EP0540083A1 - Ensemble de positionnement et verrouillage pour chemisage de fût - Google Patents

Ensemble de positionnement et verrouillage pour chemisage de fût Download PDF

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Publication number
EP0540083A1
EP0540083A1 EP92203172A EP92203172A EP0540083A1 EP 0540083 A1 EP0540083 A1 EP 0540083A1 EP 92203172 A EP92203172 A EP 92203172A EP 92203172 A EP92203172 A EP 92203172A EP 0540083 A1 EP0540083 A1 EP 0540083A1
Authority
EP
European Patent Office
Prior art keywords
drum
liner
fitting
lid
thread
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Withdrawn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
EP92203172A
Other languages
German (de)
English (en)
Inventor
William Lima
Earl V Lind
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.)
Russell Stanley Corp
Original Assignee
Russell Stanley Corp
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 Russell Stanley Corp filed Critical Russell Stanley Corp
Publication of EP0540083A1 publication Critical patent/EP0540083A1/fr
Withdrawn legal-status Critical Current

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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
    • B65D25/00—Details of other kinds or types of rigid or semi-rigid containers
    • B65D25/14—Linings or internal coatings
    • B65D25/16—Loose, or loosely-attached, linings
    • 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
    • B65D39/00—Closures arranged within necks or pouring openings or in discharge apertures, e.g. stoppers
    • B65D39/08—Threaded or like closure members secured by rotation; Bushes therefor
    • B65D39/082—Bung-rings and bungs for bung-holes
    • B65D39/086—Separated bung-rings made by several elements

