A rotor of an electromagnetic retarder and generator assembly comprising: a central ring intended to be mounted around a rotary shaft; a cylindrical body having an inner face arranged facing the central ring, an outer face opposite the inner face, and a lateral fastening face, the cylindrical body being coaxial with the central ring; a fastening arm connected to the central ring and to the lateral fastening face of the cylindrical body; wherein the outer face of the cylindrical body comprises an edge adjacent to the lateral fastening face, termed the first edge and which comprises a slope inclined towards the axis of rotation.
H02K 1/22 - Rotating parts of the magnetic circuit
H02K 9/22 - Arrangements for cooling or ventilating by solid heat conducting material embedded in, or arranged in contact with, the stator or rotor, e.g. heat bridges
A rotor of to an electromagnetic retarder and generator assembly comprising: a cylindrical body comprising a peripheral face, a lateral connection face; the peripheral face comprising a first edge adjacent to the lateral connection face; an inner ring coaxial with the cylindrical body; fastening arms connected to the inner ring and to the lateral connection face of the cylindrical body; first cooling fins arranged on the peripheral face, the first cooling fins extending along the first edge, the first cooling fins being curved and having a concavity oriented forwards; second cooling fins arranged on the peripheral face, the second cooling fins being curved and having a concavity oriented rearwards.
A rotating electrical machine rotor, the rotor being able to turn about a rotation axis, with a transverse plane being perpendicular to the rotation axis, the rotor including: an interior fixing ring; a cylindrical body having a peripheral face, wherein the cylindrical body and the interior fixing ring being coaxial; and fixing arms having a blade shape having two main faces, wherein the fixing arms comprising a distal portion connected to the cylindrical body, the distal portion being inclined so that the main faces of the distal end of the fixing arms are at an inclination angle between 40 degrees and 60 degrees inclusive to the radial plane.
H02K 1/22 - Rotating parts of the magnetic circuit
H02K 9/22 - Arrangements for cooling or ventilating by solid heat conducting material embedded in, or arranged in contact with, the stator or rotor, e.g. heat bridges
4.
APPAREIL A COURANTS DE FOUCAULT ET PROCEDE DE FONCTIONNEMENT DE CET APPAREIL
L’invention concerne un appareil a courants de Foucault comprenant un stator, et un rotor. Le stator comportant un support annulaire pourvu de noyaux polaires, des bobines inductrices agencees autour des noyaux polaires, et des epanouissements polaires fixes chacun a une extremite de chaque noyau polaire. Le rotor comportant au moins une portion cylindrique induite situee en regard des epanouissements polaires. Le stator comporte une cale agencee entre un noyau polaire et un epanouissement polaire. Figure a publier avec I’abrege : Figure 5
L'invention concerne un frein a courant de Foucault comprenant un ensemble statorique (56, 76) et un ensemble rotorique propre a pivoter par rapport � I 'ensemble statorique autour d'un axe de rotation (X-X), I 'ensemble statorique (56) comportant un support annulaire (58) comprenant au moins un noyau polaire (60) et au moins un �panouissement polaire (62) ; et dans lequel I 'ensemble statorique (56) comporte un cache de protection (64) en acier massif fixe a ledit au moins un �panouissement polaire (62).
The invention relates to an eddy current brake comprising a stator assembly (56, 76) and a rotor assembly able to pivot relative to the stator assembly about a rotation axis (X-X), the stator assembly (56) including an annular support (58) comprising at least one pole body (60) and at least one pole shoe (62), and wherein the stator assembly (56) includes a stainless-steel protective shield (64) fastened to the at least one pole shoe (62).
