US3273761A - Agitator for granular materials and the like - Google Patents

Agitator for granular materials and the like Download PDF

Info

Publication number
US3273761A
US3273761A US403527A US40352764A US3273761A US 3273761 A US3273761 A US 3273761A US 403527 A US403527 A US 403527A US 40352764 A US40352764 A US 40352764A US 3273761 A US3273761 A US 3273761A
Authority
US
United States
Prior art keywords
diaphragm
agitator
corner zone
fluid
container
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 - Lifetime
Application number
US403527A
Other languages
English (en)
Inventor
Langen Peter
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.)
CLOUTH RHEIN GUMMIWARENFABRIK
FRANZ CLOUTH RHEINISCHE GUMMIWARENFABRIK AG
Original Assignee
CLOUTH RHEIN GUMMIWARENFABRIK
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 CLOUTH RHEIN GUMMIWARENFABRIK filed Critical CLOUTH RHEIN GUMMIWARENFABRIK
Application granted granted Critical
Publication of US3273761A publication Critical patent/US3273761A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D88/00—Large containers
    • B65D88/54—Large containers characterised by means facilitating filling or emptying
    • B65D88/58—Large containers characterised by means facilitating filling or emptying by displacement of walls
    • B65D88/60—Large containers characterised by means facilitating filling or emptying by displacement of walls of internal walls
    • B65D88/62—Large containers characterised by means facilitating filling or emptying by displacement of walls of internal walls the walls being deformable

