CA1058280A - System having a high-voltage, direct-current generator for ceiling electrodes - Google Patents
System having a high-voltage, direct-current generator for ceiling electrodesInfo
- Publication number
- CA1058280A CA1058280A CA250,390A CA250390A CA1058280A CA 1058280 A CA1058280 A CA 1058280A CA 250390 A CA250390 A CA 250390A CA 1058280 A CA1058280 A CA 1058280A
- Authority
- CA
- Canada
- Prior art keywords
- voltage
- electro
- insulator
- environmental system
- voltage generator
- 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
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
- A61N1/00—Electrotherapy; Circuits therefor
- A61N1/10—Applying static electricity
Landscapes
- Health & Medical Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- Biomedical Technology (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Radiology & Medical Imaging (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Generation Of Surge Voltage And Current (AREA)
- Rectifiers (AREA)
- Insulators (AREA)
- Electrostatic Separation (AREA)
Abstract
Abstract of the Disclosure Electro-environmental system comprising a direct-current high-voltage generator supplying ceiling electrodes disposed at a room ceiling by means of at least one insulator containing a cavity and producing an electrical direct-current field, the high-voltage generator having a high-voltage terminal and a ground terminal, wherein the high-voltage generator is disposed in the cavity of said insulator and is operated by alternating current from the power mains, the high-voltage terminal being disposed near the bottom of the insula-tor and the ground terminal being disposed near the top of the insulator.
Description
~ID58Z8~
The invention relates to a system having a direct-current high-voltage generator for ceiling electrodes which are to be fastened to the ceilingof a room by means of at least one insulator and serve for the production of an electrical direct-current field in fixed or movable rooms for human occup-ancy, the high-voltage generator having a high-voltage terminal and a ground terminal.
Electroenvironmental installations are known in which a plurality of electrodes are fastened to the ceiling, each by means of an insulator.
The electrodes are connected together electrically and are supplied through a limiting resistor from a high-voltage terminal of a high-voltage generator which is mounted on the wall of the room. The ground terminal is connected to the walls and floor of the room, so that in the room there is formed an electrical direct-current field whereby beneficial effects on the persons within the room can be achieved.
It is also known to operate a direct-current high-voltage generator standing on the floor by means of the alternating current from the power mains, a transformer being provided in the high-voltage generator and, on the secondary side thereof, a voltage multiplier circuit consisting of diodes and condensers .
In all cases there is needed between the high-voltage generator and the c~iling electrode a high-voltage supply line which, since it may carry seVerll thousand volts -- between 2 kV and 15 kV as a rule--depending on the height of the ceiling and the field strength desired, must be very well insul-ated. Nevertheless this conductor cannot be prevented from forming a secondary electrode on which dirt particles deposit themselves to an appreciable extent.
The invention is addressed to the problem of eliminating the diffic-ulties associated with the high-voltage conductor.
This problem is solved by the invention in that the high-voltage gen-erator is disposed in the cavity of the insulator and supplied by alternating -1- ~
8Z~O
current from the mains, the high-voltage terminal being near the underside of the insulator and the ground terminal being at or near the top of the insulat-or.
In this arrangement, the high-voltage lead is reduced to a small section running within the insulator. The mains voltage feeders running out-side of the insulator need only to be designed for low voltage and have no electrode effect of any kind. Through the use of the cavity of the insulator it is possible to house the high-voltage generator in the comparatively small interstice between the ceiling electrode and the ceiling, without the danger of flash-over or short circuits.
It is especially advantageous for the insulator to be in the shape of a pot open at the top with a hole in the bottom for the electrical connec-tion between the high-voltage terminal and the electrode. The bottom of the insulator serves, therefore, simultaneously as a safe, high-voltage lead-through.`
It is desirable for the hole to accommodate a metal coupling piece, such as a threaded bushing, for example, serving also for the mechanical joining of the electrode to the insulator. Thus, when the ceiling electrode is fastened in place the electrical connection is simultaneously created.
