JPS6119303Y2 - - Google Patents
Info
- Publication number
- JPS6119303Y2 JPS6119303Y2 JP12067480U JP12067480U JPS6119303Y2 JP S6119303 Y2 JPS6119303 Y2 JP S6119303Y2 JP 12067480 U JP12067480 U JP 12067480U JP 12067480 U JP12067480 U JP 12067480U JP S6119303 Y2 JPS6119303 Y2 JP S6119303Y2
- Authority
- JP
- Japan
- Prior art keywords
- inner cylinder
- supply pipe
- cylinder
- air supply
- burner
- 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
- 238000002485 combustion reaction Methods 0.000 claims description 20
- 239000000446 fuel Substances 0.000 claims description 16
- 230000002093 peripheral effect Effects 0.000 claims description 4
- 239000007789 gas Substances 0.000 description 11
- 239000011521 glass Substances 0.000 description 11
- 239000004744 fabric Substances 0.000 description 3
- 241000282326 Felis catus Species 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 239000011819 refractory material Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B5/00—Melting in furnaces; Furnaces so far as specially adapted for glass manufacture
- C03B5/16—Special features of the melting process; Auxiliary means specially adapted for glass-melting furnaces
- C03B5/235—Heating the glass
Description
【考案の詳細な説明】
本考案はバーナに関し、特にガラス連帯窯に好
適なバーナに関する。[Detailed Description of the Invention] The present invention relates to a burner, and particularly to a burner suitable for a glass joint kiln.
従来からのガラス連帯窯においては、円形炉床
の周方向に間隔をあけて配置されたねこつぼの中
央にバーナが配置されている。このようなガラス
連帯窯においてはガラス生地の泡切りおよび清澄
化のために各ねこつぼの下部を高温度にしてガラ
ス生地の対流を促進させることが好ましい。その
ため前記バーナは炉床中央における炉本体の頂部
に下向きに設けられており、そのバーナの燃焼排
ガスは各ねこつぼに対応して炉本体に形成された
排気口から排出される構造となつている。 In a conventional glass kiln, a burner is arranged in the center of a circular hearth that is spaced apart from each other in the circumferential direction. In such a glass kiln, it is preferable to heat the lower part of each pot to a high temperature to promote convection in the glass fabric in order to remove bubbles and clarify the glass fabric. Therefore, the burners are installed facing downward at the top of the furnace body in the center of the hearth, and the combustion exhaust gas from the burners is discharged from exhaust ports formed in the furnace body corresponding to each cat pot. .
第１図を参照して、従来からのガラス連帯窯に
用いられるバーナ１は、基本的には鉛直軸線を有
する内筒２と外筒３とを同心二重管状に配置して
成り、内筒２にはその半径方向に沿う空気供給管
４が接続される。燃料供給管５から供給される都
市ガスなどの気体燃料は、内筒２から噴出される
燃焼用空気と混合して燃焼する。ところが、この
ようなバーナ１では、空気供給管４から供給され
た燃焼用空気が、空気供給管４に対向する内筒２
の内面に衝突してて矢符６で示すごとく偏流しな
がら内筒２内を下方に流下する。そのため気体燃
料の燃焼によつて形成される火炎が、矢符７で示
すごとく偏心する。このような火炎の偏心が生じ
ると、複数のねこつぼが均等に加熱されないとい
う問題があつた。 Referring to FIG. 1, a burner 1 used in a conventional glass joint kiln basically consists of an inner tube 2 and an outer tube 3 arranged in a concentric double tube shape, each having a vertical axis. 2 is connected to an air supply pipe 4 extending in the radial direction thereof. Gaseous fuel such as city gas supplied from the fuel supply pipe 5 is mixed with combustion air ejected from the inner cylinder 2 and combusted. However, in such a burner 1, the combustion air supplied from the air supply pipe 4 flows through the inner cylinder 2 facing the air supply pipe 4.
