EP0156667B1 - Blast cleaning apparatus for buildings - Google Patents

Blast cleaning apparatus for buildings Download PDF

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Publication number
EP0156667B1
EP0156667B1 EP85400256A EP85400256A EP0156667B1 EP 0156667 B1 EP0156667 B1 EP 0156667B1 EP 85400256 A EP85400256 A EP 85400256A EP 85400256 A EP85400256 A EP 85400256A EP 0156667 B1 EP0156667 B1 EP 0156667B1
Authority
EP
European Patent Office
Prior art keywords
cabin
front face
axis
solid particles
air
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
Application number
EP85400256A
Other languages
German (de)
French (fr)
Other versions
EP0156667A1 (en
Inventor
Chantal Thomann
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
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Filing date
Publication date
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Application filed by Individual filed Critical Individual
Priority to AT85400256T priority Critical patent/ATE34591T1/en
Publication of EP0156667A1 publication Critical patent/EP0156667A1/en
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Expired legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G23/00—Working measures on existing buildings
    • E04G23/002—Arrangements for cleaning building facades
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
    • B24C3/00—Abrasive blasting machines or devices; Plants
    • B24C3/02—Abrasive blasting machines or devices; Plants characterised by the arrangement of the component assemblies with respect to each other
    • B24C3/06—Abrasive blasting machines or devices; Plants characterised by the arrangement of the component assemblies with respect to each other movable; portable
    • B24C3/062—Abrasive blasting machines or devices; Plants characterised by the arrangement of the component assemblies with respect to each other movable; portable for vertical surfaces

Definitions

  • the installation of the invention is characterized in that it comprises an intermediate partition parallel to the open front face and provided with air suction fans, a rear lateral face. provided with air exhaust openings, the filtering panel being arranged parallel to and between the intermediate wall and the cioisorratDère 'the open front face being provided with a surround which projects outside of the cabin with respect to this front face, this surround being made of flexible material has on a frame made up of inflatable tubes.
  • the openings in the rear side face are provided with panels inclined upwards and outwards from the cabin.
  • the cabin is supported by the end of the lifting arm of a lifting machine, the connection of the cabin to the arm being produced by a rotational mounting of the cabin along a vertical axis XX parallel to the front face and by a pivoting assembly along a horizontal axis perpendicular to the axis XX and to the axis of the lifting arm.
  • the installation shown in the drawings essentially comprises a cabin 1, for example made of aluminum sheet, which is provided with an open front side face 2.
  • This front face is intended to be placed opposite the wall of the building to be cut down so that the workers placed on the floor 3 can project onto the building using a nozzle, solid particles conveyed by air under pressure.
  • These particles consist of dry silica powder whose dimensions are between 1 and 70 microns, so that effective cleaning of the building can be carried out quickly, without damaging its facade.
  • This intermediate partition 4 is provided with a battery of fans 5 which are intended to 'suck in the air located in the front zone 2 1 and which contains suspended particles of silica powder in order to project this air onto a filter panel 6 arranged parallel and behind the partition 4.
  • the rear lateral face 7 of the cabin is provided with openings 7 1 .
  • On the lower edge of these openings are fixed panels 8 which are inclined towards the outside and towards the top of the cabin in order to constitute deflectors preventing the air sucked in by the fans 5 and which has passed through the filtering panel 6 from being projected horizontally outside the cabin.
  • each fan 5 opens a tube 9 1 for spraying water, while on the upper edge of the front face of the filter panel 6 there is also a ramp 9 2 for spraying water.
  • the pipes 9 1 by projecting water onto the blades of the fans, have the effect of humidifying the air and the solid particles aspirated so that these particles are deposited against the front face of the filter panel 6.
  • the water flowing from the ramp 9 2 against the panel 6 constantly washes the front face of this panel so that the mixture of water and particles is recovered in a hopper 10 forming the underside of the cabin, then discharged by a conduit 11.
  • the tubing 9 1 and the ramp 9 2 are supplied with pressurized water by a flexible pipe 12.
  • the open front face 2 of the cabin is provided with an surround 13 made using a flexible material 13 1 such as a tarpaulin, mounted on a frame 13 2 made using inflatable tubes by l 'air.
  • a flexible material 13 1 such as a tarpaulin
  • This surround thus comprises a front peripheral flange 13 3 and flanges 13 4 which connect the flange 13 3 to the periphery of the front face 2.
  • the cabin 1 is supported at the end of the lifting arm 14 of a lifting machine.
  • the connection between the cabin and the arm comprises two concentric tubes 15 and 16, one of which, 15, is fixed to the base of the hopper 10 and the other of which, 16, is fixed to a pivoting yoke 17, by the intermediate an axis 18, on the arm 14.
  • the outer tube 15 comprises at its base a toothed wheel 15 1 with which meshes an endless screw 15 2 driven by a hydraulic motor 15 3 .
  • the concentric tubes 15 and 16 therefore constitute a rotational mounting of the cabin along a vertical axis XX parallel to the front face 2 of the cabin.
  • the pivot axis 18 is perpendicular to the axis XX and to the axis 14 1 of the lifting arm 14.
  • the pivoting of the yoke 17 is ensured by a hydraulic cylinder 19 so as to be able to modify the inclination of the cabin and, also, so as to be able to place this cabin horizontally in the extension of the arm 14 when moving hoist.
  • the rotation of the tubes 15 and 16 relative to each other using the motor 15 3 makes it possible to modify the orientation of the cabin so as to have the face 2 facing the building to be swallowed without being obliged to modify the position of the lifting device.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Cleaning In General (AREA)
  • Ventilation (AREA)
  • Sewage (AREA)
  • Detergent Compositions (AREA)
  • Filtering Of Dispersed Particles In Gases (AREA)
  • Working Measures On Existing Buildindgs (AREA)
  • Optical Communication System (AREA)
  • Control Of Motors That Do Not Use Commutators (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
  • Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Buildings Adapted To Withstand Abnormal External Influences (AREA)
  • Building Environments (AREA)

