US3708208A - System for selective distribution of light weight materials - Google Patents

System for selective distribution of light weight materials Download PDF

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Publication number
US3708208A
US3708208A US00086112A US3708208DA US3708208A US 3708208 A US3708208 A US 3708208A US 00086112 A US00086112 A US 00086112A US 3708208D A US3708208D A US 3708208DA US 3708208 A US3708208 A US 3708208A
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Prior art keywords
outlet
hopper
light weight
conduit means
distribution
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US00086112A
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English (en)
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G Fuss
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Free Flow Packaging Corp
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Free Flow Packaging Corp
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G53/00—Conveying materials in bulk through troughs, pipes or tubes by floating the materials or by flow of gas, liquid or foam
    • B65G53/34—Details
    • B65G53/60—Devices for separating the materials from propellant gas
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G53/00—Conveying materials in bulk through troughs, pipes or tubes by floating the materials or by flow of gas, liquid or foam
    • B65G53/04—Conveying materials in bulk pneumatically through pipes or tubes; Air slides
    • B65G53/06—Gas pressure systems operating without fluidisation of the materials
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G53/00—Conveying materials in bulk through troughs, pipes or tubes by floating the materials or by flow of gas, liquid or foam
    • B65G53/34—Details
    • B65G53/40—Feeding or discharging devices
    • B65G53/46—Gates or sluices, e.g. rotary wheels

Definitions

  • ABSTRACT A system (method and apparatus) for rapidly and selectively conveying and distributing light weight materials in subdivided free flowing form.
  • the system operates in conjunction with blower and air dissipating means to selectively deliver predetermined amounts of light weight materials to various remote distribution outlets associated with a generally closed air conveyance system.
  • the system makes use of volumetric air dissipating means at each such outlet which operate both to discharge predetermined amounts of the subdivided light weight materials at such outlets and to replace from a central source only the amounts of material discharged.
  • the system has utility in the distribution of predetermined amounts of subdivided I materials (e.g., cushioning and packaging materials, dry cereals, chemicals and similar light weight materials) to localized filling and packaging operations.
  • This invention relates generally to methods and apparatus for the rapid conveyance and selective distribution of subdivided light weight materials and more particularly to methods and means making possible the rapid selective distribution of predetermined amounts of light weight subdivided materials at desired localized distribution outlets.
  • the present invention has particular application in the'conveyance and selective distribution of free-flowing cushioning and packaging materials of the type disclosed, for example, in the U. S. Pat. Nos. 3,074,543, 3,l88,464,3,400,037, and 3,481,455.
  • Cushioning and packaging materials of the type disclosed in these patents are formed of a foamed expanded plastic material with a unit size and shape adapted to facilitate a free-flowing characteristic.
  • Such cushioning and packaging materials are very light in weight, having a bulk density of the order of 0.5 to 1.0 pounds per cubic foot and ranging from about 0.3 to 4.5 pounds per cubic foot. Such materials are consequently not easily conveyed as they have insufficient bulk to effect rapid effective conveyance and distribution by conventional means such as endless conveyors and the like.
  • the extreme light weight of such materials also presents problems in conjunction with proposals for fluid or air conveyance due to a susceptibility to channeling or blow through of the pressurized gas used as a conveyance medium (e.g., compressed air).
  • a conveyance medium e.g., compressed air
  • a further problem is presented by the difficulty of delivering predetermined amounts of such materials to a specified packaging or filling operation, particularly where such packaging and filling operations are at widely dispersed points in a plant operation.
  • SUMMARY OF INVENTION AND OBJECTS use of alternative operating conditions or stages. ln a first stage, static equilibrium or hold conditions are created with respect to a supply of light weight material to be distributed and a source of conveyance gas under pressure.
  • the conveyance gas is continuously introduced from the pressure source to a generally closed conveyance system, adjacent to which is positioned a relatively large supply of the light weight material.
  • the flow of conveyance gas is vented or dissipated at a point beneath the material supply to thereby create a positive gas pressure which normally holds the light weight material in a suspended or rest position for subsequent feeding into the conveyance system.
  • a substantial portion of the conveyance gas is diverted to a desired distribution outlet in the closed system so that the positive gas pressure I is converted to negative gas pressure (i.e., suction) which causes part of the supply of light weight material to be drawn into the conveyance system.