The liquid collides with the inner surface of the inner cylinder 2 and flows downward in the inner cylinder 2 while drifting as shown by the arrow 6. Therefore, the flame formed by combustion of the gaseous fuel becomes eccentric as shown by arrow 7. When such eccentricity of the flame occurs, there is a problem in that the plurality of pots are not heated evenly.
本考案の目的は上述の技術的課題を解決し、火
炎の偏心を防止したバーナを提供することであ
る。 The purpose of the present invention is to solve the above-mentioned technical problems and provide a burner that prevents flame eccentricity.
本考案は、燃焼用空気を供給するための内筒と
気体燃料を供給するための外筒とを同心二重環状
に配置して構成されたバーナにおいて、前記内筒
の途中には内筒内周面との間に環状の間隙を形成
する円板状の偏流板が挿入され、前記内筒にはそ
の半径方向に沿つて空気供給管が接続され、前記
偏流板は空気供給管の接続位置よりも下流側に配
置され、しかも内筒の軸線に関して空気供給管寄
りの部分が内筒の軸線に沿つて空気供給管寄りに
あるように内筒の軸直角方向に対して傾斜され、
前記偏流板には、内筒と同心である支持棒が固着
され、
外筒には、内筒の下端部よりも上方で、半径方
向に沿つて燃料供給管が接続され、
内筒よりも下方で、外筒の下端部内周面には下
方になるにつれて小径となり、かつ中央には軸線
方向に一様な内径を有する孔が形成された火炎保
持部材が形成されることを特徴とするバーナであ
る。 The present invention provides a burner configured by arranging an inner cylinder for supplying combustion air and an outer cylinder for supplying gaseous fuel in a concentric double ring shape. A disc-shaped deflection plate is inserted to form an annular gap between the inner cylinder and the inner cylinder, and an air supply pipe is connected to the inner cylinder along the radial direction, and the deflection plate is connected to the connection position of the air supply pipe. and is inclined with respect to the direction perpendicular to the axis of the inner cylinder so that the part closer to the air supply pipe with respect to the axis of the inner cylinder is located closer to the air supply pipe along the axis of the inner cylinder,
A support rod that is concentric with the inner cylinder is fixed to the drift plate, and a fuel supply pipe is connected to the outer cylinder along the radial direction above the lower end of the inner cylinder, and below the inner cylinder. A burner characterized in that a flame holding member is formed on the inner circumferential surface of the lower end of the outer cylinder, the flame holding member having a hole that becomes smaller in diameter as it goes downward and has a uniform inner diameter in the axial direction in the center. be.
以下、図面によつて本考案の実施例を説明す
る。第２図は本考案の一実施例の縦断面図であ
り、第３図は第２図の切断面線−から見た断
面図である。ガラス連帯窯１１の炉本体１２にお
ける上部には円形炉床１３が形成されており、こ
の炉床１３には複数たとえば４個のねこつぼ１４
が周方向等間隔に配置される。各ねこつぼ１４の
開口部１４ａは、炉本体１２の側壁を貫通して外
部に開放されている。ガラス原料の導入および成
形のためのたね取り作業はガラス連帯窯１１の外
方から開口部１４ａを介して行なわれる。 Embodiments of the present invention will be described below with reference to the drawings. FIG. 2 is a longitudinal sectional view of one embodiment of the present invention, and FIG. 3 is a sectional view taken along the section line - in FIG. 2. A circular hearth 13 is formed in the upper part of the furnace body 12 of the glass joint kiln 11, and a plurality of, for example, four cat pots 14 are placed in this hearth 13.
are arranged at equal intervals in the circumferential direction. The opening 14a of each pot 14 penetrates the side wall of the furnace body 12 and is open to the outside. Introducing the glass raw materials and removing the seeds for forming are performed from outside the glass kiln 11 through the opening 14a.