Abstract

(a) An installation for cleaning buildings by the blasting of solid particles; (b) characterised in that it comprises a cabin (1) having: an open front surface (2), an intermediate wall (4) having fans (5); a floor (3); a lateral surface (7) at the rear formed with air discharge apertures (71); a filter panel (6) disposed between the intermediate wall (4) and the rear wall; a substantially funnel-shaped bottom surface (10) having a discharge duct (11) for the solid particles collected by the filter panel (6); and a housing (13) extending around the open front surface (2) and projecting therebeyond outside the cabin and made of a flexible material (131) disposed on a framework (132) of inflatable tubes (133, 134).

Description

Une installation selon le préambule de la revendication 1 est décrite dans le brevet français No 1 414 659. Suivant ce brevet, l'installation assure le ravalement des bâtiments par la projection, à l'aide de buse, de particules solides véhiculées par un fluide sous pression, cette installation comprenant une cabine présentant une face avant ouverte destinée à être disposée contre le bâtiment à ravaler, un plancher pour le support des ouvriers, une face arrière pourvue d'un ventilateur aspirant l'air de la zone de la face avant, un panneau filtrant faisant suite au ventilateur et une trémie pourvue d'un conduit d'évacuation des particules solides recueillies par le panneau filtrant.An installation according to the preamble of claim 1 is described in French patent No 1 414 659. According to this patent, the installation ensures the restoration of buildings by the projection, using a nozzle, of solid particles conveyed by a fluid under pressure, this installation comprising a cabin having an open front face intended to be placed against the building to be swallowed up, a floor for the support of the workers, a rear face provided with a fan sucking air from the area of the front face , a filter panel following the fan and a hopper provided with a conduit for discharging the solid particles collected by the filter panel.

