CA1257320A - Electric retarders - Google Patents
Electric retardersInfo
- Publication number
- CA1257320A CA1257320A CA000501414A CA501414A CA1257320A CA 1257320 A CA1257320 A CA 1257320A CA 000501414 A CA000501414 A CA 000501414A CA 501414 A CA501414 A CA 501414A CA 1257320 A CA1257320 A CA 1257320A
- Authority
- CA
- Canada
- Prior art keywords
- coils
- flange
- retarder
- stator
- ring
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K49/00—Dynamo-electric clutches; Dynamo-electric brakes
- H02K49/02—Dynamo-electric clutches; Dynamo-electric brakes of the asynchronous induction type
- H02K49/04—Dynamo-electric clutches; Dynamo-electric brakes of the asynchronous induction type of the eddy-current hysteresis type
- H02K49/046—Dynamo-electric clutches; Dynamo-electric brakes of the asynchronous induction type of the eddy-current hysteresis type with an axial airgap
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Dynamo-Electric Clutches, Dynamo-Electric Brakes (AREA)
- Braking Arrangements (AREA)
Abstract
ABSTRACT OF THE DISCLOSURE
The invention relates to an electric retarder for vehicle whose stator (1), formed essentially by an annular flange (2) supporting a ring of substantially jointing coils (3), is mounted cantilever fashion on the casing of the rear axle or the gear box of this vehicle and whose rotor comprises two magnetic material disks enclosing the stator themselves mounted cantilever fashion, through more especially arms (10) forming ventilation fins, on a stub shaft extending from the casing. The number of coils is increased from eight to ten or twelve, which, all other things being equal, allows the diameter (D) of the opening formed in the flange and so that of the transmission shaft to be increased.
The invention relates to an electric retarder for vehicle whose stator (1), formed essentially by an annular flange (2) supporting a ring of substantially jointing coils (3), is mounted cantilever fashion on the casing of the rear axle or the gear box of this vehicle and whose rotor comprises two magnetic material disks enclosing the stator themselves mounted cantilever fashion, through more especially arms (10) forming ventilation fins, on a stub shaft extending from the casing. The number of coils is increased from eight to ten or twelve, which, all other things being equal, allows the diameter (D) of the opening formed in the flange and so that of the transmission shaft to be increased.
Description
~257320 IMPROVEMENTS TO ELECTRIC RETARDERS
The invention relates to electric ~eddy current"
retarders.
S It relates more particularly to those of such retarders which are mounted directly on a gear casing of a motor vehicle transmission, such as the casing of the rear axle or the gear box of this vehicle and which comprise an annular inductor stator mounted cantilever fashion on 10 the casing considered by means of a framework in the form of a perforated bell, and a rotor comprising two armatures made from a ferromagnetic material which enclose the stator and are both supported by a central plate itself mounted cantilever fashion on a stub shaft extending from 15 the casing, each disk being interlocked, through a ring of arms forming ventilation fingers, with a support ring fixed on said plate, and this plate being itself coupled to the end flange of a universal joint on the axial side opposite that where the stub shaft is situated.
It relates more particularly still, among the retarders considered, to those in which the annular inductor stator is formed by a ring of coils even in number, with axes parallel to that of the retarder, supported by a trans-verse flange of generally annular shape, each coil comprising 25 a core cylindrical in revolution made from a magnetic material which passes through said flange and an electric wire winding which surrounds this core, these different coils defining a ring of magnetic poles with polarities alternating step by step opposite each armature disk, and the different 30 coils being separated laterally from each other only by the small clearance required for avoiding jamming during mounting and for allowing minimum ventilation.
The advantage of retarders of this type is known, in particular in that mounting thereof on the casing and 35 on the stub shaft considered only slightly increases the axial distance between these elements and the universal 1257;~0 joint considered and in that they generate relatively high retarding torques for a given mass and size.
In known embodiments of these retarders, the number of inductor coils is equal to eight.
