EP2058246A1 - Dispositif de collecte de déchets - Google Patents

Dispositif de collecte de déchets Download PDF

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Publication number
EP2058246A1
EP2058246A1 EP08168667A EP08168667A EP2058246A1 EP 2058246 A1 EP2058246 A1 EP 2058246A1 EP 08168667 A EP08168667 A EP 08168667A EP 08168667 A EP08168667 A EP 08168667A EP 2058246 A1 EP2058246 A1 EP 2058246A1
Authority
EP
European Patent Office
Prior art keywords
storage compartment
waste collection
waste
vehicle
collection apparatus
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.)
Withdrawn
Application number
EP08168667A
Other languages
German (de)
English (en)
Inventor
Glynn Benson
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.)
Muni-Serv Ltd
Original Assignee
Muni-Serv Ltd
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 Muni-Serv Ltd filed Critical Muni-Serv Ltd
Publication of EP2058246A1 publication Critical patent/EP2058246A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65F—GATHERING OR REMOVAL OF DOMESTIC OR LIKE REFUSE
    • B65F3/00—Vehicles particularly adapted for collecting refuse
    • B65F3/14—Vehicles particularly adapted for collecting refuse with devices for charging, distributing or compressing refuse in the interior of the tank of a refuse vehicle
    • B65F3/18—Vehicles particularly adapted for collecting refuse with devices for charging, distributing or compressing refuse in the interior of the tank of a refuse vehicle with endless conveyors, e.g. elevators
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65F—GATHERING OR REMOVAL OF DOMESTIC OR LIKE REFUSE
    • B65F3/00—Vehicles particularly adapted for collecting refuse
    • B65F3/001—Vehicles particularly adapted for collecting refuse for segregated refuse collecting, e.g. vehicles with several compartments
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65F—GATHERING OR REMOVAL OF DOMESTIC OR LIKE REFUSE
    • B65F3/00—Vehicles particularly adapted for collecting refuse
    • B65F3/14—Vehicles particularly adapted for collecting refuse with devices for charging, distributing or compressing refuse in the interior of the tank of a refuse vehicle
    • B65F3/20—Vehicles particularly adapted for collecting refuse with devices for charging, distributing or compressing refuse in the interior of the tank of a refuse vehicle with charging pistons, plates, or the like
    • B65F3/201—Vehicles particularly adapted for collecting refuse with devices for charging, distributing or compressing refuse in the interior of the tank of a refuse vehicle with charging pistons, plates, or the like the charging pistons, plates or the like moving rectilinearly
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65F—GATHERING OR REMOVAL OF DOMESTIC OR LIKE REFUSE
    • B65F3/00—Vehicles particularly adapted for collecting refuse
    • B65F3/14—Vehicles particularly adapted for collecting refuse with devices for charging, distributing or compressing refuse in the interior of the tank of a refuse vehicle
    • B65F3/22—Vehicles particularly adapted for collecting refuse with devices for charging, distributing or compressing refuse in the interior of the tank of a refuse vehicle with screw conveyors, rotary tanks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65F—GATHERING OR REMOVAL OF DOMESTIC OR LIKE REFUSE
    • B65F3/00—Vehicles particularly adapted for collecting refuse
    • B65F3/24—Vehicles particularly adapted for collecting refuse with devices for unloading the tank of a refuse vehicle
    • B65F3/28—Vehicles particularly adapted for collecting refuse with devices for unloading the tank of a refuse vehicle by a lengthwise movement of a wall, e.g. a plate, a piston, or the like