The invention relates to a system having a direct-current high-voltage generator for ceiling electrodes which are to be fastened to the ceilingof a room by means of at least one insulator and serve for the production of an electrical direct-current field in fixed or movable rooms for human occup-ancy, the high-voltage generator having a high-voltage terminal and a ground terminal.
Electroenvironmental installations are known in which a plurality of electrodes are fastened to the ceiling, each by means of an insulator.
The electrodes are connected together electrically and are supplied through a limiting resistor from a high-voltage terminal of a high-voltage generator which is mounted on the wall of the room. The ground terminal is connected to the walls and floor of the room, so that in the room there is formed an electrical direct-current field whereby beneficial effects on the persons within the room can be achieved.
It is also known to operate a direct-current high-voltage generator standing on the floor by means of the alternating current from the power mains, a transformer being provided in the high-voltage generator and, on the secondary side thereof, a voltage multiplier circuit consisting of diodes and condensers .
In all cases there is needed between the high-voltage generator and the c~iling electrode a high-voltage supply line which, since it may carry seVerll thousand volts -- between 2 kV and 15 kV as a rule--depending on the height of the ceiling and the field strength desired, must be very well insul-ated. Nevertheless this conductor cannot be prevented from forming a secondary electrode on which dirt particles deposit themselves to an appreciable extent.
The invention is addressed to the problem of eliminating the diffic-ulties associated with the high-voltage conductor.
This problem is solved by the invention in that the high-voltage gen-erator is disposed in the cavity of the insulator and supplied by alternating -1- ~
8Z~O
current from the mains, the high-voltage terminal being near the underside of the insulator and the ground terminal being at or near the top of the insulat-or.
In this arrangement, the high-voltage lead is reduced to a small section running within the insulator. The mains voltage feeders running out-side of the insulator need only to be designed for low voltage and have no electrode effect of any kind. Through the use of the cavity of the insulator it is possible to house the high-voltage generator in the comparatively small interstice between the ceiling electrode and the ceiling, without the danger of flash-over or short circuits.
It is especially advantageous for the insulator to be in the shape of a pot open at the top with a hole in the bottom for the electrical connec-tion between the high-voltage terminal and the electrode. The bottom of the insulator serves, therefore, simultaneously as a safe, high-voltage lead-through.`
It is desirable for the hole to accommodate a metal coupling piece, such as a threaded bushing, for example, serving also for the mechanical joining of the electrode to the insulator. Thus, when the ceiling electrode is fastened in place the electrical connection is simultaneously created.
2~ In a preferred embodiment, the high voltage generator is a single unit fitting within the cavity in the insulator, and having the high-voltage terminal on the bottom side and the mains and ground terminals on the top.
Such a unit can be manufactured separately. It then needs only to be inserted into the insulator, the high-voltage terminal being accessible through the bottom of the insulator and the mains and ground terminals being conveniently accessible at the top end.
In particular, the high-voltage terminal can have a contact spring or contact pin which is in contact with a metal connecting piece inserted into the hole. For the contact at the high-voltage end, therefore, it is sufficient ~OS8ZI~
simply to insert the high-voltage generator into the insulator-It is desirable that the high-voltage generato~ have a transfor-mer and that, on the secondary side thereof, a voltage multiplier circuit con-sisting of diodes and condensers be provided, which is housed in a grounded metal housing fitted to the cavity of the insulator and having a relatively large opening for the high-voltage terminal, the remaining cavities being filled, preferably with the use of a vacuum, with an insulating composition.
To special advantage, a device for the adjustment of the mains alternating voltage supplied to the high-voltage generator is provided in the mains line to the high-vol~age generator. This adjusting device can be a potentiometer or a voltage divider or an adjustable series resistance, but preferably a power-saving device using, for example, a silicon controlled rectifier.
With the adjusting device there can furthermore be associated an indicator means to indicate the preset direct-current high voltage. Espec-ially suitable for this purpose is a glow lamp shunted by a condenser and connected in series with a limiting resistor provided in the high-voltage generator, the series circuit being connected between the high-voltage side and the ground. The frequency of the lighting of the glow lamp is a clear measure of the high voltage.