If we call:
- A the diameter of the outer circle described about the different coils, which diameter:is generally substantially equal to the overall width of the retarder, - B the diameter of the inner circle inscribed 10 within the coils, which diameter is in general substantially equal to the dlameter of the central hole formed in the stator flange, - and R the ratio A/B, this ratio R is greater than 2 and generally of the order lS of 2.15 to 2.20 for retarders of the kind considered in which thenumber of coils is equal to 8.
Thus, if the "width" or transverse horizontal dimension of the space available for the retarder on the vehicle, width defined for example by the two side members 20 of the chassis of the vehicle, is equal to A, it is impossible to house inside the stator of this retarder a rotor whose ring-central plate assembly has an outer diameter C greater than A/2.
Now, this diameter C is directly related to that 25 of the transmission shaft of the vehicle and so to the drive and deceleration torques likely to be transmitted by this shaft between the engine and the wheels of the vehicle.
The purpose of the invention is especially to 30 increase the diameters of the rotor elements considered, as well therefore as the torques-transmissible by these elements, for a given overall width of the retarder.
For this, a value greater than 8, and preferably equal to ten, is given to the even number of the coils ; 35 of the retarders of the kind considered, i.e. for which in particular the coils are almost jointing laterally and the diameter of the central hole formed in the stator flange is at least equal to that of the circle inscribed within the coils.
Thus, the above ratio R is less than 2 and in S general of the order of 1.85.
In preferred embodiments, recourse is further had to one and/or the other of the following arrangements:
- with the coils spaced apart evenly about the axis of the retarder, the ring formed by these coils is 10 defined laterally on each side of said axis by two vertically superimposed coils and the stator flange is defined laterally by two vertical sides substantially tangential to said coils two by two, - in a retarder according to the preceding paragraph, 15 the stator flange has an external hexagonal contour with rounded corners, which contour comprises, in addition to the two above defined vertical sides, four oblique sides substantially tangential each one to an upper-most or lower most coil of the ring and to a coil contiguous with this 20 endmost coil.
The invention comprises, apart from these main arrangements, certain other arrangements which are used preferably at the same time and which will be more explicitly ~: described hereafter.
In what follows a preferred embodiment of the invention will be described with reference to the accompanying drawings in a way which is of course in no wise limitative Figure 1, of these drawings, shows an end view : of a portion of a known electric retarder, Figure 2 shows similarly a portion of an electric retarder constructed in accordance with the invention, and Figure 3 is an axial section of this latter portion through III-III of Figure 2.
In all cases, an eddy current retarder with horizon-tal or substantially horizontal axis X is mounted cantilever 4 ~25~73;~) fashion on the output of a rear axle casing or gear box of a motor vehicle, said retarder comprising:
- an inductor stator 1 comprising a flange of substantially annular shape 2 which supports a ring of coils 3, even in number 2n, arranged so as to form by their ends two annular successions of flat magnetic poles with polarities alternating from one to the next, - and an armature rotor comprising two ferromagnetic material disks 4 adapted for axially surrounding the stator 10 and each travelling past a succession of poles of this stator from which they are separated by a small clearance or air gap.
Flange 2 is supported by the casing through a perforated bell shaped structure (not shown).
It is itself pierced centrally with a circular hole 5 of relatively large diameter D and at its periphery by 2n smaller holes each adapted for jointingly receiving a core 6 which forms a coil 3 with an electric wire winding 7 surrounding this core.
The cores 6 ad~vantageously endin enlarged shoes or pole portions 8 fixed to their axial ends and defining the above magnetic poles.
The different coils 3 are dimensioned and mounted so that they are spaced apart laterally from each other 25 by narrow gaps i, the width of these gaps being a few milli-meters and generally between 2 and 5mm, so as on the one hand to avoid risks of mutual jamming of these coils during mounting and on the other to make a minimum ventilation between these coils possible.
The diameter A of the outer circle described about coils 3 is substantially equal to the overall width L of the retarder, which width is that of flange 2, this flange being itself generally defined at its periphery by a bent back reinforcement and protective edge 12.
As for the diameter B of the circle described inside the coils, it is substantially equal to the diameter ~57~20 D of hole 5, being generally a little less than this diameter D.
