Abstract: A gasket is disclosed having a lining (3) with watertight rims (4,5,8) in which lining is placed between two rings (2,6). A rim (8), which interlocks with the lining (3) attached to one of the rings (2 or 6), rests on the edge (7) of the other ring (6 or 2) so as to keep the two rings together while enclosing the lining.

Abstract: Product usable for manufacturing industrial articles such as friction linings for clutches and brakes. This product comprises a fine fibrous steel powder having a loose density of 0.2 to 1.5 g/c.c. with a carbon content of 0.95 to 1.10% by weight, the chromium content by weight ranging from 1.30% to 1.60%. The powder has a micrographic structure which, when observed in a plane intersecting a metal particle, shows a fine distribution of iron and chromium spherular carbides having the formula (Fe, Cr).sub.3 C in a mixed high-strength martensite and deformable austenite matrix.

Abstract: A self-centering thrust bearing assembly, in which the bearing comprises one ring intended to cooperate with a driving unit of the clutch assembly, whereas its other ring is mounted on an axial movable support driven for the clutching operation, said mounting being provided with a certain radial clearance and a resilient pinching action in axial sliding rest on said support. The pinching action is substantially carried out by first fastening means exerting a pinching stress localized from the ring to the support so that it constitutes for the ring the center of a pivoting movement which is superposed to the radial sliding clearance for the self-centering process.

Abstract: This method of manufacturing composite rings for rolling-contact bearings comprises the steps of making a composite ring from a blank of bearing steel sheet and a circular rough-shaped steel body obtained by compressing a same or different steel grade used in a granular, spheroidal, pulverulent or fibrous form, by means of a sintering, forging and/or rolling operation, the final product having the sheet portion disposed in the operative area of the ring.

Abstract: A composite bearing race and method for fabrication of such race, the composite bearing race consisting of an assembly of two concentric rings in which the ball grooves are impressed by rolling and which is subjected to a heat treatment. The method of fabricating the composite bearing race includes deformably assembling two concentric rings by rolling to radially embed a ball groove of one ring into the other and subject the composite bearing race formed to heat treatment.

Abstract: Bottom bracket hub comprising a hollow spindle with two ball-bearings, said spindle having a relatively thin wall, and mountings permitting the axial adjustment of said spindle; a pair of ball-bearings are mounted on said spindles and a pair of inserts are fitted into the ends of said spindle. Alternatively, the inner races of said bearings are formed by cold-rolling the outer surface of said hollow spindle.

Abstract: Device for rolling rolling-contact bearing races from a blank by means of a die and shaping wheels comprising an inner roller for obtaining the internal profile of the race in the die from which it is separated to permit a possible extrusion of the excess material of said blank, and an outer wheel for shaping part of the external profile of the race against the action of the inner roller, said die being divided in the axial direction into two separable sections disposed on either side of said outer wheel in a die support and constituting a cavity of which the profile is designed for shaping the portions of the outer profile of the race which are adjacent to those shaped by said roller, the two die sections being fitted for free rotation in said die support.

Abstract: An antifriction bearing assembly having two rows of bearing elements running in races of different diameters and laying approximately in the same radial plane. The bearing races and mounting rings are made up of an assembly of flange members formed from sheet metal or thin metal plate and including an inner and an outer flange each defining a race for the inner or the outer row of bearing elements and an intermediate flange defining either an inner or an outer race for each of the rows of bearing elements. The bearing is mounted on two relatively rotatable members by directly securing the rotatable members to the bearing's ring structure which is formed as an integral part of the flanges.

Abstract: A device for measuring spatial displacement comprises two similar elementary capacitors of a differential capacitor and which share a common movable armature and the two capacitors are used to produce respective pulses whose lengths are compared to produce a third pulse whose length is proportional to the displacement of the armature. In a preferred embodiment, the capacitors are switched in alternation into an oscillating circuit and serve to determine the frequency of oscillation thereof and the time taken for a fixed number of oscillations to be produced with each capacitor switched in is measured to produce the first and second pulses. An adder/subtractor counter is provided which provides a fourth pulse whose length is equal to twice that of the first pulse and the fourth pulse is compared with a pulse whose length equals the sum of the first and second pulses to produce the third pulse.

Abstract: The invention relates to a hybrid vehicle of the hydrostatic transmission type comprising a main driving engine, a hydraulic, variable volumetric capacity pump driven from said main engine, a hydraulic motor and a hydropneumatic power accumulator mounted in a delivery conduit of said pump. Said vehicle further comprises an auxiliary hydraulic motor hydraulically mounted in parallel relationship to said first hydraulic motor and having a common output shaft therewith, the volumetric capacity of said auxiliary motor being equal to one fraction of the volumetric capacity of said first hydraulic motor.

Abstract: An internal finish-grinding machine of the type comprising a frame carrying a rotatable grinding wheel and also supporting an axially movable table which itself carries a rotatable support for a workpiece has the table pivotally mounted on a single horizontal spindle which also forms a guide rail along which the table is axially movable. The spindle extends over a major part of the length of the grinder to give the table widely based support and the spindle is situated in a substantially vertical plane containing the axis of rotation of the workpiece support. The spindle is mounted in the lower part of the machine frame in order to maximize the distance between the axis of the spindle and the axis of rotation of the workpiece support. This ensures that there is a minimum deviation in the shape of the finish-ground workpiece brought about by wear of the periphery of the grinding wheel.

Abstract: A fixed-adjustment hub for spoked bicycle wheels wherein two flanges are held on by the tension of the spokes, two bearings are held in a tubular crosspiece, and one bearing is held so as not to slide on the hub axle. The hub is of a fixed-adjustment type, the disassembly of which requires removal of the spokes.

Abstract: This device for retaining the ball-shaped ends of piston-rods in the corresponding cavities of a swash or impeller plate of a rotary cylinder-barrel hydraulic machine. The device comprises a clip provided in turn with spaced radial stardisposed loops, each adapted to co-act with one portion of the surface of the relevant ball-shaped end, the upper or outer portion of each loop being retained by an axial abutment element rigid with said swash or impeller plate, the segment of said clip which interconnects the adjacent loops being adapted to co-act with a retaining member rigid with said swash or impeller plate.