A pilot-actuated servovalve with at least three main flow connections (50, 51, 52, 53) for space-saving installation in a control block is presented. The discharge into the control sleeve (5) for the first main flow connection (50) is formed opposite a piston end face (12) of the main control piston (6). In a pressure-compensation chamber (25), the main control piston (6) forms a pressure-compensa...

A method for mounting a magnetic plate (5) on a disc substrate (2) includes the steps of placing the magnetic plate (5) of a transparent synthetic material within a housing recess (6) of the disc substrate (2), abutting a horn (17) of an ultrasonic wave generating unit generating torsional vibrations on a rim of the housing recess (6) of the disc substrate under application of a predetermined pres...

Prodn. of alcohols and diols by hydrogenation of corresp. monoesters of (di)carboxylic acids, diesters of dicarboxylic acids, lactones and mixts. compsns. (a) providing hydrogenation zone contg. charge of granular heterogeneous Cu-contg. ester hydrogenation catalyst; (b) supplying a vaporous feedstream contg. H2 and an hydrogenatable material selected from 1-4C alkyl monoesters of 8-18C monocarbox...

PCT No. PCT/FI89/00082 Sec. 371 Date Dec. 19, 1989 Sec. 102(e) Date Dec. 19, 1989 PCT Filed May 4, 1989 PCT Pub. No. WO89/11248 PCT Pub. Date Nov. 30, 1989.Methods and apparatuses in mammographic photography, wherein the breast (M) to be photographed is pressed and spread between holders (6,7) attached to the photographing apparatus. A beam (R) of X-radiation is directed from one side of the holde...

An apparatus (10) and related process for enhancement of woven and knit fabrics through use of dynamic fluids which entangle and bloom fabric yarns. A two stage enhancement process is employed in which top and bottom sides of the fabric are respectively supported on members (22, 34) and impacted with a fluid curtain including high pressure jet streams. Controlled process energies and use of suppor...

This invention relates to method and apparatus for compressing an assembly of plates inside a valve regulated lead-acid battery thereby allowing the battery case to expand without causing slippage or partial loss of contact between the battery plates.

A recording device for recordal of movement of parts of the body in particular respiratory movements, which device comprises an elastic hollow tube stretched over a part of the subjects body, such as the chest, through which tube sound pulses are sent while the frequency is being kept inversely equal to the length of the tube. The frequency and rate of variation thereof provides information on the...

The invention proposes a method for the production of nestable parts, at least one part being produced by powder diecasting. To compensate for the shrinkage of the part produced by powder diecasting and, if required, to provide additional play, a separating layer (5) of plastic is applied between the nestable parts. After the casting operation, the separating layer and the binder are eliminated du...

Microvoid polyurethane materials having densities below 300 kg/m<3> and void sizes below 5 micron which are suitable for use as insulating filler in evacuated insulation panels.

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...

A flow duct conducts a gaseous second fluid medium in a given flow direction and has a given cross-sectional area and a given hydraulic diameter. A combined feed and mixing device for introducing a first fluid medium into the second fluid medium in the flow duct and for mixing the fluid media includes at least one tube conducting the first fluid medium and having from 0.05 to 10 feed orifices per ...

Knife for cutting up abattoir meat is in the form of a circular blade with cutter units (1) sepd. from each other by gaps (2). Each cutter unit has a concave cutting area (3) at the end pointing in the cutting direction, extending between two cutting tips (4,5). The forward tip is higher than the rear tip. A second concave area (6), between two tips (7,8) connects to the first area, opposite to th...

The tyre mould includes a shell (1) for the moulding of the side walls, which shell (1) comprises a laminated assembly consisting of lamelliform elements (20) oriented substantially parallel to the axis, the moulding surface for the said side wall being constituted by the juxtaposed edges (24) of the said lamelliform elements (20).

In the prodn. of rigid polyurethane foam by reacting org. polyisocyanate, high mol. cpd. contg. at least 2 reactive H atoms and opt. low mol. chain extender and/or crosslinker in the presence of blowing agent, catalyst and opt. additive(s), the high mol. cpd. comprises a mixt. of polyether alcohol(s) (I) with a high functionality of 6-8 and average equiv. wt. of 125-200, polyether alcohol(s) (II) ...

An apparatus and method for supplying a graphic label that is readable with a light scanning device with such label placed on a rubber article. The graphic bar code label is optically interpreted with a bar code reader. Thus, the cured substrate with the label with the graphic message is produced by using thermal transfer techniques. For this purpose, the ribbon in contact with the substrate passe...

PCT No. PCT/FR95/00338 Sec. 371 Date Sep. 24, 1996 Sec. 102(e) Date Sep. 24, 1996 PCT Filed Mar. 20, 1995 PCT Pub. No. WO95/25567 PCT Pub. Date Sep. 28, 1995A toe piece for a ski safety binding includes a jaw having two lateral arms. The lateral arms pivot about a pin. The return and holding forces during the elastic travel are proportional to the triggering threshold. The useful elastic travel is...

Compositions containing at least one hydrofluoroalkane and at least one stabilising agent chosen from quinones and compounds containing a nitroso group, added in an amount sufficient to stabilise the hydrofluoroalkanes. These compositions can especially be used in premixes for polyurethane foams.

The prodn. of CFC-free rigid polyurethane (PU) foam with a low thermal conductivity comprises reacting (a) urethane gp-modified polyisocyanate(s) with (b) high-mol. wt. cpd(s). with at least two reactive H atoms and opt. (c) low-mol. wt. chain extenders and/or crosslinkers, in the presence of (d) blowing agents, (e) catalysts and opt. (f) additives. Component (a) consists of polyester-isocyanate s...

Isocyanate-based foams are produced by reacting 1) polyisocyanates with 2) compounds having a molecular weight of from 400 to 10,000 which contain at least two hydrogen atoms which are active towards isocyanates, in the presence of 3) hydrocarbons which can be evaporated under the foaming conditions as blowing agent, optionally in the presence of 4) compounds containing at least two hydrogen a...

An apparatus comprising a passageway for accepting a strip for determining the presence or quantity of an analyte is provided. The passageway has a serpentine shape to maintain the strip against an optical aperture in the passageway wall, insuring that a constant optical reading is obtained.