炉本体１２の中央頂部には、各ねこつぼ１４の
中央部において下向きにバーナ１６が設けられ
る。このバーナ１６によつて形成される火炎１７
は、火炎衝突板１８に衝突して放射状に拡散さ
れ、それによつて各ねこつぼ１４内のガラス生地
が溶解される。炉本体１２には各ねこつぼ１４に
対応して排気口１９がそれぞれ形成されており、
排気口１９からこれぞれ排出される排ガスは煙道
２０を介して誘引排出される。なお炉本体１２の
中央下部には燃焼灰の灰溜まり２１が形成されて
いる。 At the center top of the furnace body 12, a burner 16 is provided facing downward at the center of each pot 14. Flame 17 formed by this burner 16
The flame impinges on the flame impingement plate 18 and is spread radially, thereby melting the glass fabric inside each pot 14. Exhaust ports 19 are formed in the furnace body 12 in correspondence with each pot 14, respectively.
The exhaust gases discharged from the exhaust ports 19 are induced to be discharged through the flue 20. Note that an ash pool 21 for combustion ash is formed at the lower center of the furnace body 12.
第４図はバーナ１６の拡大縦断面図であり、第
５図は第４図の切断面線−から見た断面図で
ある。バーナ１６は、基本的には、鉛直軸線を有
する内筒２２と、内筒２２の外面との間に環状の
ガス通路２３を形成する外筒２４とを同心二重管
状に配置して成る。ガス通路２３を経て供給され
る気体燃料たとえば都市ガスは、内筒２２から噴
出される燃焼用空気として混合して燃焼し、それ
によつて下向きの火炎１７（第２図参照）が形成
される。 FIG. 4 is an enlarged vertical sectional view of the burner 16, and FIG. 5 is a sectional view taken along the section line - in FIG. 4. The burner 16 basically consists of an inner cylinder 22 having a vertical axis and an outer cylinder 24 forming an annular gas passage 23 between the outer surface of the inner cylinder 22 and arranged in a concentric double tube shape. Gaseous fuel, such as city gas, supplied through the gas passage 23 is mixed and combusted as combustion air ejected from the inner cylinder 22, thereby forming a downward flame 17 (see FIG. 2).
外筒２４の上端部は端板２５で閉塞される。内
筒２２の上端部は前記端板２５を貫通して上方に
延び端板２６によつて閉塞される。内筒２２の下
端部は外筒２４の下端部よりも上方に位置されて
いる。また内筒２２の内周面には耐火物２７が内
張りされる。外筒２４の下端部内周面には、耐火
物２８が内張りされ、それによつて外筒２４の内
径よりも小径の火炎保持部２９が形成される。こ
の火炎保持部２９において、ガス通路２３から供
給される気体燃料と内筒２２から噴出される燃焼
用空気とが混合し、それによつて良好な燃焼状態
を得ることができる。火炎保持部材２９には、下
方になるにつれて小径となり、かつ中央には軸線
方向に一様な内径を有する孔が形成されている。
外筒３には、内筒２の下端部よりも上方で、半径
方向に沿つて燃料供給管５が接続される。 The upper end of the outer cylinder 24 is closed with an end plate 25. The upper end of the inner cylinder 22 extends upward through the end plate 25 and is closed by an end plate 26. The lower end of the inner cylinder 22 is located higher than the lower end of the outer cylinder 24. Further, the inner peripheral surface of the inner cylinder 22 is lined with a refractory material 27 . The inner circumferential surface of the lower end of the outer cylinder 24 is lined with a refractory material 28, thereby forming a flame holding part 29 having a smaller diameter than the inner diameter of the outer cylinder 24. In this flame holding portion 29, the gaseous fuel supplied from the gas passage 23 and the combustion air jetted from the inner cylinder 22 mix, thereby achieving a good combustion state. The flame holding member 29 has a hole formed in the center that becomes smaller in diameter toward the bottom and has an inner diameter that is uniform in the axial direction.
A fuel supply pipe 5 is connected to the outer cylinder 3 above the lower end of the inner cylinder 2 along the radial direction.
内筒２２の上部および外筒２３の上部には、そ
れらの半径方向に沿う軸線を有する空気供給管３
０および燃料供給管３１がそれぞれ接続される。
空気供給管３０はブロアなどの図示しない空気供
給源に接続され、また燃料供給管３１はたとえば
都市ガス供給源（図示せず）に接続される。 At the upper part of the inner cylinder 22 and the upper part of the outer cylinder 23, an air supply pipe 3 having an axis along the radial direction thereof is provided.