Definitions

  • This invention relates to a waste collection apparatus, and in particular, but without limitation to a waste collection apparatus for use on waste collection vehicles.
  • Household and office waste is commonly left in bins outside premises for periodic collection by waste collection companies who transport the waste to disposal or recycling facilities for processing. In many situations, it is most efficient and/or economic for the waste collection companies to use a dedicated waste collection vehicle for this purpose.
  • waste collection vehicles are most often of the rear-loading type, and comprise a rear hopper into which waste is placed either by hand, or using specially designed bin handling machinery.
  • a compactor is normally provided in, or adjacent, the hopper to reduce the volume of the waste, thereby increasing the payload of the vehicle.
  • Various types of compactor can be used, for example: a moving plate compactor, which presses the waste against the base or an end wall of the hopper, or a screw compactor, which comprises an Archimedean screw of decreasing pitch and/or radius such that the waste is compacted as it moves along the screw.
  • the compactor also serves to move the compacted waste into a storage compartment of the vehicle.
  • waste can be continually added to the hopper and compacted into the storage compartment. Once the storage compartment is full, the vehicle can be driven to a waste processing facility and the rear hopper removed (e.g. lifted up or swung outwards) to enable the contents of the storage compartment to be ejected.
  • a waste collection apparatus comprising: a storage compartment; an inlet aperture communicating with the interior of the storage compartment; receiving means for receiving items; and conveyor means arranged, in use, to convey items from the receiving means to the inlet aperture, characterised by the inlet aperture being spaced-apart from the receiving means.
  • the weight of the items within the storage compartment helps to balance/offset the weight of the receiving means. This can give rise to a more even weight distribution.
  • the inlet aperture is located at, or towards, the opposite end of, the storage compartment to the receiving means.
  • the inlet aperture may be located at, or towards, an upper part of the storage compartment. Thus, items received by the receiving means can be conveyed up, and/or over, the storage compartment and deposited/dropped therein via the inlet aperture.
  • a cover means may be provided to cover the conveyor means and/or the inlet aperture.
  • the cover means where provided, may help to prevent items from being blown off the conveyor means by wind, and/or help to contain noise/smells within the apparatus.
  • the storage compartment may comprise a base, a front wall, a rear wall, sidewalls and a roof, and the inlet aperture may be located in the roof.
  • the conveyor means may comprise one or more conveyor belts.
  • the conveyor belt or belts may comprise an endless web arranged to pass over and/or be guided by one or more rollers.
  • the or each conveyor belt may comprise a series of lateral ribs or projections that help to prevent waste items from slipping relative to the conveyor belt. Where relatively deep ribs or projections are provided, they may, in conjunction with the web of the conveyor belt, define a plurality of mini-hoppers. Such a configuration may remove the need for a hopper, as such.
  • a part of the storage compartment and/or a part of the hopper is preferably manufactured of a lightweight material, such as a polymeric material and/or an aluminium alloy.
  • a lightweight material such as a polymeric material and/or an aluminium alloy.
  • the storage compartment may further comprise a closable outlet aperture, which may be provided in, or adjacent, a rear wall of the storage compartment.
  • the rear wall of the storage compartment may be removable and/or openable to form the closable outlet aperture.
  • the rear wall of the storage compartment may be hingedly connected to the base, top or side walls of the storage compartment.
  • the receiving means may comprise a loading area into which items can be placed to be conveyed to the inlet aperture.
  • the receiving means may comprise a hopper, which may comprise a generally open-topped receptacle having a base, sidewalls front and rear walls.
  • the front wall of the hopper may be integrally formed with the rear wall of the storage compartment.
  • the receiving means may comprise a conveyor belt onto which items can be placed.
  • the conveyor belt where provided may be located within a hopper.
  • a compaction means may be provided, which compaction means may be located within the storage compartment, and may be arranged to compact items located within the storage compartment.
