CA2060172C - Body sense speaker - Google Patents
Body sense speakerInfo
- Publication number
- CA2060172C CA2060172C CA 2060172 CA2060172A CA2060172C CA 2060172 C CA2060172 C CA 2060172C CA 2060172 CA2060172 CA 2060172 CA 2060172 A CA2060172 A CA 2060172A CA 2060172 C CA2060172 C CA 2060172C
- Authority
- CA
- Canada
- Prior art keywords
- oscillation
- ring
- speakers
- tubular member
- magnetic field
- 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 - Fee Related
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
- H04R9/06—Loudspeakers
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Details Of Audible-Bandwidth Transducers (AREA)
- Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
Abstract
There is disclosed a body speaker comprising a casing having an upper part and a lower part, the upper part having a central circular aperture closed by a cap, a thin magnetic disk with a small diameter centrally attached on the inside of the cap, atubular member fixed around the central circular aperture of the upper part, a solenoid coil wound around the tubular member, and an oscillation body for oscillating in response to variation of the magnetic field of the solenoid coil, wherein gaps are formed between the upper and lower surfaces of the oscillation body and the inside surfaces of the upper and lower part of the casing when the oscillation body is fixed on the inside wall of the casing by means of the oscillation ring, so that the oscillation body freely may freely oscillates upward and downward in responseto variation of the magnetic field of the solenoid coilconducting current.
Description
~Q~ 2 TITLE OP T~E l~Vh~llON
BODY SENSE SPEAKER
TECUNICAL BACKGROUND
The present invention concerns a bodily sensed speaker, more particularly musical sound reproducing sYstem comprising a plurality of bodily sensed speakers.
To effectively enioy music usually it requires us to sufficiently feel the rhythm, tone, and melody played. The conventional musical sound reproducing system has focused on the ear for the effective feeling of these characteristics.
Meanwhile, the rhythm has a close connection with bodily movements such as dance. Hence, it maY be considered that the rhythm is a factor of the music which is felt not only through ÇiO~7;~
the ear, but also through the body.
SU~NARY OF T~- lhvh~llON
It is an obiect of the present invention to provide a bodily sensed speaker (hereinafter referred to as "body speaker") of musical sound reproducing system which enables us to feel the music not only through the ear, but also through the body.
It is another object of the present invention to provide music cushion equipped with a plurality of the body speakers.
It is a further object of the present invention to provide music player's waistcoat equipped with a plurality of the body speakers.
It is still another object of the present invention to provide music player's belt equipped with a plurality of the body speakers.
It is further another object of the present invention to provide a mattress equipped with a plurality of the bodyspeakers.
According to the present inventionl a body speaker comprises a casing having an upper part and a lower part, the upper parthaving a central circular aperture closed by a caP, a thin magnetic disk with a small diameter centrally attached on the 2 ~ t~L 7 2 inside of the cap, a tubular member fixed around the centralcircular aperture of the upper part, a solenoid coil wound aroundthe tubular member, and an oscillation body for oscillating in response to variation of the magnetic field of the solenoid coil, the oscillation body comprising a core consisting of a disk and a cylindrical projection formed centrally and integrally with the disk, a flat ring-shaped permanent magnet fixedly received around the cylindrical projection, a flat ring-shaped support ring concentrically fixed on the permanent magnet, and at least a resilient membranous oscillation ring fixed around the oscillation body, the outer edge portions of the oscillation ringbeing fixed along the inside wall of the casing, the lower end portion of the tubular member with the solenoid coil beingloosely inserted into the gap between the side wall of the cylindrical projection of the core and the inside surfaces of the permanent magnet and support ring, wherein gaps are formedbetween the upper and lower surfaces of the oscillation body and the inside surfaces of the upper and lower part of the casing when the oscillation body is fixed on the inside wall of thecasing by means of the oscillation ring, so that the oscillation body freely may freely oscillates upward and downward in responseto variation of the magnetic field of the solenoid coilconducting current.
According to one aspect of the present invention, one end of the tubular member has a flange formed perpendicularly to the side surface of the tubular member, so that the flange may be supported by the peripheral portions of the central circular 2 C?~i~3~ 7 2 aperture of the upper part of the casing. Also it is preferable to provide the other end of the tubular member with a short flange so as to prevent the solenoid coil wound around the tubular member from escaping from the tubular member.
According to another aspect of the present invention, the casing may comprise an upper part, a lower part, and a frame for supporting the upper and lower parts.
According to still another aspect of the present invention, the cap closing the central aperture of the upper part is shapedconcave like a cup with the bottom having a plurality of holes for passing the magnetic field lines of a small flat permanent magnet that is attached to the inside of the bottom and may beshaped like a disk or ring with or without a plurality of holes.
The upper end of the cup is provided with a flange rested on the upper flange of the one end of the tubular member. The side andbottom portions of the cap are inserted in the tubular member.
According to a further aspect of the present invention, there may be provided two resilient membranous oscillation rings, one of which is interposed between the disk portion of the core and the flat ring-shaped permanent magnet, and the other betweenthe permanent magnet and the flat ring-shaped support ring.
According to further another aspect of the present invention, a resilient body such as rubber may be attached to the insides of the upper and lower parts of the casing so as to help 2~
the oscillation body oscillate more resiliently~
The present invention will now be described more specifically with reference to the drawings attached only by way of example.
BRIEF DESCRIPTION OF T~E ATTAC~FD DR~INGS
Fig. 1 is an exploded perspective view of a body speaker according one embodiment of the present invention;
Fig. 2 is a cross sectional view of a body speaker of Fig.
1; and Fig. 3 is a view similar to Fig. 2 for illustrating another embodiment of the present invention;
Fig. 4 is a perspective view of the tubular member shown in Fig. 3;
Fig. 5 is an exploded perspective view for illustrating the small flat permanent magnet being attached to the inside of the bottom of the cap as shown in Fig. 3;
Fig. 6 is an enlarged cross sectional view of the tubular member in which the cap and small flat permanent magnet are inserted as shown in Fig. 3;
-Fig. 7 is a perspective view of the resilient membranous oscillation rings as shown in Fig. 3; and Figs. 8A, 8B, 8C and 8D illustrate various embodiments of a musical sound reproducing system according to the present invention.