Vis-à-vis de cette disposition connue, l'installation de l'invention est caractérisée en ce qu'elle comporte une cloison intermédiaire parallèle à la face avant ouverte et pourvue de ventilateurs d'aspiration de l'air, une face latérale arrière pourvue d'ouvertures d'évacuation d'air, le panneau filtrant étant disposé parallèlement à et entre la cloison intermédiaire et la cioisorratDère, ' la face avant ouverte étant pourvue d'un entourage faisant saillie à l'extérieur de la cabine par rapport à cette face avant, cet entourage étant réalisé en matériau souple dispose sur une ossature constituée de boudins gonflables.With respect to this known arrangement, the installation of the invention is characterized in that it comprises an intermediate partition parallel to the open front face and provided with air suction fans, a rear lateral face. provided with air exhaust openings, the filtering panel being arranged parallel to and between the intermediate wall and the cioisorratDère 'the open front face being provided with a surround which projects outside of the cabin with respect to this front face, this surround being made of flexible material has on a frame made up of inflatable tubes.

Suivant une autre caractéristique de l'invention, les ouvertures de la face latérale arrière sont pourvues de panneaux inclinés vers le haut et vers l'extérieur de la cabine.According to another characteristic of the invention, the openings in the rear side face are provided with panels inclined upwards and outwards from the cabin.

Suivant une autre caractéristique de l'invention, la cabine est supportée par l'extrémité du bras de levage d'un engin de levage, la liaison de la cabine au bras étant réalisée par un montage à rotation de la cabine suivant un axe vertical X-X parallèle à la face avant et par un montage à pivotement suivant un axe horizontal perpendiculaire à l'axe X-X et à l'axe du bras de levage.According to another characteristic of the invention, the cabin is supported by the end of the lifting arm of a lifting machine, the connection of the cabin to the arm being produced by a rotational mounting of the cabin along a vertical axis XX parallel to the front face and by a pivoting assembly along a horizontal axis perpendicular to the axis XX and to the axis of the lifting arm.

L'invention est représentée à titre d'exempte non limitatif sur les dessins ci-joints dans lesquels:

  • - la figure 1 est une vue en coupe verticale schématique de l'installation,
- la figure 2 est une vue de droite de la figure 1.The invention is shown by way of non-limiting example in the accompanying drawings in which:
  • FIG. 1 is a schematic vertical section view of the installation,
- Figure 2 is a right view of Figure 1.

L'installation représentée sur les dessins comprend essentiellement une cabine 1, par exemple en tôle d'aluminium, qui est pourvue d'une face latérale avant 2 ouverte. Cette face avant est destinée à se placer en regard de la paroi du bâtiment à ravaler afin que les ouvriers disposés sur le plancher 3 puissent projeter sur le bâtiment à l'aide d'une buse, des particules solides véhiculées par de l'air sous pression.The installation shown in the drawings essentially comprises a cabin 1, for example made of aluminum sheet, which is provided with an open front side face 2. This front face is intended to be placed opposite the wall of the building to be cut down so that the workers placed on the floor 3 can project onto the building using a nozzle, solid particles conveyed by air under pressure.

Ces particules sont constituées par de la poudre de silice sèche dont les dimensions sont comprises entre 1 et 70 microns, de façon à pouvoir effectuer rapidement un nettoyage efficace du bâtiment, sans détérioration de sa façade.These particles consist of dry silica powder whose dimensions are between 1 and 70 microns, so that effective cleaning of the building can be carried out quickly, without damaging its facade.

A l'intérieur de la cabine 1 est prévue une cloison verticale intermédiaire 4 parallèle à la face avant 2 et séparée de cette face avant par le plancher 3. Cette cloison intermédiaire 4 est pourvue d'une batterie de ventilateurs 5 qui ont pour but d'aspirer l'air situé dans la zone avant 21 et qui contient en suspension des particules de poudre de silice afin de projeter cet air sur un panneau filtrant 6 disposé parallèlement et derrière la cloison 4.Inside the cabin 1 is provided an intermediate vertical partition 4 parallel to the front face 2 and separated from this front face by the floor 3. This intermediate partition 4 is provided with a battery of fans 5 which are intended to 'suck in the air located in the front zone 2 1 and which contains suspended particles of silica powder in order to project this air onto a filter panel 6 arranged parallel and behind the partition 4.

