IT1094935B - Nastro metallico per produrre scambiatori di calore - Google Patents
Nastro metallico per produrre scambiatori di caloreInfo
- Publication number
- IT1094935B IT1094935B IT23946/78A IT2394678A IT1094935B IT 1094935 B IT1094935 B IT 1094935B IT 23946/78 A IT23946/78 A IT 23946/78A IT 2394678 A IT2394678 A IT 2394678A IT 1094935 B IT1094935 B IT 1094935B
- Authority
- IT
- Italy
- Prior art keywords
- heat exchangers
- metal tape
- produce heat
- produce
- tape
- Prior art date
Links
- 239000002184 metal Substances 0.000 title 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F3/00—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
- F24F3/12—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling
- F24F3/14—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification
- F24F3/1411—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification by absorbing or adsorbing water, e.g. using an hygroscopic desiccant
- F24F3/1423—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification by absorbing or adsorbing water, e.g. using an hygroscopic desiccant with a moving bed of solid desiccants, e.g. a rotary wheel supporting solid desiccants
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B15/00—Layered products comprising a layer of metal
- B32B15/14—Layered products comprising a layer of metal next to a fibrous or filamentary layer
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
- B32B3/26—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer
- B32B3/28—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer characterised by a layer comprising a deformed thin sheet, i.e. the layer having its entire thickness deformed out of the plane, e.g. corrugated, crumpled
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
- B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
-
- 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
- F28D19/00—Regenerative heat-exchange apparatus in which the intermediate heat-transfer medium or body is moved successively into contact with each heat-exchange medium
- F28D19/04—Regenerative heat-exchange apparatus in which the intermediate heat-transfer medium or body is moved successively into contact with each heat-exchange medium using rigid bodies, e.g. mounted on a movable carrier
- F28D19/041—Regenerative heat-exchange apparatus in which the intermediate heat-transfer medium or body is moved successively into contact with each heat-exchange medium using rigid bodies, e.g. mounted on a movable carrier with axial flow through the intermediate heat-transfer medium
- F28D19/042—Rotors; Assemblies of heat absorbing masses
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
- B32B2262/10—Inorganic fibres
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
- B32B2262/14—Mixture of at least two fibres made of different materials
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2264/00—Composition or properties of particles which form a particulate layer or are present as additives
- B32B2264/10—Inorganic particles
- B32B2264/102—Oxide or hydroxide
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/70—Other properties
- B32B2307/728—Hydrophilic
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2203/00—Devices or apparatus used for air treatment
- F24F2203/10—Rotary wheel
- F24F2203/1032—Desiccant wheel
- F24F2203/1036—Details
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2203/00—Devices or apparatus used for air treatment
- F24F2203/10—Rotary wheel
- F24F2203/104—Heat exchanger wheel
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2203/00—Devices or apparatus used for air treatment
- F24F2203/10—Rotary wheel
- F24F2203/1048—Geometric details
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2203/00—Devices or apparatus used for air treatment
- F24F2203/10—Rotary wheel
- F24F2203/1068—Rotary wheel comprising one rotor
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2203/00—Devices or apparatus used for air treatment
- F24F2203/10—Rotary wheel
- F24F2203/1084—Rotary wheel comprising two flow rotor segments
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/23—Sheet including cover or casing
- Y10T428/234—Sheet including cover or casing including elements cooperating to form cells
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
- Y10T428/24628—Nonplanar uniform thickness material
- Y10T428/24661—Forming, or cooperating to form cells
