DE2418841C3 - Wärmetauscher, insbesondere regenerativ gekühlte Brennkammern für Flüssigkeitsraketentriebwerke und Verfahren zu ihrer Herstellung - Google Patents
Wärmetauscher, insbesondere regenerativ gekühlte Brennkammern für Flüssigkeitsraketentriebwerke und Verfahren zu ihrer HerstellungInfo
- Publication number
- DE2418841C3 DE2418841C3 DE2418841A DE2418841A DE2418841C3 DE 2418841 C3 DE2418841 C3 DE 2418841C3 DE 2418841 A DE2418841 A DE 2418841A DE 2418841 A DE2418841 A DE 2418841A DE 2418841 C3 DE2418841 C3 DE 2418841C3
- Authority
- DE
- Germany
- Prior art keywords
- gold
- layer
- webs
- base body
- intermediate layer
- 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
- 238000000034 method Methods 0.000 title claims description 37
- 238000002485 combustion reaction Methods 0.000 title claims description 11
- 239000007788 liquid Substances 0.000 title claims description 9
- 238000004519 manufacturing process Methods 0.000 title claims description 7
- 230000008569 process Effects 0.000 title description 6
- 239000010931 gold Substances 0.000 claims description 60
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims description 58
- 229910052737 gold Inorganic materials 0.000 claims description 58
- 238000005260 corrosion Methods 0.000 claims description 43
- 239000010949 copper Substances 0.000 claims description 34
- 230000007797 corrosion Effects 0.000 claims description 34
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 33
- 229910052802 copper Inorganic materials 0.000 claims description 33
- 238000001816 cooling Methods 0.000 claims description 26
- 238000011049 filling Methods 0.000 claims description 25
- 150000001875 compounds Chemical class 0.000 claims description 24
- 239000000463 material Substances 0.000 claims description 15
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 12
- 239000000945 filler Substances 0.000 claims description 11
- 229910000510 noble metal Inorganic materials 0.000 claims description 10
- 238000009713 electroplating Methods 0.000 claims description 9
- 238000005554 pickling Methods 0.000 claims description 9
- ROOXNKNUYICQNP-UHFFFAOYSA-N ammonium persulfate Chemical compound [NH4+].[NH4+].[O-]S(=O)(=O)OOS([O-])(=O)=O ROOXNKNUYICQNP-UHFFFAOYSA-N 0.000 claims description 8
- 230000007547 defect Effects 0.000 claims description 8
- 230000008021 deposition Effects 0.000 claims description 8
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 7
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 claims description 6
- 239000000446 fuel Substances 0.000 claims description 6
- 229910052759 nickel Inorganic materials 0.000 claims description 6
- 230000004888 barrier function Effects 0.000 claims description 5
- 238000005530 etching Methods 0.000 claims description 5
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 4
- 229910001870 ammonium persulfate Inorganic materials 0.000 claims description 4
- 230000007704 transition Effects 0.000 claims description 4
- 239000007769 metal material Substances 0.000 claims description 3
- 239000000110 cooling liquid Substances 0.000 claims description 2
- 229910052742 iron Inorganic materials 0.000 claims description 2
- 238000003825 pressing Methods 0.000 claims description 2
- 229910052709 silver Inorganic materials 0.000 claims description 2
- 239000004332 silver Substances 0.000 claims description 2
- 238000005476 soldering Methods 0.000 claims description 2