09 - Scientific and electric apparatus and instruments
12 - Land, air and water vehicles; parts of land vehicles
37 - Construction and mining; installation and repair services
Goods & Services
Brakes for machines; retarders (brake system) for machines;
electric brakes for machines; brake blocks for machines;
braking systems and the component parts thereof for
machines; retarder systems and the component parts thereof
for machines; brake linings, pads and shoes other than for
vehicles; braking components for machines; induction brakes
for machines; brakes and eddy current (Foucault's current)
retarders for machines as well as component parts thereof;
braking articles for machines; anti-lock brake systems and
components for machines; brake circuits for machines and the
component parts thereof; stators; rotors; transmission
shafts other than for land vehicles; spare parts for
fastening, controlling, monitoring and connecting brakes and
braking systems for machines; automated electronic braking
device; stators; rotors. Scientific, research, navigation, optical, measuring,
checking, signalling, detecting, testing, inspecting,
life-saving and teaching apparatus and instruments;
apparatus and instruments for conducting, switching,
distributing, transforming, accumulating, regulating or
controlling the distribution or consumption of electricity;
apparatus and instruments for data recording, transmission,
reproduction or processing; recorded and downloadable
computer software; vehicle brake testing apparatus, control,
servo motor and monitoring devices especially for brakes,
brake systems and retarders; downloadable software
applications relating to braking systems and devices;
braking system assistance software for vehicles and
machines; devices, instruments and cables for electricity;
electromagnetic coils; electric coils; stator coils;
electric cables; sensors; detectors; memory cards or
integrated circuit cards; printed circuit boards; integrated
circuits; commutators; electric conductors; connectors
[electricity]; electric converters; electric wires;
inductors [electricity]; electric couplings; electric power
supply devices. Vehicle brakes; retarders (brake system) for vehicles;
electric brakes for vehicles; brake blocks for vehicles;
braking systems and the component parts thereof for
vehicles; retarder systems and the component parts thereof
for vehicles; vehicle braking equipment; brake components
for vehicles; brake linings, pads and shoes for vehicles;
induction brakes for vehicles; brakes and eddy current
(Foucault's current) retarders for vehicles as well as the
component parts thereof; anti-lock brake systems and
components for vehicles; brake circuits for vehicles and the
component parts thereof; transmission shafts for land
vehicles; vehicles; vehicles for locomotion by land, air,
water or rail; automobiles; trucks; motor coaches; aircraft;
airplanes; rail vehicles; tramcars; parts and component
parts of vehicles, vehicles for locomotion by land, air,
water or rail, automobiles, trucks, motor-coaches, aircraft,
airplanes, rail vehicles and tramway cars; spare parts for
fastening, controlling, monitoring and connecting brakes and
braking systems for vehicles. Installation, cleaning, maintenance, overhaul, servicing and
repair services for brakes, retarders, braking articles,
braking systems, vehicles, vehicles for locomotion by land,
air, water or rail as well as component parts thereof;
provision of information with respect to the installation,
cleaning, maintenance, overhaul, servicing and repair of
brakes, retarders, braking articles, braking systems,
vehicles, vehicles for locomotion by land, air, water or
rail as well as their constituent parts.
09 - Scientific and electric apparatus and instruments
12 - Land, air and water vehicles; parts of land vehicles
37 - Construction and mining; installation and repair services
Goods & Services
Brakes for machines; retarders (brake system) for machines;
electric brakes for machines; brake blocks for machines;
braking systems and the component parts thereof for
machines; retarder systems and the component parts thereof
for machines; brake linings, pads and shoes other than for
vehicles; braking components for machines; induction brakes
for machines; brakes and eddy current (Foucault's current)
retarders for machines as well as component parts thereof;
braking articles for machines; anti-lock brake systems and
components for machines; brake circuits for machines and the
component parts thereof; stators; rotors; transmission
shafts other than for land vehicles; spare parts for
fastening, controlling, monitoring and connecting brakes and
braking systems for machines; stators; rotors [parts of
machines, motors or engines]; stator coils. Scientific, research, navigation, optical, measuring,
checking, signalling, detecting, testing, inspecting,
life-saving and teaching apparatus and instruments;
apparatus and instruments for conducting, switching,
distributing, transforming, accumulating, regulating or
controlling the distribution or consumption of electricity;
apparatus and instruments for data recording, transmission,
reproduction or processing; recorded and downloadable
computer software; vehicle brake testing apparatus, control,
servo motor and monitoring devices especially for brakes,
brake systems and retarders; downloadable software
applications relating to braking systems and devices;
braking system assistance software for vehicles and
machines; devices, instruments and cables for electricity;
electromagnetic coils; electric coils; electric cables;
sensors; detectors; memory cards or integrated circuit