D~TAIL~D De~CRIrTION OF CRRTAIN PRRPeRRED ~hBODIHENTS
Referring to Figs. 1 and 2, an oscillation body is mounted inside a casing that comprises an ~pper part 9 with a centralcircular aperl;ure 10, a cap 14 closing the aperture 10, and a lower part 5. A thin magnetic disk 20 with a small diameter is centrally att;lched on the inside of the cap 14. The oscillation body comprises a core consisting of a disk 17 and a cylindrical proiection 18 formed centrally and integrally with the disk 17, a flat ring-chaped permanent magnet 19, a flat ring-shaped support ring 16 and a resilient meobranous oscillation ring 2.
A tubular member 11 is fixed around the central circular aperture 10 o~ the upper part 9, and a solenoid coil 12 is wound around the tubular member 11.
The flat ring-shaped permanent magnet 19 is fixedlv receiYed around the c,~lindrical projection 18 with a proper gap bet~eenthe side wall of the projection and the inside surface of the per~anent magnet.
2 ~?4~ 7 2 As shown in ~ig. 2, the resilient membranous oscillation ring 2 is fixedly arranged between the permanent magnet 19 andthe support ring 16. Por example, the oscillation ring 2 has aplurality of inner and outer lugs 3, 4, which inner lugs 3 are interposed between the support ring 16 and permanent magnet 19 to fix the oscillation ring 2.
Thus, the support ring 16, oscillation ring 2, permanent magnet 19 and core 17, 18 are integrally fixed together so as not to allow any relative motions therebetween. Meanwhile, there is formed a suitable gap between the inside surface of the support ring 16 and the side wall of the cylindrical projection 18. The oscillation body thus obtained is suspended inside the casing by means of the outer lugs 4 interposed between the edge portionsof the upper and lower part 9 and 5 as shown in Fig. 2.
Suitable synthetic resin and adhesive may be used for fixedly assembling the parts of the oscillation body. Means for fixing the oscillation ring to the inside wall of the casing may comprise a plurality of outer lugs 4 integrally formed with theoscillation ring, a plurality of grooves 7 forned on the upperend of the lower part to correspond with the lugs, and the lowerend of the upper part for holding the lugs against the bottom of the grooves.
When the oscillation body is completely assembled, the tubular member 11 with the solenoid coil 12 requires to be freely moved between the inside surfaces of the support ring 16 and i~0~ 72 permanent magnet 19 and the side wall of the projection 18.
Suitable gaps must be formed between the upper and lower surfaces of the oscillation body and the upper and lower inner surfaces of the casing.
Preferably, one end of the tubular member 11, as shown in Figs. 31 4 and 6, has a flange 11' formed perpendicularly to the side surface of the tubular member, so that the flange 11' may be supported by the peripheral portions of the central circular aperture 10 of the upper part of the casing. Thus the tubular member 11 may be more firmly fixed to the upper part. Also it is more preferable to provide the other end of the tubular member (11) with a short flange (11") so as to prevent the solenoid coil (12) wound around the tubular member (11) from escapingtherefrom.
Moreover, the casing maY comprise an upper and lower parts 9' and 5' made of A light metal such as aluminum, and a plastic frame 21 for supporting the upper and lower parts. The plastic frame 21 is shaped as a short cylinder with a circular inner flange 21' formed along the half line of the inside. The flange 21' is to support the edge portions of the oscillation rings 7' and 7". In this case, one oscillation ring 7" is interposed between the disk portion of the core and the flat ring-shaped permanent magnet 19, and the other 7' between the permanent magnet 19 and the flat ring-shaped support ring 16, so that the oscillation body may be more firmly and resiliently hung by means of the two oscillation rings, whose peripheral portions are 2 ~4i~L 7 2 firmly fi~ed ~o the plastic frame 21. The peripheral portions of the two oscillation rings 7' and 7" are respectively interposed bet~een the ring-shaped end surfaces of the upper and lower parts9' and 5' of the casing and the upper and lower surfaces of the flange 21' of the frame 21.
The resilient membranous oscillation rings 7', 7" shown in Fig. 3 has a central opening 7b for receiving the projection 18 of the core, and a plurality of arcuate slits for increasing the flexibility oJ the oscillation rings. The material used to makethe oscillation rings may be a metal, nonferrous metal, syntheticresin, paper, or others to inherently maintain suitableresiliency.
As shown in Figs. 5 and 6, the cap 14 closing the central aperture 10 of the upper part 9' is shaped concave like a cup with the bottom having a plurality of holes 14" for passing the magnetic field lines of a small flat permanent magnet 20 that is attached to the inside of the bottom and may be shaped like a disk or ring with or without a plurality of holes. The upper end of the cap is provided with a flange 14' rested on the upperflange 11' of the one end of the tubular member 11. The side andbottom portions of the cap 14 are inserted in the tubular member.
Preferably, a resilient body 22 such as rubber may be attached to the insides of the upper and lower parts 9' and 5' of the casing so as to help the oscillation body oscillate moreresiliently.
g 2(~ 7~
There are shown in Figs. 8A, 8B, 8C and 8D musical sound reproducing systems respectively comprising a cushion, waistcoat,belt, and mattress equipped with the inventive body speakers, and an audio amplifier.
One of the methods for installing the body speakers in a cushion may be a process for integrally molding the cushion withthe body speaLers arranged in a pattern in a mold.
In operation of the body speakers, when the sound signals containing music generated by the audio amplifier is conducted into the solenoid coil of the oscillation body 16, 17, 18, 19, 2, 7', 7" in the casing, the oscillation body oscillates upwardsand downwards. The oscillation is caused by the interaction between variation of the magnetic field of the solenoid coil and the magnetic field of the permanent magnet 19. Consequently, the casing containing the oscillation body altogether oscillates according to variation of the intensity of the sound signals, so that the user of the cushion, waistcoat or belt containing the inventive body speakers vividly feels the rhythm of the music loaded on the sound signals through his body sensing the oscillation of the speakers.
Meanwhile, there exists always a mutual attraction between the thin magnetic disk 20 and the upper surface of thecylindrical projection 18 due to their magnetic fields, which helps the oscillation of the oscillation body 16, 17, 18, 19, 2, 7', 7" when the solenoid coil conducts currents.