0 and a fuel supply pipe 31 are connected to each other.
The air supply pipe 30 is connected to an air supply source (not shown) such as a blower, and the fuel supply pipe 31 is connected to, for example, a city gas supply source (not shown).
本考案に従えば、内筒２２の空気供給管３１の
接続位置よりも下流側には、耐火物２７を内張り
された内筒２２の内周面との間に環状の間隙３２
を形成する円板状の偏流板３３が挿入される。こ
の偏流板３３は、内筒２２の軸直角方向対して傾
斜されている。その傾斜方向は、偏流板３３にお
ける内筒２２の軸線に関して空気供給管３０寄り
の部分３３ａが、内筒２２の軸線に沿つて空気供
給管３０寄りに位置するように選ばれる。 According to the present invention, on the downstream side of the connection position of the air supply pipe 31 of the inner cylinder 22, there is an annular gap 32 between the inner circumferential surface of the inner cylinder 22 lined with the refractory 27.
A disc-shaped drifting plate 33 forming a disc is inserted. This drifting plate 33 is inclined with respect to the direction perpendicular to the axis of the inner cylinder 22. The direction of inclination is selected such that a portion 33a of the deflection plate 33 closer to the air supply pipe 30 with respect to the axis of the inner cylinder 22 is located closer to the air supply pipe 30 along the axis of the inner cylinder 22.
偏流板３３には、内筒２２と同心の支持棒３４
の下端部が固着される。支持棒３４の上端部は端
板２６を貫通して上方に延設される。端板２６の
中央部外面にはナツト３５が固着されており、支
持棒３４の途中はナツト３５に螺合される。した
がつて支持棒３４および偏流板３３は鉛直軸線ま
わりに回転自在である。ナツト３５の上方に隣接
して支持棒３４の途中には止めナツト３６が螺合
され、この止めナツト３６を設けることによつて
支持棒３４および偏流板３３の回転位置を固定す
ることができる。 The drift plate 33 has a support rod 34 concentric with the inner cylinder 22.
The lower end of is fixed. The upper end of the support rod 34 passes through the end plate 26 and extends upward. A nut 35 is fixed to the outer surface of the central portion of the end plate 26, and the support rod 34 is screwed into the nut 35 in the middle. Therefore, the support rod 34 and the drift plate 33 are rotatable around the vertical axis. A locking nut 36 is screwed into the support rod 34 above and adjacent to the nut 35, and by providing the locking nut 36, the rotational positions of the support rod 34 and the deflection plate 33 can be fixed.
このように構成されたバーナ１６において、空
気供給管３０から供給された燃焼用空気は、空気
供給管３０に対向する内筒２２の内面に衝突して
矢符３７で示すごとく偏流しながら内筒２２内を
流下する。偏流しながら内筒２２内を流下してき
た燃焼用空気が偏流板３３の位置に至ると、偏流
板３３に衝突して流れが乱される。そして偏流板
３３と内筒２２の内周面との間の間隙を矢符３８
示すごとく円周方向にほぼ均等に流過することに
よつて、燃焼用空気の偏流が直進流に強制的に変
化される。そのため、偏流板３３を流過した後に
おいて、燃焼用空気は内筒２２内を直進し、した
がつてガス通路２３から供給される気体燃料の燃
焼によつて形成される火炎はほぼ鉛直下向きとな
る。 In the burner 16 configured in this manner, the combustion air supplied from the air supply pipe 30 collides with the inner surface of the inner cylinder 22 facing the air supply pipe 30 and flows unevenly as shown by the arrow 37 into the inner cylinder. It flows down within 22. When the combustion air that has flowed down inside the inner cylinder 22 while being deflected reaches the position of the deflection plate 33, it collides with the deflection plate 33 and the flow is disturbed. The gap between the deflection plate 33 and the inner peripheral surface of the inner cylinder 22 is indicated by the arrow 38.