Each of the two disks 4 is connected to a ring 9 through a ring of arms lO forming ventilation fins (a single arm being shown in Figures 1 and 2 for simplifying the drawings) and the two rings 9 are bolted to the periphery of a central plate ll itself fixed to the stub shaft extending from the casing (not shown) Of course, the outer diameter C of the rotor 10 portion formed by rings 9 and by the central plate 11 must always be less than the diameter B of the circle inscribed inside the coils.
In known embodiments, the number of coils 3 is equal to 8 (Figure l).
The ratio R between the diameters A and B is then relatively high, namely higher than 2, this ratio being generally 2.15 to 2.20.
The practical consequence of this state of affairs is that it is not possible to adopt for diameter C a value 20 higher than L/2.
Since the diameter E of the transmission shaft of the vehicle and the value of the torques transmissible by this shaft are directly related to this diameter C, we are confronted with a limit which proves troublesome 25 in certain constructions for which the dimension L is strictly limited, for example because of the spacing which exists between the two side members of the chassis of the vehicle if the retarder is to be housed between these side members.
To overcome this drawback, in accordance with 30 the invention, the even number of coils 3 has been given ; a value greater than 8.
In the embodiment illustrated in Figures 2 and 3, this number is equal to lO, which corresponds to the formation of a ring of lO magnetic poles facing each rotor 35 disk 4.
Experience shows that, under these conditions, 1257;~20 in a surprising way it is possible to obtain, for a given transverse width and a given axial length of the retarder, braking torques at least as high as with the eight coil construction, while substantially increasing the diameters B and D, and so the diameter C.
Thus, in a retarder comprising ten coils in accor-dance with the foregoing, the ratio R becomes less than
The invention relates to electric ~eddy current"
retarders.
S It relates more particularly to those of such retarders which are mounted directly on a gear casing of a motor vehicle transmission, such as the casing of the rear axle or the gear box of this vehicle and which comprise an annular inductor stator mounted cantilever fashion on 10 the casing considered by means of a framework in the form of a perforated bell, and a rotor comprising two armatures made from a ferromagnetic material which enclose the stator and are both supported by a central plate itself mounted cantilever fashion on a stub shaft extending from 15 the casing, each disk being interlocked, through a ring of arms forming ventilation fingers, with a support ring fixed on said plate, and this plate being itself coupled to the end flange of a universal joint on the axial side opposite that where the stub shaft is situated.
It relates more particularly still, among the retarders considered, to those in which the annular inductor stator is formed by a ring of coils even in number, with axes parallel to that of the retarder, supported by a trans-verse flange of generally annular shape, each coil comprising 25 a core cylindrical in revolution made from a magnetic material which passes through said flange and an electric wire winding which surrounds this core, these different coils defining a ring of magnetic poles with polarities alternating step by step opposite each armature disk, and the different 30 coils being separated laterally from each other only by the small clearance required for avoiding jamming during mounting and for allowing minimum ventilation.
The advantage of retarders of this type is known, in particular in that mounting thereof on the casing and 35 on the stub shaft considered only slightly increases the axial distance between these elements and the universal 1257;~0 joint considered and in that they generate relatively high retarding torques for a given mass and size.
In known embodiments of these retarders, the number of inductor coils is equal to eight.
If we call:
- A the diameter of the outer circle described about the different coils, which diameter:is generally substantially equal to the overall width of the retarder, - B the diameter of the inner circle inscribed 10 within the coils, which diameter is in general substantially equal to the dlameter of the central hole formed in the stator flange, - and R the ratio A/B, this ratio R is greater than 2 and generally of the order lS of 2.15 to 2.20 for retarders of the kind considered in which thenumber of coils is equal to 8.
Thus, if the "width" or transverse horizontal dimension of the space available for the retarder on the vehicle, width defined for example by the two side members 20 of the chassis of the vehicle, is equal to A, it is impossible to house inside the stator of this retarder a rotor whose ring-central plate assembly has an outer diameter C greater than A/2.