2~6~72 The inventive body sPeakers more effectively oscillate in response to the sound signals loaded with music mostly containing medium or low tones. Hence, when listening to music reproduced by a stereo sound system comprising the inventive body speakers, only the medium and low tone signals of the music may be conducted into the body speakers so as to cause the bodyspeakers to more effectively oscillate.
If the players of a jazz or popular music band composed of electric guitars, electronic organ, drum, etc. put on a waistcoat or belt equipped with the inventive body speakers, they may moreeffectively play music, fullY absorbed therein, because theybodily sense the rhythm of the music that they tangibly feel through the body speakers.
Of course, it is preferable that the inventive body speakers are arranged to be in the part parts of a waistcoat or belt that are positioned in the back of the user.
Particularly, if the inventive body speakers are suitably arranged in a back cushion of a seat of a vehicle, and connected with the audio amplifier of a stereo sound system of the vehicle, there is obtained a very effective musical sound reproducing system of the vehicle.
Naturally, the inventive body sense speakers may not only be used in all kinds of cushions or pads which are installed in the seats or beds arranged in a hotel, hosPital, ship, airplane, theater, cafe, music hall, electronic game room, etc for sitting, reclining, or supporting the head of a person1 but also suitably arranged in the floor of a dance hall in order to let the dancing persons bodily feel the rhythms of dance music transmitted through their soles.
Additionally, the body sense speakers may be installed in footwear.
, . --
BODY SENSE SPEAKER
TECUNICAL BACKGROUND
The present invention concerns a bodily sensed speaker, more particularly musical sound reproducing sYstem comprising a plurality of bodily sensed speakers.
To effectively enioy music usually it requires us to sufficiently feel the rhythm, tone, and melody played. The conventional musical sound reproducing system has focused on the ear for the effective feeling of these characteristics.
Meanwhile, the rhythm has a close connection with bodily movements such as dance. Hence, it maY be considered that the rhythm is a factor of the music which is felt not only through ÇiO~7;~
the ear, but also through the body.
SU~NARY OF T~- lhvh~llON
It is an obiect of the present invention to provide a bodily sensed speaker (hereinafter referred to as "body speaker") of musical sound reproducing system which enables us to feel the music not only through the ear, but also through the body.
It is another object of the present invention to provide music cushion equipped with a plurality of the body speakers.
It is a further object of the present invention to provide music player's waistcoat equipped with a plurality of the body speakers.
It is still another object of the present invention to provide music player's belt equipped with a plurality of the body speakers.
It is further another object of the present invention to provide a mattress equipped with a plurality of the bodyspeakers.
According to the present inventionl a body speaker comprises a casing having an upper part and a lower part, the upper parthaving a central circular aperture closed by a caP, a thin magnetic disk with a small diameter centrally attached on the 2 ~ t~L 7 2 inside of the cap, a tubular member fixed around the centralcircular aperture of the upper part, a solenoid coil wound aroundthe tubular member, and an oscillation body for oscillating in response to variation of the magnetic field of the solenoid coil, the oscillation body comprising a core consisting of a disk and a cylindrical projection formed centrally and integrally with the disk, a flat ring-shaped permanent magnet fixedly received around the cylindrical projection, a flat ring-shaped support ring concentrically fixed on the permanent magnet, and at least a resilient membranous oscillation ring fixed around the oscillation body, the outer edge portions of the oscillation ringbeing fixed along the inside wall of the casing, the lower end portion of the tubular member with the solenoid coil beingloosely inserted into the gap between the side wall of the cylindrical projection of the core and the inside surfaces of the permanent magnet and support ring, wherein gaps are formedbetween the upper and lower surfaces of the oscillation body and the inside surfaces of the upper and lower part of the casing when the oscillation body is fixed on the inside wall of thecasing by means of the oscillation ring, so that the oscillation body freely may freely oscillates upward and downward in responseto variation of the magnetic field of the solenoid coilconducting current.
According to one aspect of the present invention, one end of the tubular member has a flange formed perpendicularly to the side surface of the tubular member, so that the flange may be supported by the peripheral portions of the central circular 2 C?~i~3~ 7 2 aperture of the upper part of the casing. Also it is preferable to provide the other end of the tubular member with a short flange so as to prevent the solenoid coil wound around the tubular member from escaping from the tubular member.
According to another aspect of the present invention, the casing may comprise an upper part, a lower part, and a frame for supporting the upper and lower parts.
According to still another aspect of the present invention, the cap closing the central aperture of the upper part is shapedconcave like a cup with the bottom having a plurality of holes for passing the magnetic field lines of a small flat permanent magnet that is attached to the inside of the bottom and may beshaped like a disk or ring with or without a plurality of holes.
The upper end of the cup is provided with a flange rested on the upper flange of the one end of the tubular member. The side andbottom portions of the cap are inserted in the tubular member.
According to a further aspect of the present invention, there may be provided two resilient membranous oscillation rings, one of which is interposed between the disk portion of the core and the flat ring-shaped permanent magnet, and the other betweenthe permanent magnet and the flat ring-shaped support ring.
According to further another aspect of the present invention, a resilient body such as rubber may be attached to the insides of the upper and lower parts of the casing so as to help 2~
the oscillation body oscillate more resiliently~
The present invention will now be described more specifically with reference to the drawings attached only by way of example.
BRIEF DESCRIPTION OF T~E ATTAC~FD DR~INGS
Fig. 1 is an exploded perspective view of a body speaker according one embodiment of the present invention;
Fig. 2 is a cross sectional view of a body speaker of Fig.
1; and Fig. 3 is a view similar to Fig. 2 for illustrating another embodiment of the present invention;
Fig. 4 is a perspective view of the tubular member shown in Fig. 3;
Fig. 5 is an exploded perspective view for illustrating the small flat permanent magnet being attached to the inside of the bottom of the cap as shown in Fig. 3;
Fig. 6 is an enlarged cross sectional view of the tubular member in which the cap and small flat permanent magnet are inserted as shown in Fig. 3;
-Fig. 7 is a perspective view of the resilient membranous oscillation rings as shown in Fig. 3; and Figs. 8A, 8B, 8C and 8D illustrate various embodiments of a musical sound reproducing system according to the present invention.