Definitions

  • This invention relates to drum liners which are placed inside of drums to hold hazardous material. More particularly, the invention relates to drum liners which can not be removed from the drum unless the lid of the drum is destructively removed.
  • a typical drum is a fifty five gallon drum formed of steel. More recently fifty five gallon drums formed of plastic materials have become common. Both the steel and plastic drums have conventional offset bung holes in the top or lid through which the drums are filled and emptied and vent holes diametrically opposed to the bung holes.
  • drums whether steel or plastic have customarily been reconditioned for reuse.
  • an entire industry exists to remove all traces of the contents of the drums and safely dispose of the contents.
  • the problem of disposing of the contents in the drums and the liquids used to recondition the drums in an ecologically safe manner has arisen. Consequently, destroying and recycling the drum instead of reconditioning the drum is less detrimental to the environment because hazardous chemicals which damage the environment are not used.
  • a further objective of the invention is to ensure that the drum is destroyed when the liner is removed from the drum so that the drum must be recycled instead of being reconditioned.
  • a drum liner apparatus associated with a drum is comprised of a fitting that passes through the conventional opening in the lid of a drum, a flexible liner that attaches to the fitting and means to secure the fitting to the opening in the lid of the drum.
  • the fitting has a collar with one thread on the outer surface and two separations in the thread. One separation is wider than the other separation and the thread on the outer surface of the fitting is at an angle.
  • the fitting also has an upper and a lower flange. The upper flange has serrations on the top surface and the lower flange serves to attach the flexible liner to the fitting.
  • the means for securing the fitting to the opening in the lid of a drum comprises a lock nut which has a single thread with two separations on the interior surface.
  • the nut thread interconnects with the thread on the outer surface of the fitting collar.
  • the thread located on the interior surface of the nut is at an angle opposite to the thread of the outer surface of the fitting.
  • the nut is further comprised of a single continuous array of ratchet boxes located along the periphery of the bottom interior surface of the nut.
  • the opening in the lid of the drum has two protrusions, wherein the first protrusion is wider than the second protrusion and the protrusions have tabs which bend upwardly from the lid. These tabs interact with the ratchet boxes of the nut to maintain the liner assembly in a fixed non-removable condition on the drum.
  • the invention provides a method for attaching the drum liner to a drum comprising the steps of inserting the fitting collar into an opening in the lid of the drum and securing the drum liner to the drum. Attachment of the drum liner to the lid of the drum is effected by aligning the respective separations in the thread in the drum liner fitting with the appropriate respective protrusions in the opening in the lid of the drum.
  • Securing the drum liner to the drum is completed by placing the lock nut over the drum liner fitting, turning the nut onto the fitting such that the threads of the nut and liner fitting interconnect with each other and the liner fitting is raised to the top of the drum.
  • the ratchet boxes on the lower portion of the nut then bear against the tabs in the lid of the drum as the liner fitting is raised to the top of the drum.
  • the tabs bear against the ratchet boxes thereby permanently securing the fitting to the drum lid.
  • the drum liner assembly 1 is primarily comprised of a fitting 2, a liner 14, a lock unit 20 which fastens the fitting 2 to a drum 3 and an opening 32 in the top 30 of the drum 3 through which the fitting 2 passes.
  • the fitting 2 of the drum liner assembly 1 is comprised of a collar 9 with a single thread 6 on the exterior surface of the fitting 2.
  • the separations 5 and 7 can be located anywhere along the thread 6.
  • the thread 6 on the exterior surface of the fitting 2 is also at an angle along the exterior surface.
  • the fitting 2 and liner 14 are attached to the lower flange 12.
  • the fitting 2 and liner 14 may be either integrally formed for example, by means of a typical blow-molding operation or may be separately formed and thereafter fused or otherwise adhered together.
  • the interior surface of the fitting 2 is provided with conventional threads 4 found in the bung hole of a drum.
  • the threads 4 are adapted to receive the mating threads of a filling or vacuum device.
  • the lock nut 20, best seen in FIGURES 2, 3 and 4 is provided with a single thread 22 on the interior surface of the nut 20.
  • the thread 22 located on the interior surface of the nut 20 is at an angle opposite to the thread 6 on the outer surface of the fitting 2.
  • the openings 24 and 26 can be located anywhere along the circumference of the nut 20, however are preferably located diametrically opposed to each other and are of the same width.
  • the location of the openings 24, 26 are selected to align with the separations 5 and 7 in the thread 6 located on the exterior surface of the fitting 2.
  • the nut 20 is further comprised of a continuous array of ratchet boxes 28 which are located along the bottom interior periphery of the nut 20.
  • the ratchet boxes 28 are individually configured with an inclined surface 27 and a vertical wall 29 at the end of each inclined surface 27, as best seen in FIGURE 2.
  • the drum 3 in which the drum liner 1 is placed has an opening 32 in the top or lid 30 of the drum 3 as seen in FIGURE 6.
  • the opening 32 in the lid 30 of the drum 3 is located on the lid 30 of the drum 3 at the conventional bung hole location.
  • the opening 32 in the lid 30 of the drum 3 has two protrusions 34, 36.
  • One protrusion 34 is wider than the other protrusion 36 and can be located anywhere along the circumference of the opening 32, preferably diametrically opposed to the protrusion 36.
  • the protrusions 34 and 36 must be oriented to align with the respective separations 5 and 7 in the thread 6 on the fitting 2.
  • protrusions 34 and 36 that extend into the opening 32 of the lid 30 cooperate with the separations 5 and 7 in the fitting 2 to insure the correct positioning of the liner 14 inside the drum 3. Additionally, as best seen in FIGURES 8 and 9, tabs 38 are cut in the protrusions 34 and 36 and bend upwardly from a bend line 31 on each protrusion 34 and 36. The tabs 38 are in alignment with the ratchet boxes 28 formed on the inner periphery of the lock nut 20.
  • the fitting 2 of the drum liner assembly 1 is secured to the lid 30 of the drum 3 before the lid 30 is attached to the drum 3.
  • the fitting 2 of the drum liner assembly 1 is configured to protrude through the opening 32 in the lid 30 of the drum 3.
  • the fitting 2 is preferably only slightly smaller in diameter than the opening 32 in the lid of the drum 3.
  • a gasket 16 is placed over the collar 9 of the fitting 2 on the serrations or teeth 10 of the upper flange 8. The gasket 16 helps form a tighter seal between the lid 30 of the drum 3 and the fitting 2.
  • the openings 5 and 7 in the thread 6 of the fitting 2 must be aligned with the appropriate respective protrusions 34 and 36 that extend into the opening 32 in the lid 30 of the drum 3. This alignment insures that the orientation of the liner 14 inside of the drum 3 is appropriate to enable the liner 14 to expand properly. Because the opening 32 in the lid 30 of the drum 3 is never located in the center of the lid 30, the drum liner 14 is not symmetrical about the fitting 2. The fitting 2 is attached to the liner 14 at a location that allows the liner 14 to expand to take on the shape of the drum 3 without imposing stress on the liner 14 or fitting 2. If the liner 14 is not aligned correctly, the liner 14 will not expand to its fullest extent and the drum 3 will not be able to hold the required amount of material.
  • the lock nut 20 is placed over the collar 9 of the fitting 2 to secure the fitting 2 to the lid 30 of the drum 3.
  • the nut 20 is positioned to allow the thread 6 of the fitting 2 and the thread 22 of the nut 20 to interconnect with each other.
  • the gasket 16 is forced up against the inside surface of the lid 30 of the drum 3.
  • the upper flange 8 provides the bearing surface for the gasket 16 and thereby prevents the liner section which is attached to the lower flange 12 from being compressed against the inside surface of the lid 30 of the drum 3. Additionally, by the gasket 16 being forced against the lid 30 of the drum 3 the problem of material leaking between the drum 3 and the liner 14 is alleviated.
  • a seal cap 41 can be placed over the collar 9 of the fitting 2.
  • the drum liner 1 may be formed of any one of a number of materials known in the art such as polyethylene and the drum 3 in the preferred embodiment is formed of steel to provide the most suitable structural material for the tabs 38 that must serve as the reaction member to resist reversal of the lock nut 20.
  • suitable dimensions for the assembly are an opening 32 in the lid 30 of approximately 2.95 inches in diameter, protrusions 34 and 36 that are .500 and .375 inches wide and tabs 38 are .187 inches wide and extend .100 inches inwardly from the bend lines 31 on the protrusions 34 and 36.
  • the thread 6 that travels along the exterior surface of the fitting 2 is a left hand thread which is angled downwardly at a pitch of eight turns per inch.
  • the two respective openings 5 and 7 in the thread 6 correspond in size and location to the protrusions 34, 36 that extend into the opening 32 in the lid 30 of the drum 3.
  • each thread 4 along the interior surface of the fitting 2 extend approximately .06 inches from the interior surface of fitting 2, each thread travels approximately .007 inches along the interior surface of the fitting 2 and the flat portion of each thread which is parallel with the interior surface of the fitting 2 is approximately .011 inches.
  • the fitting 2 has a collar 9 with an outside diameter of 2.94 inches, a lower flange 12 of 4.75 inches diameter and .045 inch thickness and an upper flange 8 of 4.0 inch diameter, .142 inch thickness and teeth or serrations 10 of .02 inches high.
  • the recited dimensions provide a fitting 2 that can be safely secured to the lid 30 of a drum 3 without subjecting the liner 14 to compressive forces from the inside surface of the lid 30 of the drum 3 that might cause abrasion or wear.
  • the lock nut 20 As for the lock nut 20, it is sized to thread onto the 2.94 inch fitting outside diameter.
  • the thread 22 along the interior surface of the lock nut 20 is positioned .164 inches below the top of the lock nut 20 and extends .120 inches from the interior surface of the lock nut 20.
  • This thread 22 is also at an angle which has a pitch of approximately 8 turns per inch so as to interconnect with the thread 6 of the fitting 2.
  • the two openings 24, 26 in the thread 22 are essentially diametrically opposed and of the same width, approximately .500 inches. Additionally, there are approximately 60 ratchet boxes 38 along the edge of the nut 20.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rigid Containers With Two Or More Constituent Elements (AREA)
  • Closures For Containers (AREA)
  • Preparation Of Clay, And Manufacture Of Mixtures Containing Clay Or Cement (AREA)
EP92203172A 1991-10-29 1992-10-15 Ensemble de positionnement et verrouillage pour chemisage de fût Withdrawn EP0540083A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US78451691A 1991-10-29 1991-10-29
US784516 1991-10-29