Now, this diameter C is directly related to that 25 of the transmission shaft of the vehicle and so to the drive and deceleration torques likely to be transmitted by this shaft between the engine and the wheels of the vehicle.
The purpose of the invention is especially to 30 increase the diameters of the rotor elements considered, as well therefore as the torques-transmissible by these elements, for a given overall width of the retarder.
For this, a value greater than 8, and preferably equal to ten, is given to the even number of the coils ; 35 of the retarders of the kind considered, i.e. for which in particular the coils are almost jointing laterally and the diameter of the central hole formed in the stator flange is at least equal to that of the circle inscribed within the coils.
Thus, the above ratio R is less than 2 and in S general of the order of 1.85.
In preferred embodiments, recourse is further had to one and/or the other of the following arrangements:
- with the coils spaced apart evenly about the axis of the retarder, the ring formed by these coils is 10 defined laterally on each side of said axis by two vertically superimposed coils and the stator flange is defined laterally by two vertical sides substantially tangential to said coils two by two, - in a retarder according to the preceding paragraph, 15 the stator flange has an external hexagonal contour with rounded corners, which contour comprises, in addition to the two above defined vertical sides, four oblique sides substantially tangential each one to an upper-most or lower most coil of the ring and to a coil contiguous with this 20 endmost coil.
The invention comprises, apart from these main arrangements, certain other arrangements which are used preferably at the same time and which will be more explicitly ~: described hereafter.
In what follows a preferred embodiment of the invention will be described with reference to the accompanying drawings in a way which is of course in no wise limitative Figure 1, of these drawings, shows an end view : of a portion of a known electric retarder, Figure 2 shows similarly a portion of an electric retarder constructed in accordance with the invention, and Figure 3 is an axial section of this latter portion through III-III of Figure 2.
In all cases, an eddy current retarder with horizon-tal or substantially horizontal axis X is mounted cantilever 4 ~25~73;~) fashion on the output of a rear axle casing or gear box of a motor vehicle, said retarder comprising:
- an inductor stator 1 comprising a flange of substantially annular shape 2 which supports a ring of coils 3, even in number 2n, arranged so as to form by their ends two annular successions of flat magnetic poles with polarities alternating from one to the next, - and an armature rotor comprising two ferromagnetic material disks 4 adapted for axially surrounding the stator 10 and each travelling past a succession of poles of this stator from which they are separated by a small clearance or air gap.
Flange 2 is supported by the casing through a perforated bell shaped structure (not shown).
It is itself pierced centrally with a circular hole 5 of relatively large diameter D and at its periphery by 2n smaller holes each adapted for jointingly receiving a core 6 which forms a coil 3 with an electric wire winding 7 surrounding this core.
The cores 6 ad~vantageously endin enlarged shoes or pole portions 8 fixed to their axial ends and defining the above magnetic poles.
The different coils 3 are dimensioned and mounted so that they are spaced apart laterally from each other 25 by narrow gaps i, the width of these gaps being a few milli-meters and generally between 2 and 5mm, so as on the one hand to avoid risks of mutual jamming of these coils during mounting and on the other to make a minimum ventilation between these coils possible.
The diameter A of the outer circle described about coils 3 is substantially equal to the overall width L of the retarder, which width is that of flange 2, this flange being itself generally defined at its periphery by a bent back reinforcement and protective edge 12.
As for the diameter B of the circle described inside the coils, it is substantially equal to the diameter ~57~20 D of hole 5, being generally a little less than this diameter D.
Each of the two disks 4 is connected to a ring 9 through a ring of arms lO forming ventilation fins (a single arm being shown in Figures 1 and 2 for simplifying the drawings) and the two rings 9 are bolted to the periphery of a central plate ll itself fixed to the stub shaft extending from the casing (not shown) Of course, the outer diameter C of the rotor 10 portion formed by rings 9 and by the central plate 11 must always be less than the diameter B of the circle inscribed inside the coils.
In known embodiments, the number of coils 3 is equal to 8 (Figure l).
The ratio R between the diameters A and B is then relatively high, namely higher than 2, this ratio being generally 2.15 to 2.20.