D~TAIL~D De~CRIrTION OF CRRTAIN PRRPeRRED ~hBODIHENTS
Referring to Figs. 1 and 2, an oscillation body is mounted inside a casing that comprises an ~pper part 9 with a centralcircular aperl;ure 10, a cap 14 closing the aperture 10, and a lower part 5. A thin magnetic disk 20 with a small diameter is centrally att;lched on the inside of the cap 14. The oscillation body comprises a core consisting of a disk 17 and a cylindrical proiection 18 formed centrally and integrally with the disk 17, a flat ring-chaped permanent magnet 19, a flat ring-shaped support ring 16 and a resilient meobranous oscillation ring 2.
A tubular member 11 is fixed around the central circular aperture 10 o~ the upper part 9, and a solenoid coil 12 is wound around the tubular member 11.
The flat ring-shaped permanent magnet 19 is fixedlv receiYed around the c,~lindrical projection 18 with a proper gap bet~eenthe side wall of the projection and the inside surface of the per~anent magnet.
2 ~?4~ 7 2 As shown in ~ig. 2, the resilient membranous oscillation ring 2 is fixedly arranged between the permanent magnet 19 andthe support ring 16. Por example, the oscillation ring 2 has aplurality of inner and outer lugs 3, 4, which inner lugs 3 are interposed between the support ring 16 and permanent magnet 19 to fix the oscillation ring 2.
Thus, the support ring 16, oscillation ring 2, permanent magnet 19 and core 17, 18 are integrally fixed together so as not to allow any relative motions therebetween. Meanwhile, there is formed a suitable gap between the inside surface of the support ring 16 and the side wall of the cylindrical projection 18. The oscillation body thus obtained is suspended inside the casing by means of the outer lugs 4 interposed between the edge portionsof the upper and lower part 9 and 5 as shown in Fig. 2.
Suitable synthetic resin and adhesive may be used for fixedly assembling the parts of the oscillation body. Means for fixing the oscillation ring to the inside wall of the casing may comprise a plurality of outer lugs 4 integrally formed with theoscillation ring, a plurality of grooves 7 forned on the upperend of the lower part to correspond with the lugs, and the lowerend of the upper part for holding the lugs against the bottom of the grooves.
When the oscillation body is completely assembled, the tubular member 11 with the solenoid coil 12 requires to be freely moved between the inside surfaces of the support ring 16 and i~0~ 72 permanent magnet 19 and the side wall of the projection 18.
Suitable gaps must be formed between the upper and lower surfaces of the oscillation body and the upper and lower inner surfaces of the casing.
Preferably, one end of the tubular member 11, as shown in Figs. 31 4 and 6, has a flange 11' formed perpendicularly to the side surface of the tubular member, so that the flange 11' may be supported by the peripheral portions of the central circular aperture 10 of the upper part of the casing. Thus the tubular member 11 may be more firmly fixed to the upper part. Also it is more preferable to provide the other end of the tubular member (11) with a short flange (11") so as to prevent the solenoid coil (12) wound around the tubular member (11) from escapingtherefrom.
Moreover, the casing maY comprise an upper and lower parts 9' and 5' made of A light metal such as aluminum, and a plastic frame 21 for supporting the upper and lower parts. The plastic frame 21 is shaped as a short cylinder with a circular inner flange 21' formed along the half line of the inside. The flange 21' is to support the edge portions of the oscillation rings 7' and 7". In this case, one oscillation ring 7" is interposed between the disk portion of the core and the flat ring-shaped permanent magnet 19, and the other 7' between the permanent magnet 19 and the flat ring-shaped support ring 16, so that the oscillation body may be more firmly and resiliently hung by means of the two oscillation rings, whose peripheral portions are 2 ~4i~L 7 2 firmly fi~ed ~o the plastic frame 21. The peripheral portions of the two oscillation rings 7' and 7" are respectively interposed bet~een the ring-shaped end surfaces of the upper and lower parts9' and 5' of the casing and the upper and lower surfaces of the flange 21' of the frame 21.
The resilient membranous oscillation rings 7', 7" shown in Fig. 3 has a central opening 7b for receiving the projection 18 of the core, and a plurality of arcuate slits for increasing the flexibility oJ the oscillation rings. The material used to makethe oscillation rings may be a metal, nonferrous metal, syntheticresin, paper, or others to inherently maintain suitableresiliency.
As shown in Figs. 5 and 6, the cap 14 closing the central aperture 10 of the upper part 9' is shaped concave like a cup with the bottom having a plurality of holes 14" for passing the magnetic field lines of a small flat permanent magnet 20 that is attached to the inside of the bottom and may be shaped like a disk or ring with or without a plurality of holes. The upper end of the cap is provided with a flange 14' rested on the upperflange 11' of the one end of the tubular member 11. The side andbottom portions of the cap 14 are inserted in the tubular member.
Preferably, a resilient body 22 such as rubber may be attached to the insides of the upper and lower parts 9' and 5' of the casing so as to help the oscillation body oscillate moreresiliently.
g 2(~ 7~
There are shown in Figs. 8A, 8B, 8C and 8D musical sound reproducing systems respectively comprising a cushion, waistcoat,belt, and mattress equipped with the inventive body speakers, and an audio amplifier.
One of the methods for installing the body speakers in a cushion may be a process for integrally molding the cushion withthe body speaLers arranged in a pattern in a mold.
In operation of the body speakers, when the sound signals containing music generated by the audio amplifier is conducted into the solenoid coil of the oscillation body 16, 17, 18, 19, 2, 7', 7" in the casing, the oscillation body oscillates upwardsand downwards. The oscillation is caused by the interaction between variation of the magnetic field of the solenoid coil and the magnetic field of the permanent magnet 19. Consequently, the casing containing the oscillation body altogether oscillates according to variation of the intensity of the sound signals, so that the user of the cushion, waistcoat or belt containing the inventive body speakers vividly feels the rhythm of the music loaded on the sound signals through his body sensing the oscillation of the speakers.
Meanwhile, there exists always a mutual attraction between the thin magnetic disk 20 and the upper surface of thecylindrical projection 18 due to their magnetic fields, which helps the oscillation of the oscillation body 16, 17, 18, 19, 2, 7', 7" when the solenoid coil conducts currents.
2~6~72 The inventive body sPeakers more effectively oscillate in response to the sound signals loaded with music mostly containing medium or low tones. Hence, when listening to music reproduced by a stereo sound system comprising the inventive body speakers, only the medium and low tone signals of the music may be conducted into the body speakers so as to cause the bodyspeakers to more effectively oscillate.
