Abstract: An insulated double glazing having the following layers in the following order: first dielectric layer, first layer with infrared reflection properties, second dielectric layer, second layer having infrared reflection properties, and third dielectric layer. The thickness of the first layer with infrared reflection properties is 50% to 64% of that of the second layer having infrared reflection properties.

Abstract: A hydraulic antivibration support has two rigid strength members with at least the first strength member having an aluminum body. The strength members are connected to each other by an elastomer body which defines a first hydraulic chamber belonging to a liquid-filled hydraulic assembly, said hydraulic assembly being closed in sealed manner by a closure element crimped by means of a steel insert which is partially embedded in the aluminum body of the first strength member.

Abstract: A substrate having the following layers in the following order thereon; first dielectric layer, first layer with infrared reflection properties, second dielectric layer, second layer having infrared reflection properties, and third dielectric layer. The thickness of the first layer with infrared reflection properties is 50% to 64% of that of the second layer having infrared reaction properties. The optical thickness of the first dielectric layer is greater than the thickness of the third dielectric layer by at least 100%. The substrate and the layers together exhibit an external reflection color in the range of blue to blue-green at both 0.degree. and 60.degree. incidence angles.

Abstract: A hydraulic antivibration support comprising first and second rigid strength members (1, 2) in the form of a plate, and a bell-shaped elastomer body (3, 4) interconnecting the two rigid strength members and forming a working chamber (A) therebetween, and a compensation chamber (B) connected to the working chamber via a narrow channel (C) filled with liquid like the chambers. A hole (13) pierced in the plate is sealed by a flexible decoupling membrane (14) whose periphery is bonded to the rim of the hole by vulcanization.

Abstract: The invention relates to a process for the fabrication of a drum made of kraft paper according to which a sheet of kraft paper is rolled on a mandril so as to constitute a rotating cylindrical tube. The end of the tube which forms the bottom is rolled with more than one turn and receives a disk which constitutes the bottom of the drum. The disk is then placed on the ridge (8) formed by the rolled edge, and a retaining collar (10) is placed around the tube. The collar is then tightened to clamp the disk (3A) onto the tube.

Abstract: A hydraulic antivibration support comprises first and second rigid strength members, an elastomer body which has a thick wall interconnecting the two rigid strength members and which defines a portion of a working chamber, and a thin wall of elastomer which defines a portion of a compensation chamber that is connected to the working chamber via a narrow channel, the two chambers and the narrow channel being filled with a liquid. The support includes an abutment having no portion that projects into the working chamber from the inside surface of the thick wall of the elastomer body.

Abstract: A hydraulic antivibration support comprises first and second rigid strength members, an elastomer body having a thick wall interconnecting the two rigid strength members and defining a hydraulic working chamber, and a thin wall defining a hydraulic compensation chamber which is connected to the working chamber via a narrow channel. The elastomer body is extended by a flexible elastomer tongue which is received in a slot-shaped housing of the second strength member, said housing including a face in communication with the working chamber and a face in communication with the compensation chamber, both faces being closable in alternation by the flexible tongue.