cards; printed circuit boards; integrated circuits;
commutators; electric conductors; connectors [electricity];
electric converters; electric wires; inductors
[electricity]; electric couplings; automated electronic
braking device; electric power supply devices. Vehicle brakes; retarders (brake system) for vehicles;
electric brakes for vehicles; brake blocks for vehicles;
braking systems and the component parts thereof for
vehicles; retarder systems and the component parts thereof
for vehicles; brake components for vehicles; brake linings,
pads and shoes for vehicles; induction brakes for vehicles;
brakes and eddy current (Foucault's current) retarders for
vehicles as well as the component parts thereof; anti-lock
brake systems and components for vehicles; brake circuits
for vehicles and the component parts thereof; transmission
shafts for land vehicles; vehicles; vehicles for locomotion
by land, air, water or rail; automobiles; trucks; motor
coaches; aircraft; airplanes; rail vehicles; tramcars; parts
and component parts of vehicles, vehicles for locomotion by
land, air, water or rail, automobiles, trucks,
motor-coaches, aircraft, airplanes, rail vehicles and
tramway cars; spare parts for fastening, controlling,
monitoring and connecting brakes and braking systems for
vehicles. Installation, cleaning, maintenance, overhaul, servicing and
repair services for brakes, retarders, braking articles,
braking systems, vehicles, vehicles for locomotion by land,
air, water or rail as well as component parts thereof;
providing information with respect to installation,
cleaning, maintenance, overhaul, servicing and repair of
brakes, retarders, braking articles, braking systems,
vehicles, vehicles for locomotion by land, air, water or
rail as well as component parts thereof.
09 - Scientific and electric apparatus and instruments
12 - Land, air and water vehicles; parts of land vehicles
37 - Construction and mining; installation and repair services
Goods & Services
Brakes for machines; Retarders being brakes for machines; Electric brakes for machines; Brake blocks for machines, not for land vehicles; Braking systems comprised of brakes and block brakes and the component parts thereof for machines; Retarder systems comprised of brakes for machines and the component parts thereof; Brake linings for machines, anti-friction pads for machines and brake shoes other than for vehicles; Braking components, namely, linings, shoes, pads, segments, brake discs, brake calipers, brake drums, for machines; Induction brakes for machines; Brakes and eddy current retarders being brakes for machines as well as component parts thereof; Braking articles for machines, namely, linings, shoes, pads, segments, brake discs, brake calipers, brake drums; Anti-lock brakes and components for machines; Brake circuit segments for machines and the component parts thereof; Stators being parts of machines; Rotors being brakes for machines; Transmission shafts other than for land vehicles; Spare parts of brakes of machines for fastening, controlling, monitoring and connecting brakes and braking systems for machines; Automated electronic braking device being brakes for machines Scientific measuring instruments, namely, conductivity meters; Apparatus for testing vehicle brakes; Navigational instruments for vehicle being on-board computer; Apparatus and instruments for conducting, switching, transforming, accumulating, regulating or controlling the distribution or use of electricity; Electricity meters; Apparatus for recording, transmission, processing and reproduction of data; Data processing apparatus; recorded and downloadable computer software for database management, for control and command of brakes and retarders; Automotive testing equipment, namely, vehicle brake testing apparatus for monitoring devices especially for brakes, brake systems and retarders; Downloadable software applications for use with braking systems and devices for database management, for control and command of brakes and retarders; Downloadable braking system assistance software for vehicles and machines; Devices, instruments and cables for electricity, namely, electrical controllers, electric control panels; Electromagnetic coils; Electric coils; Stator electric coils; Electric cables; Electric sensors; Smoke detectors; Memory cards and integrated circuit cards; Printed circuit boards; Integrated circuits; Commutators; Electric conductors; Electrical connectors; Electric converters; Electric wires; Electrical inductors; Electric couplings; Electric power supplies devices Vehicle brakes; Retarders being brakes for vehicles; Electric brakes for vehicles; Brake blocks for vehicles; Braking systems comprised of brakes and brake pads and the component parts thereof for vehicles; Retarder systems for vehicles comprised of brakes and brake pads and the component parts thereof for vehicles; Vehicle braking equipment, namely, linings, shoes, brake pads, segments, brake discs, brake calipers, brake drums; Brake components for vehicles, namely, linings, shoes, brake pads, segments, brake discs, brake calipers, brake drums; Brake linings, brake pads and brake shoes for vehicles; Induction brakes for vehicles; Brakes and eddy current retarders being brakes for vehicles as well as the component parts thereof; Anti-lock brakes and components for vehicles; Brake circuit segments for vehicles and the component parts thereof; Transmission shafts for land vehicles; Land vehicles; Vehicles for locomotion by land, air, water or rail, namely, airplanes, aircrafts, automobiles, trucks, tractors, ambulances, motor coaches, motor buses, camping cars, boats, trains; Automobiles; trucks; Motor