WO1994004246A1 - Purificateur a filtre pour systeme de protection de l'environnement - Google Patents

Purificateur a filtre pour systeme de protection de l'environnement Download PDF

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Publication number
WO1994004246A1
WO1994004246A1 PCT/US1992/007158 US9207158W WO9404246A1 WO 1994004246 A1 WO1994004246 A1 WO 1994004246A1 US 9207158 W US9207158 W US 9207158W WO 9404246 A1 WO9404246 A1 WO 9404246A1
Authority
WO
WIPO (PCT)
Prior art keywords
type
filter
filter section
pipe
fluid
Prior art date
Application number
PCT/US1992/007158
Other languages
English (en)
Inventor
Jossy Macsanz
Original Assignee
Jossy Macsanz
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Jossy Macsanz filed Critical Jossy Macsanz
Priority to AU25853/92A priority Critical patent/AU2585392A/en
Priority to PCT/US1992/007158 priority patent/WO1994004246A1/fr
Publication of WO1994004246A1 publication Critical patent/WO1994004246A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/24—Particle separators, e.g. dust precipitators, using rigid hollow filter bodies
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/56—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with multiple filtering elements, characterised by their mutual disposition
    • B01D46/62—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with multiple filtering elements, characterised by their mutual disposition connected in series
    • B01D46/64—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with multiple filtering elements, characterised by their mutual disposition connected in series arranged concentrically or coaxially
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
    • F01N3/021—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
    • F01N3/021—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters
    • F01N3/0212—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters with one or more perforated tubes surrounded by filtering material, e.g. filter candles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2265/00—Casings, housings or mounting for filters specially adapted for separating dispersed particles from gases or vapours
    • B01D2265/06—Details of supporting structures for filtering material, e.g. cores
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2279/00—Filters adapted for separating dispersed particles from gases or vapours specially modified for specific uses
    • B01D2279/30—Filters adapted for separating dispersed particles from gases or vapours specially modified for specific uses for treatment of exhaust gases from IC Engines
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2270/00—Mixing air with exhaust gases
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2290/00—Movable parts or members in exhaust systems for other than for control purposes
    • F01N2290/02—Movable parts or members in exhaust systems for other than for control purposes with continuous rotary movement
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2450/00—Methods or apparatus for fitting, inserting or repairing different elements
    • F01N2450/30—Removable or rechangeable blocks or cartridges, e.g. for filters
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2510/00—Surface coverings
    • F01N2510/10—Surface coverings for preventing carbon deposits, e.g. chromium
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
    • F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
    • F01N3/24—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by constructional aspects of converting apparatus
    • F01N3/30—Arrangements for supply of additional air
    • F01N3/32—Arrangements for supply of additional air using air pump
    • 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/12—Improving ICE efficiencies