As shown, by flowing almost uniformly in the circumferential direction, the biased flow of the combustion air is forcibly changed to a straight flow. Therefore, after passing through the deflection plate 33, the combustion air moves straight inside the inner cylinder 22, and therefore the flame formed by the combustion of the gaseous fuel supplied from the gas passage 23 is directed almost vertically downward. Become.
連帯窯１１の各排気口１９における排ガス吸引
力が経年的に変化してバーナ１６からの火炎１７
が偏心するような場合には、止めナツト３６を緩
めて支持棒３４および偏流板３３の回転位置を調
節することがべし、したがつて火炎の方向を確認
しながら火炎が偏心しないように調節することが
できる。 The exhaust gas suction force at each exhaust port 19 of the joint kiln 11 changes over time, causing the flame 17 from the burner 16 to
If the flame is eccentric, it is necessary to loosen the locking nut 36 and adjust the rotational position of the support rod 34 and drift plate 33. Therefore, while checking the direction of the flame, adjust so that the flame is not eccentric. be able to.
本考案は上述の実施例のガラス連帯窯だけでな
く、加熱炉などに関連して広く実施することがで
きる。 The present invention can be widely implemented not only in the glass joint kiln of the above-mentioned embodiment, but also in connection with heating furnaces and the like.
上述のごとく本考案によれば、内筒鉄の途中
に、内筒内周面との間に環状の間隙を形成する円
板状の偏流板が挿入されるので、内筒内を偏流し
ながら流過してきた燃焼用空気が偏流板によつて
直進流に変換される。したがつて本件バーナによ
れば、火炎が偏心することを防止することができ
る。 As described above, according to the present invention, a disk-shaped drifting plate that forms an annular gap with the inner circumferential surface of the inner cylinder is inserted in the middle of the inner cylinder iron, so that the current flows inside the inner cylinder while drifting. The combustion air that has passed is converted into a straight flow by the deflector plate. Therefore, according to the present burner, it is possible to prevent the flame from becoming eccentric.
また本考案では、偏流板は空気供給管の接続位
置よりも下流側に配置され、しかも内筒の軸線に
関して空気供給管寄りの部分が内筒の軸線に沿つ
て空気供給管寄り（すなわち第４図の上方）にあ
るように、内筒の軸直角方向に対して傾斜されて
いるので、偏流板と内筒の内周面との間の間隙
を、燃焼用空気が円周方向にほぼ均等に流過する
ことが可能となる。これによつて燃焼用空気の偏
流が直進流に強制的亭に変化される。 In addition, in the present invention, the deflection plate is arranged downstream of the connection position of the air supply pipe, and the part closer to the air supply pipe with respect to the axis of the inner cylinder is located closer to the air supply pipe along the axis of the inner cylinder (i.e., the fourth As shown in the upper part of the figure, the combustion air is slanted with respect to the direction perpendicular to the axis of the inner cylinder, so that the gap between the drift plate and the inner circumferential surface of the inner cylinder is almost evenly distributed in the circumferential direction. It becomes possible for the water to flow through. As a result, the drift of the combustion air is changed into a forced straight flow.
また、燃料供給管は内筒の下端部よりも上方で
半径方向に沿つて接続され、このことによつて内
筒からの燃焼用空気の直進をガス燃料によつて妨
げることが防がれる。 Further, the fuel supply pipe is connected along the radial direction above the lower end of the inner cylinder, thereby preventing the gas fuel from interfering with the combustion air going straight from the inner cylinder.
偏流板は、内筒と同心である支持棒が固着され
て支持されるので、偏流板と内筒の内周面との間
の間隙を流れる燃焼用空気を、一層、均等に流過
させることが可能になる。 The drifting plate is supported by a support rod that is fixed and concentric with the inner cylinder, so that the combustion air flowing through the gap between the drifting plate and the inner peripheral surface of the inner cylinder can flow more evenly. becomes possible.
さらにまた、火炎保持部２９は、内筒よりも下
方になるにつれて小径となり、かつ中央には軸線
方向に一様な内径を有する孔が形成されているの
で、火炎を一直線にすることが確実になる。 Furthermore, the flame retaining part 29 becomes smaller in diameter as it goes lower than the inner cylinder, and a hole having a uniform inner diameter in the axial direction is formed in the center, so that the flame can be reliably kept in a straight line. Become.