- 238000002844 melting Methods 0.000 claims 2
- 230000008018 melting Effects 0.000 claims 2
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims 1
- 239000003795 chemical substances by application Substances 0.000 claims 1
- 230000002950 deficient Effects 0.000 claims 1
- 229910052751 metal Inorganic materials 0.000 claims 1
- 239000002184 metal Substances 0.000 claims 1
- 239000000843 powder Substances 0.000 claims 1
- 239000010410 layer Substances 0.000 description 105
- 239000011229 interlayer Substances 0.000 description 7
- 239000011148 porous material Substances 0.000 description 7
- 230000004913 activation Effects 0.000 description 6
- 238000001994 activation Methods 0.000 description 6
- 239000002244 precipitate Substances 0.000 description 5
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 4
- 238000005498 polishing Methods 0.000 description 4
- 229910000531 Co alloy Inorganic materials 0.000 description 3
- QXZUUHYBWMWJHK-UHFFFAOYSA-N [Co].[Ni] Chemical compound [Co].[Ni] QXZUUHYBWMWJHK-UHFFFAOYSA-N 0.000 description 3
- 229910002804 graphite Inorganic materials 0.000 description 3
- 239000010439 graphite Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 2
- 239000012790 adhesive layer Substances 0.000 description 2
- 239000011324 bead Substances 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 125000000896 monocarboxylic acid group Chemical group 0.000 description 2
- 238000007747 plating Methods 0.000 description 2
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 2
- 239000003380 propellant Substances 0.000 description 2
- 230000001172 regenerating effect Effects 0.000 description 2
- 238000011282 treatment Methods 0.000 description 2
- XFXPMWWXUTWYJX-UHFFFAOYSA-N Cyanide Chemical compound N#[C-] XFXPMWWXUTWYJX-UHFFFAOYSA-N 0.000 description 1
- YZCKVEUIGOORGS-OUBTZVSYSA-N Deuterium Chemical compound [2H] YZCKVEUIGOORGS-OUBTZVSYSA-N 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- FFBHFFJDDLITSX-UHFFFAOYSA-N benzyl N-[2-hydroxy-4-(3-oxomorpholin-4-yl)phenyl]carbamate Chemical compound OC1=C(NC(=O)OCC2=CC=CC=C2)C=CC(=C1)N1CCOCC1=O FFBHFFJDDLITSX-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- -1 chlorine ions Chemical class 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 230000036461 convulsion Effects 0.000 description 1
- 229910000365 copper sulfate Inorganic materials 0.000 description 1
- ARUVKPQLZAKDPS-UHFFFAOYSA-L copper(II) sulfate Chemical compound [Cu+2].[O-][S+2]([O-])([O-])[O-] ARUVKPQLZAKDPS-UHFFFAOYSA-L 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000005242 forging Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000008240 homogeneous mixture Substances 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 229910017604 nitric acid Inorganic materials 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 235000021110 pickles Nutrition 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- MNWBNISUBARLIT-UHFFFAOYSA-N sodium cyanide Chemical compound [Na+].N#[C-] MNWBNISUBARLIT-UHFFFAOYSA-N 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
- 229920005992 thermoplastic resin Polymers 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02K—JET-PROPULSION PLANTS
- F02K9/00—Rocket-engine plants, i.e. plants carrying both fuel and oxidant therefor; Control thereof
- F02K9/42—Rocket-engine plants, i.e. plants carrying both fuel and oxidant therefor; Control thereof using liquid or gaseous propellants
- F02K9/60—Constructional parts; Details not otherwise provided for
