Abstract: A friction liner, for a dry friction device such as a clutch friction wheel, or a disk brake for a motor vehicle gearbox, is of flat, annular general form. It comprises a flat annular body of friction material having a cylindrical inner surface and a cylindrical outer surface. At least one annular reinforcing zone is incorporated in the body of the liner.

Abstract: An annular friction liner, especially for use in a friction device of a motor vehicle, is made by an apparatus including a pair of adjacent conical rolls, a helical guide and a device for trimming a length of the continuous ring whereby a straight strip of friction material, having a width substantially equal to the required final width of the liner, is deformed into a continuous ring.

Abstract: Disclosed is a process for manufacturing a filtration device. The process includes a fibre carding procedure which forms a web. The filtration device in accordance with the invention takes the form of a web having a single layer lap.

Abstract: A friction liner, for a dry friction device such as a clutch friction wheel, or a disk brake for a motor vehicle gearbox, is of flat, annular general form. It comprises a flat annular body of friction material having a cylindrical inner surface and a cylindrical outer surface. At least one annular reinforcing zone is incorporated in the body of the liner.

Abstract: Disclosed is a process for manufacturing a filtration device. The process includes a fiber carding procedure which forms a web. The filtration device in accordance with the invention takes the form of a web consisting of a single layer lap.

Abstract: A combined filter, for removing solid particles and noxious gases from air to be delivered into the cabin of a vehicle, as part of a ventilating, heating and/or air conditioning system, comprises two layers of a non-woven tissue such as polypropylene, between which are deposited activated carbon granules. The two layers of non-woven tissue are interleaved at least partially, so as to trap the granules between them.

Abstract: A friction liner, for a dry friction device such as a clutch friction wheel, or a disk brake for a motor vehicle gearbox, is of flat, annular general form. It comprises a flat annular body of friction material having a cylindrical inner surface and a cylindrical outer surface. At least one annular reinforcing zone is incorporated in the body of the liner.

Abstract: An annular friction liner, especially for use in a friction device of a motor vehicle, is made by a method in which a straight strip of friction material, having a width substantially equal to the required final width of the liner, is deformed into a continuous ring.

Abstract: Impure white phosphorus values are purified to such extent as to be useful, e.g., for the preparation of P.sub.4 S.sub.10 therefrom, by (a) reacting liquid, impure white phosphorus with an aqueous suspension of a purifying amount of active charcoal to provide a mixture of purification, (b) separating such mixture of purification into a phosphorus-containing phase and an aqueous phase, (c) separating this phosphorus-containing phase, e.g., by means of a silica filter, into purified liquid white phosphorus and spent active charcoal, and (d) recovering the white phosphorus thus purified.

Abstract: The double-acting shock absorber producing the throttling of a fluid flowing through a constricted passage for damping out a movement in constructed, in combination of, a fixed piston (2) and a fixed cylinder (3) cooperating both with a movable member (4). This movable member has two axially aligned portions, that is, an upper portion (5) and a lower portion (6), the upper portion having a cylindrical cavity in which the fixed piston (2) is slidably fitted, and the lower portion having the configuration of a piston slidably engaged in the fixed cylinder.

Abstract: This casement lock (1), notably for casement doors, French windows or the like, comprises essentially a casing (2) enclosing a mechanism for actuating a half-turn bolt, and one or a plurality of operating rods (5, 6) urged to their locking position by resilient means (9). This casement lock is further provided with damping means (14) for slowing down the operating rods (5, 6) during their return movement to the locking position under the action of the resilient means (9).

Abstract: The flame-resisting glazing panel comprises at least one flame-resisting glazing 1 and at least one mechanically strong glazing 2 which is spaced from the flame-resisting glazing by a layer of gas 3. The mechanically strong glazing 2 has an aperture 8 through which extends a plug 9-11; 14-16; 18-22; 26-31 which is arranged hermetically and seals the aperture. The plug is made from a material which is fusible at a relatively low temperature of 70.degree. to 150.degree. C.