  • negative gas pressure i.e., suction
  • the method of the present invention is particularly adaptable to plant operations where it is desirable to distribute a predetermined quantity of a light weight subdivided material (e.g., foamed expanded plastic cushioning and packaging material) to a remote packaging or filling operation.
  • a light weight subdivided material e.g., foamed expanded plastic cushioning and packaging material
  • Apparatus for carrying out the foregoing method generally comprises a closed conveyance system in communication with means to effect the desired fluid conveyance (e.g., a blower) together with a hopper or other means to contain a supply of the light weight material.
  • the hopper has a screened outlet which functions to dissipate the flow of air from the blower and also to create a positive gas pressure which holds the light weight material in supported or suspended relation within the hopper.
  • the closed circulatory system is further provided with one or more distribution outlets which function to effect a controlled conveyance and discharge of predetermined volumes of the light weight material at points remote from the hopper.
  • each of the distribution outlets comprises an elongate section of screening material of an area substantially greater than that of the screened hopper outlet, and of a volume substantially equilvalent to the volume of material to be discharged.
  • the distribution system and method of the present invention makes possible a rapid selective distribution of predetermined volumes of the light weight material, on demand, at each distribution outlet.
  • the apparatus thus includes additional means to insure that the material withdrawn from the hopper will be delivered only at a selected distribution outlet and not bypass such outlet in favor of a more remote distribution outlet.
  • Another object is to provide a relatively simple, inexpensive, highly effective means for carrying out the method of the present invention.
  • a further object of the invention is to provide a method and means of such character capable of use with a wide variety of light weight subdivided materials.
  • Another object of the invention is to provide an improved method and means of such character that does not require complicated procedures or machinery, and which is adaptable to virtually any present-day system for air conveyance of light weight materials.
  • Another object of the invention is to provide an improved system for accomplishing the selective delivery of light weight subdivided materials which can be rapidly and effectively employed by a single operator, moving between widely spaced distribution outlets.
  • FIG. 3 is a view in horizontal section along the line 3-3 of FIG. 2.
  • FIG. 4 is a view in transverse section along the line 4-4 of FIG. 2.
  • FIG. Sis a like view along the line 5-5 of FIG. 2.
  • FIG. 6 is a view in section and elevation of another portion of the apparatus of FIG. 1, illustrating a further feature thereof.
  • FIG. 7 is a like view, illustrating a further portion of the apparatus of FIG. 1.
  • FIG. 8 is an enlarged exploded view, in perspective, illustrating details of a particular distribution device useful in carrying out the present invention.
  • FIG. 9 is a view partly in section, illustrating another embodiment of portions of the apparatus shown in FIGS. 1 and 6. 1
  • FIG. 1 illustrates a particular system of apparatus in accordance with the present invention.
  • the apparatus is particularly useful in the selective conveyance and distribution of predetermined amounts of lightweight cellular packing materials (e.g., foamed expanded polystyrene) and similar light weight materials, for example, in plant filling and/or packaging operations.
  • lightweight cellular packing materials e.g., foamed expanded polystyrene
  • similar light weight materials for example, in plant filling and/or packaging operations.
  • the system operates to feed the material from a suitable hopper 14 through a closed conveyance system 16 to one or more distribution outlets generally represented at 18.
  • Air pressure for conveyance of the light weight material is generated by a blower or other suitable device 20, which continuously introduces air under pressure to the upstream or inlet side of the closed circulatory system, generally represented at 22.
  • the hopper 14 may be formed of any suitable material, depending to some extent on the nature of the light weight material 12 being distributed.
  • the hopper in conjunction with foamed expanded polystyrene packaging materials, can be formed of canvas, duck, or similar light weight fabric.
  • the hopper can be formed of inert plastic material, sheet metal, or other rigid or semi-rigid material.
  • the hopper 14 When appropriately filled with a substantial quantity of the material 12, the hopper 14 provides a source of supply of light weight material for distribution through the closed conveyance system 16.
  • the hopper 14 is provided with a screened discharge outlet or vent section 24 which functions to normally dissipate the air pressure generated by the blower 20.
  • the blower produces a positive air pressure in the closed system 16 which tends to induce an upward flow of air within the vent section 24.
  • this upward flow is dissipated by venting to the at mosphere through the screen section 26, which may be formed of suitable screening material such as cloth, plastic or metal screening.
