The invention provides a method and apparatus for welding together two metal workpieces, at least one of which has thereon a coating material which enters a fluid or visco-elastic phase at a temperature below the melting temperature of the workpieces, the method comprising the steps of subjecting the workpieces to a preliminary preparative treatment at a zone to be welded and thereafter applying (...

A multicomponent fluid separation and irradiation system is described containing a centrifuge drum and a source of radiant energy (2) located within the drum. In a first embodiment a disposable rigid separation/irradiation chamber (14) is provided with a cylindrical outer compartment located within the drum and opposing the radiant energy source (2). Whole blood is supplied to the chamber through ...

A method of asymmetrically cleaving a plate (1) of brittle material, in which a thermal load (3) and a mechanical load (21) are provided on the plate (1) and the plate (1) is cleft along a desired cutting line (7).

A decanter centrifuge used for solid-liquid separation of a feed solution containing suspended solids. According to a preferred embodiment, plural number of clarified liquid discharge ports (4) are formed on a bowl-head (3) of a rotating bowl (1). On the other hand, a ring-shaped weir (5) is mounted on the bowl-head (3), coaxially has a ring-shaped overflow cavity communicating with each liquid di...

A cutting machine for cutting a flat workpiece comprises a cutting table having a working surface for supporting the flat workpiece, a support movable parallel to the working surface, and a cutting unit mounted on the support above the working surface, the cutting unit comprising a cutting knife vertically adjustable relative to the working surface to regulate the cutting depth of the knife, a ver...

In a process for allocating data sets to time vales of a consecutive sequence, each time value is stored as a data string in a field. Read-out of a given time value starts at the beginning of the data string and continues up to the selected time value. A time value can be allocated to each unit of a data string and vice versa.

A chopper has a cutting tool (10) having cutting teeth (13) and tooth gaps (14) following alternately one after the other over the circumference, and a counter-cutter, which interacts with the cutting tool (10) for the purpose of disintegrating material (12) to be chopped, and a clearer for removing cut-off chopped material (121) from the tooth gaps (14). For the purpose of providing a cost-effect...

For controlling the compression output power of an exhaust turbocharger, irrespective of the charge pressure produced by the compressor of the turbocharger, a separate control pressure source for an adjusting device (5) of a valve (7) in a bypass line (8) to the turbine (10) of the exhaust turbocharger is provided in the form of a compressed air pump (1) which, controlled by a control device, supp...

A mobile x-ray apparatus has a support stand for an x-ray radiator which is mounted together with a control panel to form a unit. This unit is connected to a wheeled carriage so as to be pivotable around a vertical axis as a unit. This results in approximately the same weight distribution being present regardless of the angle at which the x-ray radiator is pivoted with respect to the supporting st...

Novel non-ionic contrast media are efficiently prepared from generally available ionic contrast media or non-iodinated precursors. Particularly, polyhydroxyhalo-hydrocarbons are employed with a triiodo-substituted acylamido benzoic acids in aqueous weakly basic media to selectively substitute the amido nitrogen, followed by activation of the carboxyl group for amide formation.

Said use is characterized in that the cited membranes are placed adequately in the dropper of the dose dispensor and are used to achieve the selective flow of essentially all the active product and the selective retention of essentially all the preservative during pharmacological treatment. The membrane (5) is coupled between the cylinder units (6 and 7) of parts (3 and 4) of the dropper, remainin...

Mechanism for a sofa-bed, comprising a support frame for a mattress (M), the said frame being foldable and retractable in the folded-up position in a case (1) defining the contours of the seat of the sofa-bed, characterised in that it comprises a first assembly constituting the actual frame and formed by the first parts (14, 23, 24, 34) of two articulated subassemblies (6) connected together by sl...

The specification discloses a surfactant composition for rigid urethane, including isocyanurate foams which includes from about 15 to about 50% each of the following ingredients: (1) an organic surfactant; (2) a siloxane-polyoxyalkylene surfactant; and (3) one of water, C-1 to C-3 alcohol and mixtures thereof.

For the propagation of yeast, a given vol. of wort is inserted into a fermentation container with a given vol. of yeast, and the mixt. is taken from the bottom at time intervals to be returned to the top of the container. When there is a required deg. of cloudiness, further wort material is added, and the process is repeated until the container is filled with a given amt.Also claimed is an assembl...

A road working machine has a sensing system (14) that allows a probe (12) to follow a guide wire (10) that is supported by insulated elements (16) mounted on support units (18). The units have a substantial base (30) with a vertical post (20) that has a cross coupling (26) with a horizontal post (28). The vertical and horizontal posts can be adjusted to set the position of the elements (16). A num...

The set (5) is enclosed in a flexible plastic bag (17), which permits sterilisation of set within bag. The bag has opening (22) closed by a strip (23) or semipermeable material, impassable for bacteria but passable to sterilising fluid. The opening is arranged in wall (19) of bag and extends over complete length of wall.The set, after the bag has been closed with the strip, is sterilised by immers...

A bypass line is provided to return an excess portion of working oil, whose pressure has been regulated by a regulator valve, to a suction side of an oil pump from a point between the regulator valve and a torque converter pressure regulator valve. An oil filter is inserted in the bypass line.

A process for converting polyurethane foam into reusable polyol composition which comprises glycolyzing the polyurethane foam to yield a glycolysis polyol product containing amines and reacting the glycolysis polyol product with an alkylene oxide in a mole ratio of <1 mole of alkylene oxide per mole of active amine hydrogen atom in the glycolysis polyol product.

The invention relates to films of linear polyester containing glass spheres having a certain particle size distribution and in a certain amount. The addition of the glass spheres improves, inter alia, the dynamic coefficient of friction of the film. Preferably, a second film additive, fumed silica, of a controlled particle size distribution and weight is added to the film. The addition of the fume...