La face latérale arrière 7 de la cabine est pourvue d'ouvertures 71. Sur le bord inférieur de ces ouvertures sont fixés des panneaux 8 qui sont inclinés vers l'extérieur et vers le haut de la cabine afin de constituer des déflecteurs évitant que l'air aspiré par les ventilateurs 5 et qui a traversé le panneau filtrant 6 soit projeté horizontalement à l'extérieur de la cabine.The rear lateral face 7 of the cabin is provided with openings 7 1 . On the lower edge of these openings are fixed panels 8 which are inclined towards the outside and towards the top of the cabin in order to constitute deflectors preventing the air sucked in by the fans 5 and which has passed through the filtering panel 6 from being projected horizontally outside the cabin.

Devant chaque ventilateur 5 débouche une tubulure 91 de projection d'eau, tandis que sur le bord supérieur de la face avant du panneau filtrant 6 il est également prévu une rampe 92 de projection d'eau.Before each fan 5 opens a tube 9 1 for spraying water, while on the upper edge of the front face of the filter panel 6 there is also a ramp 9 2 for spraying water.

Les tubulures 91 en projetant de l'eau sur les pales des ventilateurs, ont pour effet d'humidifier l'air et les particules solides aspirées afin que ces particules se déposent contre la face avant du panneau filtrant 6. Ensuite, l'eau qui s'écoule de la rampe 92 contre le panneau 6 lave en permanence la face avant de ce panneau afin que le mélange d'eau et de particules soit récupéré dans une trémie 10 formant la face inférieure de la cabine, puis évacué par un conduit 11.The pipes 9 1 by projecting water onto the blades of the fans, have the effect of humidifying the air and the solid particles aspirated so that these particles are deposited against the front face of the filter panel 6. Next, the water flowing from the ramp 9 2 against the panel 6 constantly washes the front face of this panel so that the mixture of water and particles is recovered in a hopper 10 forming the underside of the cabin, then discharged by a conduit 11.

La tubulure 91 et la rampe 92 sont alimentées en eau sous pression par une canalisation souple 12.The tubing 9 1 and the ramp 9 2 are supplied with pressurized water by a flexible pipe 12.

La face avant ouverte 2 de la cabine est pourvue d'un entourage 13 réalisé à l'aide d'un matériau souple 131 tel qu'une bâche, monté sur une ossature 132 réalisée à l'aide de boudins gonflables par de l'air.The open front face 2 of the cabin is provided with an surround 13 made using a flexible material 13 1 such as a tarpaulin, mounted on a frame 13 2 made using inflatable tubes by l 'air.

Cet entourage comprend ainsi un boudin périphérique avant 133 et des boudins 134 qui relient le boudin 133 à la périphérie de la face avant 2.This surround thus comprises a front peripheral flange 13 3 and flanges 13 4 which connect the flange 13 3 to the periphery of the front face 2.

La cabine 1 est supportée à l'extrémité du bras de levage 14 d'un engin de levage. La liaison entre la cabine et le bras comprend deux tubes concentriques 15 et 16 dont l'un, 15, est fixé à la base de la trémie 10 et dont l'autre, 16, est fixé sur une chape 17 pivotante, par l'intermédiaire d'un axe 18, sur le bras 14. Le tube extérieur 15 comporte à sa base une roue dentée 151 avec laquelle engrène une vis sans fin 152 entraînée par un moteur hydraulique 153. Les tubes concentriques 15 et 16 constituent donc un montage à rotation de la cabine suivant un axe vertical X-X parallèle à la face avant 2 de la cabine. L'axe de pivotement 18 est perpendiculaire à l'axe X-X et à l'axe 141 du bras de levage 14.The cabin 1 is supported at the end of the lifting arm 14 of a lifting machine. The connection between the cabin and the arm comprises two concentric tubes 15 and 16, one of which, 15, is fixed to the base of the hopper 10 and the other of which, 16, is fixed to a pivoting yoke 17, by the intermediate an axis 18, on the arm 14. The outer tube 15 comprises at its base a toothed wheel 15 1 with which meshes an endless screw 15 2 driven by a hydraulic motor 15 3 . The concentric tubes 15 and 16 therefore constitute a rotational mounting of the cabin along a vertical axis XX parallel to the front face 2 of the cabin. The pivot axis 18 is perpendicular to the axis XX and to the axis 14 1 of the lifting arm 14.