If the players of a jazz or popular music band composed of electric guitars, electronic organ, drum, etc. put on a waistcoat or belt equipped with the inventive body speakers, they may moreeffectively play music, fullY absorbed therein, because theybodily sense the rhythm of the music that they tangibly feel through the body speakers.
Of course, it is preferable that the inventive body speakers are arranged to be in the part parts of a waistcoat or belt that are positioned in the back of the user.
Particularly, if the inventive body speakers are suitably arranged in a back cushion of a seat of a vehicle, and connected with the audio amplifier of a stereo sound system of the vehicle, there is obtained a very effective musical sound reproducing system of the vehicle.
Naturally, the inventive body sense speakers may not only be used in all kinds of cushions or pads which are installed in the seats or beds arranged in a hotel, hosPital, ship, airplane, theater, cafe, music hall, electronic game room, etc for sitting, reclining, or supporting the head of a person1 but also suitably arranged in the floor of a dance hall in order to let the dancing persons bodily feel the rhythms of dance music transmitted through their soles.
Additionally, the body sense speakers may be installed in footwear.
, . --
Claims (30)
1. A body speaker, comprising:
a casing having an upper part and a lower part, said upper part having a central circular aperture;
a tubular member fixed around the central circular aperture of said upper part;
a solenoid coil wound around said tubular member, for providing a magnetic field by conducting an electrical current;
a cap positioned to close said central circular aperture of said upper part, said cap comprising a first member having a concave shape with a bottom surface having a plurality of holes for enabling passage of lines of the magnetic field, a flange formed on an upper end of the cap and disposed to rest upon said tubular member, and an exterior circumferential surface portion being inserted into said tubular member;
a magnetic disk centrally attached on the inside and on the bottom surface of said cap;
oscillation means for oscillating in response to variation of the magnetic field of said solenoid coil, said oscillation means comprising a core comprised of a second disk and a cylindrical projection formed centrally and integrally with said second disk, a flat ring-shaped permanent magnet fixed around said cylindrical projection, a flat ring-shaped support ring concentrically fixed on said permanent magnet, and a resilient membranous oscillation ring disposed around said oscillation means;
outer edge portions of said oscillation ring being fixed along an inside wall of said casing; and a lower end portion of said tubular member bearing said solenoid coil being loosely inserted into a gap between the side wall of said cylindrical projection of said core and inside surfaces of said permanent magnet and support ring;
wherein other gaps are formed between upper and lower surfaces of said oscillation means and inside surfaces of the upper and lower part of said casing when said oscillation means is fixed on the inside wall of said casing by means of said oscillation ring, so that said oscillation means may freely oscillate upward and downward in response to variation of the magnetic field provided by said solenoid coil conducting the electrical current.
a casing having an upper part and a lower part, said upper part having a central circular aperture;
a tubular member fixed around the central circular aperture of said upper part;
a solenoid coil wound around said tubular member, for providing a magnetic field by conducting an electrical current;
a cap positioned to close said central circular aperture of said upper part, said cap comprising a first member having a concave shape with a bottom surface having a plurality of holes for enabling passage of lines of the magnetic field, a flange formed on an upper end of the cap and disposed to rest upon said tubular member, and an exterior circumferential surface portion being inserted into said tubular member;
a magnetic disk centrally attached on the inside and on the bottom surface of said cap;
oscillation means for oscillating in response to variation of the magnetic field of said solenoid coil, said oscillation means comprising a core comprised of a second disk and a cylindrical projection formed centrally and integrally with said second disk, a flat ring-shaped permanent magnet fixed around said cylindrical projection, a flat ring-shaped support ring concentrically fixed on said permanent magnet, and a resilient membranous oscillation ring disposed around said oscillation means;
outer edge portions of said oscillation ring being fixed along an inside wall of said casing; and a lower end portion of said tubular member bearing said solenoid coil being loosely inserted into a gap between the side wall of said cylindrical projection of said core and inside surfaces of said permanent magnet and support ring;
wherein other gaps are formed between upper and lower surfaces of said oscillation means and inside surfaces of the upper and lower part of said casing when said oscillation means is fixed on the inside wall of said casing by means of said oscillation ring, so that said oscillation means may freely oscillate upward and downward in response to variation of the magnetic field provided by said solenoid coil conducting the electrical current.
2. A body speaker as claimed in claim 1, wherein:
one end of said tubular member has a flange formed perpendicularly to the side surface of said tubular member, so that said flange may be supported by peripheral portions of the central circular aperture of the upper part of the casing, and an opposite end of said tubular member has a short flange located to maintain the solenoid coil wound around the tubular member.
one end of said tubular member has a flange formed perpendicularly to the side surface of said tubular member, so that said flange may be supported by peripheral portions of the central circular aperture of the upper part of the casing, and an opposite end of said tubular member has a short flange located to maintain the solenoid coil wound around the tubular member.
3. A body speaker as claimed in claim 2, wherein:
said casing further comprises a frame disposed between said upper part and said lower part, and said oscillation means is further comprised of a plurality of said resilient membranous oscillation rings, a first one of said oscillation rings being interposed between said second disk and said flat ring-shaped permanent magnet, and a second one of said oscillation rings being interposed between said permanent magnet and said flat ring-shaped support ring, whereby said oscillation means is hung on said frame via said first one of said oscillation rings and said second one of said oscillation rings.
said casing further comprises a frame disposed between said upper part and said lower part, and said oscillation means is further comprised of a plurality of said resilient membranous oscillation rings, a first one of said oscillation rings being interposed between said second disk and said flat ring-shaped permanent magnet, and a second one of said oscillation rings being interposed between said permanent magnet and said flat ring-shaped support ring, whereby said oscillation means is hung on said frame via said first one of said oscillation rings and said second one of said oscillation rings.
4. A body speaker as claimed in claim 2, further comprised of a plurality of bodies of resilient material attached to said inside surfaces of said upper and lower parts of the casing for helping said oscillation means oscillate more resiliently in response to said variation of the magnetic field.
5. A body speaker as claimed in claim 1, wherein said casing comprises:
said upper part, said lower part, and a plastic frame supporting said upper and lower parts, said upper and lower parts being made of a metal.
said upper part, said lower part, and a plastic frame supporting said upper and lower parts, said upper and lower parts being made of a metal.