Furthermore, a switch can be provided for shutting off the glow lamp, and a shunt resistance, preferably in the form of a Zener diode, which is in series with the limiting resistor, at least when the glow lamp is shut off~ These two resistances form a voltage divider which assures that no more than an acceptable low voltage is present on the side of the limiting resistance remote from the high-voltage terminal.
If one of the mains conductors is grounded and the corresponding mains terminal of the high-voltage generator serves simultaneously as a ground connection, there is no need for a separate ground lead.
~1~51~
When a plurality of ceiling electrodes is used, it is recommendable that only one insulator contain a high-voltage generator and that the ceiling electrodes be connected together electrically.
The invention will now be explained with the aid of the drawing.
Figure 1 is a diagrammatic representation of an electroenvironmentally con-trolled room with the high-voltage generator of the invention, Figure 2 is a diagrammatic longitudinal cross sec-tional view taken through an insulator containing a high-voltage generator, and figure 3 is a circuit diagram of the high-voltage generator.
A room 1 has grounded defining surfaces 3 (floor, wa]ls, ceiling).
Insulators 4 and 5 each bearing a ceiling electrode 6 are fastened to the ceiling. In the cavity 7 of the insulator 4 there is inserted a high-voltage generator 8 whose high-voltage terminal is connected through a mounting screw 9 to the ceiling electrode 6. The rest of the ceiling electrodes are conn-ected indirectly to the high-voltage terminal of generator 8 by means of conductors 10 between the adjacent electrodes. A cable 11, which can be laid under plaster, contains conductors carrying no more than low voltage, namely two conductors 12 and 13 for the mains ~lternating current, a ground conductor 14 and a meter conductor 15, which can all be enveloped in a braided shield 16 (Figure 3). If desired, the ground conductor 14 can be eliminated if the one mains conductor 13 is grounded (Figure 1~. An adjusting and indicating apparatus 17 is inserted into the leads of cable 11 and will be explained further in conjunction with figure 3.
As figure 2 shows, the insulator 4 is in the shape of a pot with a cylindrical internal cavity 7. On the outer wall there are a plurality of circumferential ribs 18 and at the upper end there is a flange 19 provided with holes 20 for mounting screws 21. The bottom of the pot 22 is provided with reinforcing groo~es 23; it has a central boss 24 containing a threaded metal bushing 25 to accommodate the screw 9, and a plurality of posts 26 for the l(~S8ZI~(~
support of the high-voltage generator 8.
The generator 8 has a metal housing 27 which fits into the cavity 7 and on i~s upper end it has mounting brackets which can be fastened by means of screws 29 to the insulator 4. The interior of this housing cont-ains a transformer 30 and a voltage multiplier circuit 31 whose detailed construction is explained in figure 3. On the housing 27 there is provided a terminal strip 32 wi~h four terminals 33, 34, 35 and 36 for the conductors of cable 11. from the terminals 33 and 34 two conductors go to the primary-side terminals 39 and 40 of the transformer. The terminals 41 and 42 on the secondary side of the transformer are connected to the inputs 43 and 44 of the voltage multiplier circuit. The input 43 is also connected by a con-ductor 45 to the housing 27, on the one hand, and to the terminal 35 on ter-minal strip 32, on the other. The output 46 on the high-voltage side of the voltage multiplier circuit 31 is connected through a limiting resistor Rl to a high-voltage terminal 47 in the form of a conical coil spring which, when the generator 8 is installed in its place, bears upon the metal threaded bushing 25. The high-voltage output 46 is furthermore connected through a limiting resistor ~2, a resistor R4 and a conductor 48 to the terminal 36 for the meter conductor. The remaining cavities in the housing 27 are filled 20 with an insulating composition 60.