  • the weight of the material 12 in the hopper produces sufficient back pressure that the screen outlet 26 serves to divert and reduce the upward pressure of the air flow, thereby preventing blow-through or channeling of air from the blower through the material in the hopper.
  • the light weight material in the hopper is held and supported in a rest position above the screened outlet section 24 by the gentle upward pressure of the gases dissipating outwardly through the section 26 (FIG. 2).
  • the screened outlet 24 is preferably in fluid communication with a flattened venturi section 30, forming a part of the closed conveyance system 16.
  • the flattened venturi 30 functions, upon demand, to induce a negative air pressure (i.e., suction) within the hopper outlet 24, making possible the discharge of relatively large volumes of light weight material into the closed conveyance system 16.
  • the conduits 32 and elbow connections 34 of the conveyance system may have a circular cross-section, thus facilitating use of commercially available components (e.g., fabricated of sheet metal, plastic, etc.).
  • a conventional venturi restriction of circular crosssection would greatly reduce the internal dimensions of the screened outlet section 24, and thus undesirably restrict the volume of material capable of being gravity fed into the closed conveyance system 16.
  • this problem is overcome by the use of a flattened venturi restriction 36 which, as best seen in FIGS. 3 and 6, permits a much larger diameter connection between the hopper outlet 24 and the venturi 30.
  • the flattened cross-section of the venturi also facilitates the passage of relatively high volumes of conveying air through the venturi restriction 36.
  • each of these distribution outlets comprises an elongate conduit 38 formed of screening means and terminating in a valved discharge outlet 40.
  • the elongate conduit sections 38 functions generally as air dissipating, dispensing reservoirs of desired predetermined volume, which may be selectively discharged by operation of a particular valve means 40.
  • a selected distribution outlet 18 contains a charge of light weight material within the screened portion 38, for example as in FIG. 6, operation of the discharge valve 40 will cause the entire contents of the conduit 38 to fall by gravity into the container 10.
  • the screened section 38 will function immediately to dissipate air pressure from the blower and to induce a high volume of air flow through the restricted venturi section 30.
  • This in turn, produces a low or negative pressure zone within the discharge outlet 24 of the hopper, which causes a relatively large volume of light weight material to 12 to be sucked downward through the outlet 24 into the rapidly moving air stream within the venturi restriction 36.
  • the material passing from the hopper into the venturi restriction is rapidly conveyed by the pressure of the blower through the conduit sections 32, 34 to the empty screen section 38. This operation continues at a rapid rate until the light weight material again fills the screen section 38, thus preventing the continued dissipation of air pressure through the screened portion 38.
  • each of the elongate screen sections functions as a reservoir for a charge of material of preselected volume.
  • the blower will immediately function to deliver a new charge to such sectionuntil it again is full. This operation of the blower in conjunction with the feed hopper 14 will continue so long as any of the distribution outlets 18 are in use, for example in a filling and/or packaging operation.
  • valve means 40 be adapted to rapid operation by a single operator.
  • the valve means is of the scissors type operates upon squeezing the opposed handles 42 together to discharge the contents of the screen section 38.
  • the valve 40 may comprise a pair of half valve segments 44 which are mounted in coplanar relationship with respect to pivot pin 46 by means of offset pivot mounts 48.
  • The'valve segments 44 are normally biased into .a position of mating,,coplanar contact by I means of a torsion spring 50.
  • valve segments 44 are held in closed position beneath the cylindrical discharge orifice 54 which is mounted and held on the valve plate 56.
  • the screen sections 38 are secured between the end of the plate 54 and airconveyance system by any suitable means, such as conventional clamp members 58. It will be appreciated that a squeezing pressure to bring the valve handles 42 together will swing the valve segments 44 apart, against the pressure of the torsion spring 50. Such operation can easily be accomplished by the operator, using only one hand so that the other hand is free to move the carton 10 into position, or to perform other operations. Opening the valve 40 will operate to discharge all or part of the contents of the screened section 38, as may be desired by the operator.
  • opening of the valve 40 immediately acts to uncover at least the upper portionof an elongate screened conduit 38, thereby releasing the air pressure within the closed conveyance system at such point.
  • the release of air pressure immediately causes the light weight material in the hopper 14 to be conveyed by the blower to the point of pressure release.
  • the interconnecting or branching conduits 60 between the separate distribution outlets 18 are constructed to provide an axial, non-branching flow of material to the discharge outlet.