6. A body speaker as claimed in claim 5, wherein said oscillation means is further comprised of:
a plurality of said resilient membranous oscillation rings, a first one of said oscillation rings being interposed between said second disk and said flat ring-shaped permanent magnet, and a second one of said oscillation rings being interposed between said permanent magnet and said flat ring-shaped support ring, whereby said oscillation means is hung on said frame via said first one of said oscillation rings and said second one of said oscillation rings.
a plurality of said resilient membranous oscillation rings, a first one of said oscillation rings being interposed between said second disk and said flat ring-shaped permanent magnet, and a second one of said oscillation rings being interposed between said permanent magnet and said flat ring-shaped support ring, whereby said oscillation means is hung on said frame via said first one of said oscillation rings and said second one of said oscillation rings.
7. A body speaker as claimed in claim 1, wherein said tubular member and said solenoid coil move freely between the inside surfaces of the support ring and the permanent magnet and the side wall of the cylindrical projection of said oscillation means.
8. A body speaker as claimed in claim 7, wherein said magnetic disk is ring-shaped and perforated by a plurality of holes.
9. A body speaker as claimed in claim 1, wherein:
said casing further comprises a frame disposed between said upper part and said lower part, and said oscillation means is further comprised of a plurality of said resilient membranous oscillation rings, a first one of said oscillation ring being interposed between said second disk and said flat ring-shaped permanent magnet, and a second one of said oscillation rings being interposed between said permanent magnet and said flat ring-shaped support ring, whereby said oscillation means is hung on said frame via said first one of said oscillation rings and said second one of said oscillation rings.
said casing further comprises a frame disposed between said upper part and said lower part, and said oscillation means is further comprised of a plurality of said resilient membranous oscillation rings, a first one of said oscillation ring being interposed between said second disk and said flat ring-shaped permanent magnet, and a second one of said oscillation rings being interposed between said permanent magnet and said flat ring-shaped support ring, whereby said oscillation means is hung on said frame via said first one of said oscillation rings and said second one of said oscillation rings.
10. A body speaker as claimed in claim 1, further comprised of a plurality of bodies of resilient material attached to said inside surfaces of said upper and lower parts of the casing for helping said oscillation means more resiliently in response to said variation of the magnetic field.
11. A body speaker as claimed in claim 1, further comprised of a resin and adhesive attaching an inner edge of said oscillation ring to said support ring.
12. A body speaker as claimed in claim 1, wherein said oscillation ring comprises:
a plurality of inner lugs integrally formed along the inner edge of said oscillation ring, said plurality of inner lugs connecting being interposed between said permanent magnet and said support ring.
a plurality of inner lugs integrally formed along the inner edge of said oscillation ring, said plurality of inner lugs connecting being interposed between said permanent magnet and said support ring.
13. A body speaker as claimed in claim 1, further comprised of:
a synthetic resin laid on the outer edge of said oscillation ring, synthetic resin being interposed between the end surfaces of said upper and lower parts, whereby said oscillation ring is fixed to the inside wall of said casing by said synthetic resin.
a synthetic resin laid on the outer edge of said oscillation ring, synthetic resin being interposed between the end surfaces of said upper and lower parts, whereby said oscillation ring is fixed to the inside wall of said casing by said synthetic resin.
14. A body speaker as claimed in claim 1, wherein:
said oscillation ring comprises a plurality of outer lugs integrally formed with said oscillation ring, an upper end of said lower part of said casing contains a plurality of grooves corresponding to said plurality of outer lugs, and the lower end of said upper part holds said lugs against the bottom of said grooves.
said oscillation ring comprises a plurality of outer lugs integrally formed with said oscillation ring, an upper end of said lower part of said casing contains a plurality of grooves corresponding to said plurality of outer lugs, and the lower end of said upper part holds said lugs against the bottom of said grooves.
15. A musical sound reproducing system of a room, comprising:
an audio amplifier;
a plurality of the body speakers as claimed in claim 1, and a cushion of a chair equipped with said plurality of body speakers, said body speakers being arranged in a pattern within said cushion, said plurality of body speakers being electrically connected to receive audio signals from said audio amplifier, whereby said plurality of body speakers rhythmically oscillate in response to variation of the magnetic field of the solenoid coil conducting said audio signals from said audio amplifier.
an audio amplifier;
a plurality of the body speakers as claimed in claim 1, and a cushion of a chair equipped with said plurality of body speakers, said body speakers being arranged in a pattern within said cushion, said plurality of body speakers being electrically connected to receive audio signals from said audio amplifier, whereby said plurality of body speakers rhythmically oscillate in response to variation of the magnetic field of the solenoid coil conducting said audio signals from said audio amplifier.
16. A dance hall, comprising:
an audio amplifier, a plurality of the body speakers as claimed in claim 1, and a floor equipped with said plurality of body speakers, said body speakers being arranged in a pattern in said floor, said plurality of body speakers being electrically connected with said audio amplifier to receive from said audio amplifier audio signals representative of dance music played in the dance hall, whereby said plurality of body speakers rhythmically oscillate in response to variation of the magnetic field of the solenoid coil conducting said audio signals from said audio amplifier and thereby enable persons dancing upon said floor bodily feel the rhythms of said dance music transmitted through their soles.
an audio amplifier, a plurality of the body speakers as claimed in claim 1, and a floor equipped with said plurality of body speakers, said body speakers being arranged in a pattern in said floor, said plurality of body speakers being electrically connected with said audio amplifier to receive from said audio amplifier audio signals representative of dance music played in the dance hall, whereby said plurality of body speakers rhythmically oscillate in response to variation of the magnetic field of the solenoid coil conducting said audio signals from said audio amplifier and thereby enable persons dancing upon said floor bodily feel the rhythms of said dance music transmitted through their soles.
17. A waistcoat, comprising:
a plurality of the body speakers as claimed in claim 1, and a pad equipped with said plurality of body speakers, said body speakers being arranged in a pattern within said pad, said plurality of body speakers being connectable to receive audio signals from an audio amplifier, whereby said plurality of body speakers rhythmically oscillate within said pad in response to variation of the magnetic field of the solenoid coil conducting said audio signals received from said audio amplifier.
a plurality of the body speakers as claimed in claim 1, and a pad equipped with said plurality of body speakers, said body speakers being arranged in a pattern within said pad, said plurality of body speakers being connectable to receive audio signals from an audio amplifier, whereby said plurality of body speakers rhythmically oscillate within said pad in response to variation of the magnetic field of the solenoid coil conducting said audio signals received from said audio amplifier.