- F02K9/62—Combustion or thrust chambers
- F02K9/64—Combustion or thrust chambers having cooling arrangements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
- F28D2021/0019—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for
- F28D2021/0077—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for for tempering, e.g. with cooling or heating circuits for temperature control of elements
- F28D2021/0078—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for for tempering, e.g. with cooling or heating circuits for temperature control of elements in the form of cooling walls
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F2220/00—Closure means, e.g. end caps on header boxes or plugs on conduits
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Electroplating Methods And Accessories (AREA)
- Testing Of Engines (AREA)
Priority Applications (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE2418841A DE2418841C3 (de) | 1974-04-19 | 1974-04-19 | Wärmetauscher, insbesondere regenerativ gekühlte Brennkammern für Flüssigkeitsraketentriebwerke und Verfahren zu ihrer Herstellung |
| GB13038/75A GB1488979A (en) | 1974-04-19 | 1975-03-27 | Heat exchangers primarily for regeneratively cooled combustion chambers of liquid-fuelled rocket propulsion units |
| FR7511657A FR2268163B3 (enExample) | 1974-04-19 | 1975-04-15 | |
| US05/568,832 US4078604A (en) | 1974-04-19 | 1975-04-17 | Cooling channel surface arrangement for a heat exchanger wall construction |
| JP50046592A JPS5823495B2 (ja) | 1974-04-19 | 1975-04-18 | 熱交換器及びその製造方法 |
| IN927/CAL/1975A IN145320B (enExample) | 1974-04-19 | 1975-05-09 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE2418841A DE2418841C3 (de) | 1974-04-19 | 1974-04-19 | Wärmetauscher, insbesondere regenerativ gekühlte Brennkammern für Flüssigkeitsraketentriebwerke und Verfahren zu ihrer Herstellung |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| DE2418841A1 DE2418841A1 (de) | 1975-11-20 |
| DE2418841B2 DE2418841B2 (de) | 1978-08-31 |
| DE2418841C3 true DE2418841C3 (de) | 1979-04-26 |
Family
ID=5913289
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE2418841A Expired DE2418841C3 (de) | 1974-04-19 | 1974-04-19 | Wärmetauscher, insbesondere regenerativ gekühlte Brennkammern für Flüssigkeitsraketentriebwerke und Verfahren zu ihrer Herstellung |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US4078604A (enExample) |
| JP (1) | JPS5823495B2 (enExample) |
| DE (1) | DE2418841C3 (enExample) |
| FR (1) | FR2268163B3 (enExample) |
| GB (1) | GB1488979A (enExample) |
| IN (1) | IN145320B (enExample) |
Families Citing this family (42)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3011282C2 (de) * | 1980-03-24 | 1985-08-08 | Kernforschungsanlage Juelich Gmbh, 5170 Juelich | Wärmeabsorber, insbesondere Plasmastrahlenabsorber |
| JPS58214652A (ja) * | 1982-06-08 | 1983-12-13 | Natl Aerospace Lab | 複合冷却ロケツト燃焼器 |
| DE3243713C2 (de) * | 1982-11-26 | 1985-05-15 | Fr. Kammerer GmbH, 7530 Pforzheim | Flachwärmetauscherplatte und Verfahren zu deren Herstellung |
| US4707225A (en) * | 1986-01-06 | 1987-11-17 | Rockwell International Corporation | Fluid-cooled channel construction |
| US4871623A (en) * | 1988-02-19 | 1989-10-03 | Minnesota Mining And Manufacturing Company | Sheet-member containing a plurality of elongated enclosed electrodeposited channels and method |