  • the compaction means may comprise a plate, located within the storage compartment, movable between a first position and a second position. The first position may be located towards the front of the storage compartment and the second position may be located towards the rear of the storage compartment. The first and second positions may be located on opposite sides of the inlet aperture.
  • the plate may be connected to one or more actuators (e.g. motor-driven worm screws, and/or one or more rams) arranged, in use, to cause the plate to move forwards and/or backwards within the storage compartment.
  • actuators e.g. motor-driven worm screws, and/or one or more rams
  • the compactor may comprise an Archimedean screw.
  • the compactor may be slidably mounted so as to be slidable within and/or relative to the storage compartment.
  • the compactor may be slidable between first and second positions, e.g. forwards and backwards, within the storage compartment to effect/facilitate ejection of contents thereof, as will be described in detail below.
  • a vehicle comprising a waste collection apparatus as previously described.
  • the vehicle may be a waste collection vehicle.
  • a waste collection vehicle comprising: a waste storage compartment; an inlet aperture communicating with the interior of, the waste storage compartment; and a hopper for receiving waste items, characterised by the inlet aperture being located at, or toward, the front of, the storage compartment, the hopper being located at, or toward, the rear of the vehicle, and a conveyor belt arranged, in use, to convey waste items from the hopper into the waste storage compartment via the inlet aperture.
  • the vehicle may comprise two or more waste collection apparatuses.
  • Vehicles having two or more waste collection apparatuses can be useful where waste is sorted at source, e.g. into "recyclable” and “non-recyclable” bins, so that different categories of waste items do not need to be mixed up.
  • Such an arrangement allows single vehicle to collect different types of waste simultaneously, rather than having to make multiple trips to a single location.
  • the waste collection apparatus or apparatuses may be located at any position on the vehicle, although preferably at, or towards the rear of the vehicle, or between the driver's cab and the storage compartment.
  • a known refuse collection vehicle 10 comprises a chassis 12, wheels 13 and a drive-train (not shown) of conventional construction. Mounted to the chassis 12 are; a driver's cab 14 at the front of the vehicle 10; and a generally cuboid refuse storage compartment 16 at the rear of the vehicle 10.
  • the rear end wall 18 of the refuse storage compartment 16 comprises an inlet aperture 20 through which refuse items 22 can pass into the interior of the refuse storage compartment 16.
  • a hydraulically actuated compactor 24 is mounted to the rear of the refuse collection compartment 16 and overhangs the rear of the vehicle 10.
  • the compactor 24 comprises a curved base plate 26 manufactured of high strength steel and an articulated scraper 28, which is driven by hydraulic rams (not shown).
  • the curved base plate 26 forms part of a hopper, into which refuse items 22 can be placed.
  • the articulated scraper 28 moves from a retracted position, down into the hopper, and scrapes a lower edge thereof across the curved base plate and pushes the refuse items 22 through the inlet aperture 20 into the storage compartment 16.
  • the action of the scraper 28 serves two functions simultaneously, namely to crush the refuse items 22 within the hopper, and to transfer them into the storage compartment 16.
  • the weight distribution of the known vehicle is heavily biased towards the rear.
  • Arrows 32, 34 and 36 represent the reaction force of each wheel from the road: their relative sizes indicating the relative magnitudes of the reaction forces. Since the hopper, base plate 26 and scraper 28 are built from heavy materials; the hopper, base plate 26 and scraper 28 overhang the rear of the vehicle 10; and since refuse items 22 fill the compartment from rear towards the front, the weight distribution of the vehicle is strongly biased towards the rear driving wheels 13', with little weight being transmitted to the front, steering wheels 13".
  • a moveable refuse ejection plate 38 is provided within, and towards the front of, the refuse storage compartment 16.
  • the ejection plate 38 is moveably mounted on hydraulic rams 40, which can be extended to force the ejection plate 38 rearwards, and hence to push any refuse items 22 within the refuse storage compartment 16 out through either the inlet aperture 20, or a separate outlet aperture (not shown).
  • FIG. 2 shows, schematically, a first embodiment of a refuse collection vehicle 50 according to the invention, which is similar to the known refuse collection vehicle shown in Figure 1.
