Abstract: The present invention is directed to helmet, and, more particularly, a device for adjusting the occipital fixing of a cyclist helmet. A shell fits the skull of the cyclist. Straps integral with side walls of the shell are linked on each side at a single point with a clip. A housing in the shell receives an plate of an occipital support block, articulated with respect to the helmet, which connect through a spindle. At least one occipital strap in the support block assists in lateral adjustment of the support block.

Abstract: Method of assaying the apolipoprotein B (apo B) of low density lipoproteins (LDL) in serum enabling the performance successively, in a single operation, of separation of the LDLs from other lipoproteins containing apo-B by electrophoresis in a polyacrylamide gel having a controlled degree of cross-linking and assay of the apo-B of the LDLs thus separated by electro-immunodiffusion in an agarose gel containing anti-apo B. Samples are placed in wells formed in the acrylamide gel, and the height of the precipitation arcs in the agarose gel is measured.

Abstract: The invention concerns a device and a process for administering a liquid g preparation, in particular by infusion, by implantation or percutaneously, at a given flow rate for relatively long period of time, using a technique involving the retractation of an elastic membrane. More specifically, using this technique, said drug preparation is placed in a tubular reservoir (13) where it is subjected to the action of at least one movable wall (112, 112a). The movable wall is displaced by the pressure of a hydraulic fluid (10), the entry of which is controlled by a capillary tube (4) fed with hydraulic fluid (10) under pressure by a hydraulic accumulator subject to the thrust of a previously dilated retractable elastic membrane (8).

Abstract: The invention relates to an apparatus for effecting the sweep of a beam of light stricly plane and parallel to a given axis, comprising a sweeping mirror, mounted on an axis of rotation substantially perpendicular to the said given axis, and the plane of which substantially contains the said axis of rotation, and an optical device arranged substantially in the plane containing the said given axis of rotation. It comprises a first means of adjustment for adjusting the angle of incidence of the beam of light with respect to a predetermined plane passing through the said given axis and substantially perpendicular to the said axis of rotation of the mirror, and a second means of adjustment for adjusting the inclination of the axis of rotation of the mirror with respect to the said predetermined plane.

Abstract: Mold nozzle for injecting plastic material, constituted by a cylindrical body forming sleeve, associated with a heating device and integrated in a receiving housing provided in the thickness of a mold. The nozzle opens out via a downstream orifice in the interior of the mold and is adapted to receive via its upstream orifice, opposite the preceding one, the flux of material injected from the molding machine nozzle. The mold nozzle is constituted by a first fixed cylindrical sleeve (3), which is immobilized on the wall of the mold and acts as the upstream orifice for the admission of the material. The nozzle has a second mobile sleeve (4), colinear with respect to the first sleeve, and mounted to slide telescopically inside of the first sleeve. The end (5) of the second sleeve, opposite of the end engaged in the first sleeve, comes into abutment against the wall (9) of the receiving housing (8) provided in the thickness of the mold (2).

Abstract: A flake-powder preparation of a polygalactan having randomly interlaced chains of alternating D and L forms and bonded to fine grain aluminum oxide, silicon oxide and titanium oxide disposed throughout the powder and chemically bonded to the chains to form chemical complexes therewith, is used as a substitute for agar-agar as a culture medium. The powder is soluble in water upon heating to a temperature of 80.degree. C. and forms a reversible gel upon cooling.

Abstract: The invention relates to a process for packaging a product, particularly a liquid or pasty product, comprising thermoforming, filling, sealing and cutting out recipients of thermoplastics material, in which the path of advance of the recipients in the forming and sealing stations is cleared by lowering the mobile part of the moulding unit and that of the lower sealing support; a lower cutting tool is used in the cut-out station, comprising a fixed longitudinal part and a mobile transverse part which is lowered to clear the path of advance the recipients; sections of supporting and guiding rail are used both in the sealing and cut-out stations and at the outlet of the cut-out station. In the sealing station, the corresponding sections of rail are used as fixed parts of sealing support, and, in the cut-out station, the corresponding sections of rail are used for longitudinally cutting out the recipients and for supporting and longitudinally guiding the latter.

Abstract: The invention relates to a process for preparing tri-iodo-, di-iodo- and mono-iodothyronines and tri-iodo, di-iodo and mono-iodothyroacetic acids, respectively from thyronine, triiodo or diiodothyro- nine and tetra-, tri- or diiodothyroacetic acid, by electrochemical reduction at controlled potential, in an aqueous medium rendered alkaline by the addition in particular of a tetraalkylammonium hydroxide, whereby either the iodine in 5 position or the iodine in 3 position is selectively reduced, depending on the potential at which operation is carried out, and which is determined previously by plotting a polarograph of the starting substance.

Abstract: An apparatus for the production and deposition of bands in which a pre-winding cavity is positioned below the mould having a base plate integral with the ejecting plunger via a supporting member. The base plate, plunger and supporting member are fixed in space and the mould and cavity are vertically movable relative to the latter. The movable cutting member is connected to a control member which is independent of the vertical movements of the mould. It is possible to impart a reverse movement to the transporting rollers in order to disengage the strip from the access slot.

Abstract: The present invention relates to a device for automatically activating a machine as a function of a base signal without using electrical contacts.The device according to the invention consists principally of means supplying a variable electric current as a function of the rate to be imparted to the machine, of a servolimiter converting into a variable hydraulic control pressure said electric current duly processed and amplified, of at least one hydraulic distributor associated with at least one control jack, the slide valves of the distributor being subject to the action of said variable hydraulic control pressure and at least to the action of counteracting elastic means having predetermined calibration values and the associated jacks being activated by a general service pressure transmitted by the distributors and acting on the elements of the machine to be controlled automatically.