Publications (1)

Publication Number Publication Date
EP0540083A1 true EP0540083A1 (fr) 1993-05-05

Family

ID=25132675

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92203172A Withdrawn EP0540083A1 (fr) 1991-10-29 1992-10-15 Ensemble de positionnement et verrouillage pour chemisage de fût

Country Status (2)

Country Link
EP (1) EP0540083A1 (fr)
CA (1) CA2080325C (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2746149A1 (fr) * 1996-03-13 1997-09-19 Harry Plast Dispositif de fixation amovible sur une paroi rigide d'une piece delimitant une ouverture dans une paroi souple
EP0894734A1 (fr) * 1997-07-30 1999-02-03 Harry-Plast S.A. Dispositif de fixation amovible sur une paroi rigide d'une pièce délimitant une ouverture dans une paroi souple

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1956135A (en) * 1932-03-01 1934-04-24 Paul H Schmitz Closure for metallic containers and the like
FR1254911A (fr) * 1957-11-08 1961-03-03 Astra Apotekarnes Kem Fab Dispositif de verrouillage pour couvercles se vissant sur des pots ou autres récipients
FR1331437A (fr) * 1962-05-21 1963-07-05 Cie Ind De Materiel D Aviat Réservoir pour matières agressives et dispositif de fermeture
GB985919A (en) * 1960-08-26 1965-03-10 Continental Can Co Fitting for dispensing liquids from drums
WO1991010597A1 (fr) * 1990-01-16 1991-07-25 Scholle Corporation Ensemble de chemisage pour fut

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1956135A (en) * 1932-03-01 1934-04-24 Paul H Schmitz Closure for metallic containers and the like
FR1254911A (fr) * 1957-11-08 1961-03-03 Astra Apotekarnes Kem Fab Dispositif de verrouillage pour couvercles se vissant sur des pots ou autres récipients
GB985919A (en) * 1960-08-26 1965-03-10 Continental Can Co Fitting for dispensing liquids from drums
FR1331437A (fr) * 1962-05-21 1963-07-05 Cie Ind De Materiel D Aviat Réservoir pour matières agressives et dispositif de fermeture
WO1991010597A1 (fr) * 1990-01-16 1991-07-25 Scholle Corporation Ensemble de chemisage pour fut

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2746149A1 (fr) * 1996-03-13 1997-09-19 Harry Plast Dispositif de fixation amovible sur une paroi rigide d'une piece delimitant une ouverture dans une paroi souple
EP0894734A1 (fr) * 1997-07-30 1999-02-03 Harry-Plast S.A. Dispositif de fixation amovible sur une paroi rigide d'une pièce délimitant une ouverture dans une paroi souple

Also Published As

Publication number Publication date
CA2080325A1 (fr) 1993-04-30
CA2080325C (fr) 1996-01-09

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