  • the interconnecting conduit 60 is provided with.
  • valve 40 Upon operation of valve 40 to cause dissipation of air through the screen section 38, the movement of conveying air will naturally follow the direct path along the axial conduit portion 62, as represented by the arrows,
  • such means may simplycomprise one or more adjustable clamps or like means which squeeze andreduce the cross sectional area of the venturi restriction.
  • the flattened cross section represents a substantial reduction in area as respects the original or full line configuration.
  • the negative pressure of suction required within the venturi for satisfactory conveyance will depend upon the overall size and volume of the conveying system itself (i.e., the size or diameter of the conduits 32, 34, the number of dispensing stations 18, the distance toand between separate stations, and so on).
  • the clamp means 80, or other suitablemeans any desired amount of negative pressure can be obtained as may be necessary for a particular conveyance system 16.
  • the blower 20 (which functions as a source of gas under pressure) discharges conveyance air at relatively high volume through the venturi-restriction 30 to the dissipating screen of the hopperoutlet 24.
  • eachof the elongatesections 38 at the dis,- tribution outlets 18 is full of light weight packaging material 12, thus preventing dissipation of appreciable volumes of conveyance air through these screened reservoirs.
  • the material from the hopper quickly finds its way to the screen unit being discharged where it rapidly replaces the material passing through the discharge outlet 18.
  • the length and diameter of the screen sections 38 provides a relatively precise degree of control over the amount of material actually delivered through the distribution outlet 18. This control function is assisted by. the particular construction of the interconnecting conduits 60, which act to prevent 'overfilling through bypass of material to discharge outlets downstream from the filling operation.
  • the illustrated apparatus thus facilitates rapid, controlled filling or packaging operations at localized positions around the plant, represented by the individual distribution I outlets 18, with immediate makeup of lost material by movement from the hopper 14 to the screen section 38 immediately adjacent the filling operation.
  • the present invention also enables such results to be easily and rapidly accomplished through use of readily available standard components, which may be easily assembled to meet a wide variety of requirements.
  • the system functions effectively to use the air pressure from a conventional blower to hold and support a source of supply of light weight subdivided materials, while permitting periodic diversion of a substantial portion of such materials to distribution outlets in response to localized demand.
  • the utility of the concepts of the present invention in the rapid selective distribution 'of light weight materials in subdivided form is thus readily, apparent.
  • a hopper containing a substantial quantity of said material, said hopper having a screened gas dissipating outlet, substantially closed conduit means in fluid communication with said hopper outlet, said substantially closed conduit means including a venturi positioned immediately adjacent and in communication" with. said hopper outlet, means to adjust the cross-sectional area of said venturi, blower means'in fluid communication with said conduit means and said gas dissipating hopper outlet, said conduit means being provided with at least one remote distribution outlet, and gas dissipating discharge means at said distribution outlet to effect a controlled discharge of a predetermined volume of said material from said distribution outlet.
  • a feed hopper containing a substantial quantity of said materi-' al, said hopper'having an outlet, substantially closed conduit means 'in fluid communication with said hopper outlet, said conduit means including venturi.
  • branch conduit means include venturi means positioned at a point of branching.
  • v 6 A system of apparatus as in claim 3 wherein each of said distribution outlets is provided with valve means to separately effect a controlled discharge of a1 predetermined volume of said material.
  • a system of apparatus for the rigid selective delivery of predetermined volumes of light weight subdivided materials comprising: a feed hopper adapted to contain a substantial volume of said material, a screened outlet for said hopper adapted to discharge light weight material therefrom by gravity flow, substantially closed conduit means in fluid communication with said hopper, said conduit means including a flattened venturi section immediately adjacent and in fluid communication with said substantially closed hopper outlet, blower means in fluid communication with said screened conduit means and normally adapted to vent through said screened hopper outlet, a series of remote distribution outlets forming a part of said substantially closed conduit means, each of said distribution outlets including branch conduit means terminating in an elongate portion formed of screening means, valve means associated with said branch conduit means and operable to selectively effect a controlled discharge of material from said branch conduit means, each of said valve means being selectively operable to successfully effect discharge and replacement of a predetermined volume of said light weight material.
  • each of said branch conduit means within the screened portion thereof, is substantially greater than the screen area of the screened hopper outlet.