  • Figure 2 shows a refuse collection vehicle 50, comprising a chassis 12, wheels 13 and a drive-train (not shown) of conventional construction.
  • Mounted to the chassis 12 are: a driver's cab 14 at the front of the vehicle 50 and a generally cuboid refuse storage compartment 16 at the rear of the vehicle 50.
  • an inlet aperture 20 is provided in the roof 52, rather than the rear end wall, of the refuse storage compartment 16.
  • a hopper 54 which is of relatively lightweight construction, overhangs the rear of the vehicle 50. Located within the hopper are horizontal 56 and inclined 58 conveyor belts. A third, horizontal conveyor belt 60 passes over the roof of the storage compartment 16 and terminates above the inlet aperture 20.
  • the hopper 54 Since, in use, refuse items are placed on conveyor belts 56 and 58, it is not necessary for the hopper 54 itself to be manufactured particularly robustly.
  • the hopper 54 is manufactured of moulded Glass Reinforced Plastic (GRP) since it merely serves as a cowling for the conveyor belts 56, 58, and has no real load-bearing function.
  • GRP Glass Reinforced Plastic
  • a cover 62 is also provided over the third conveyor belt 60 to prevent refuse items from being blown off the conveyor belt 60 in high winds and to prevent foreign objects from inadvertently/accidentally falling into the refuse storage compartment 16 via the inlet aperture 20.
  • the cover 62 is manufactured of a laminated GRP - polymer foam - GRP material which is lightweight, relatively stiff and exhibits good sound insulation properties. By surrounding the inlet aperture 20 with a sound-insulated cover 62, the noise emissions of the vehicle 50 can be reduced significantly.
  • a moveable refuse compaction and ejection plate 64 is provided within, and towards the front of, the refuse storage compartment 16.
  • the compaction and ejection plate 64 is moveably mounted on hydraulic rams 40, which can be extended to force the compaction and ejection plate 64 rearwards, and hence to push and compress any refuse items 22 within the refuse storage against the rear end wall 18 of the refuse storage compartment 16.
  • the rear-end wall 18 of the refuse storage compartment 16 is integral with the front wall of the hopper 54
  • FIG. 3 The series of schematic illustrations forming Figures 3 to 7 show the refuse collection vehicle 50 of Figure 2 in use.
  • an operator places refuse items 22 onto the horizontal conveyor belt 56 within the hopper 54.
  • the refuse items 22 are transferred by the conveyor belts 56, 56, 60 up and over the roof 52 of the storage compartment 16.
  • the refuse items 22 reach the end of the horizontal conveyor belt 60, they drop into the refuse storage compartment 16 via the inlet aperture 20.
  • the weight of the hopper 54 is relatively low, and since the refuse items are loaded into vehicle between the front 13" and rear 13' wheels, the weight of the vehicle, as indicated by reaction force arrows 32, 34 and 36 is relatively evenly distributed.
  • the hopper 54, horizontal 56 and inclined conveyor belts 58, and rear wall of the storage compartment 18 form a loading unit 70 that is hingedly connected to the vehicle 50.
  • the loading unit 70 can be hinged upwards to expose the waste items 22 within the storage compartment 16, whereupon the compaction and ejection plate 64 can move rearwards to push the refuse items 22 out through the open end of the refuse storage compartment 16.
  • the loading unit 70 is lowered and the compaction and ejection plate 64 moved forwards to enable the vehicle 50 to be re-loaded.
  • Figure 8 shows a second embodiment of waste collection vehicle according to the invention comprising two waste collection apparatuses mounted side-by-side on the vehicle.
  • the waste collection apparatuses are of equal sizes giving rise to a 50:50 split, although one waste collection apparatus may be wider than the other to give a different split, e.g. a 60:40 or a 70:30 split.
  • FIG 8 Also shown in Figure 8 are a series of lateral ribs 72 on the conveyor belt 58 that help to prevent waste items from slipping down the conveyor belt 58. Since the ribs 72 are quite deep, they, in conjunction with the web of the conveyor belt 58, define mini-hoppers thereby removing the need for a horizontal conveyor belt (56) as shown in Figures 2 to 7 .
  • the loading unit 70 does not significantly overhang the rear wheels 13' of the vehicle 50.
  • Figure 9 shows a third embodiment of a waste collection vehicle according to the invention in which the loading unit 70 is placed between the driver's cab and the storage compartment.
  • the loading unit 70 places the weight of the loading unit 70 between the front 13" and rear wheels 13' of the vehicle to more evenly distribute the vehicle's weight.