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
- Y10T428/24628—Nonplanar uniform thickness material
- Y10T428/24669—Aligned or parallel nonplanarities
- Y10T428/24694—Parallel corrugations
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
- Y10T428/24628—Nonplanar uniform thickness material
- Y10T428/24669—Aligned or parallel nonplanarities
- Y10T428/24694—Parallel corrugations
- Y10T428/24711—Plural corrugated components
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
- Y10T428/24628—Nonplanar uniform thickness material
- Y10T428/24669—Aligned or parallel nonplanarities
- Y10T428/24694—Parallel corrugations
- Y10T428/24711—Plural corrugated components
- Y10T428/24727—Plural corrugated components with planar component
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
- Laminated Bodies (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE7717356 | 1977-06-02 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| IT7823946A0 IT7823946A0 (it) | 1978-05-29 |
| IT1094935B true IT1094935B (it) | 1985-08-10 |
Family
ID=6679414
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| IT23946/78A IT1094935B (it) | 1977-06-02 | 1978-05-29 | Nastro metallico per produrre scambiatori di calore |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US4172164A (it) |
| CH (1) | CH628730A5 (it) |
| FR (1) | FR2393259A1 (it) |
| GB (1) | GB1595147A (it) |
| IT (1) | IT1094935B (it) |
| SE (1) | SE7806234L (it) |
Families Citing this family (38)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2803299C2 (de) * | 1978-01-26 | 1983-11-03 | Kurt Schlattingen Kunz | Metallbeschichtete, im sichtbaren Licht durchscheinende Kunststoffolie |
| US4361620A (en) * | 1979-03-08 | 1982-11-30 | Wing Industries, Inc. | Total energy exchange medium and method of making the same |
| SE436628B (sv) * | 1980-04-25 | 1985-01-14 | Munters Ab Carl | Sett att framstella cellkroppar for paverkan av ett medium medelst ett annat medium |
| JPS5726331A (en) * | 1980-07-24 | 1982-02-12 | Toyobo Co Ltd | Air cooling system and air conditioning system using activated carbon fiber |
| US4439812A (en) * | 1981-11-02 | 1984-03-27 | General Electric Company | Impregnated capacitor foil |
| SE8206809L (sv) * | 1982-11-30 | 1984-05-31 | Sven Melker Nilsson | Vermevexlare |
| AT384189B (de) * | 1983-10-10 | 1987-10-12 | Fischer Gmbh | Bauplatte |
| JPS60205194A (ja) * | 1984-03-28 | 1985-10-16 | Tokai Kinzoku Kk | 熱交換器のフイン材 |
| US4727931A (en) * | 1985-06-19 | 1988-03-01 | Erling Berner | Air exchanging apparatus and method |
| US4769053A (en) * | 1987-03-26 | 1988-09-06 | Semco Mfg., Inc. | High efficiency sensible and latent heat exchange media with selected transfer for a total energy recovery wheel |
| DE3812427A1 (de) * | 1988-04-14 | 1989-10-26 | Leybold Ag | Verfahren zur herstellung eines regenerators fuer eine tieftemperatur-kaeltemaschine und nach diesem verfahren hergestellter regenerator |
| US5032447A (en) * | 1988-06-08 | 1991-07-16 | Bailey Douglas J | Fire barrier material |
| JPH02101394A (ja) * | 1988-10-07 | 1990-04-13 | Honda Motor Co Ltd | アルミニウム製熱交換器 |
| GB9126589D0 (en) * | 1991-12-14 | 1992-02-12 | Glynwed Plastics | Wire mesh panels adapted for heat energy transfer and storage |
| US5401706A (en) * | 1993-01-06 | 1995-03-28 | Semco Incorporated | Desiccant-coated substrate and method of manufacture |
| US5300138A (en) * | 1993-01-21 | 1994-04-05 | Semco Incorporated | Langmuir moderate type 1 desiccant mixture for air treatment |
| CA2134168C (en) | 1994-10-24 | 2002-06-11 | Frederic Lagace | Ventilation system |
| US5580369A (en) * | 1995-01-30 | 1996-12-03 | Laroche Industries, Inc. | Adsorption air conditioning system |
| US5650221A (en) * | 1995-07-06 | 1997-07-22 | Laroche Industries, Inc. | High strength, low pressure drop sensible and latent heat exchange wheel |
| US5727616A (en) * | 1995-10-27 | 1998-03-17 | Edentec | Elastomeric heat exchanger bed |
| US5758508A (en) * | 1996-02-05 | 1998-06-02 | Larouche Industries Inc. | Method and apparatus for cooling warm moisture-laden air |
| US5660048A (en) * | 1996-02-16 | 1997-08-26 | Laroche Industries, Inc. | Air conditioning system for cooling warm moisture-laden air |
| US5860284A (en) * | 1996-07-19 | 1999-01-19 | Novel Aire Technologies, L.L.C. | Thermally regenerated desiccant air conditioner with indirect evaporative cooler |