The voltage multiplier circuit 31 has between the two inputs 43 and 44 a series circuit of a resistor R3, a diode D and a condenser C. The diode is part of a series of diodes in which an additional condenser C is connected between the anode of each diode and the cathode of the adjacent diode. If the transformer has a ratio of 1:6, one obtains from an alternating current mains voltage of 220 v, i.e., a peak-to-peak voltage of 312 V, a direct-current high voltage of approximately 12 kV. Often it may be neces~
sary to connect a plurality of diodes or condensers in series in the branches concerned.
~05~328~
The alternating mails voltage is fed in through terminals 49 and 50 and through a main switch 51, and its presence is indicated by a glow lamp 22. Into the mains conductors 12 and 13 there is connected an adjust-ing means 53, which can be, for example, a silicon controlled rectifier.
By this means the alternating current supplied to the high-voltage generator 8 can be adjusted, and with it the desired direct-current high voltage.
A housing 54 for the adjusting circuit 53 also accommodates an indicator means 55 which has a glow lamp 56 in series with a switch 57, and these are by-passed by a condenser Cl. A ~ener diode Z in the housing of the high-voltage generator is connected in parallel with the condenser Cl and forms, together with the limiting resistance R2 a voltage divider which is so designed that no more than 180 volts direct current, for example, can be present in the meter line 15. How rapidly the condenser Cl will be ch-arged to the firing voltage of the glow lamp 56 will depend on the high voltage at the output 46. When the lamp lights the condenser discharges itself rapidly. Consequently, the frequency of the lighting of the glow lamp 56 is a measure of the magnitude of the high voltage. The resistor R4 serves for the protection of the Zener diode Z. It prevents the latter from being destroyed if it is accidentally connected with the wrong polarity.
The construction represented herein can be modified in many ways.
For example, the insulators 5 can be normal insulators containing a smaller cavity or none at allO An ion source can also be located in the room 1.
The walls of room 1 can be provided with a covering offering better conduc-tion than normal masonry. A contact pin can be used insead of the coil spring 47.
It will be understood that the specification and examples are ill-ustrative but not limitative of the present invention and that other embodi-ments within the spirit and scope of the invention will suggest themselves to those skilled in the art.
Such a unit can be manufactured separately. It then needs only to be inserted into the insulator, the high-voltage terminal being accessible through the bottom of the insulator and the mains and ground terminals being conveniently accessible at the top end.
In particular, the high-voltage terminal can have a contact spring or contact pin which is in contact with a metal connecting piece inserted into the hole. For the contact at the high-voltage end, therefore, it is sufficient ~OS8ZI~
simply to insert the high-voltage generator into the insulator-It is desirable that the high-voltage generato~ have a transfor-mer and that, on the secondary side thereof, a voltage multiplier circuit con-sisting of diodes and condensers be provided, which is housed in a grounded metal housing fitted to the cavity of the insulator and having a relatively large opening for the high-voltage terminal, the remaining cavities being filled, preferably with the use of a vacuum, with an insulating composition.
To special advantage, a device for the adjustment of the mains alternating voltage supplied to the high-voltage generator is provided in the mains line to the high-vol~age generator. This adjusting device can be a potentiometer or a voltage divider or an adjustable series resistance, but preferably a power-saving device using, for example, a silicon controlled rectifier.
With the adjusting device there can furthermore be associated an indicator means to indicate the preset direct-current high voltage. Espec-ially suitable for this purpose is a glow lamp shunted by a condenser and connected in series with a limiting resistor provided in the high-voltage generator, the series circuit being connected between the high-voltage side and the ground. The frequency of the lighting of the glow lamp is a clear measure of the high voltage.
Furthermore, a switch can be provided for shutting off the glow lamp, and a shunt resistance, preferably in the form of a Zener diode, which is in series with the limiting resistor, at least when the glow lamp is shut off~ These two resistances form a voltage divider which assures that no more than an acceptable low voltage is present on the side of the limiting resistance remote from the high-voltage terminal.
If one of the mains conductors is grounded and the corresponding mains terminal of the high-voltage generator serves simultaneously as a ground connection, there is no need for a separate ground lead.