Definitions

  • the instant invention relates to articulated, sectioned, fixed media, fluid flow filters and particularly to fluid flow filters that are employed in connection with the filtering of contaminants from flowing gaseous or other fluids such as may be encountered in the exhaust gases of internal combustion engines or domestic furnaces or other heaters using fossil fuels, or even in an application employed for the removal of pollutants from ambient urban smog-filled air, for example. It is contemplated that the instant invention is also applicable to the removal of contaminants from liquid fluids as well.
  • the contaminated fluid to be filtered by having contaminants removed therefrom be kept flowing at a rate such that excessive back pressures are not built up so as to restrict the free elimination of the contaminants from the fluids to be filtered in the primary operating system. It is especially important to maintain such free flow and to eliminate back exhaust pressures in internal combustion engines as used for automotive applications in order to maintain good performance of the engine.
  • the prior art includes United States Patent number 3,406,501, to D.R. Watkins for AUTOMOBILE ENGINE EXHAUST FILTER, issued October 22, 1968.
  • the device described in the Watkins patent, as the title implies, is directed to an exhaust filter attached by clamping to the tailpipe of an automobile.
  • a hollow cylindrical shell receives a replaceable filter cartridge filled with the filtering material which is secured therein by means of an endcap.
  • the exhaust gasses enter the filter under the exhaust pressure normally present in an automobile exhaust and flow through the filter unaided by any additional flow enhancement.
  • Tandem replaceable filter elements are positioned in spaced apart relationship so as to provide axial gaps there between. As well stated in the Abstract, "The axial gaps are sealed alternately on inner and outer radial ends to define outlet and inlet passages, respectively and to force axial flow through the filter elements.".
  • the exhaust inlet of the filter in addition to receiving the exhaust gases from the engine, provides also for connection to a heater in the form of an atomizing burner, which is used to heat particulates trapped in the filter to their combustion temperatures and burn them off so as to regenerate the filter when it has become clogged by such trapped combustible particulates.
  • a heater in the form of an atomizing burner which is used to heat particulates trapped in the filter to their combustion temperatures and burn them off so as to regenerate the filter when it has become clogged by such trapped combustible particulates.
  • FILTER FOR CLEANING THE EXHAUST FROM AN INTERNAL COMBUSTION ENGINE granted August 27, 1991, is directed primarily to the cleaning of filter elements, in this case tubular elements, by means of electrical energy. Cleaning is accomplished by burning off collected soot from the filter elements by energizing electrical heating elements placed strategically with respect to said filter elements. The bumoff of accumulated soot is enhanced by the supply of a small amount of air as noted at column 2 starting at about line 16. It appears that the sole function of the small amount of air is to promote the burnoff as stated.
  • an environmental control system filter purificator filter system having a plurality of filtering sections and in which contaminated fluids to be filtered are caused to flow from one filtering section into another in the manner to be described.
  • the contaminated fluid to be filtered enters the first section of the environmental control system filter purificator filter system by means of an entry port and the entry port has a turbine positioned and operated such that the contaminated fluid to be filtered is urged along in its entry into said first section thereby.
  • the contaminated fluid to be filtered is caused to enter a first type alternate typical filter section into a foraminous pipe thereof and through whose foramens the contaminated fluid to be filtered is caused to flow radially outwardly into the filtration medium resident in said first section whereby the contaminated fluid undergoes a first level of contaminant removal through the action of the filtration medium.
  • the contaminated, partially filtered fluid then flows into the filtration medium resident in a second type alternate typical filter section through a perforated baffle.
  • a second baffle situated at the distal end of the second type alternate typical filter section and which has no perforations, causes the fluid to reenter the foraminous pipe radially inwardly to continue its journey through the filter system by entering another first type alternate typical filter section, and so on.
  • This cycle of events is repeated for as many pairs of first and second alternate typical filter sections as have been designed into the particular environmental control system filter purificator filter system.
  • the number of pairs of these typical alternate filter sections to be used in any given filter system is at the disposal of the designer of that particular system.
  • the fluid to be filtered is forced to flow alternately through a plurality of first and second filter sections until it flows into the final section and then to exit the system.
  • Figure 1 is a perspective view of the environmental control system filter purificator filter system of the invention looking through the outer shell thereof so as to illustrate the placement of typical alternate filter sections.
  • Figure 2 is an enlargement and detail showing the typical alternate filter sections of the environmental control system filter purificator filter system and showing entry of flow-aiding fluid as provided by a turbine.
  • Figure 3 is a detail view showing details of a first type alternate typical baffle.
  • Figure 4 is a detail view showing details of a second type alternate typical baffle.
  • Figure 5 is an enlarged detail taken along the sight circle 5 of Figure 2.
  • Figure 6 is an illustration showing the invention applied to a furnace but having an exhaust turbine utilized in aiding the flow of fluid.
  • Figure 7 illustrates the invention applied to a conventional roof-type vent also utilizing an exhaust turbine to aid in the flow of fluid.
  • Figure 8 is an illustration showing application to a hot water heater vent or the like.
  • Figure 9 depicts a very large filter system such as may be used in an urban clean-air application to remove contaminants from smog-laden air.
  • Figure 10 is a detail drawing showing the elements of Figure 9 in greater detail.
  • Environmental Control System Filter Purificator filter system is denoted generally by the numeral 10 and comprises a contaminated fluid entry port 6 entered by means of contaminated fluid entry pipe 12.
  • An ambient fluid air, for example, in the case of gaseous filtration of automotive exhaust gases, is supplied under pressure generated by a forced fluid entry turbine 16 through forced fluid entry pipe 14 so as to enhance the flow of the contaminated fluid to be filtered.
  • the example of air is not intended to limit application of the invention to air or to any other gaseous fluid and all fluids, including liquids, are contemplated to fall within the purview of the invention.
  • a preferred embodiment of the filter system itself comprises an axially extended outer shell structure 18 having a near end cap 20 and a distal end cap 22 within which structure the filter system elements of section lengths are confined.