| US6228506B1 (en) | 1998-03-16 | 2001-05-08 | Natural Resources Canada | Cellulose/polymer composite enthalpy exchanger and method for its manufacture |
| US6110533A (en) * | 1998-03-16 | 2000-08-29 | Her Majesty The Queen In Right Of Canada, As Represented By The Minister Of Natural Resources | Polymeric desiccant articles and process for their manufacture |
| EP0957320B1 (en) * | 1998-05-14 | 2008-07-09 | Seibu Giken Co., Ltd. | Heat exchanger element |
| US6951242B1 (en) | 1999-02-04 | 2005-10-04 | Des Champs Nicholas H | Enthalpy heat exchanger with variable recirculation and filtration |
| US6780227B2 (en) * | 2000-10-13 | 2004-08-24 | Emprise Technology Associates Corp. | Method of species exchange and an apparatus therefore |
| EP1668297A1 (en) * | 2003-08-20 | 2006-06-14 | Oxycell Holding B.V. | Heat exchange element |
| DE10357307A1 (de) * | 2003-12-05 | 2005-07-14 | 2H Kunststoff Gmbh | Kontaktkörper, insbesondere für einen Verdunstungsbefeuchter, und Verfahren zur Herstellung eines Kontaktkörpers |
| US7886986B2 (en) | 2006-11-08 | 2011-02-15 | Semco Inc. | Building, ventilation system, and recovery device control |
| CA2691197C (en) | 2007-06-21 | 2013-03-12 | Gen-Probe Incorporated | Instrument and receptacles for use in performing processes |
| US20090101302A1 (en) * | 2007-10-17 | 2009-04-23 | Tupper Myron D | Dynamic heat exchanger |
| NO20101765A1 (no) * | 2010-12-16 | 2012-06-18 | Covent As | Belagt metallfolie og anvendelse av samme i en energigjenvinner |
| KR20120113607A (ko) * | 2011-04-05 | 2012-10-15 | 한국과학기술연구원 | 고분자 현열 로터 |
| NL2007827C2 (en) * | 2011-11-21 | 2013-05-23 | Oxycom Beheer Bv | Heat exchange matrix. |
| JP2017015369A (ja) * | 2015-07-06 | 2017-01-19 | 大阪瓦斯株式会社 | 熱交換素子及び調湿素子 |
| PL246102B1 (pl) * | 2022-02-24 | 2024-12-02 | Andrzej Krupa | Obrotowy metalowy zespół przekazywania ciepła dla obrotowego powietrznego wymiennika ciepła |
Family Cites Families (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB770201A (en) * | 1953-07-13 | 1957-03-20 | Munters Carl Georg | Improvements in heat exchangers |
| US3112184A (en) * | 1958-09-08 | 1963-11-26 | Corning Glass Works | Method of making ceramic articles |
| US3155153A (en) * | 1959-07-10 | 1964-11-03 | Lizenzia A G | Rotatable body for transfer of moisture or/and heat |
| GB979267A (en) | 1962-10-24 | 1965-01-01 | Expanded Metal | Packing material for heat resistant linings |
| US4051898A (en) * | 1969-03-20 | 1977-10-04 | Mitsubishi Denki Kabushiki Kaisha | Static heat-and-moisture exchanger |
| US3716441A (en) * | 1970-08-06 | 1973-02-13 | Sun Oil Co | Method for preparing laminated article of metallic, polymeric and wax impregnated cellulosic layers |
| US3901755A (en) * | 1972-05-24 | 1975-08-26 | Cons Bathurst Ltd | Bonding of polymers by surface activation |
| US4093435A (en) * | 1973-11-23 | 1978-06-06 | Wing Industries Inc. | Total heat energy exchangers |
| FI58559C (fi) * | 1975-01-30 | 1981-02-10 | Svenska Flaektfabriken Ab | Saett att framstaella en regenerativ fukt- och vaermevaexlare |
| SE389908B (sv) * | 1975-01-30 | 1976-11-22 | Svenska Flaektfabriken Ab | Regenerativ fukt- och vermevexlare |
| DE2518683C3 (de) * | 1975-04-26 | 1981-04-09 | 4P Verpackungen Gmbh, 8960 Kempten | Wärmeübertrager aus zwei miteinander verbundenen Aluminiumblechen |
| SE7600342L (sv) * | 1975-07-17 | 1977-01-18 | Aero Flow Dynamics Inc | Vermevexlare |
| DE2544439A1 (de) * | 1975-10-04 | 1977-04-14 | Alwa Gmbh | Kreiszylindrischer drehkoerper (waermeaustauschkoerper) fuer einen regenerativ- waermeaustauscher |
| US4055268A (en) * | 1975-11-18 | 1977-10-25 | Union Carbide Corporation | Cryogenic storage container |
-
1978
- 1978-05-19 CH CH545078A patent/CH628730A5/de not_active IP Right Cessation
- 1978-05-26 GB GB23524/78A patent/GB1595147A/en not_active Expired
- 1978-05-29 IT IT23946/78A patent/IT1094935B/it active
- 1978-05-30 SE SE7806234A patent/SE7806234L/xx unknown
- 1978-05-30 US US05/910,358 patent/US4172164A/en not_active Expired - Lifetime
- 1978-06-01 FR FR7816483A patent/FR2393259A1/fr not_active Withdrawn
Also Published As
| Publication number | Publication date |
|---|---|
| SE7806234L (sv) | 1978-12-03 |
| IT7823946A0 (it) | 1978-05-29 |
| US4172164A (en) | 1979-10-23 |
| CH628730A5 (de) | 1982-03-15 |
| FR2393259A1 (fr) | 1978-12-29 |
| GB1595147A (en) | 1981-08-05 |
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