Definitions

  • the present invention relates to devices for storing and dispensing granular, pulverulent and otherwise comminuted solid materials. More particularly, the invention relates to an agitator which may be installed in hoppers or the like to prevent bridging of accumulated material and to thereby promote controlled evacuation of such material.
  • such agitators comprise a plate-like carrier, a diaphragm whose marginal portions are sealingly secured to the carrier and which is in contact with the material in a bin or the like, and a source of compressed fluid from which the fluid may be admitted into the space between the diaphragm and the carrier to expand the diaphragm whereby the latter exerts a certain pressure against the mass of comminuted material and breaks up any undesirable accumulations which might cause bridging or which otherwise tend to hinder control-led evacuation of material from the bin.
  • the carrier is adjacent to and is placed flat against a flat side wall of the bin and, in many instances, the diaphragm is flattened out completely when the internal space of the agitator is not filled with a fluid pressure medium.
  • an important object of the present invention to provide an improved agitator which is capable of promoting controlled evacuation of granular, pulverulent or otherwise comminuted material in a manner which is much more satisfactory than the action of all such agitators of which I have knowledge at this time.
  • Another object of the invention is to provide a fluidoperated agitator of the just outlined characteristics wherein the flexible element is subjected to lesser stresses than the flexible element of a conventional diaphragmtype agitator for coal, rock, flour and similar flowable solid materials.
  • a further object of the invention is to provide an improved bin, hopper or analogous container which is equipped with one or more agitators of the above outlined general character.
  • An additional object of the invention is to provide an improved carrier for use in a fluid-operated agitator of the above outlined characteristics.
  • a concomitant object of the invention is to provide an agitator whose diaphragm-like flexible elements is much less likely to suffer minor or major damage in response to repeated and exceptionally strong contact with accumulations of flowable solid material.
  • Another object of my invention is to provide an agi- 3,273,761 Patented Sept. 20, 1966 tator which will operate satisfactorily and which is not likely to break down even though its fluid-admitting and evacuating system operates without any safety devices which are essential in many heretofore known agitators of this general character.
  • Still another object of the invention is to provide a specially con-figurated diaphragm-like flexible element which may be used with particular advantage in an agitator of the above outlined type.
  • a further object of the invention is to provide an agitator which is capable of subjecting comminuted solid material to at least some loosening stresses even when the diaphragm is in idle position.
  • Another object of the invention is to provide an a'gitator whose diaphragm is dimensioned, constructed and mounted in such a way that it automatically prevents or hinders adherence of comminuted material to its exposed surface.
  • the invention resides in the provision of an apparatus for storing and dispensing granular and like comminuted materials.
  • the apparatus comprises a container defining an internal space arranged to accommodate a supply of comminuted material and including two mutually inclined side walls having inner sides bounding an elongated corner zone of the internal space in which the material tends to agglomerate, and a novel agitator which comprises a flexible diaphragm preferably consisting at least in part of elastomeric material and extend ing across a portion of the corner zone to define with the side walls a fluid-receiving chamber.
  • the agitator further comprises means for admitting a fluid into the chamber to flex the diaphragm against the material in the internal space of the container and to thus break up eventual agglomerations in the corner zone.
  • the edge portions of the diaphragm are sealingly secured to the marginal portions of a rigid carrier having two mutually inclined sections or panels each of which is secured to the inner side of one of the side walls, and such panels may be reinforced by stitfeners which are inclined with reference to the corner zone.
  • the stiffeners increase the resistance of the respective panels in a direction toward the corner zone.
  • FIG. 1 is a diagrammatic perspective view of a container comprising a plurality of agitators which are con structed in accordance with the present invention
  • FIG. 2 is an enlarged horizontal section through a corner portion of the container and through one of the agitators, substantially as seen in the direction of arrows from the line II-II of FIG. 1;
  • FIG. 3 is a fragmentary vertical section as seen in the direction of arrows from the line IIII'II of FIG. 2;
  • FIG. 4 is a top plan view of the agitator, substantially as seen in the direction of the arrow IV in FIG. 3.
  • FIG. 1 there is shown the lower portion of a storage container or bin "1 which accommodates a supply of coal, rock, sand, flour :order flowable comminuted solid material.
  • the container comprises a bottom portion 2 which constitutes a hopper and comprises four inwardly and downwardly inclined side Walls converging toward a discharge opening or outlet 3.
  • This hopper accommodates a plurality of agitators which are constructed in accordance with the present invention.
  • FIG. 1 shows that the hopper 2 acoommodates two agitators, but it is often suflicient to provide the hopper with a single agitator or to provide this hopper with as many as three or even four agitators.
  • the left-hand agitator 4 is mounted in the corner zone between the side walls 5, 6 and the right hand agitator 7 is mounted in the corner zone between the side walls 6 and 8.
  • the two agitators are of identical construction and, therefore, it suffices to describe in full detail one of them, namely, the agitator 4 whose construction is illustrated in FIGS. 2, 3 and 4.
  • FIG. 2 shows that the agitator 4 comprises a rigid V- shaped carrier 410 including a left-hand section or panel 111 which is adjacent to the inner side of the side wall and a right-hand section or panel 12 which is adjacent to the inner side of the side wall 6.
  • the sections '11, 12 are connected by a flat back section or web 13 which extends across the corner zone '14 between the mutually inclined side walls 5 and 6.
  • Each of the sections 11, 12 is of polygonal outline and resembles a trapezium or trapezoid, but it is equally possible to use a carrier whose sections are triangular, semicircular or semielliptical.
  • the marginal portions of the sections '11, .12 are provided with inner clamping rails 15 which are welded thereto and which cooperate with outer clamping rails 16 to engage the opposite sides of the edge portions 18 on a deformable flexible element 17 (hereinafter called diaphragm) of rubber or other elastomeric material.
  • Each edge portion 118 is provided with a bead or end zone 19 which extends outwardly beyond the adjacent portions of the clamping rails :15, 16 to abut against the inner side of the side wall 5 or 6.
  • the clamping rails 15, 16 are connected by bolts 20 which extend through the edge portions 18 so that the diaphragm is sealingly retained between the rails to prevent uncontrolled escape of compressed air or another suitable pressure medium which may be admitted into the internal chamber 21 of the agitator 4.