~1~51~
When a plurality of ceiling electrodes is used, it is recommendable that only one insulator contain a high-voltage generator and that the ceiling electrodes be connected together electrically.
The invention will now be explained with the aid of the drawing.
Figure 1 is a diagrammatic representation of an electroenvironmentally con-trolled room with the high-voltage generator of the invention, Figure 2 is a diagrammatic longitudinal cross sec-tional view taken through an insulator containing a high-voltage generator, and figure 3 is a circuit diagram of the high-voltage generator.
A room 1 has grounded defining surfaces 3 (floor, wa]ls, ceiling).
Insulators 4 and 5 each bearing a ceiling electrode 6 are fastened to the ceiling. In the cavity 7 of the insulator 4 there is inserted a high-voltage generator 8 whose high-voltage terminal is connected through a mounting screw 9 to the ceiling electrode 6. The rest of the ceiling electrodes are conn-ected indirectly to the high-voltage terminal of generator 8 by means of conductors 10 between the adjacent electrodes. A cable 11, which can be laid under plaster, contains conductors carrying no more than low voltage, namely two conductors 12 and 13 for the mains ~lternating current, a ground conductor 14 and a meter conductor 15, which can all be enveloped in a braided shield 16 (Figure 3). If desired, the ground conductor 14 can be eliminated if the one mains conductor 13 is grounded (Figure 1~. An adjusting and indicating apparatus 17 is inserted into the leads of cable 11 and will be explained further in conjunction with figure 3.
As figure 2 shows, the insulator 4 is in the shape of a pot with a cylindrical internal cavity 7. On the outer wall there are a plurality of circumferential ribs 18 and at the upper end there is a flange 19 provided with holes 20 for mounting screws 21. The bottom of the pot 22 is provided with reinforcing groo~es 23; it has a central boss 24 containing a threaded metal bushing 25 to accommodate the screw 9, and a plurality of posts 26 for the l(~S8ZI~(~
support of the high-voltage generator 8.
The generator 8 has a metal housing 27 which fits into the cavity 7 and on i~s upper end it has mounting brackets which can be fastened by means of screws 29 to the insulator 4. The interior of this housing cont-ains a transformer 30 and a voltage multiplier circuit 31 whose detailed construction is explained in figure 3. On the housing 27 there is provided a terminal strip 32 wi~h four terminals 33, 34, 35 and 36 for the conductors of cable 11. from the terminals 33 and 34 two conductors go to the primary-side terminals 39 and 40 of the transformer. The terminals 41 and 42 on the secondary side of the transformer are connected to the inputs 43 and 44 of the voltage multiplier circuit. The input 43 is also connected by a con-ductor 45 to the housing 27, on the one hand, and to the terminal 35 on ter-minal strip 32, on the other. The output 46 on the high-voltage side of the voltage multiplier circuit 31 is connected through a limiting resistor Rl to a high-voltage terminal 47 in the form of a conical coil spring which, when the generator 8 is installed in its place, bears upon the metal threaded bushing 25. The high-voltage output 46 is furthermore connected through a limiting resistor ~2, a resistor R4 and a conductor 48 to the terminal 36 for the meter conductor. The remaining cavities in the housing 27 are filled 20 with an insulating composition 60.
The voltage multiplier circuit 31 has between the two inputs 43 and 44 a series circuit of a resistor R3, a diode D and a condenser C. The diode is part of a series of diodes in which an additional condenser C is connected between the anode of each diode and the cathode of the adjacent diode. If the transformer has a ratio of 1:6, one obtains from an alternating current mains voltage of 220 v, i.e., a peak-to-peak voltage of 312 V, a direct-current high voltage of approximately 12 kV. Often it may be neces~
sary to connect a plurality of diodes or condensers in series in the branches concerned.
~05~328~
The alternating mails voltage is fed in through terminals 49 and 50 and through a main switch 51, and its presence is indicated by a glow lamp 22. Into the mains conductors 12 and 13 there is connected an adjust-ing means 53, which can be, for example, a silicon controlled rectifier.