| US5070606A (en) * | 1988-07-25 | 1991-12-10 | Minnesota Mining And Manufacturing Company | Method for producing a sheet member containing at least one enclosed channel |
| DE4015204C1 (enExample) * | 1990-05-11 | 1991-10-17 | Mtu Muenchen Gmbh | |
| US5891584A (en) * | 1991-03-25 | 1999-04-06 | General Electric Company | Coated article for hot hydrocarbon fluid and method of preventing fuel thermal degradation deposits |
| US5805973A (en) * | 1991-03-25 | 1998-09-08 | General Electric Company | Coated articles and method for the prevention of fuel thermal degradation deposits |
| DE4115403A1 (de) * | 1991-05-10 | 1992-11-12 | Mtu Muenchen Gmbh | Duesenwand |
| DE4315256A1 (de) * | 1993-05-07 | 1994-11-10 | Mtu Muenchen Gmbh | Einrichtung zur Verteilung sowie Zu- und Abführung eines Kühlmittels an einer Wand eines Turbo-, insbesondere Turbo-Staustrahltriebwerks |
| JPH08270950A (ja) * | 1995-02-01 | 1996-10-18 | Mitsubishi Heavy Ind Ltd | ガスタービン燃焼器 |
| DE19505357C1 (de) * | 1995-02-17 | 1996-05-23 | Daimler Benz Aerospace Ag | Verfahren zur Kühlung von Triebwerkswänden und Wandstruktur zur Durchführung desselben |
| DE19602731C1 (de) * | 1996-01-26 | 1997-07-10 | Daimler Benz Aerospace Ag | Wandstruktur für treibstoffgekühlte Triebwerkswände |
| JP3268734B2 (ja) * | 1996-11-15 | 2002-03-25 | 古河電気工業株式会社 | ヒートパイプを用いた電子機器放熱ユニットの製造方法 |
| JP4048579B2 (ja) * | 1997-08-28 | 2008-02-20 | 住友電気工業株式会社 | 冷媒流路を含む熱消散体とその製造方法 |
| US6156439A (en) * | 1997-10-21 | 2000-12-05 | General Electric Company | Coating for preventing formation of deposits on surfaces contacting hydrocarbon fluids and method therefor |
| US6141968A (en) * | 1997-10-29 | 2000-11-07 | Pratt & Whitney Canada Corp. | Fuel nozzle for gas turbine engine with slotted fuel conduits and cover |
| DE19801407C2 (de) * | 1998-01-16 | 1999-12-02 | Daimler Chrysler Ag | Brennkammer für Hochleistungstriebwerke und Düsen |
| FR2776215B1 (fr) * | 1998-03-20 | 2000-06-16 | Snecma | Procede de fabrication d'un circuit regeneratif a fort flux thermique, notamment pour chambre de combustion de moteur-fusee |
| DE19901422C2 (de) * | 1999-01-18 | 2000-11-16 | Daimler Chrysler Ag | Brennkammer-Kühlstruktur für ein Raketentriebwerk |
| DE19926025A1 (de) * | 1999-05-28 | 2000-11-30 | Atotech Deutschland Gmbh | Verfahren zum Herstellen von Mikrobauteilen |
| US7189378B2 (en) * | 2002-02-04 | 2007-03-13 | Kulite Semiconductor Products, Inc. | Miniature reaction chamber template structure for fabrication of nanoscale molecular systems and devices |
| DE10348141B3 (de) * | 2003-10-09 | 2005-02-03 | Visteon Global Technologies, Inc., Dearborn | Innerer Wärmeübertrager für Hochdruckkältemittel mit Akkumulator |
| US20060032212A1 (en) * | 2004-08-10 | 2006-02-16 | The Boeing Company | Lightweight rocket engine combustion chamber and associated method |
| DE102004047533A1 (de) * | 2004-09-30 | 2006-04-06 | Carl Zeiss Smt Ag | Vorrichtung zur Temperierung von Elementen |
| US7942002B2 (en) * | 2006-03-03 | 2011-05-17 | Pratt & Whitney Canada Corp. | Fuel conveying member with side-brazed sealing members |
| CA2935651A1 (en) | 2007-10-09 | 2009-04-16 | Gladius Pharmaceuticals Corporation | Broad spectrum beta-lactamase inhibitors |
| US20110239654A1 (en) | 2010-04-06 | 2011-10-06 | Gas Turbine Efficiency Sweden Ab | Angled seal cooling system |
| DE102017003854A1 (de) * | 2017-04-20 | 2018-10-25 | Leopold Kostal Gmbh & Co. Kg | Gehäuse für ein elektrisches oder elektronisches Gerät |