coaches; Aircraft; Airplanes; Rail vehicles, namely, trains and structural parts therefor; Tramcars; Spare parts of brakes for vehicles for fastening, controlling, monitoring and connecting brakes and braking systems for vehicles Installation, cleaning, maintenance, combustion engine end cover overhaul services, and repair services for automobile brakes, retarders, braking articles, braking systems, vehicles, vehicles for locomotion by land, air, water or rail, namely, airplanes, aircrafts, automobiles, trucks, tractors, ambulances, motor coaches, motor buses, camping cars, boats, trains as well as component parts thereof; Providing technical information in the fields of installation, cleaning, maintenance, overhaul, servicing and repair of brakes, retarders, braking articles, braking systems, vehicles, vehicles for locomotion by land, air, water or rail as well as their constituent parts
09 - Scientific and electric apparatus and instruments
12 - Land, air and water vehicles; parts of land vehicles
37 - Construction and mining; installation and repair services
Goods & Services
Brakes for machines; Retarders being brakes for machines; Electric brakes for machines; Brake blocks for machines, not for land vehicles; Braking systems comprised of brakes and block brakes and the component parts thereof for machines; Retarder systems comprised of brakes for machines and the component parts thereof; Brake linings for machines, anti-friction pads for machines and brake shoes other than for vehicles; Braking components, namely, linings, shoes, pads, segments, brake discs, brake calipers, brake drums, for machines; Induction brakes for machines; Brakes and eddy current retarders being brakes for machines as well as component parts thereof; Braking articles for machines, namely, linings, shoes, pads, segments, brake discs, brake calipers, brake drums; Anti-lock brakes and components for machines; Brake circuit segments for machines and the component parts thereof; Stators being parts of machines; Rotors being brakes for machines; Transmission shafts other than for land vehicles; Spare parts of brakes of machines for fastening, controlling, monitoring and connecting brakes and braking systems for machines; Stator coils being parts of machines Scientific measuring instruments, namely, conductivity meters; Apparatus for testing vehicle brakes; Navigational instruments for vehicle being on-board computer; Apparatus and instruments for conducting, switching, transforming, accumulating, regulating or controlling the distribution or use of electricity; Electricity meters; Apparatus for recording, transmission, processing and reproduction of data; Data processing apparatus; Recorded and downloadable computer software for database management, for control and command of brakes and retarders; Automotive testing equipment, namely, vehicle brake testing apparatus for monitoring devices especially for brakes, brake systems and retarders; Downloadable software applications for use with braking systems and devices for database management, for control and command of brakes and retarders; Downloadable braking system assistance software for vehicles and machines; Devices, instruments and cables for electricity, namely, electrical controllers, electric control panels; Electromagnetic coils; Electric coils; Stator electric coils; Electric cables; Electric sensors; Smoke detectors; Memory cards and integrated circuit cards; Printed circuit boards; Integrated circuits; Commutators; Electric conductors; Electrical connectors; Electric converters; Electric wires; Electrical inductors; Electric couplings; Electric power supplies devices Vehicle brakes; Retarders being brakes for vehicles; Electric brakes for vehicles; Brake blocks for vehicles; Braking systems comprised of brakes and brake pads and the component parts thereof for vehicles; Retarder systems for vehicles comprised of brakes and brake pads and the component parts thereof for vehicles; Vehicle braking equipment, namely, linings, shoes, brake pads, segments, brake discs, brake calipers, brake drums; Brake components for vehicles, namely, linings, shoes, brake pads, segments, brake discs, brake calipers, brake drums; Brake linings, brake pads and brake shoes for vehicles; Induction brakes for vehicles; Brakes and eddy current retarders being brakes for vehicles as well as the component parts thereof; Anti-lock brakes and components for vehicles; Brake circuit segments for vehicles and the component parts thereof; Transmission shafts for land vehicles; Land vehicles; Vehicles for locomotion by land, air, water or rail, namely, airplanes, aircrafts, automobiles, trucks, tractors, ambulances, motor coaches, motor buses, camping cars, boats, trains; Automobiles; Trucks; Motor coaches; Aircraft; Airplanes; Rail vehicles, namely, trains and structural parts therefor; Tramcars; Spare parts of brakes for vehicles for fastening, controlling, monitoring and connecting brakes and braking systems for vehicles Installation, cleaning, maintenance, engine end cover overhaul services and repair services for automobile brakes, retarders, braking articles, braking systems, vehicles, vehicles for locomotion by land, air, water or rail, namely, airplanes, aircrafts, automobiles, trucks, tractors, ambulances, motor coaches, motor buses, camping cars, boats, trains as well as component parts thereof; Providing technical information in the fields of installation, cleaning, maintenance, overhaul, servicing and repair of brakes, retarders, braking articles, braking systems, vehicles, vehicles for locomotion by land, air, water or rail as well as their constituent parts
11.