  • Such a configuration also enables an operator (not shown) to walk alongside the vehicle 50, e.g. on the pavement (sidewalk) to load it, rather than having to walk in the road behind the vehicle 50.
  • the refuse collection vehicle 74 which is similar to the refuse collection vehicle shown in Figure 2 , comprises a chassis 12, wheels 13 and a drive-train (not shown) of conventional construction. Mounted to the chassis 12 are a driver's cab 14 at the front of the vehicle 74 and a generally cuboid, refuse storage compartment 16 at the rear of the vehicle 74. An inlet aperture 20 is provided in the roof 52 of the refuse storage compartment 16.
  • a hopper 54 which is of relatively lightweight construction, overhangs the rear of the vehicle 74.
  • An inclined conveyor belt 58 Located within the hopper 54 is an inclined conveyor belt 58.
  • a horizontal conveyor belt 60 passes over the roof of the storage compartment 16 and terminates above the inlet aperture 20.
  • the hopper 54 Since, in use, refuse items are placed on the inclined conveyor belt 58, it is not necessary for the hopper 54 itself to be manufactured particularly robustly.
  • the hopper 54 is manufactured of moulded Glass Reinforced Plastic (GRP) since it merely serves as a cowling for the inclined conveyor belt 58, and has no real load-bearing function.
  • GRP Glass Reinforced Plastic
  • a cover 62 is also provided above the horizontal conveyor belt 60 to prevent refuse items 22 from being blown off the conveyor belt 60 in high winds and to prevent foreign objects from inadvertently/accidentally falling into the refuse storage compartment 16 via the inlet aperture 20.
  • a moveable refuse compactor 76 is provided within, and towards the front of, the refuse storage compartment 16.
  • the compactor comprises a relatively forward, inclined guide plate 75 and a relatively rearward curved, inclined guide plate 77 that, together with the sidewalls of the refuse storage compartment 16 define a box into which refuse items 22 from the inlet aperture 20 are received.
  • a compactor 40 Located at the bottom of the box is a compactor 40, which comprises a ram or Archimedean screw that compacts and forces refuse items 22 rearwards into the main body of the refuse storage compartment 16.
  • the compactor 76 advantageously enables refuse items to be continuously added thereto whilst compaction is taking place.
  • the refuse items 22 are loaded into the relatively forward end of the storage compartment 16, and the compactor 76 is located between the front 13" and rear wheels 13' of the vehicle 74 thereby more evenly distributing the weight of the vehicle 74.
  • refuse items 22 are loaded onto the inclined conveyor belt 58 and are conveyed up and over the storage compartment by the conveyor belts 58 & 60, whereupon they drop into the compactor 76 via the inlet aperture 20.
  • the compactor 76 is not used to eject the contents 22 of the storage compartment 16: ejection being effected instead by a separate ejector mechanism 78.
  • the ejector mechanism 78 comprises a system of tracks 80 mounted on the base wall of the storage compartment 16 upon which the compactor 76 is able to slide on rollers (not shown).
  • An ejector ram 88 is cooperates with the front wall 15 of the storage compartment 16 and a relatively forward part (i.e. the front wall 15, 75) of the compactor 76. By extending and retracting the ejector ram 88, the compactor 76 can be slid forwards and backwards, in its entirely, within the storage compartment 16.
  • an operator places refuse items 22 onto the inclined conveyor belt 58 within the hopper 54.
  • the refuse items 22 are transferred by the conveyor belts 58, 60 up and over the roof 52 of the storage compartment 16 and when the refuse items 22 reach the end of the horizontal conveyor belt 60, they drop into the compactor 76 via the inlet aperture 20.
  • Compaction of the refuse items 22 is effected using the ram 40 of the compactor 76 in a manner analogous to that described with reference to Figures 3 to 7 above.
  • the rear wall 18 of the storage compartment 16 comprises a hinged door that can be opened to permit the contents 22 of the storage compartment 16 to be ejected.
  • the rear wall 18 and the inclined conveyor belt 58 are lowered, and the ejector ram 88 retracted to pull the compactor 76 towards the front of the storage compartment 16 to enable the vehicle 50 to be re-loaded.
  • the invention is not limited to the details of the foregoing embodiments.
  • the shape and configuration of the vehicle may be adapted for different purposes, the position of the inlet aperture need not be towards the front of the storage compartment and the compactor need not be of the sliding plate type.
EP08168667A 2007-11-07 2008-11-07 Dispositif de collecte de déchets Withdrawn EP2058246A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB0721848A GB2454479A (en) 2007-11-07 2007-11-07 Waste collection apparatus