| CN107472556A (zh) * | 2017-07-28 | 2017-12-15 | 北京控制工程研究所 | 一种mems电喷雾推力器阵列结构及实现方法 |
| US11174789B2 (en) | 2018-05-23 | 2021-11-16 | General Electric Company | Air cycle assembly for a gas turbine engine assembly |
| US11067000B2 (en) | 2019-02-13 | 2021-07-20 | General Electric Company | Hydraulically driven local pump |
| DE102020133967A1 (de) * | 2020-12-17 | 2022-06-23 | Arianegroup Gmbh | Brennkammer, Verfahren zur Herstellung einer Brennkammer und Triebwerk |
| US11788470B2 (en) | 2021-03-01 | 2023-10-17 | General Electric Company | Gas turbine engine thermal management |
| CN113389659B (zh) * | 2021-07-27 | 2022-10-25 | 中国人民解放军国防科技大学 | 一种低热沉的高温燃气通道设计方法 |
| US12535033B2 (en) | 2022-11-01 | 2026-01-27 | General Electric Company | Gas turbine engine |
| US12392290B2 (en) | 2022-11-01 | 2025-08-19 | General Electric Company | Gas turbine engine |
| US12196131B2 (en) | 2022-11-01 | 2025-01-14 | General Electric Company | Gas turbine engine |
| US12410753B2 (en) | 2022-11-01 | 2025-09-09 | General Electric Company | Gas turbine engine |
| US12428992B2 (en) | 2022-11-01 | 2025-09-30 | General Electric Company | Gas turbine engine |
| US12503980B2 (en) | 2022-11-01 | 2025-12-23 | General Electric Company | Gas turbine engine |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3154914A (en) * | 1959-12-12 | 1964-11-03 | Bolkow Entwicklungen Kg | Rocket engine construction |
| US3131535A (en) * | 1960-04-07 | 1964-05-05 | Pneumo Dynamics Corp | Rocket nozzle |
| US3439502A (en) * | 1966-01-25 | 1969-04-22 | North American Rockwell | Cooling of gas generators |
| US3467583A (en) * | 1966-05-16 | 1969-09-16 | Camin Lab | Process for making a hollow body with protective inner layer for high-temperature applications |
| FR2012723A1 (enExample) * | 1968-07-11 | 1970-03-20 | Messerschmitt Boelkow Blohm | |
| US3798902A (en) * | 1968-08-21 | 1974-03-26 | Messerschmitt Boelkow Blohm | Arrangement of cooling channels for rocket engine combustion chambers |
| DE1941296B2 (de) * | 1969-08-14 | 1971-09-30 | Messerschmitt Bolkow Blohm GmbH, 8000 München | Durch ein fluessiges medium regenerativ gekuehlte brenn kammer mit schubduese |
| US3692637A (en) * | 1969-11-24 | 1972-09-19 | Carl Helmut Dederra | Method of fabricating a hollow structure having cooling channels |
| US3780533A (en) * | 1972-05-17 | 1973-12-25 | Us Air Force | Composite wall for a regeneratively cooled thrust chamber of a liquid propellant rocket engine |
| US3782118A (en) * | 1972-12-18 | 1974-01-01 | Messerschmitt Boelkow Blohm | Regeneratively cooled thrust gas generator construction and method of making same |
-
1974
- 1974-04-19 DE DE2418841A patent/DE2418841C3/de not_active Expired
-
1975
- 1975-03-27 GB GB13038/75A patent/GB1488979A/en not_active Expired
- 1975-04-15 FR FR7511657A patent/FR2268163B3/fr not_active Expired
- 1975-04-17 US US05/568,832 patent/US4078604A/en not_active Expired - Lifetime
- 1975-04-18 JP JP50046592A patent/JPS5823495B2/ja not_active Expired
- 1975-05-09 IN IN927/CAL/1975A patent/IN145320B/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| US4078604A (en) | 1978-03-14 |
| JPS50140719A (enExample) | 1975-11-12 |
| JPS5823495B2 (ja) | 1983-05-16 |
| FR2268163B3 (enExample) | 1978-10-06 |
| GB1488979A (en) | 1977-10-19 |
| FR2268163A1 (enExample) | 1975-11-14 |
| DE2418841A1 (de) | 1975-11-20 |
| DE2418841B2 (de) | 1978-08-31 |
| IN145320B (enExample) | 1978-09-23 |
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