By this means the alternating current supplied to the high-voltage generator 8 can be adjusted, and with it the desired direct-current high voltage.
A housing 54 for the adjusting circuit 53 also accommodates an indicator means 55 which has a glow lamp 56 in series with a switch 57, and these are by-passed by a condenser Cl. A ~ener diode Z in the housing of the high-voltage generator is connected in parallel with the condenser Cl and forms, together with the limiting resistance R2 a voltage divider which is so designed that no more than 180 volts direct current, for example, can be present in the meter line 15. How rapidly the condenser Cl will be ch-arged to the firing voltage of the glow lamp 56 will depend on the high voltage at the output 46. When the lamp lights the condenser discharges itself rapidly. Consequently, the frequency of the lighting of the glow lamp 56 is a measure of the magnitude of the high voltage. The resistor R4 serves for the protection of the Zener diode Z. It prevents the latter from being destroyed if it is accidentally connected with the wrong polarity.
The construction represented herein can be modified in many ways.
For example, the insulators 5 can be normal insulators containing a smaller cavity or none at allO An ion source can also be located in the room 1.
The walls of room 1 can be provided with a covering offering better conduc-tion than normal masonry. A contact pin can be used insead of the coil spring 47.
It will be understood that the specification and examples are ill-ustrative but not limitative of the present invention and that other embodi-ments within the spirit and scope of the invention will suggest themselves to those skilled in the art.
Claims (14)
PROPERTY OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. Electro-environmental system comprising a direct-current high-voltage generator supplying ceiling electrodes disposed at a room ceiling by means of at least one insulator containing a cavity and producing an electrical direct-current field, the high voltage generator having a high-voltage terminal and a ground terminal, wherein the high-voltage generator is disposed in the cavity of said insulator and is operated by alternating current from the power mains, the high-voltage terminal being disposed near the bottom of the insulator and the ground terminal being disposed near the top of the insulator.
2. Electro-environmental system as claimed in claim 1 wherein said insulator is pot-shaped with the open side towards the ceiling and compri-sing an opening in the bottom thereof to accommodate an electrical connection between the high-voltage terminal of the high-voltage generator disposed within said insulator and the said ceiling electrode disposed therebelow.
3. Electro-environmental system as claimed in claim 2 wherein said opening accommodates a metal coupling piece for mechanical fastening of the electrode to said insulator.
4. Electro-environmental system as claimed in claim 3 wherein said metal coupling piece is a threaded bushing.
5. Electro-environmental system as claimed in claim 1 wherein the high-voltage generator is a structural unit adapted to fit snugly into said insulator cavity and wherein said high-voltage terminal is disposed on the bottom and the ground terminal and the power supply terminals are at the top thereof.
6. Electro-environmental system as claimed in claim 5 wherein the high-voltage terminal comprises a contact spring or pin which is in contact with the metal connecting piece disposed within said opening.
7. Electro-environmental system as claimed in claim 5 wherein the high-voltage generator comprises a transformer and in the secondary side of the transformer a multiplier circuit consisting of diodes and condensers contained in a metal housing adapted to fit snugly into the insulator cavity and having a relatively large opening for the high-voltage terminal, and wherein the remaining cavities are filled with an insulating composition.
8. Electro-environmental system as claimed in claim 1 also comprising means for the adjustment of the alternating current supply voltage being fed to said high-voltage generator.
9. Electro-environmental system as claimed in claim 8 wherein said adjusting means is associated with indicator means for indicating the adju-sted direct-current high voltage.
10. Electro-environmental system as claimed in claim 9 wherein said adjusting means is associated with indicator means for indicating the adj-usted direct-current high voltage.
11. Electro-environmental system as claimed in claim 9 wherein the indicator means comprises a glow lamp shunted by a condenser connected in series with a limiting resistor disposed within the high-voltage generator, the series circuit being connected between the high-voltage side and the ground.