  • the outer clamping rails 16 are provided with brackets 22 which are secured to the side walls 5, '6 by bolts 23, for example, by bolts known as expansion anchors. It will be seen that the beads 19 form a fluidtight seal around the sections 11,12 by abutting against the inner sides of the walls 5, 6 so that the outer sides of the sections may remain slightly spaced from such walls.
  • the diaphragm 17 extends across the corner zone 14.
  • the side wall 5 is provided with a bore which accommodates the discharge end of a supply conduit 24 serving to admit compressed fluid from a suitable source, for example, an air compressor 25 or the like.
  • the conduit contains a shutofi valve 26 of any known design.
  • the section 11 is provided wit-h an aperture 27 which registers with the discharge end of the conduit '24, and the latter is preferably provided with an annular flange which is bolted to the section 1 1 and/or to the side wall 5.
  • the side wall 5 is further provided with a second bore 28 which serves to allow for evacuation of pressure fluid and is connected with a discharge conduit 29 including a valve 30 of any known design.
  • the agitator 4 comprises a safety valve 31 which is mounted at the intake end of the bore 28 and may be caused to open in a fully automatic Way in response to a predetermined maximum pressure in the chamber 21.
  • the means for opening the valve 311 in response to such maximum pressure comprises a series of cord-like or cable-like actuating elements 32 which are connected to space-d portions of the diaphragm 17 and at least one of which will open the safety valve 31 when the corresponding portion of the diaphragm is deformed beyond the phantom-like position 17'.
  • the exact construction of the safety valve 31 forms no part of the present invention. "For example, a satisfactory safety valve for use in the agitator 4 and/ or 7 is disclosed in my US. Letters Patent No. 3,121,500 which is assigned to the same assignee.
  • the diaphragm 17 is preferably designed to transmit very high pressures which are necessary to break up agglomerations of flowable material in the internal space 33 of the hopper 2 when the diaphragm is flexed by fluid which is admitted into the chamber 21, the metallic material of the sections 11, 12 could undergo deformation in response to a pull exerted against such portions of the inner clamping rails 15 which extend between the brackets 22.
  • the carrier may be provided with several stiffening ribs 34, depending on the dimensions of the agitator, on the thickness of the sections, on the material of the sections, on the nature of material which is being stored in the internal space 33, on the pressures prevailing in the chamber 21, and on certain other factors.
  • the cross sections of the ribs 34 increase toward the web 13 where the carrier 10 is subjected to highest bending stresses, and the ribs are inclined at least slightly with reference to the longitudinal direction of the corner zone 14.
  • the resistance which the panels 11, 12 offer to the flexing action of fluid in the chamber 21 increases toward the web 13.
  • the sections 11, .12 may consist of corrugated metallic stock, and it is equally possible to provide such sections with additional stiffeners in the form of vertical or nearly vertical ribs which are parallel with the web 13.
  • the beads 19 seal the internal space 33 from the aperture 27 and bore 28.
  • the diaphragm 17 is preferably dimensioned in such a way that, when the valve 30 is open and the chamber 21 is empty, the inner side of the diaphragm is of concave shape, see FIG. 2, whereby the outer side of the diaphragm may but need not overlie the stiffening ribs 34.
  • An important advantage of such dimensioning of the diaphragm is that the latter undergoes substantial expansion only at the time when it has been caused to move beyond the phanton-line position 17. In other words, during its movement from the idle position 17 to the position 17', the diaphragm is not subjected to substantial stresses which would tend to exert thereon a pull in the plane of its material.
  • the diaphragm will be capable of transmitting stresses exceeding substantially such stresses which are transmitted by a diaphragm which is maintained under initial tension.
  • the ribs 34 prevents complete collapse of the diaphragm 17 even if the latter is subjected to substantial deforming stresses by contact with flowable material which fills the space 33. Therefore, the diaphragm cannot overlie completely the inner sides of the sections 11, 12 and the fluid which enters through the aperture 27 will be free to flow to all or nearly all zones of the chamber 21 to act against the outer side of the diaphragm and to move it to the position 17 whenever necessary, i.e., whenever the operator desires to insure controlled evacuation of material through the outlet 3 of the hopper 2.
  • the chamber of the agitator is free to expand without any or with minimal opposition on the part of comminuted material.
  • the material which is accommodated in the storage container tends to agglomerate or to form a bridge which opposes the expansion of the diaphragm, and when the operator continues to admit compressed air into the internal chamber of the agitator, the material at the inner side of the diaphgram often yields quite suddenly and allows for rapid expansion of the diaphragm. If the diaphragm is not strong enough and/or if the internal pressure in the agitator happens to be very high, the diaphragm will be destroyed as soon as the material yields and begins to break up to be evacuated through the outlet of the storage container.
  • the agitator 4 is operated as follows:
  • the agitator need not be put to use.
  • the valves 26, 30 and 31 are closed, and the diaphragm 17 is in the full-line position of FIG. 2.
  • the material in the hopper 2 presses against the inner side of the diaphragm and causes it to yield into the spaces between the stiffening ribs 34.
  • the operator thereupon exposes the outlet 3- and notices that the material refuses to flow freely, he opens the valve 26 and starts the compressor so that the chamber 21 is gradually filled with compressed air.
  • the diaphragm 17 begins to move toward the position 17' and exerts upon the material in the space 33 a pressure which, sooner or later, is bound to break down the resistance of such material and promotes regular outflow through the outlet 3. Should the diaphragm expand beyond the position 17', at least one of the cords 32 will open the safety valve 3 1 so that air filling the chamber 21 may escape through the discharge conduit 29.
  • the operator opens the valve at the time he starts the compressor 25.
  • the valve 3-1 closes automatically when the diaphragm 1-7 returns to the position 17',
  • the diaphragm 17 in such a way that the median port-ion 17a is somewhat thicker than the remainder of the diaphragm.
  • Such median portion 170: of greater thickness preferably extends in the longitudinal direction of the corner zone 14. -By making the median portion 171 thicker, I insure that the diaphragm can withstand stresses which are transmitted thereto by comminuted material when the agitator is not in use.
  • the diaphragm may be reinforced :by inserts in the form of filaments or in any other suitable way.
  • the filaments 40 are embedded in the elastomeric material of the diaphragm and are inclined with reference to the corner zone 14.
  • the agitators of my invention When the agitators of my invention are installed in a storage container which comprises a hopper or a similar discharging device having pairs of mutually inclined side walls, the agitators will be mounted in the corner zones between the side Walls.
  • the agitators of my invention are quite useful in containers which comprise vertical or nearly vertical side Walls.
