butting welding seams to a welding seam. CONSTITUTION: Both barrel halves 11, 13 and 12, 14 are respectively inserted into auxiliary units 1. The units 1 each ha...

The invention relates to the forming of felts, the fibres of which are disposed in random directions. These felts are obtained by depositing the fibres which are carried by a current of gas on a gas-permeable conveyor, the fibres, prior to being deposited, being coated with a binder composition. The felt constituted on the conveyor is subject to at least a longitudinal compression, the intensity o...

PCT No. PCT/GB87/00796 Sec. 371 Date Jul. 11, 1990 Sec. 102(e) Date Jul. 11, 1990 PCT Filed Nov. 9, 1987 PCT Pub. No. WO88/03597 PCT Pub. Date May 19, 1988.The packing-seal is shown in use in a borehole as a level-isolating seal for a groundwater sampler. The packing-seal shown includes an expandable annulus of Dowell (TM) water-expandable material. Surrounding that is a pressure-sleeve of rubber....