18. A belt, comprising:
a plurality of the body speakers as claimed in claim 1, and a pad equipped with said plurality of body speakers, said body speakers being arranged in a pattern within said pad, said plurality of body speakers being connectable to receive audio signals from an audio amplifier, whereby said plurality of body speakers rhythmically oscillate within said pad in response to variation of the magnetic field of the solenoid coil conducting said audio signals received from said audio amplifier.
a plurality of the body speakers as claimed in claim 1, and a pad equipped with said plurality of body speakers, said body speakers being arranged in a pattern within said pad, said plurality of body speakers being connectable to receive audio signals from an audio amplifier, whereby said plurality of body speakers rhythmically oscillate within said pad in response to variation of the magnetic field of the solenoid coil conducting said audio signals received from said audio amplifier.
19. A mattress, comprising:
a plurality of the body speakers as claimed in claim 1, and a pad equipped with said plurality of body speakers, said body speakers being arranged in a pattern within said pad, said body speakers being connectable to receive audio signals from an audio amplifier, whereby said body speakers rhythmically oscillate in response to variation of the magnetic field of the solenoid coil conducting said audio signals from said audio amplifier.
a plurality of the body speakers as claimed in claim 1, and a pad equipped with said plurality of body speakers, said body speakers being arranged in a pattern within said pad, said body speakers being connectable to receive audio signals from an audio amplifier, whereby said body speakers rhythmically oscillate in response to variation of the magnetic field of the solenoid coil conducting said audio signals from said audio amplifier.
20. A cushion or pillow, comprising:
a plurality of the body speakers as claimed in claim 1, and a pad equipped with said plurality of body speakers, said body speakers being arranged in a pattern within said pad, said body speakers being connectable to received audio signals from an audio amplifier, whereby said body speakers rhythmically oscillate in response to variation of the magnetic field of the solenoid coil conducting said audio signals from said audio amplifier.
a plurality of the body speakers as claimed in claim 1, and a pad equipped with said plurality of body speakers, said body speakers being arranged in a pattern within said pad, said body speakers being connectable to received audio signals from an audio amplifier, whereby said body speakers rhythmically oscillate in response to variation of the magnetic field of the solenoid coil conducting said audio signals from said audio amplifier.
21. Footwear comprising:
a plurality of the body speakers as claimed in claim 1, and a pad equipped with said plurality of body speakers, said body speakers being arranged in a pattern within said pad, said body speakers being connectable to receive audio signals from an audio amplifier, whereby said body speakers rhythmically oscillate in response to variation of the magnetic field of the solenoid coil conducting said audio signals from said audio amplifier.
a plurality of the body speakers as claimed in claim 1, and a pad equipped with said plurality of body speakers, said body speakers being arranged in a pattern within said pad, said body speakers being connectable to receive audio signals from an audio amplifier, whereby said body speakers rhythmically oscillate in response to variation of the magnetic field of the solenoid coil conducting said audio signals from said audio amplifier.
22. A bodily sensing musical sound system, comprising:
a stereo sound system, means for providing medium and low frequency signals from the output of said stereo sound system, an amplifier for providing amplified signals by amplifying the medium and low frequency signals, and a cushion equipped with a plurality of the body speakers as claimed in claim 1, coupled to receive the amplified signals from said amplifier, said body speakers being arranged spaced-apart within a pattern in said cushion.
a stereo sound system, means for providing medium and low frequency signals from the output of said stereo sound system, an amplifier for providing amplified signals by amplifying the medium and low frequency signals, and a cushion equipped with a plurality of the body speakers as claimed in claim 1, coupled to receive the amplified signals from said amplifier, said body speakers being arranged spaced-apart within a pattern in said cushion.
23. A body sound speaker as claimed in claim 1, wherein said magnetic disk is ring-shaped and perforated by a plurality of holes.
24. A body speaker, comprising:
a casing having an upper part, a lower part and a frame disposed between said upper part and said lower part, said upper part having a central circular aperture;
a tubular member fixed around the central circular aperture of said upper part;
a solenoid coil wound around said tubular member, for providing a magnetic field by conducting an electrical current;
a cap positioned to close said central circular aperture of said upper part, said cap having a bottom surface perforated by a plurality of holes for enabling passage of lines of magnetic field, a flange formed on an upper end of the cap and disposed to rest upon said tubular member, and an exterior circumferential surface portion being inserted into said tubular member;
a first disk centrally attached on the inside and on the bottom surface of said cap;
oscillation means attached to said frame of said casing, for oscillating in response to variation of the magnetic field of said solenoid coil, said oscillation means comprising a core comprised of a second disk and a cylindrical projection formed centrally and integrally with said second disk, a flat ring-shaped permanent magnet fixed around said cylindrical projection, a flat ring-shaped support ring concentrically fixed on said flat ring-shaped permanent magnet, and a resilient membranous oscillation ring disposed around said oscillation means, said resilient membranous oscillation ring having outer edge portions being attached to said frame of said casing to enable said oscillation means to oscillate upward and downward in response to variation of the magnetic field provided by said solenoid coil conducting the electrical current; and a lower end portion of said tubular member bearing said solenoid coil being loosely inserted into a gap between the side wall of said cylindrical projection of said core and inside surfaces of said flat ring-shaped permanent magnet and flat ring-shaped support ring.
a casing having an upper part, a lower part and a frame disposed between said upper part and said lower part, said upper part having a central circular aperture;
a tubular member fixed around the central circular aperture of said upper part;
a solenoid coil wound around said tubular member, for providing a magnetic field by conducting an electrical current;
a cap positioned to close said central circular aperture of said upper part, said cap having a bottom surface perforated by a plurality of holes for enabling passage of lines of magnetic field, a flange formed on an upper end of the cap and disposed to rest upon said tubular member, and an exterior circumferential surface portion being inserted into said tubular member;
a first disk centrally attached on the inside and on the bottom surface of said cap;
oscillation means attached to said frame of said casing, for oscillating in response to variation of the magnetic field of said solenoid coil, said oscillation means comprising a core comprised of a second disk and a cylindrical projection formed centrally and integrally with said second disk, a flat ring-shaped permanent magnet fixed around said cylindrical projection, a flat ring-shaped support ring concentrically fixed on said flat ring-shaped permanent magnet, and a resilient membranous oscillation ring disposed around said oscillation means, said resilient membranous oscillation ring having outer edge portions being attached to said frame of said casing to enable said oscillation means to oscillate upward and downward in response to variation of the magnetic field provided by said solenoid coil conducting the electrical current; and a lower end portion of said tubular member bearing said solenoid coil being loosely inserted into a gap between the side wall of said cylindrical projection of said core and inside surfaces of said flat ring-shaped permanent magnet and flat ring-shaped support ring.