  • the diaphragm need not be a flat body of flexible material.
  • the diaphragm may be formed in such a way that it automatically tends to resemble a cup, such as is shown at 17 in FIG. 2, even when its material is in unstressed condition.
  • Such cupshaped diaphragms as well as the diaphragm of FIGS. 2-4 will be capable of subjecting the material in the space 33 to substantial loosening stresses without undergoing any appreciable expansion.
  • a diaphragm of the type disclosed in my aforementioned Patent No. 3,121,500 normally begins to expand as soon as it starts to move from the idle position in which it lies substantially flat against its carrier.
  • a diaphragm which begins to expand as soon as it starts to move from the idle position requires higher pressures in the internal chamber of the agitator because the pressure of compressed air must overcome not only the resistance which is offered by the material in the storage container but also the resistance which the material of the diaphragm offers to expansion.
  • Such resistance to expansion is offered by the diaphragm 17 only at the time it reaches the phantom-line position 17' of FIG. 2.
  • the reinforcing elements are preferably inclined with reference to the zone of maximum expansion of the diaphragm, i.e., with reference to the corner zone 14.
  • the diaphragm may be dimensioned in such a way that it is maintained under some initial tension along the corner zone 14.
  • an agitator for said corner zone comprising a rigid carrier having two mutually inclined sections bounding a section corner zone, a flexible diaphragm having edge portions sealingly secured to the corresponding sections and extending across said section corner zone to define with the carrier a fluid-receiving cham ber, and means for admitting a fluid into said chamber to flex the diaphragm; and means for securing said sections to the inner faces of said mutually inclined side walls of a container, so as to overlie said container corner zone, whereby said agitator breaks up eventual agglomeration of material in said section corner zone when said diaphragm is flexed in response to admission of fluid into said chamber.
  • said diaphragm comprises a layer of elastomeric material and reinforcing inserts embedded therein, and wherein said reinforcing inserts are filaments which are inclined with reference to said section corner zone.
  • a container defining an internal space arranged to accommo date a supply of comminuted material, said container comprising two mutually inclined side walls having inner sides bounding an elongated corner zone of said internal space in which the material tends to agglomerate; and an agitator comprising a rigid carrier having two mutually inclined panels each secured to the inner side of one of said walls so that said carrier bounds at least a portion of said corner zone, a flexible diaphragm having edge portions sealingly secured to said panels and a median portion extending across said corner zone, said diaphragm and said panels defining between themselves a fluid-receiving chamber, and means for admitting a fluid into said chamber through one of said side walls and through one of said panels to flex the diaphragm against the material in said internal space and to break up eventual agglomerations in said corner zone.
  • a container defining an internal space arranged to accommodate ,a supply of comminuted material, said container comprising tWo mutually inclined side walls having inner sides bounding an elongated corner zone of said internal space in which the material tendsto agglomerate; and an agitator comprising a rigid carrier having two mutually inclined panels each secured to the inner side of one of said walls so that said carrier bounds at least a portion of said corner zone, a flexible diaphragm having edge portions sealingly secured to said panels and a median portion extending across said corner zone, said diaphragm and said panels defining between themselves a fluid-receiving chamber and said diaphragm having a concave side which is in contact with the material in said internal space when the chamber is empty, and means for admitting a fluid into said chamber through one of said side walls and through one of said panels to flex the diaphragm against the material in said internal space
  • a container defining an internal space arranged to accommodate a supply of comminuted material, said container comprising two mutually inclined side walls having inner sides bounding an elongated corner zone of said internal space in which the material tends to agglomerate; and an agitator comprising a rigid carrier having two mutually inclined panels each secured to the inner side of one of said walls so that said carrier bounds at least a portion of said corner zone, said panels comprising elongated stiffeners which are inclined with reference to said corner zone, a flexible diaphragm having edge portions sealingly secured to said panels and a median portion extending across said corner zone, said diaphragm and said panels defining between themselves a fluid-receiving chamber, and means for admitting a fluid into said chamber through one of said side walls and through one of said panels to flex the diaphragm against the material in said internal space and to break up eventual agglomerations in said corner
  • stiffeners are dimensioned in such a way that the resistance of said panels to the flexing action of fluid in said chamber increases in a direction toward said corner zone.
  • a container defining an internal space arranged to accommodate a supply of comminuted material, said container comprising two mutually inclined side walls having inner sides bounding an elongated corner zone of said internal space in which the material tends to agglomerate; and an agitator comprising a rigid carrier having two mutually inclined panels each secured .to the inner side of one of said Walls so that said carrier bounds at least a portion of said corner zone, a flexible diaphragm having edge portions sealingly secured to said panels and a median portion extending across said corner zone, said diaphragm and said panels defining between themselves a fluidreceiving chamber, means for admitting a fluid into said chamber through one of said side Walls and through one of said panels .to flex the diaphragm against the material in said internal space and to break up eventual agglomerations in said corner zone, and valved conduit means communicating with said chamber to permit controlled evacuation of fluid
  • a container defining an internal space arranged to accommodate a supply of comminuted material, said container comprising pairs of mutually inclined side walls having inner sides bounding at least two corner zones of said internal space in which the material tends to agglomerate; and an agitator for each of said corner zones, each agitator comprising a rigid carrier having two mutually inclined sections secured to the inner sides of the respective pair of walls, a flexible diaphragm having edge portions sealingly secured to the corresponding sections and extending across the respective corner zone to define with the corresponding carrier a fluid-receiving chamber, and means for admitting a fluid into each of said chambers to flex the respective diaphragms against the material in said internal space and to break up eventual agglomerations in the respective corner zones.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Filling Or Emptying Of Bunkers, Hoppers, And Tanks (AREA)
  • Bedding Items (AREA)
US403527A 1963-12-02 1964-10-13 Agitator for granular materials and the like Expired - Lifetime US3273761A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEC31559A DE1189018B (de) 1963-12-02 1963-12-02 Entleerungsvorrichtung fuer Schuettgutbehaelter

