Abstract: A check sample of a deep-frozen product or a product is provided, whose keeping, conserving or preserving temperature, which is below ambient temperature, must be controlled or checked. The sample includes a case or envelope, which is sealed in an inviolable manner and, in the case or envelope, a meltable object having a predetermined shape different from the internal shape of the case. This object has a melting point below or equal to the thawing or keeping temperature of the product and the initial shape of the object is impossible to reconstitute following thawing or reheating, even of a partial nature, of the product. According to the invention, the case comprises a first part made invisible and integral with the product or a pack containing the latter by insertion into the pack or the case a second part, which is visible and integral with the first part.

Abstract: The present invention relates to a continuous press for pressing beet pulp and other juice-containing materials, and comprising a wheel (10, 12) which rotates about its own axis inside an eccentric rotatable ring (16) which is pressed against the wheel, and which has an inside diameter larger than the outside diameter of the wheel. The axial ends of a pressure region are closed by cheek plates (48) in the form of rings of smaller diameter than the wheel. These plates are pressed against the inside surface of a wheel rim (12) by pressure wheels (58). They prevent material from escaping from the pressing region, but being of small diameter, they allow material to be inserted and removed from the wheel-ring assembly up and downstream respectively from the pressing region.

Abstract: The present invention relates to an automatic device for analyzing successive samples which comprises a turning plate provided at its periphery with vertical sockets containing a small tube filled with the sample to be analyzed, a photomultiplier arranged opposite the lateral face of the plate comprising an orifice communicating with the sockets, a first flat seal adapted to be actuated by a ring to be brought into contact with the lateral face of the plate, a second flat seal adapted to be actuated by another ring above the socket and a third seal carried by a movable cradle below the socket.

Abstract: The present invention relates to a continuous press constituted by a central wheel jointly rotatable with a shaft driven at low speed, and the rim is provided with bearing and guiding means for a movable external crown whose internal diameter is greater than the external diameter of the rim, constituting in association a rotary assembly of two cylinders internally substantially tangent to one another, at least one of the two cylinders being perforated, the external crown being applied radially against the rim of the internal wheel by means of a device bearing upon the wheel or its shaft, constituted essentially by two spools rotating freely about their shafts and externally tangent to the external crown and by a system of production and transmission of the tightening effort, not driven in rotation.

Abstract: The process of the invention essentially consists in supplying sterile gas to an extruded parison confined between the two shells of a mould, this sterile gas being sequentially applied at a first pressure slightly higher than atmospheric pressure, at a second pressure much higher than the first pressure in order to inflate the parison, and at a third pressure which is much lower than the second pressure and corresponds to the desired inflating pressure of the hollow body to be formed.

Abstract: The method of the invention consists in conveying a concentrated aqueous solution of a substance less volatile than water and miscible with the latter into the upper portion of a liquid-vapor exchange column operating at atmospheric pressure and supplied with saturated water vapor at its lower portion, in collecting a dilute aqueous solution of said substance in the lower portion of said column and vapor rich in said substance and sparingly rich in water, at a temperature comprised between about 110.degree. and 150.degree. C, in the upper portion of the said column, said column also alternately functioning to dehydrate, and thereby regenerate said dilute aqueous solution to thereby produce said concentrated aqueous solution.