25. The body speaker as claimed in claim 24, wherein said tubular member has a flange formed at one end perpendicular to a side surface of said tubular member, and said solenoid coil is wounded around said flange to provide said magnetic field.
26. The body speaker as claimed in claim 24, wherein said oscillation ring comprises a plurality of inner lugs integrally formed along the inner edge of said oscillation ring, said plurality of inner lugs being interposed between said flat ring-shaped permanent magnet and said flat ring-shaped support ring.
27. The body speaker as claimed in claim 24, wherein said first disk is a magnetic disk having a ring-shaped and is perforated by a plurality of holes.
28. A body speaker, comprising:
a housing having an upper part, a lower part and a frame disposed between said upper part and said lower part, said upper part having a central circular aperture;
a tubular member fixed around the central circular aperture of said upper part;
a solenoid coil wound around said tubular member, for providing a magnetic field by conducting an electrical current;
a cap positioned to close said central circular aperture of said upper part, said cap having with a bottom surface perforated by a plurality of holes for enabling passage of lines of magnetic field, a flange formed on an upper end of the cap and disposed to rest upon said tubular member, and an exterior circumferential surface portion being inserted into said tubular member;
oscillation means attached to said frame of said housing for oscillating in response to variation of the magnetic field of said solenoid coil, said oscillation means comprising:
a core comprised of a disk and a cylindrical projection formed centrally and integrally with said disk;
a flat ring-shaped permanent magnet fixed around said cylindrical projection;
a flat ring-shaped support ring concentrically fixed on said flat ring-shaped permanent magnet;
a first resilient membranous oscillation ring disposed between said disk and said flat ring-shaped permanent magnet; and a second resilient membranous oscillation ring disposed between said flat ring-shaped permanent magnet and said flat ring-shaped support ring, said first and second resilient membranous oscillation rings having outer edge portions being attached to said frame of said housing to enable said oscillation means to oscillate in response to variation of the magnetic field provided by said solenoid coil conducting the electrical current;
a lower end portion of said tubular member bearing said solenoid coil being loosely inserted into a gap between the side wall of said cylindrical projection of said core and inside surfaces of said flat ring-shaped permanent magnet and flat ring-shaped support ring.
a housing having an upper part, a lower part and a frame disposed between said upper part and said lower part, said upper part having a central circular aperture;
a tubular member fixed around the central circular aperture of said upper part;
a solenoid coil wound around said tubular member, for providing a magnetic field by conducting an electrical current;
a cap positioned to close said central circular aperture of said upper part, said cap having with a bottom surface perforated by a plurality of holes for enabling passage of lines of magnetic field, a flange formed on an upper end of the cap and disposed to rest upon said tubular member, and an exterior circumferential surface portion being inserted into said tubular member;
oscillation means attached to said frame of said housing for oscillating in response to variation of the magnetic field of said solenoid coil, said oscillation means comprising:
a core comprised of a disk and a cylindrical projection formed centrally and integrally with said disk;
a flat ring-shaped permanent magnet fixed around said cylindrical projection;
a flat ring-shaped support ring concentrically fixed on said flat ring-shaped permanent magnet;
a first resilient membranous oscillation ring disposed between said disk and said flat ring-shaped permanent magnet; and a second resilient membranous oscillation ring disposed between said flat ring-shaped permanent magnet and said flat ring-shaped support ring, said first and second resilient membranous oscillation rings having outer edge portions being attached to said frame of said housing to enable said oscillation means to oscillate in response to variation of the magnetic field provided by said solenoid coil conducting the electrical current;
a lower end portion of said tubular member bearing said solenoid coil being loosely inserted into a gap between the side wall of said cylindrical projection of said core and inside surfaces of said flat ring-shaped permanent magnet and flat ring-shaped support ring.
29. The body speaker as claimed in claim 28, wherein said tubular member comprises a first portion having a first diameter positioned around the central circular aperture of the upper part of said housing, and a second portion continuously extending from said first portion and having a second diameter greater than said first diameter fixed around said cylindrical projection of said core, and said solenoid coil being wounded around said second portion surrounding said cylindrical projection to provide said magnetic field.
30. The body speaker as claimed in claim 28, wherein said second resilient membranous oscillation ring comprises a plurality of inner lugs integrally formed along the inner edge, said plurality of inner lugs being interposed between said flat ring-shaped permanent magnet and said flat ring-shaped support ring.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CA 2060172 CA2060172C (en) | 1992-01-28 | 1992-01-28 | Body sense speaker |
TW81101594A TW200393B (en) | 1992-01-28 | 1992-03-02 | Body sense speaker |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CA 2060172 CA2060172C (en) | 1992-01-28 | 1992-01-28 | Body sense speaker |
Publications (2)
Publication Number | Publication Date |
---|---|
CA2060172A1 CA2060172A1 (en) | 1993-07-29 |
CA2060172C true CA2060172C (en) | 1995-03-21 |
Family
ID=4149171
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA 2060172 Expired - Fee Related CA2060172C (en) | 1992-01-28 | 1992-01-28 | Body sense speaker |
Country Status (2)
Country | Link |
---|---|
CA (1) | CA2060172C (en) |
TW (1) | TW200393B (en) |
-
1992
- 1992-01-28 CA CA 2060172 patent/CA2060172C/en not_active Expired - Fee Related
- 1992-03-02 TW TW81101594A patent/TW200393B/en active
Also Published As
Publication number | Publication date |
---|---|
CA2060172A1 (en) | 1993-07-29 |
TW200393B (en) | 1993-02-21 |
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Legal Events
Date | Code | Title | Description |
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EEER | Examination request | ||
MKLA | Lapsed |