  • each of said valve means comprises a scissors valve adapted to manual operation with a single hand.
  • a method for the rapid selective delivery of predetermined volumes of light weight subdivided materials at remote locations the steps of creating a source of gas under pressure, introducing gas from said source to a generally closed conveyance system, positioning a source of supply of said light weight material adjacent said closed conveyance system, normally directing gas from said pressure source to a zone of gas dissipation between said source of supply of light weight material and said closed conveyance system to thereby effect a holding and supporting of said source of light weight material in suspended relation, and selectively diverting a substantial portion of the flow of gas from said pressurized source to a distribution outlet in said closed conveyance system to both interrupt the flow of gas to said'zone of dissipation and to reduce the gas pressure therein, whereby a portion of said supply of light weight material is caused to pass through said closed conveyance system to said distribution outlet.
  • a method as in claim 10 wherein said light weight subdivided material comprises a multitude of individual cushioning and packaging units.
  • cushioning and packaging units are formed of foamed expanded plastic material having a bulk density of about 0.3 to
  • a hopper containing a substantial quantity of said material, said hopper having a gas dissipating outlet, substantially closed conduit means in fluid communication with said hopper outlet, said substantially closed conduit means including a venturi positioned immediately adjacent and in communication with said hopper outlet, said venturi being flattened to provide an-inside dimension substantially equivalentto the inside diameter of said hopper outlet, blower means in fluid comm unication with said conduit means and said gas dissipating hopper outlet, said conduit means being provided with at least one remote distribution'outlet, and gas dissipating discharge means at said distribution outlet to effect a controlled discharge of a predetermined volume of said material from said distribution outlet.
  • a hopper containing a substantial quantity of said materi-. al, said hopper having a gas dissipating outlet, substantially closed conduit means in fluid communication with said conduit means and said gas dissipating hopper outlet, said conduit means being provided with at least one remote distribution outlet, and gas dissipating discharge means at said distribution outlet to effect a controlleddischarge of a predetermined volume of said material from said distribution outlet, said last named means being in the form of an elongated conduit formed of screening means and having a volume substantially equivalent to the volume of material to be discharged from said-distribution outlet.
US00086112A 1970-11-02 1970-11-02 System for selective distribution of light weight materials Expired - Lifetime US3708208A (en)

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Cited By (32)

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US4081044A (en) * 1977-05-10 1978-03-28 Kenneth Martin Allen Feed control system for multiple packaging machines
US4147392A (en) * 1977-06-30 1979-04-03 Free-Flow Packaging Corporation Vehicular transport and conveyance system
US4259031A (en) * 1978-06-22 1981-03-31 Maskin Ab Rapid Method and apparatus for feeding a processing machine
US4284372A (en) * 1979-11-19 1981-08-18 The Dow Chemical Company Efficient handling and charging system for expanded, low-density, loose-fill packaging material(s)
US4422810A (en) * 1978-12-20 1983-12-27 Conair, Inc. Apparatus for transporting pneumatically suspended particulates from a source to a plurality of receivers
EP0257895A2 (de) * 1986-08-07 1988-03-02 Free-Flow Packaging Corporation Luftfördersystem zum Ausgeben und Rückführen
US5000623A (en) * 1988-09-05 1991-03-19 Ab Lectrotechnic Device for handling piece-formed packing material
US5660215A (en) * 1994-10-27 1997-08-26 Zeppelin Schuettguttechnik Gmbh Loading apparatus for bulk materials
US5931610A (en) * 1997-05-19 1999-08-03 Arr-Maz Products, L.P. Fiber dispensing system
WO2001027010A2 (en) * 1999-01-12 2001-04-19 Siah, Tong, Ngee Bulk conveying and distribution system, method for controlling the same and pneumatic conveying method