12. Electro-environmental system as claimed in claim 10 wherein a switch is provided for shutting off the said glow lamp and a shunt resist-ance is provided in series with a limiting resistor when glow lamp is shut off.
13. Electro-environmental system as claimed in claim 1 wherein one of the conductors of the power supply is grounded and the corresponding terminal of the high-voltage generator simultaneously serves as a ground terminal.
14. Electro-environmental system as claimed in claim 1 wherein of a plurality of ceiling electrodes only one insulator thereof comprises in its cavity said high-voltage generator, the remaining ceiling electrodes being connected electrically to one another.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19752522124 DE2522124A1 (en) | 1975-05-17 | 1975-05-17 | ARRANGEMENT WITH A DC HIGH VOLTAGE GENERATOR FOR CEILING ELECTRODES |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1058280A true CA1058280A (en) | 1979-07-10 |
Family
ID=5946881
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA250,390A Expired CA1058280A (en) | 1975-05-17 | 1976-04-15 | System having a high-voltage, direct-current generator for ceiling electrodes |
Country Status (14)
| Country | Link |
|---|---|
| JP (1) | JPS51140276A (en) |
| AU (1) | AU1299076A (en) |
| BE (1) | BE838455A (en) |
| BR (1) | BR7602604A (en) |
| CA (1) | CA1058280A (en) |
| DE (1) | DE2522124A1 (en) |
| DK (1) | DK211976A (en) |
| ES (1) | ES446930A1 (en) |
| FI (1) | FI761387A (en) |
| FR (1) | FR2312127A1 (en) |
| IT (1) | IT1064117B (en) |
| NL (1) | NL7604748A (en) |
| NO (1) | NO761518L (en) |
| SE (1) | SE7605465L (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5828602Y2 (en) * | 1978-10-31 | 1983-06-22 | 株式会社白寿生科学研究所 | Electrode plate for electric field therapy equipment |
| CN107572288A (en) * | 2017-09-22 | 2018-01-12 | 江苏绿源健康铝箔科技有限公司 | A kind of rewinding machine that electrostatic function is removed with removal of impurities |
-
1975
- 1975-05-17 DE DE19752522124 patent/DE2522124A1/en active Pending
-
1976
- 1976-02-11 BE BE164237A patent/BE838455A/en unknown
- 1976-02-25 IT IT48274/76A patent/IT1064117B/en active
- 1976-04-12 ES ES446930A patent/ES446930A1/en not_active Expired
- 1976-04-14 AU AU12990/76A patent/AU1299076A/en not_active Expired
- 1976-04-15 CA CA250,390A patent/CA1058280A/en not_active Expired
- 1976-04-28 BR BR2604/76A patent/BR7602604A/en unknown
- 1976-05-03 NO NO761518A patent/NO761518L/no unknown
- 1976-05-04 NL NL7604748A patent/NL7604748A/en unknown
- 1976-05-13 DK DK211976A patent/DK211976A/en not_active Application Discontinuation
- 1976-05-13 SE SE7605465A patent/SE7605465L/en unknown
- 1976-05-14 JP JP51055229A patent/JPS51140276A/en active Pending
- 1976-05-14 FR FR7614661A patent/FR2312127A1/en not_active Withdrawn
- 1976-05-17 FI FI761387A patent/FI761387A/fi not_active Application Discontinuation
Also Published As
| Publication number | Publication date |
|---|---|
| NO761518L (en) | 1976-11-18 |
| FR2312127A1 (en) | 1976-12-17 |
| FI761387A (en) | 1976-11-18 |
| JPS51140276A (en) | 1976-12-03 |
| BE838455A (en) | 1976-05-28 |
| NL7604748A (en) | 1976-11-19 |
| DK211976A (en) | 1976-11-18 |
| AU1299076A (en) | 1977-10-20 |
| BR7602604A (en) | 1977-01-18 |
| DE2522124A1 (en) | 1976-11-25 |
| IT1064117B (en) | 1985-02-18 |
| SE7605465L (en) | 1976-11-18 |
| ES446930A1 (en) | 1977-05-16 |
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