Publications (1)

Publication Number Publication Date
US3273761A true US3273761A (en) 1966-09-20

Family

ID=7019876

Family Applications (1)

Application Number Title Priority Date Filing Date
US403527A Expired - Lifetime US3273761A (en) 1963-12-02 1964-10-13 Agitator for granular materials and the like

Country Status (7)

Country Link
US (1) US3273761A (de)
AT (1) AT246650B (de)
BE (1) BE649580A (de)
CH (1) CH431384A (de)
DE (1) DE1189018B (de)
GB (1) GB1028538A (de)
NL (1) NL6413612A (de)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4421250A (en) * 1981-04-27 1983-12-20 Bonerb Timothy C Bin for free flowing material
USRE32232E (en) * 1981-04-27 1986-08-26 Bin for free flowing material
US4735457A (en) * 1986-12-24 1988-04-05 Bonerb Vincent C Freight vehicle with a convertible cargo space
US5183086A (en) * 1990-08-27 1993-02-02 Allwaste Services, Inc. Encapsulation method for the containment of waste and salvageable products
WO1993022225A1 (de) * 1992-05-06 1993-11-11 Nuescheler Rudolf Schüttgutsilo
US5489037A (en) * 1991-07-30 1996-02-06 Insta-Bulk, Inc. Container liner system for bulk transfer
US20060175324A1 (en) * 2005-02-10 2006-08-10 Powertex, Inc. Braceless liner
US20060186117A1 (en) * 2005-02-24 2006-08-24 Powertex, Inc. Discharge apparatus for a shipping container
US20070193649A1 (en) * 2006-02-17 2007-08-23 Podd Stephen D Pressure differential manlid and method of discharging a shipping container using a pressure differential
US20080257893A1 (en) * 2007-04-19 2008-10-23 Podd Stephen D Bulk liquid transport system
US8162164B2 (en) 2007-04-19 2012-04-24 Podd Stephen D Bulk liquid transport system

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH492625A (de) * 1969-12-19 1970-06-30 Alusuisse Entleerungsvorrichtung für Behälter