  • a first type separately removable alternate typical filter section is denoted by the numeral 24 while a second type separately removable alternate typical filter section, located immediately downstream of said first type filter section within said outer shell, is denoted by the numeral 26.
  • a foraminous inner pipe 32 having foramens 34 runs axially through the length of the filter system 10. Filter section lengths in the space between the outer shell 18 and the pipe 32 are filled with filtering material 36 and are alternately articulated by means of removable first and second type alternate typical baffles 28 and 30 respectively.
  • First type alternate typical baffle 28, detailed in Figure 3 has an outer periphery
  • baffle 28 is employed in the filter system in conjunction with pipe closing partition 40 which forces the flow of fluids through the perforations in baffle 28 rather than allowing flow through the foraminous inner pipe 32.
  • Second type alternate typical baffle 30, detailed in Figure 4 has an outer periphery 31 and has no perforations.
  • the baffle 30 serves to block the passage of the contaminated fluid to be filtered from flowing directly into the downstream contiguous filter section and forces the fluid to flow radially inwardly into the foraminous inner pipe 32 and thence into the following downstream contiguous filter system section.
  • the filtered fluid having been forced to flow alternately through a plurality of first and second filter sections, respectively 24 and 26, finally flows into the foraminous inner pipe in the final filter section and thence into the exit pipe 8.
  • the filtered fluid leaves the filter system and is expelled into the environment by way of filtered fluid exit pipe 8.
  • the Teflon coating 42 contemplated by the invention for all interior structural surfaces.
  • the Teflon coating has as its purpose the prevention of buildup of combustible contaminants. In some related prior art devices, these collected combustible contaminants have been known to spontaneously ignite causing a fire hazard. This danger is prevented in the instant invention by the Teflon coating 42 provided for all structural interior surfaces.
  • the application contemplated is a furnace 48 and the operation of the filter system differs in that instead of a pushing urge as generated by the turbine 16 of Figure 2, there is generated a pulling urge by means of the exhaust turbine 44.
  • the filter systems are the same.
  • the weather cap 46 has long been in conventional use and forms no part of the instant invention.
  • vent pipe 50 is a vent pipe 50 and may be put into use in a variety of venting applications.
  • the turbine 44 is the same as in Figure 6 and performs the same function.
  • weather cap 46 is well known and forms no part of this invention.
  • FIG 8 The application specifically illustrated in Figure 8 is to a hot water heater 52 in which the turbine 44 performs the same function as in Figures 6 and 7 and in which the weather cap 46 is not a part of this invention.
  • the contaminated fluid to be filtered is thus forced to flow radially outwardly through foramens 34 in foraminous inner pipe 32, into the first type separately removable alternate typical filter section 24 and into the filtering material therein as shown by flow arrows 54.
  • the contaminated, partially filtered fluid then flows through the perforations 38 in first type alternate typical baffle 28 and into the second type alternate typical filter section 26 and directly into the filtering material 36 thereof.
  • the second type alternate typical baffle 30, having no perforations therein, prevents the further forward axial flow of the partially filtered fluid in the filtering material of the second filter section and forces a radially inward flow into the foraminous inner pipe 32 through its foramens 34.
  • the large embodiment depicted shows an application of the environmental control system filter purificator filter system intended for the removal of smog and other pollutants from contaminated city air.
  • An air purification tower is denoted generally by the numeral 56.
  • the pollutants contemplated may stem from a variety of sources such as, for example, public transportation vehicles using large diesel engines; factory smokestacks; petroleum refineries; jet engine exhaust, barbecue pits, incinerators of both industrial and home types, chemical processing facilities and, in fact, all of the industrial and other air pollutants having their origin in modern technology and any other contaminating sources.
  • solar panels 58 will generate main power for the operation and control of the large filter system as operated and controlled from the operations building 72.
  • auxiliary power from other sources may be utilized during periods of low solar activity or for any other reason and at any other times.
  • Contaminated ambient air is taken in by means of the action of solar and auxiliary powered intake turbine 62 through wire mesh protective screen 60, furnished to prevent the entry of large insects and small birds into the system.
  • Solar powered intake turbine 62 is envisioned as usually powered by the solar panels 58 and has a turbine shaft 64 and turbine blades 66. Turbine 62 sucks ambient air through wire mesh screen 60 and forces it into a pressure enhancing intake funnel or throat 68 and thence into foraminous inner pipe 32.
  • the filtered fluid having been forced to flow alternately through a plurality of first and second filter sections, respectively 24 and 26, finally flows into the final filter section. After passage through the final filter section, the filtered air is expelled back into the environment through the exit apertures 74.
  • the operation of this larger system is essentially the same as for the smaller versions of the environmental control system filter purificator filter system.
  • service and maintenance elevators 70 be provided and operated for access to the first and second types of separately removable alternate typical filter sections, respectively 24 and 26, and to all other elements of the environmental control system filter purificator filter system, in general, by maintenance personnel for purposes of any necessary maintenance, repair and/or cleaning.
  • the fluid flow arrows 54 denote the contemplated flow motion of the contaminated fluid to be filtered and of the partially filtered fluid through the filter system.
  • the instant invention finds abundant application wherever contaminated fluids require removal of the contaminants.
  • the large urban areas of many cities are not able to control air pollution merely by attempting to control ongoing contamination but must strive to alleviate the effects of already present contamination while at the same time, eliminating as much as possible the continuing defilement being caused by the artifacts of modem civilization's technologies.
  • the instant invention has the potential and the capabilities to begin this very necessary environmental control labor and to continue to maintain a much lower level of air pollution. It is to be emphasized that contaminated ambient air is not the only fluid that may be filtered and thus purified by the methods and apparatus described. The purification of other gaseous and even of liquid fluids is also within the scope and contemplation of the instant invention.