The practical consequence of this state of affairs is that it is not possible to adopt for diameter C a value 20 higher than L/2.
Since the diameter E of the transmission shaft of the vehicle and the value of the torques transmissible by this shaft are directly related to this diameter C, we are confronted with a limit which proves troublesome 25 in certain constructions for which the dimension L is strictly limited, for example because of the spacing which exists between the two side members of the chassis of the vehicle if the retarder is to be housed between these side members.
To overcome this drawback, in accordance with 30 the invention, the even number of coils 3 has been given ; a value greater than 8.
In the embodiment illustrated in Figures 2 and 3, this number is equal to lO, which corresponds to the formation of a ring of lO magnetic poles facing each rotor 35 disk 4.
Experience shows that, under these conditions, 1257;~20 in a surprising way it is possible to obtain, for a given transverse width and a given axial length of the retarder, braking torques at least as high as with the eight coil construction, while substantially increasing the diameters B and D, and so the diameter C.
Thus, in a retarder comprising ten coils in accor-dance with the foregoing, the ratio R becomes less than
2, being of the order of 1.85: in other terms, the diameter C - which is extremely close to the diameters B and D -10 may henceforth reach a value higher than L/2, other thingsbeing equal.
To reduce as much as possible the overall width L
of the retarder, the coils of the ring - then spaced evenly apart about the axis X - are advantageously disposed so 15 that on each side of this axis there are two such coils vertically superimposed, that is to say symmetrical with each other with respect to the horizontal plane passing through said axis.
In addition flange 2, or more precisely its bent 20 back edge 12 is defined horizontally by two vertical sides practically tangential to these superimposed coils.
The complete periphery of this flange 2 - and so that of its bent back edge 12 - has advantageously the general shape of a hexagon with rounded corners, the two 25 above vertical sides being completed by four oblique sides each of which is substantially tangential, on the one hand to an uppermost or lowermost coil 3 and, on the other hand, to a coil contiguous with this endmost coil, the six sides being connected to each other by rounded sections.
There can also be seen in the drawings:
- at 13, an annular rim integrally molded with each disk 4 and with the ring 9 and the corresponding arms lO, which rim defines with these arms and this disk channels for the cooling air, - at 14, bores formed in rings 9 for receiving the fixing bolts, 1~57~20 - and at 15, the endmost flange of the universal joint 16, which flange is bolted to the central plate 11.
Purely by way of illustration, it can be mentioned tha~, for a retarder capable of generating braking torques of 170m.kg when cold and having an overall width L of 520 mm, the passage of 8 to lO coils in accordance with the inventionhas allowed the diameter B to be increased from 240 to 280mm, the ratio R thus passing from 2.18 to 1.84 and the outer diameters of the winding 7 being themselves 10 reduced from 140 to 120mm: this modification has allowed the diameter E of flange 15 to be increased from 180 to 220mm, that is to say that on a 170m.kg retarder a universal joint may be adopted which is usually reserved ~or 250m.kg retarders.
Following which, and whatever the embodiment adopted, a retarder is finally obtained whose construction is sufficiently clear from what has gone before.
This retarder presents numerous advantages with respect to those known heretofore and, in particular, the 20 following :
- it allows the use of a transmission shaft and universal joints of a larger diameter for a given overall width of the retarder, - its power to weight ratio is substantially 25 increased, being of the order of 10% when going over from 8 to lO poles for a given overall width, for an overall consumption of electricity which is not increased.
As is evident, and as it follows moreover already from what has gone before, the invention is in no wise 30 limited to those of its modes of application and embodiments which have been more especially considered, it embraces, on the contrary, all variants thereof particularly that where the even number of coils is twelve.
To reduce as much as possible the overall width L
of the retarder, the coils of the ring - then spaced evenly apart about the axis X - are advantageously disposed so 15 that on each side of this axis there are two such coils vertically superimposed, that is to say symmetrical with each other with respect to the horizontal plane passing through said axis.
In addition flange 2, or more precisely its bent 20 back edge 12 is defined horizontally by two vertical sides practically tangential to these superimposed coils.