US6296424B1 (en) 1999-03-10 2001-10-02 Storopack, Inc. Apparatus for handling and conveying loosefill
US6428246B1 (en) 2000-06-22 2002-08-06 Sealed Air Corporation System and method of conveying, storing, and dispensing packing material
US6453644B1 (en) 1999-06-14 2002-09-24 Storopack, Inc. Method and means for producing, conveying, storing and utilizing air pillows
US6519916B1 (en) 1998-12-21 2003-02-18 Free-Flow Packaging International, Inc. System and method for conveying air-filled packing cushions
US6536183B1 (en) 1998-12-21 2003-03-25 Free-Flow Packaging International, Inc. Air-filled packing cushion delivery system
US20060153649A1 (en) * 2005-01-07 2006-07-13 Folstadt Robert H Jr Particle loading system
US20090064638A1 (en) * 2004-11-02 2009-03-12 Ranpak Corp. Automated flowable dunnage dispensing system and method
US20090202311A1 (en) * 2005-10-07 2009-08-13 Hi-Plains Trading Company Methods and systems for delivering lost circulation material into drilling pits
CN100545064C (zh) * 2004-03-29 2009-09-30 杭州中科管道物流工程有限公司 一种易氧化性粉料流态化输送装置
CN1955090B (zh) * 2005-10-26 2011-01-26 软控股份有限公司 实现远程称量输送的配料方法
US20110170962A1 (en) * 2010-01-08 2011-07-14 The Gsi Group, L.L.C. Pneumatic Grain Conveying Apparatus and Method for Selectively Discharging Grain or By-Passing the Discharge of Grain Into a Grain Bin
CN102959347A (zh) * 2010-06-24 2013-03-06 熊津豪威株式会社 制冰方法
US20140000720A1 (en) * 2012-06-29 2014-01-02 General Electric Company Apparatus and method of delivering a fluid using a non-mechanical eductor pump and lock hopper
US20140110425A1 (en) * 2012-10-19 2014-04-24 Jason Pahl System and method for portable dry chemical injection
CN104760819A (zh) * 2014-01-07 2015-07-08 丰田自动车株式会社 粉体供给装置
US20160207718A1 (en) * 2015-01-20 2016-07-21 Montag Investments, LLC Metering system for solid particulate
US10260924B2 (en) 2015-01-20 2019-04-16 Montag Investments, LLC Modulated metering system
US10368480B2 (en) 2015-01-20 2019-08-06 Montag Investments, LLC Single particulate metering system with variable rate controls
US10569972B2 (en) 2015-01-20 2020-02-25 Montag Investments, LLC Metering system for solid particulate
US10816382B2 (en) 2015-01-20 2020-10-27 Montag Investments, LLC Metering system for solid particulate
US11111087B1 (en) * 2020-08-26 2021-09-07 Xiongqing Yu Transfer system for soft gels
EP4059872A1 (de) * 2021-03-15 2022-09-21 Bühler AG Pneumatische leitung für eine futter- oder nahrungsmittelmühle

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US3520447A (en) * 1966-04-18 1970-07-14 Coast Metals Inc Control for powder feed or spray torch

Cited By (52)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4081044A (en) * 1977-05-10 1978-03-28 Kenneth Martin Allen Feed control system for multiple packaging machines
US4147392A (en) * 1977-06-30 1979-04-03 Free-Flow Packaging Corporation Vehicular transport and conveyance system
US4259031A (en) * 1978-06-22 1981-03-31 Maskin Ab Rapid Method and apparatus for feeding a processing machine
US4422810A (en) * 1978-12-20 1983-12-27 Conair, Inc. Apparatus for transporting pneumatically suspended particulates from a source to a plurality of receivers
US4284372A (en) * 1979-11-19 1981-08-18 The Dow Chemical Company Efficient handling and charging system for expanded, low-density, loose-fill packaging material(s)
EP0257895A2 (de) * 1986-08-07 1988-03-02 Free-Flow Packaging Corporation Luftfördersystem zum Ausgeben und Rückführen
US4799830A (en) * 1986-08-07 1989-01-24 Free Flow Packaging Corporation Air conveyor dispensing and recycling system
EP0257895A3 (de) * 1986-08-07 1990-01-10 Free-Flow Packaging Corporation Luftfördersystem zum Ausgeben und Rückführen
US5000623A (en) * 1988-09-05 1991-03-19 Ab Lectrotechnic Device for handling piece-formed packing material
US5660215A (en) * 1994-10-27 1997-08-26 Zeppelin Schuettguttechnik Gmbh Loading apparatus for bulk materials
US5931610A (en) * 1997-05-19 1999-08-03 Arr-Maz Products, L.P. Fiber dispensing system
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Also Published As

Publication number Publication date
GB1342373A (en) 1974-01-03
FR2112386A1 (de) 1972-06-16
DE2154199A1 (de) 1972-05-10
FR2112386B1 (de) 1974-09-27

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