Alignment features in electromagnetic retarder and assembly comprising such a retarder
An assembly comprising a rotational driving mechanism of a drive shaft, and an electromagnetic retarder capable of slowing down the rotation of the drive shaft. The driving mechanism has a housing and a drive shaft extending along an axial direction. The electromagnetic retarder has a stator support fixed to the housing that has at least one relief extending along the axial direction, and in that the housing comprises at least one complementary relief cooperating with at least part of the relief of the stator support to fix the position of the stator support in relation to the housing along at least one direction contained in a plane perpendicular to the axial direction.
H02K 5/04 - Casings or enclosures characterised by the shape, form or construction thereof
H02K 7/00 - Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
H02K 7/106 - Structural association with clutches, brakes, gears, pulleys or mechanical starters with dynamo-electric brakes
L'invention concerne un ensemble ralentisseur électromagnétique et génératrice, ledit ensemble comprenant un rotor, un induit de ralentisseur porté par le rotor, un inducteur de génératrice porté le rotor, un stator comprenant un manchon présentant une face axiale externe et une face axiale interne, un inducteur de ralentisseur disposé sur la face axiale externe du manchon et un induit de génératrice agencé sur la face axiale interne du stator, caractérisé en ce que le manchon comporte plusieurs corps en matériau amagnétique agencés entre l'inducteur du ralentisseur et l'induit de la génératrice.
Eddy current retarder equipment (1) able to be carried on board a vehicle, comprising: a stator assembly (2), comprising inductor windings (23) forming a circuit (4), a rotor assembly (3) designed to be mounted on a transmission shaft of the vehicle, comprising an armature (31) facing the inductor windings (23), control means (6) for establishing a linear setpoint (β), excitation means (7) for exciting the inductor circuit (4) from an electric power source (5) of the vehicle as a function of the setpoint (β), a speed sensor (9) for supplying information relating to the rotational speed (Ω) of the rotor assembly (3), a sensor (10) of the strength of current supplied to the inductor circuit (4), processing means (8) for estimating, at a given moment (t), the retarding torque supplied by the equipment (1).
The invention relates to an electromagnetic retarder rotor (1) for a vehicle, said rotor comprising: an armature (2) having an inner surface (4); an end (5) having an inner surface that faces the inner surface (4) of the armature (2) and is at a distance therefrom, the end (5) being secured to the armature (2); a ring (13) for coaxial attachment to the armature (2); and an arm (15) defined between an upper edge and a lower edge and having a first end portion secured to the inner surface (7) of the end (5), on the lower edge, and a second end portion secured to the attachment ring (13), the upper edge of the arm (15) being at a distance from the inner surface of the armature (2) over the entire radial dimension of the arm (15).
09 - Scientific and electric apparatus and instruments
12 - Land, air and water vehicles; parts of land vehicles
Goods & Services
Brakes and retarders (braking systems); hydrodynamic brakes
and Foucault current brakes and retarders for machines and
apparatus of all kinds, for gear lifting machines, for test
stands as well as their components; mechanical control,
command and servo-control devices for brakes and retarders. Command, servo-control and control devices, whether
electromechanical or electronic, for brakes and retarders. Brakes and retarders (braking systems); hydrodynamic brakes
and Foucault current brakes and retarders for all vehicles
and components thereof.