The complete periphery of this flange 2 - and so that of its bent back edge 12 - has advantageously the general shape of a hexagon with rounded corners, the two 25 above vertical sides being completed by four oblique sides each of which is substantially tangential, on the one hand to an uppermost or lowermost coil 3 and, on the other hand, to a coil contiguous with this endmost coil, the six sides being connected to each other by rounded sections.
There can also be seen in the drawings:
- at 13, an annular rim integrally molded with each disk 4 and with the ring 9 and the corresponding arms lO, which rim defines with these arms and this disk channels for the cooling air, - at 14, bores formed in rings 9 for receiving the fixing bolts, 1~57~20 - and at 15, the endmost flange of the universal joint 16, which flange is bolted to the central plate 11.
Purely by way of illustration, it can be mentioned tha~, for a retarder capable of generating braking torques of 170m.kg when cold and having an overall width L of 520 mm, the passage of 8 to lO coils in accordance with the inventionhas allowed the diameter B to be increased from 240 to 280mm, the ratio R thus passing from 2.18 to 1.84 and the outer diameters of the winding 7 being themselves 10 reduced from 140 to 120mm: this modification has allowed the diameter E of flange 15 to be increased from 180 to 220mm, that is to say that on a 170m.kg retarder a universal joint may be adopted which is usually reserved ~or 250m.kg retarders.
Following which, and whatever the embodiment adopted, a retarder is finally obtained whose construction is sufficiently clear from what has gone before.
This retarder presents numerous advantages with respect to those known heretofore and, in particular, the 20 following :
- it allows the use of a transmission shaft and universal joints of a larger diameter for a given overall width of the retarder, - its power to weight ratio is substantially 25 increased, being of the order of 10% when going over from 8 to lO poles for a given overall width, for an overall consumption of electricity which is not increased.
As is evident, and as it follows moreover already from what has gone before, the invention is in no wise 30 limited to those of its modes of application and embodiments which have been more especially considered, it embraces, on the contrary, all variants thereof particularly that where the even number of coils is twelve.
Claims (4)
1. An electric retarder mounted on a gear casing of a vehicle transmission, comprising an annular inductor stator (1) mounted cantilever fashion on the casing considered, which stator is formed by a ring of coils (3) even in number, with axes parallel to that of the retarder, supported by a transverse flange (2) of general annular shape, each coil comprising a core (6) cylindrical in revolution and made from a magnetic material which passes through said flange and a winding of electric wire (7) which surrounds this core, these different coils being separated laterally from each other only by a small clearance (i), and the flange having formed therein a central hole (5) whose diameter (D) is at least equal to that (B) of the circle inscribed by the coils and a rotor comprising two armature disks `
(4) made from a ferromagnetic material which enclose the stator and are both supported by a central plate (11) itself mounted cantilever fashion on a stub shaft extending from the casing, each disk being interlocked, by means of a ring of arms (10) forming ventilation fins, with a support ring (9) fixed on said plate, and this plate being itself coupled to the end flange of a universal joint on the axial side opposite that where the stub shaft is located, characterized in that the even number of the coils is greater than eight, the ratio between the diameter (A) of the outer circle described about the coils (3) and the diameter (B) of the inner circle inscribed in the coils being then less than 2.
(4) made from a ferromagnetic material which enclose the stator and are both supported by a central plate (11) itself mounted cantilever fashion on a stub shaft extending from the casing, each disk being interlocked, by means of a ring of arms (10) forming ventilation fins, with a support ring (9) fixed on said plate, and this plate being itself coupled to the end flange of a universal joint on the axial side opposite that where the stub shaft is located, characterized in that the even number of the coils is greater than eight, the ratio between the diameter (A) of the outer circle described about the coils (3) and the diameter (B) of the inner circle inscribed in the coils being then less than 2.
2. Retarder according to claim 1, characterized in that the even number of coils is equal to 10.
3. Retarder according to claim 1, wherein the coils (3) are spaced apart evenly about the axis (X) of the retarder, characterized in that the ring formed by these coils is defined laterally on each side of said axis by two vertically superimposed coils and in that the stator flange (2) is defined laterally by two vertical sides substan-tially tangential to said coils two by two.
