Compounds of the general formula; (wherein R represents -CH(CH2OH)2 or -CH2CH(OH)CH2OH) possess a package of favourable parameters which render them of particular use not only in all forms of intravascular visualisation but also in myelography. The compounds are prepared by reaction of the corresponding 5-monoacetylamino compound with one or more reagents effective to introduce the 2-hydrox...

In order to achieve a mechanical retraction of piles in a sheet feeding apparatus with a lifting table, the lifting table can be lowered to the level of the floor and serves to take up, one at a time, a pile supporting surface loaded with a pile of sheets. Each of the pile supporting surfaces is in the form of a mobile carriage and there is a carriage retracting mechanism with a tugging device whi...

A method of, and apparatus for, separating phases in a polyphase system is described and particularly in separating oil from produced water by the contact of gas bubbles and oil droplets by a dispersed gas flotation technique. A polyphase system is divided into at least two portions. The pressure of one portion is reduced to form bubbles of a gas, and the two portions are then recombined whereby t...

PCT No. PCT/SE86/00384 Sec. 371 Date Apr. 29, 1987 Sec. 102(e) Date Apr. 29, 1987 PCT Filed Aug. 29, 1986 PCT Pub. No. WO87/01516 PCT Pub. Date Mar. 12, 1987.In an electrode for an electrochemical cell, the solid active electrode material is accomodated in a plurality of electrolyte-permeable hollow fibres, preferably of yieldable plastic. An electrochemical cell comprises at least one such electr...

A method and device whereby an automatic device for feeding and setting beads onto a tire building drum provides for the loose hanging of two beads and, after centering them in relation to a first axis through expansion of a hanging and automatic centering device, provides for transferring them parallel with the aforementioned first axis and coupled with respective annular transfer and setting bod...

An automatic activation apparatus for a differential pawl which is independent of intervention by an operator of a vehicle, the invention controls the energy supply to the actuator by means of a control logic with two signal inputs. The control logic is fed a wheel slip signal directly at one signal input, and via a break-delay timing element at its other signal input. The control logic is thereby...

The casing (1) of the device comprises four horizontal crushing rolls (5, 6), arranged symmetrically in relation to a vertical mean plane (4). Each of the crusher disks (8), arranged with an axial gap on a drive shaft (7), is provided on its periphery with teeth (9, 10) which mutually engage so that a pair of crushing rolls (14) is arranged in the middle of two natural crushing rolls (15). The two...

There is disclosed a system for controlling an automatic transmission (2) with which an automotive engine (1) is incorporated. The system comprises a first control unit (3) which controls an ignition timing of the engine (1) in accordance with an octane value of gasoline on which the engine is operated; a second control unit (4) which controls a gear change point of the transmission (2) and contro...

An automatic clutch control apparatus controls a clutch on a motor vehicle based on a learned position to fully engage the clutch and a learned position to start engaging the clutch. The automatic clutch control apparatus includes means for determining a basic amount of engagement of the clutch based on operating conditions of the motor vehicle, and means for determining an adjusting amount corres...

An optical spectral analyzer (10) for receiving an input beam (30) through a multi-mode optic fiber (28). The input or beam (30) has a predetermined spectral band width. The random individual spectral components of the beam (30) are dispersed by a grating (40) to generate a spectrum (42, 42' . . . 42N). A detector (52) senses the magnitude of the elements in a reflected focused spectrum (50, 50' ....

A method for preparing a high resilient flexible polyurethane foam, in slabstocks and moulding, wherein a modified or not high reactive polyether-polyol, having an average molecular weight from 3,000 to 10,000 and an average functionality not larger than 4 with an amount of at least 50 % hydroxyl groups, is brought into reaction with organic polyisocyanates in the presence of a "cross-linker/exten...

Oriented polyester films primer coated with a hydrolyzed aminosilane are disclosed. These silanes in the unhydrolyzed state have the formula: XSi(R<2>)a(R<3>)b wherein X is a radical selected from the group consisting of H2NR<1>HNR<1> - and H2NR<1>HNR<1>HNR<1> -; the R<1>'s are the same or different groups selected from the group consisting of C1 to C8 alkyl or phenyl; R<2> is a hydrolyzeable gro...

As a grinder is being rotated, an outer circumference thereof and a metal block of raw material are pressed at determined speed or under determined pressure, and the grinder cuts the block on its surface so as to generate short metal fibers of not more than about 15 mu m calculated as diameter and not more than about 400 mu m in length by contacting between each of abrasive grains held in a matr...

PURPOSE: To reactivate metal silicate conversion catalysts by bringing a stream contg. hydrogen and spent metal silicate conversion catalysts from a conversion region, such as light duty olefins into contact at a high temp. and under reactivating condition. CONSTITUTION: The hot spent or regenerated catalysts are partly supplied through 3 to a heat transfer vessel B where the excess hydrogen is pr...

PURPOSE: To make it possible to efficiently remove coke adhered to spent catalysts by removing hydrocarbons from the spent catalyst by contact with stripping gas and further separating the catalysts from a gaseous stream and the hydrocarbons within a gas/gaseous stream separator and oxidaively regenerating the catalysts. CONSTITUTION: The hydrocarbons are moved from the spent catalyst by steam, et...

PURPOSE:To omit acetone washing and to semi-continuously or continuously recover and dry granules at good efficiency by inserting a screen having a nozzle part contracting toward the outlet into the rotating drum. CONSTITUTION:The granules 8 and cooling liquid 9 in a storing vessel 2 is passed through the transporting pipe 14 and introduced in a porous rotating drum 11. The cooling liquid 9 is fil...

A method of making a polyethylene terephthalate/polyolefin blend for sheeting and thermoformed articles which has improved color stability and can be recycled many times. A heat stabilizer is melt blended only with the polyolefin prior to its incorporation into the polyethylene terephthalate. The PET and polyolefin are then blended and extruded into sheeting and subsequently thermoformed into arti...

An apparatus for correcting a running track of a railless crane includes a running reference point detecting unit 7, a running speed measuring unit 9, a running direction angle detecting unit 11, and a track control unit 15. The running reference point detecting unit 7 generates running reference point detection signals indicative of the lateral offset of the crane when the crane passes spaced run...

A sun shade is described which comprises a canopy (10) opaque to at least ultra-violet light, two rods (16) secured to the canopy in spaced and generally parallel relationship to one another, and two arcuate, resilient, tensioning bows (20) extending between the respective rods (16), in planes transverse to the plane of the two rods (16) the bows (20) being arranged, in use, to rest on the ground ...

Protective barrier consisting of at least two ballastable elements (3, 4) adapted to surround at least partially the work to be protected (1). The height of the individual elements is greater than the water depth. The elements comprise a connection device permitting the structural continuity of the elements after assembly. The protective barrier is entirely independent of the work to be protected....