09 - Scientific and electric apparatus and instruments
12 - Land, air and water vehicles; parts of land vehicles
Goods & Services
Brakes and retarders (brake systems); hydrodynamic brakes
and brakes and retarders using eddy currents for machines
and apparatus of all sorts, for gear lifting machines, for
test stands as well as their components; devices for
controlling, servo-control and monitoring for brakes and
retarders. Control, servo-control and monitoring devices, either
mechanical, electromechanical or electronic, for brakes and
retarders. Brakes and retarders (brake systems); hydrodynamic brakes
and brakes and retarders using eddy currents for any vehicle
as well as their components.
09 - Scientific and electric apparatus and instruments
12 - Land, air and water vehicles; parts of land vehicles
Goods & Services
Brakes for machines and retarders for machines; hydrodynamic brakes for machines; brakes and retarders that use eddy currents for machines and wind turbines; brakes and retarders for use with machines, namely, gear lifting machines and test stands, and their structural parts therefore; mechanical control, command and servo-control devices for brakes and retarders for machines Electric, electronic, electromechanical or servo-control devices for control and command of brakes and retarders Brake systems for vehicles by land, air or sea and retarders for vehicles by land air or sea; hydrodynamic brakes for vehicles by land, air or sea, and brakes and retarders that use eddy currents for vehicles by land, air or sea and their structural parts therefore
09 - Scientific and electric apparatus and instruments
12 - Land, air and water vehicles; parts of land vehicles
Goods & Services
Brakes for machines and retarders for machines; hydrodynamic brakes for machines; brakes and retarders that use eddy currents for machines and wind turbines; brakes and retarders for use with machines, namely, gear lifting machines and test stands, and their structural parts therefor; mechanical control, command and servo-control devices for brakes and retarders for machines Electric, electronic, electromechanical or servo-control devices for control and command of brakes and retarders Brake systems for vehicles by land, air or sea and retarders for vehicles by land air or sea; hydrodynamic brakes for vehicles by land, air or sea, and brakes and retarders that use eddy currents for vehicles by land, air or sea and their structural parts therefor
19.
ARRANGEMENT FOR AN ELECTRONIC CIRCUIT IN A ROTATING ELECTRICAL MACHINE AND ROTATING ELECTRICAL MACHINE COMPRISING SAID ARRANGEMENT
The invention relates to an arrangement for an electronic circuit (201) in a rotating electrical machine, such as an electromagnetic retarder, comprising a wound exciter rotor (101) and a current generator provided with a feed rotor(124) comprising coils for electrically powering the wound exciter rotor(101)via the electronic circuit(201) mounted adjacent to the feed rotor (124) and forming a single assembly with the body of the feed motor. The invention further relates to an electromagnetic retarder comprising said arrangement.
H02K 49/04 - Dynamo-electric clutchesDynamo-electric brakes of the asynchronous induction type of the eddy-current hysteresis type
H02K 11/00 - Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
H02K 9/06 - Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium with fans or impellers driven by the machine shaft
06 - Common metals and ores; objects made of metal
07 - Machines and machine tools
09 - Scientific and electric apparatus and instruments
12 - Land, air and water vehicles; parts of land vehicles
Goods & Services
Matériel fixe de chemin de fer, maréchalerie. Machines et appareils divers, leurs organes, accessoires et
pièces détachées. Électricité, appareils, accessoires et pièces détachées. Constructions navales, aérostation et aviation, leurs
organes, accessoires et pièces détachées, matériel roulant
de chemin de fer, locomotives, rails, charronnerie,
carrosserie, automobiles et vélocipèdes, pneumatiques.
12 - Land, air and water vehicles; parts of land vehicles
Goods & Services
Freins et ralentisseurs, notamment freins et ralentisseurs à
courants de Foucault pour machines et appareils de toutes
sortes, bancs d'essais, pièces détachées et accessoires. Freins et ralentisseurs, notamment freins et ralentisseurs à
courants de Foucault pour véhicules, pièces détachées et
accessoires.
12 - Land, air and water vehicles; parts of land vehicles
Goods & Services
(1) Brakes and retarders, notably hydro-dynamic brakes and retarders and eddy current brakes and retarders, for vehicles, test benches and machines and apparatus of all kinds; and parts and accessories for such brakes and retarders.