4. Retarder according to claim 3, characterized in that the stator flange (2) has an external hexagonal contour with rounded corners, which contour comprises, in addition to said two above defined vertical sides, four oblique sides substantially tangential each one to an uppermost or lowermost coil of the ring and to a coil contiguous with this endmost coil.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR8501893A FR2577357B1 (en) | 1985-02-11 | 1985-02-11 | IMPROVEMENTS ON ELECTRIC RETARDERS |
| FR8501893 | 1985-02-11 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1257320A true CA1257320A (en) | 1989-07-11 |
Family
ID=9316126
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000501414A Expired CA1257320A (en) | 1985-02-11 | 1986-02-07 | Electric retarders |
Country Status (14)
| Country | Link |
|---|---|
| JP (1) | JPS61236359A (en) |
| AT (1) | AT395922B (en) |
| BE (1) | BE904212A (en) |
| CA (1) | CA1257320A (en) |
| CH (1) | CH665316A5 (en) |
| DE (1) | DE3602612A1 (en) |
| ES (1) | ES8702091A1 (en) |
| FR (1) | FR2577357B1 (en) |
| GB (1) | GB2171852B (en) |
| IT (1) | IT1204020B (en) |
| MX (1) | MX160333A (en) |
| NL (1) | NL8600170A (en) |
| PT (1) | PT81983B (en) |
| SE (1) | SE8600579L (en) |
Families Citing this family (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3908234C2 (en) * | 1989-02-27 | 1994-01-13 | Hans Heinrich Holm Eggers | Additional braking device for vehicles |
| DE29506374U1 (en) * | 1995-04-13 | 1996-10-02 | FUNEX AG, Wollerau | Amusement device |
| DE19634464C2 (en) * | 1995-08-28 | 1998-07-16 | Lothar Kloft | Braking device of a wind turbine and method for its actuation |
| FR2840126B1 (en) * | 2002-05-21 | 2005-06-17 | Telma | ELECTROMAGNETIC RETARDER OF A VEHICLE |
| FR2840125B1 (en) * | 2002-05-21 | 2005-09-30 | Telma | ELECTROMAGNETIC RETARDER OF A VEHICLE |
| FR2842961B1 (en) * | 2002-07-29 | 2006-03-03 | Telma | ELECTROMAGNETIC RETARDER OF A VEHICLE PROVIDED WITH A SPEED MULTIPLIER DEVICE |
| FR2853158B1 (en) * | 2003-03-26 | 2005-06-17 | Telma | ELECTROMAGNETIC RETARDER OF A VEHICLE WITH A COPPER INDUSTRY |
| FR2856853B1 (en) * | 2003-06-27 | 2006-04-28 | Telma | DEVICE FOR ELECTROMAGNETICALLY SLOWING A VEHICLE |
| FR2863787B1 (en) * | 2003-12-11 | 2006-03-03 | Telma | ANNULAR ROTOR PERFECTED BY ELECTROMAGNETIC RETARDER |
| DE102004007434A1 (en) * | 2004-02-16 | 2005-09-22 | Minebea Co., Ltd. | Electric machine |
| EP1908673B1 (en) | 2006-10-06 | 2009-12-09 | Rolic Invest Sarl | Crawler vehicle |
| ITMI20070188U1 (en) | 2007-05-25 | 2008-11-26 | Rolic Invest Sarl | VEHICLE BAPTIST |
| FR2981523B1 (en) | 2011-10-17 | 2014-06-06 | Telma | INTERCHANGEABLE STATOR OF ELECTROMAGNETIC RETARDER AND ELECTROMAGNETIC RETARDER EQUIPPED WITH SUCH A STATOR |
| US9067500B2 (en) | 2012-05-21 | 2015-06-30 | Krassimire Mihaylov Penev | Self rechargeable synergy drive for a motor vehicle |
| US8646550B2 (en) | 2012-05-21 | 2014-02-11 | Krassimire Mihaylov Penev | Self rechargeable synergy drive for a motor vehicle |