Publications (1)

Publication Number Publication Date
EP2058246A1 true EP2058246A1 (fr) 2009-05-13

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ID=38858295

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08168667A Withdrawn EP2058246A1 (fr) 2007-11-07 2008-11-07 Dispositif de collecte de déchets

Country Status (2)

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EP (1) EP2058246A1 (fr)
GB (1) GB2454479A (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019153066A1 (fr) * 2018-02-09 2019-08-15 Gestion Claude Boivin Inc. Panneau d'éjection traversant à bandes
CN110422289A (zh) * 2019-08-07 2019-11-08 苏州飞驰环保科技股份有限公司 存储舱具备压缩和减容功能的水面清洁船
CN113481912A (zh) * 2019-06-26 2021-10-08 成秀东 智能道路清洁方法

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104909100A (zh) * 2014-03-16 2015-09-16 张鹏镇 一种压缩垃圾运输车
CN106927178A (zh) * 2014-06-24 2017-07-07 张鹏镇 一种简单节能式压缩垃圾运输车
ES2556275A1 (es) * 2014-07-11 2016-01-14 Valoriza Servicios Medioambientales, S.A. Sistema para retirada de residuos sólidos urbanos
CN112849857B (zh) * 2020-12-31 2022-04-12 福建龙马环境产业有限公司 一种用于收集大件垃圾的智能环卫车

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1292412A (fr) * 1961-03-24 1962-05-04 Dispositif amovible de chargement continu pour camion de voirie
WO1991003411A1 (fr) * 1989-08-30 1991-03-21 Quality Installations Pty. Ltd. Appareil de manipulation d'un chargement

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2565437A (en) * 1949-06-23 1951-08-21 Ernest C C Miller Removable headshaft assembly for refuse vehicles
US2800237A (en) * 1954-05-06 1957-07-23 Kutscha Alois Self-loading and unloading refuse vehicle body
AU682530B2 (en) * 1993-10-04 1997-10-09 Patents4Us Pty Ltd Container and waste transfer mechanism assembly

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1292412A (fr) * 1961-03-24 1962-05-04 Dispositif amovible de chargement continu pour camion de voirie
WO1991003411A1 (fr) * 1989-08-30 1991-03-21 Quality Installations Pty. Ltd. Appareil de manipulation d'un chargement

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019153066A1 (fr) * 2018-02-09 2019-08-15 Gestion Claude Boivin Inc. Panneau d'éjection traversant à bandes
US11407586B2 (en) 2018-02-09 2022-08-09 The Heil Co. Pack through eject panel
CN113481912A (zh) * 2019-06-26 2021-10-08 成秀东 智能道路清洁方法
CN110422289A (zh) * 2019-08-07 2019-11-08 苏州飞驰环保科技股份有限公司 存储舱具备压缩和减容功能的水面清洁船

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Publication number Publication date
GB2454479A (en) 2009-05-13
GB0721848D0 (en) 2007-12-19

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