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2968425A (en) * 1956-12-07 1961-01-17 Mervan & Co Dischargeable bin with slopable floor
US3158296A (en) * 1962-03-08 1964-11-24 Cornelius Co Fluid storage and discharge apparatus
US3170600A (en) * 1962-12-04 1965-02-23 Us Rubber Co Collapsible container
US3202461A (en) * 1962-12-27 1965-08-24 Granu Flow Equipment Ltd Raisable fluidizing strip container discharge mechanisms

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2968425A (en) * 1956-12-07 1961-01-17 Mervan & Co Dischargeable bin with slopable floor
US3158296A (en) * 1962-03-08 1964-11-24 Cornelius Co Fluid storage and discharge apparatus
US3170600A (en) * 1962-12-04 1965-02-23 Us Rubber Co Collapsible container
US3202461A (en) * 1962-12-27 1965-08-24 Granu Flow Equipment Ltd Raisable fluidizing strip container discharge mechanisms

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4421250A (en) * 1981-04-27 1983-12-20 Bonerb Timothy C Bin for free flowing material
USRE32232E (en) * 1981-04-27 1986-08-26 Bin for free flowing material
US4735457A (en) * 1986-12-24 1988-04-05 Bonerb Vincent C Freight vehicle with a convertible cargo space
US5183086A (en) * 1990-08-27 1993-02-02 Allwaste Services, Inc. Encapsulation method for the containment of waste and salvageable products
US5489037A (en) * 1991-07-30 1996-02-06 Insta-Bulk, Inc. Container liner system for bulk transfer
WO1993022225A1 (de) * 1992-05-06 1993-11-11 Nuescheler Rudolf Schüttgutsilo
US20060175324A1 (en) * 2005-02-10 2006-08-10 Powertex, Inc. Braceless liner
US7506776B2 (en) 2005-02-10 2009-03-24 Powertex, Inc. Braceless liner
US20060186117A1 (en) * 2005-02-24 2006-08-24 Powertex, Inc. Discharge apparatus for a shipping container
US20070193649A1 (en) * 2006-02-17 2007-08-23 Podd Stephen D Pressure differential manlid and method of discharging a shipping container using a pressure differential
US20080257893A1 (en) * 2007-04-19 2008-10-23 Podd Stephen D Bulk liquid transport system
US8162164B2 (en) 2007-04-19 2012-04-24 Podd Stephen D Bulk liquid transport system

Also Published As

Publication number Publication date
NL6413612A (de) 1965-06-03
CH431384A (de) 1967-02-28
GB1028538A (en) 1966-05-04
AT246650B (de) 1966-04-25
BE649580A (de) 1964-10-16
DE1189018B (de) 1965-03-11

Similar Documents

Publication Publication Date Title
US3273761A (en) Agitator for granular materials and the like
US2646905A (en) Inflatable panel assembly for storage bins
US1570795A (en) Storage bin or hopper
US3396762A (en) Methods of densifying and deterring deterioration and contamination of discrete particle material in a container
EP0248830B1 (de) Förderbehälter zur spedition von massengut
US3099497A (en) Pneumatic conveyor for pulverant materials
US4728004A (en) Material-handling and discharge bin of the type having a fluid-expandable flexible membrane for discharge assistance
US2609125A (en) Self-unloading bin
US4884723A (en) Hard gasket for retrofit installation on hopper outlet/hopper gasket outlet
US5685688A (en) Multi-stage inflatable floor bed for container or container liner
US3502240A (en) Membrane edge-attaching structure
US4880147A (en) Air blast generator
US3958722A (en) Self indexing elbow
US4939850A (en) Method and apparatus to conduct fluidization of cohesive solids by pulsating vapor flow
US4172538A (en) Transport and storage container for fluent or fluidizable material
US4199282A (en) Unloading system having vibratory bin discharge structure
US3424352A (en) Apparatus for discharge and cleanout of pulverulent material from tank cars
US3202461A (en) Raisable fluidizing strip container discharge mechanisms
US5067252A (en) Method and apparatus to conduct fluidization of cohesive solids by pulsating vapor flow
US3874641A (en) Agitator assembly for a discharge hopper
US4938637A (en) Method and apparatus for bottom loading a pneumatic transport pressure vessel
US3348589A (en) Pneumatic loading apparatus
US3226166A (en) Pneumatic apparatus for handling pulverulent materials
US7997556B2 (en) Fine adjustable firing valve
US2889963A (en) Vehicle hopper discharge control