| DE102013211051A1 (en) | 2013-06-13 | 2014-12-18 | Siemens Aktiengesellschaft | Eddy current brake for braking a rotating element, in particular a shaft, with at least one rotor disk and arrangement with such an eddy current brake |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE480770A (en) * | 1947-02-28 | |||
| FR1011762A (en) * | 1949-03-15 | 1952-06-26 | Silto S A | Improvements in electrodynamic devices operating by induction of eddy currents |
| DE929565C (en) * | 1952-04-13 | 1955-06-30 | Cie Telma | Eddy current brake |
| GB1147373A (en) * | 1965-09-16 | 1969-04-02 | Labavia | Improvements in or relating to vehicle transmissions including an eddy current retarder |
| FR1582167A (en) * | 1968-07-08 | 1969-09-26 | ||
| FR2421752A1 (en) * | 1978-04-06 | 1979-11-02 | Leroy Somer Moteurs | Vehicle transmission eddy current brake - has disc rotor fitted to transmission shaft and stator carries induction coils |
| FR2440110A1 (en) * | 1978-10-25 | 1980-05-23 | Labavia | IMPROVEMENTS ON EDGE CURRENCIES |
| ES8300980A1 (en) * | 1981-03-03 | 1982-11-01 | Frenos Electricos Unidos S A F | Improvements in vehicle axles provided with an incorporated electric brake. |
| FR2541054B1 (en) * | 1983-02-10 | 1986-06-20 | Labavia | IMPROVEMENTS ON ELECTRIC RETARDERS FOR VEHICLES |
-
1985
- 1985-02-11 FR FR8501893A patent/FR2577357B1/en not_active Expired
-
1986
- 1986-01-27 NL NL8600170A patent/NL8600170A/en not_active Application Discontinuation
- 1986-01-29 DE DE19863602612 patent/DE3602612A1/en active Granted
- 1986-02-06 CH CH470/86A patent/CH665316A5/en not_active IP Right Cessation
- 1986-02-06 PT PT81983A patent/PT81983B/en not_active IP Right Cessation
- 1986-02-07 ES ES551725A patent/ES8702091A1/en not_active Expired
- 1986-02-07 GB GB08603073A patent/GB2171852B/en not_active Expired
- 1986-02-07 CA CA000501414A patent/CA1257320A/en not_active Expired
- 1986-02-10 SE SE8600579A patent/SE8600579L/en not_active Application Discontinuation
- 1986-02-10 MX MX1492A patent/MX160333A/en unknown
- 1986-02-10 AT AT0032286A patent/AT395922B/en not_active IP Right Cessation
- 1986-02-10 JP JP61027757A patent/JPS61236359A/en active Pending
- 1986-02-10 IT IT09327/86A patent/IT1204020B/en active
- 1986-02-11 BE BE2/60925A patent/BE904212A/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| FR2577357A1 (en) | 1986-08-14 |
| SE8600579D0 (en) | 1986-02-10 |
| GB2171852A (en) | 1986-09-03 |
| IT8609327A0 (en) | 1986-02-10 |
| ES551725A0 (en) | 1987-01-01 |
| JPS61236359A (en) | 1986-10-21 |
| IT1204020B (en) | 1989-03-01 |
| GB2171852B (en) | 1988-08-17 |
| DE3602612C2 (en) | 1989-09-28 |
| CH665316A5 (en) | 1988-04-29 |
| NL8600170A (en) | 1986-09-01 |
| ES8702091A1 (en) | 1987-01-01 |
| GB8603073D0 (en) | 1986-03-12 |
| FR2577357B1 (en) | 1988-07-15 |
| BE904212A (en) | 1986-08-11 |
| AT395922B (en) | 1993-04-26 |
| PT81983A (en) | 1986-03-01 |
| ATA32286A (en) | 1992-08-15 |
| MX160333A (en) | 1990-02-01 |
| PT81983B (en) | 1992-05-29 |
| DE3602612A1 (en) | 1986-08-21 |
| SE8600579L (en) | 1986-08-12 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |