Abstract: The present invention relates to an On-Load Tap Changer (OLTC) for connection to a regulating winding of a transformer, the regulating winding enclosed in a transformer tank, wherein the transformer tank includes insulating liquid, the OLTC comprising: a switching device including: a main contact, and a resistor contact, wherein the main contact and the resistor contact are configured to be arranged directly in the insulating liquid and that they are configured to be physically separated from the insulating liquid, and wherein the main contact is enclosed in a main contact enclosure and the resistor contact is enclosed in a resistor contact enclosure. The present invention further relates to a transformer comprising the OLTC as disclosed herein.

Abstract: The disclosure relates to a tap changer arranged to be connected to a regulating winding of a rated regulation voltage. The tap changer comprises a diverter switch, a tap selector and a set of tap changer contacts. The tap selector and the diverter switch are encapsulated in a shielding structure arranged to shield the tap selector and the diverter switch from an external electrical field, the shielding structure being arranged to be electrically connected to a connected tap of the regulating winding. The disclosure further relates to transformer arrangement comprising at least one such tap changer.

Abstract: A mechanically and hydraulically actuated brake cylinder for a motor vehicle having a body with a chamber for receiving an axially movable piston (4) that is connected to a pivoting shaft (11) that has a part that is located outside of the body. Pressurized fluid is presented to the chamber to hydraulically actuate a brake application while a rotational torque is applied to the shaft (11) to mechanical actuate a brake application through a ball-ramp mechanism that converts the rotational torque into translational movement for the piston. The ball-ramp mechanism is defined by a rotary plate (28) fixed to the shaft (11) with a first ramp ribs (31), second ramp ribs (32) on the piston (4) and balls (33) housed in the ramp ribs.

Abstract: The invention relates to a mechanically and hydraulically actuated brake cylinder for a motor vehicle, comprising an axially moveable piston (4), a pivoting shaft (11) of which a part, accessible from outside the cylinder, is intended to experience a rotational torque resulting from mechanical actuation of the brake, a ball-ramp mechanism converting the rotational movements of the pivoting shaft into translational movements of the piston and comprising a rotary plate (28) that rotates as one with the pivoting shaft, a moving plate and balls (33) housed in ramp ribs made in the facing faces of the two plates, characterized in that the said moving plate consists of the piston (4).

Abstract: This invention relates to a mechanically- and hydraulically actuated brake cylinder, in which the adjustment neutralization section is reduced, with the result that the cylinder may be more compact.

Abstract: A disk brake having a caliper (1) which straddles a disk (2), a carrier (3) fixed to the vehicle, a cylinder (4) secured to the caliper and closed by a piston (5) and two friction pads (10,11). Two cylindrical and mutually parallel guide pins which slide in corresponding housings. These housings being partially formed by bores (8, 9) made in the carrier (3) for maintaining the caliper (1) with the cylinder (4). The first bore (8), over first and second contiguous sections (s1, S2) of its length, has first and second respective inside diameters (D1, D2), the second diameter (D2) of which is greater than the first diameter (D1). The smaller diameter (D1) being formed on the same side of the first housing as the opening of the bore (8) and the first housing is formed, in addition to the first bore (8), from inside (130) a ring (13) made of elastomeric material.

Abstract: The invention relates to an assembly comprising a friction pad (A), a spring (B) and a wear indicator (C) for a motor vehicle disc brake. The friction pad (A) includes a carrier plate (10) received with anchorage and sliding in a torque-withstanding member (16) of the disc brake, a friction lining (12) being fixed to a part of the surface of a first face of the carrier plate (10) to enter into frictional contact with a rotating disc (22) when a force is applied to a second face of the carrier plate (10) opposite the first face. A through-opening (24) is formed in the carrier plate (10) for fixing a helical part (30) of the spring (B), this part being formed of at least one turn of metal wire and of a fitting part (46) of the wear indicator (C) of the friction lining (12) passing through the helical part (30) of the spring (B).

Abstract: This invention relates to a vehicle disk-brake and spring (40) through which a friction member (10) is attached to a torque-withstanding member (24). A support plate (12) is received via its circumferential ends (16, 18), which is anchored, and slides on the torque-withstanding member (24). At least one circumferential end (18) of the support plate (12) comprises of a rounded surface (22) interacting with the anchor and sliding with the rounded surface (32) defined on the torque-withstanding member (24). One of the rounded surfaces (32) is concave, and the other rounded surface (22) is convex with the radius of curvature of the convex surface (22) being less than the radius of curvature of the concave surface (32).

Abstract: A disk brake having a caliper which slides on a stationary support formed by at least one axial guide pin for moving at least one friction pad against a rotating disk. A locking device which engages the stationary support to prevent the caliper from rotating about the axial guide pin. The locking device includes an axial spindle having a shank, a part of which slides in a bore formed in the stationary support, and a foot which forms a planar stop surface perpendicular to a central axis of the axial spindle. The foot engages a corresponding planar surface on the caliper. During assembly of the disk brake, the foot of the axial spindle interacts with a blocking member after passing through a mounting opening in the caliper to prevent rotation and axially center the spindle with respect to the stationary member.

Abstract: A disk brake having a yoke having a caliper mounted on a carrier by a guide pin. A spring having a filiform structure with a first end connected to an arch of the caliper and a second end connected to the yoke. The first end of the spring engages the yoke such that as the caliper slides with respect to the yoke during actuation of the brake, the end acts on the caliper to return the caliper to a rest position on termination of the actuation of the brake.

Abstract: A combination of a device connecting a yoke (1) and a caliper (2) of a sliding caliper disk-brake includes a key (7) engaged axially in housings of the yoke (1) and caliper (2). The key (7) and one of the housings (10) have non-circular cross-sections and the key (7) is acted upon resiliently by a wire spring (11) of the device so as to reduce the clearance with the housing (10).

Abstract: A brake motor subassembly comprises a control piston (10) having an internal cavity delimited by a base wall (18) and, at the periphery, by a stepped bore (20, 22, 24) and having a mechanical actuating device acting on the control piston via an automatic compensation device formed by a screw-nut device (34) stressed towards the base wall, via a washer (26) and an axial thrust ball bearing (32), by a resilient member (28) supported on a ring (30) fixed at the end of the control piston axially opposite the base wall, and a pilot piston (44) having a first cylindrical peripheral surface of larger diameter (46) sealingly slideably cooperating with an end of reduced diameter (20) of the stepped bore and, in the vicinity of its end (50) axially opposite to the first peripheral surface (46) and cooperating with the washer (26), a second peripheral surface of reduced diameter (54) sealingly slideably cooperating with an annular seal (38) associated with a retaining washer (40) resting axially against a shoulder (42)

Abstract: Data is stored on a prewritten optical data storage medium along a track made up of adjacent elements. A scanning light spot focussed on the medium has to be able to access any element to write, read or modify data there. Prewritten patterns on the medium define a radial graduation scale that is analysed by an optical scaning device using a sampling technique to determine the absolute position of the scanning light spot relative to the track elements, the only material representation of which may be discrete prewritten elements. The technology is particularly applicable to very high density optical memories using a prewritten disk written by thermo-optical interaction with an intensity modulated laser beam.

Abstract: Data is stored on a prewritten optical data storage medium along a track made up of adjacent elements. A scanning light spot focussed on the medium has to be able to access any element to write, read or modify data there. Prewritten patterns on the medium define a radial graduation scale that is analyzed by an optical scanning device using a sampling technique to determine the absolute position of the scanning light spot relative to the track elements, the only material representation of which may be discrete prewritten elements. The technology is particularly applicable to very high density optical memories using a prewritten disk written by thermo-optical interaction with an intensity modulated laser beam.

Abstract: The invention relates to a safety device for disc brakes. The purpose of the device is to prevent the accidental disassembly of a column forming part of a sliding-caliper disc brake. A cap 51 is rotatably coupled with the head of a bolt 48 forming part of the column and screwed onto a stationary support. The cap has a skirt 59 with a cutout 60 in the shape of an arc of a circle, bounded by stops 50, 50'. In the case of accidental unscrewing of the bolt, one of the stops 50, 50' comes to rest against a stationary part 24 of the brake to prevent further unscrewing. Application to the braking of motor vehicles.

Abstract: The brake motor subassembly with automatic play compensation limitation by way of a stepped pilot piston (20), comprising a first cylindrical peripheral surface of larger diameter (21) sliding in an inner bore (7) of the control piston (1) and a second cylindrical peripheral surface of reduced diameter (24) interacting sealingly slideably with an annular gasket (17) in the piston (1), has an intermediate radial shoulder (26) which, during the movement of the pilot piston (20) because of the opposing effective cross-sections (s.sub.1, s.sub.2), interacts with the annular gasket (17) so as thereby to present a new effective surface (s.sub.3) preventing the continuation of the movement of the pilot piston (20) and thus avoiding the compression of the elastic member (11) which normally stresses the automatic compensation nut (14).

Abstract: Process for the regeneration of synchronizing signals used for writing and/or reading recorded digital data or for recording on an optical data carrier, wherein the synchronizing signals are regenerated in phase by determining the phase shift of the center of specific pulses with respect to a clock signal. According to a preferred variant, the specific data and the useful information data are coded by a N.R.Z-type code, the specific data being associated with pulse durations not used in the N.R.Z. code for recording information data. The specific data can be recorded in time multiplexing with digital information data or, according to a preferred variant, in the form of flags at regularly spaced locations on the tracks which define between them zones intended for the recording of data blocks. The recording of these flags can take place prior to any recording of digital information data in preetched form.

Abstract: The invention relates to a disc brake with automatic adjustment, of the type incorporating a calliper (10), a brake actuator (12) which is adapted to act directly upon a first friction component (14) and, by reaction through the calliper (10) upon a second friction component (16). The brake actuator (12) incorporates a mechanical control (32) acting upon a hydraulic control piston (20) through an automatic adjustment device, the latter being formed by a screw and nut device (46, 60) with reversible pitch which is actuatable by the hydraulic piston (20) beyond a predetermined travel of the latter which is defined by a clearance between an annular component (82) and a thrust bearing (92) which is adapted to act upon the screw and nut device (46, 60), the clearance being capable of varying as a function of the pressure applied to the control piston (20).

Abstract: A spring (40) comprises a folded metal leaf including a mounting portion (42) which is joined elastically by its sides, which are circumferentially spaced apart (46, 48), to two rigid actuating portions (58, 60), a first rigid portion (58) lying parallel to the axis of the disc and being capable of pushing elastically by its two free ends the support plates (26, 28) in a direction which is essentially circumferential (T), a second (60) of the rigid portions (58, 60) also lying parallel to the axis of the disc and being capable of pushing elastically, by its two free ends, the support plates (26, 28) essentially radially (R) toward the axis of the disc.