Le pivotement de la chape 17 est assuré par un vérin hydraulique 19 de façon à pouvoir modifier l'inclinaison de la cabine et, également, de façon à pouvoir placer cette cabine horizontalement dans le prolongement du bras 14 lors du déplacement de l'engin de levage. La rotation des tubes 15 et 16 l'un par rapport à l'autre à l'aide du moteur 153 permet de modifier l'orientation de la cabine pour disposer la face 2 en regard du bâtiment à ravaler sans être obligé de modifier la position de l'engin de levage.The pivoting of the yoke 17 is ensured by a hydraulic cylinder 19 so as to be able to modify the inclination of the cabin and, also, so as to be able to place this cabin horizontally in the extension of the arm 14 when moving hoist. The rotation of the tubes 15 and 16 relative to each other using the motor 15 3 makes it possible to modify the orientation of the cabin so as to have the face 2 facing the building to be swallowed without being obliged to modify the position of the lifting device.

Claims (7)

1. Apparatus for blast-cleaning buildings by blasting, with the aid of nozzles, solid particles which are carried by a fluid under pressure, said apparatus comprising a cabin (1) with an open front face (2) adapted to be placed against the building to be blast-cleaned, a floor (3) which supports the workmen, a rear face (7) provided with a fan (5) which sucks air from the zone (21) of the front face (2), a filtering panel (6) which follows the fan (5), and a hopper (10) provided with a conduit (11) for removal of the solid particles collected by the filtering panel (6), said apparatus being characterised in that it comprises an intermediate partition wall (4) parallel to the open front face (2) and provided with fans (5) for sucking air in, a lateral rear face (7) provided with openings (71) for the removal of air, the filtering panel (6) being arranged parallel to and between the intermediate partition wall and the rear wall, the open front face being provided with a surround (13) which projects towards the outside of the cabin (1) in relation to said front face, said surround being made of flexible material (13,) and being arranged on a framework (132) consisting of inflatable cylinder-shaped members (133, 134).
2. Apparatus according to claim 1, characterised in that the openings of the lateral rear face (7) are provided with panels (8) which slope upwardly and towards the outside of the cabin.
3. Apparatus according to claim 1, characterised in that the cabin (1) is supported by the end of the lifting arm (14) of a lifting gear, the connection of the cabin to the arm being effected in that the cabin is mounted rotatably along a vertical axis X-X parallel to the front face (2) and is mounted pivotably along a horizontal axis (18) which is perpendicular to the axis X-X and to the axis (141) of the lifting arm.
4. Apparatus according to claim 3, characterised in that the rotating mounting comprises two concentric tubes (15, 16) mounted rotatably, one (15) being fixed to the cabin and the other (16) being fixed to the lifting arm (14) by means of a bearing (17) which is provided with the horizontal pivoting axis (18).
5. Apparatus according to any one of the preceding claims, characterised in that the solid particles blasted by the air under pressure consist of dry silica powder whose granular size is between 1 and 70 microns.
6. Apparatus according to claim 1, characterised in that water blasting tubes open into the fans on their side which sucks in.
7. Apparatus according to claim 1, characterised in that a water flow slope is provided on the upper edge of the front surface of the filtering panel (6).
EP85400256A 1984-02-29 1985-02-14 Blast cleaning apparatus for buildings Expired EP0156667B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT85400256T ATE34591T1 (en) 1984-02-29 1985-02-14 PRESSURE CLEANING DEVICE FOR BUILDINGS.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8403171A FR2560262B1 (en) 1984-02-29 1984-02-29 INSTALLATION FOR BUILDING DOWN BUILDINGS
FR8403171 1984-02-29

Publications (2)

Publication Number Publication Date
EP0156667A1 EP0156667A1 (en) 1985-10-02
EP0156667B1 true EP0156667B1 (en) 1988-05-25

Family

ID=9301557

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85400256A Expired EP0156667B1 (en) 1984-02-29 1985-02-14 Blast cleaning apparatus for buildings

Country Status (11)