第１図は従来からのバーナを示す断面図、第２
図は本考案の一実施例の縦断面図、第３図は第２
図の切断面線−から見た断面図、第４図は第
２図のバーナ１６の拡大縦断面図、第５図は第４
図の切断面線−から見た断面図である。
１６……バーナ、２２……内筒、２４……外
筒、３０……空気供給管、３２……通路、３３…
…偏流板、３４……支持棒。
Figure 1 is a sectional view showing a conventional burner, Figure 2 is a sectional view showing a conventional burner.
The figure is a longitudinal sectional view of one embodiment of the present invention, and Figure 3 is a second embodiment of the present invention.
4 is an enlarged vertical sectional view of the burner 16 in FIG. 2, and FIG.
It is a sectional view seen from the cutting plane line - of the figure. 16... Burner, 22... Inner cylinder, 24... Outer cylinder, 30... Air supply pipe, 32... Passage, 33...
...Blank plate, 34...Support rod.
Claims (1)
を供給するための外筒とを同心二重環状に配置し
て構成されたバーナにおいて、前記内筒の途中に
は内筒内周面との間に環状の間隙を形成する円板
状の偏流板が挿入され、前記内筒にはその半径方
向に沿つて空気供給管が接続され、前記偏流板は
空気供給管の接続位置よりも下流側に配置され、
しかも内筒の軸線に関して空気供給管寄りの部分
が内筒の軸線に沿つて空気供給管寄りにあるよう
に内筒の軸直角方向に対して傾斜され、前記偏流
板には、内筒と同心である支持棒が固着され、 外筒には、内筒の下端部よりも上方で、半径方
向に沿つて燃料供給管が接続され、 内筒よりも下方で、外筒の下端部内周面には下
になるにつれて小径となり、かつ中央には軸線方
向に一様な内径を有する孔が形成された火災保持
部材が形成されることを特徴とするバーナ。[Claims for Utility Model Registration] In a burner configured by arranging an inner cylinder for supplying combustion air and an outer cylinder for supplying gaseous fuel in a concentric double ring, A disc-shaped flow deflection plate is inserted into the inner cylinder to form an annular gap between the inner circumferential surface of the inner cylinder, an air supply pipe is connected to the inner cylinder along its radial direction, and the flow deflection plate is used to supply air. Located downstream of the supply pipe connection location,
Moreover, the part of the inner cylinder closer to the air supply pipe is inclined with respect to the direction perpendicular to the axis of the inner cylinder so that the part closer to the air supply pipe is located along the axis of the inner cylinder, and A support rod is fixed to the outer cylinder, a fuel supply pipe is connected to the outer cylinder along the radial direction above the lower end of the inner cylinder, and a fuel supply pipe is connected to the inner peripheral surface of the lower end of the outer cylinder below the inner cylinder. A burner characterized in that a fire retaining member is formed in which the diameter becomes smaller toward the bottom and a hole having a uniform inner diameter in the axial direction is formed in the center.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12067480U JPS6119303Y2 (en) | 1980-08-25 | 1980-08-25 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12067480U JPS6119303Y2 (en) | 1980-08-25 | 1980-08-25 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5746225U JPS5746225U (en) | 1982-03-15 |
| JPS6119303Y2 true JPS6119303Y2 (en) | 1986-06-11 |
Family
ID=29481345
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12067480U Expired JPS6119303Y2 (en) | 1980-08-25 | 1980-08-25 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6119303Y2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59113288U (en) * | 1983-01-20 | 1984-07-31 | 松下電器産業株式会社 | folding bicycle |
| JPS609782U (en) * | 1983-07-01 | 1985-01-23 | ブリヂストンサイクル株式会社 | folding bicycle backhawk |
-
1980
- 1980-08-25 JP JP12067480U patent/JPS6119303Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5746225U (en) | 1982-03-15 |
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