Abstract

L'invention concerne un filtre de protection de l'environnement (10) pourvu d'un tuyau d'entrée de fluide (12) comprenant une entrée d'air forcé (16) traversant une coque extérieure (18) s'étendant axialement et pourvue d'un couvercle (20) d'extrémité proximale et d'un couvercle (22) d'extrémité distale. Le tuyau d'entrée (12) comprend un tuyau intérieur (32) pourvu de perforations (34). Une première chicane perforée (28) est suivie d'une seconde chicane imperméable (30), lesdites chicanes entourant le tuyau à perforations (32) qui traverse la coque extérieure (18). La coque extérieure (18) est remplie d'un matériau filtrant (36) placé entre ladite coque et le tuyau à perforation (32). Ledit tuyau à perforations (32) est pourvu d'éléments d'obturation (40), situés au même niveau que les chicanes perforées (28). Le filtre de protection de l'environnement (10) est pourvu d'un tuyau de sortie (8) qui s'étend depuis le couvercle d'extrémité distale (22).
PCT/US1992/007158 1992-08-24 1992-08-24 Purificateur a filtre pour systeme de protection de l'environnement WO1994004246A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
AU25853/92A AU2585392A (en) 1992-08-24 1992-08-24 Environmental control system filter purificator
PCT/US1992/007158 WO1994004246A1 (fr) 1992-08-24 1992-08-24 Purificateur a filtre pour systeme de protection de l'environnement

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/US1992/007158 WO1994004246A1 (fr) 1992-08-24 1992-08-24 Purificateur a filtre pour systeme de protection de l'environnement

Publications (1)

Publication Number Publication Date
WO1994004246A1 true WO1994004246A1 (fr) 1994-03-03

Family

ID=22231331

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1992/007158 WO1994004246A1 (fr) 1992-08-24 1992-08-24 Purificateur a filtre pour systeme de protection de l'environnement

Country Status (2)

Country Link
AU (1) AU2585392A (fr)
WO (1) WO1994004246A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1010451A1 (fr) * 1998-11-25 2000-06-21 BEGG, COUSLAND & CO. LTD. Ensemble filter en superposition
EP1338767A1 (fr) * 2002-02-21 2003-08-27 Johannes Ulrich Goertz Insert de silencieux préformé

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1833919A (en) * 1930-11-13 1931-12-01 Albert W Ginn Filter
US2956865A (en) * 1958-02-03 1960-10-18 John E Morris Exhaust gas purifier

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1833919A (en) * 1930-11-13 1931-12-01 Albert W Ginn Filter
US2956865A (en) * 1958-02-03 1960-10-18 John E Morris Exhaust gas purifier

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1010451A1 (fr) * 1998-11-25 2000-06-21 BEGG, COUSLAND & CO. LTD. Ensemble filter en superposition
EP1338767A1 (fr) * 2002-02-21 2003-08-27 Johannes Ulrich Goertz Insert de silencieux préformé

Also Published As

Publication number Publication date
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