Country Link
US (1) US4649672A (en)
EP (1) EP0156667B1 (en)
AT (1) ATE34591T1 (en)
BR (1) BR8500868A (en)
CA (1) CA1254706A (en)
DE (1) DE3562932D1 (en)
EG (1) EG17618A (en)
ES (1) ES8607460A1 (en)
FR (1) FR2560262B1 (en)
GR (1) GR850452B (en)
PT (1) PT80022B (en)

Families Citing this family (12)

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Publication number Priority date Publication date Assignee Title
DE3629623A1 (en) * 1986-08-30 1988-03-03 Schlick Roto Jet Masch DEVICE FOR CLEANING SURFACES OF LARGE-SIZED OBJECTS WITH A MOVABLE BEAM BASKET
FR2622619B1 (en) * 1987-11-03 1992-09-04 Thomann Gabrielle CABIN FOR RAVALING BUILDING FACADES
US5011710A (en) * 1988-11-10 1991-04-30 Harrison John F Bridge maintenance method and equipment
JP2529431B2 (en) * 1990-02-09 1996-08-28 大陽酸素株式会社 Cleaning equipment
BR9204236A (en) * 1992-10-30 1994-05-03 Petroleo Brasileiro Sa Particulate material collecting system for coir blasting operation
US5291695A (en) * 1992-11-04 1994-03-08 Blastco Corporation Scaffolding with enclosed movable work areas sealed against work surfaces
US5427199A (en) * 1993-04-22 1995-06-27 Interstate Coatings Inc. Self-propelled work platform and containment enclosure
EP0642888B1 (en) * 1993-09-07 2000-01-26 Conchita Holding S.A. Sand-blasting device
LU88407A1 (en) * 1993-09-13 1995-04-05 Antonio Frezzella Process and installation with closed circuit automatically for the non-polluting leveling of monuments and buildings
FR2730651B1 (en) * 1995-02-16 1997-05-09 Union De Services Publics DEVICE FOR CLEANING A CURVED SURFACE AND VEHICLE THUS EQUIPPED
US5688323A (en) * 1995-11-13 1997-11-18 Interstate Coatings, Inc. Spray containment and enclosure assembly
ITMO20100263A1 (en) * 2010-09-21 2012-03-22 Vincenzo Rina EQUIPMENT FOR PAINTING HULLS OF NAVAL OR SIMILAR VESSELS

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2729918A (en) * 1954-04-06 1956-01-10 William N Van Denburgh Blast cleaning apparatus
FR1414659A (en) * 1964-11-26 1965-10-15 Process in particular for the renovation and cleaning of building facades as well as the devices and installation for the implementation of the present process or similar process
FR1557648A (en) * 1966-07-16 1969-01-13
US3407538A (en) * 1966-08-29 1968-10-29 Anthony E. Codina Sandblaster for floors
US3522000A (en) * 1967-09-06 1970-07-28 Chillum Sheet Metal Inc Method and apparatus for cooling and purifying gaseous products of combustion
NL7209486A (en) * 1971-07-09 1973-01-11
US4020596A (en) * 1974-11-11 1977-05-03 Wheelabrator-Frye, Inc. Convertible blast cleaning unit
JPS5234496A (en) * 1975-09-12 1977-03-16 Mitsui Eng & Shipbuild Co Ltd Sandblast machine for surface portion at curved side
US4181821A (en) * 1978-10-31 1980-01-01 Bell Telephone Laboratories, Incorporated Multiple template speech recognition system
GB2099329A (en) * 1981-05-29 1982-12-08 Coal Industry Patents Ltd Dust filter apparatus

Also Published As

Publication number Publication date
BR8500868A (en) 1985-10-15
US4649672A (en) 1987-03-17
ES541342A0 (en) 1986-05-16
ES8607460A1 (en) 1986-05-16
GR850452B (en) 1985-06-21
ATE34591T1 (en) 1988-06-15
FR2560262B1 (en) 1986-08-22
EP0156667A1 (en) 1985-10-02
FR2560262A1 (en) 1985-08-30
PT80022B (en) 1987-05-29
PT80022A (en) 1985-03-01
CA1254706A (en) 1989-05-30
DE3562932D1 (en) 1988-06-30
EG17618A (en) 1990-06-30

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PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

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17P Request for examination filed

Effective date: 19851220

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