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Publication numberUS2987216 A
Publication typeGrant
Publication dateJun 6, 1961
Filing dateJul 10, 1959
Priority dateJul 10, 1959
Publication numberUS 2987216 A, US 2987216A, US-A-2987216, US2987216 A, US2987216A
InventorsFletcher Robert S
Original AssigneeFletcher Robert S
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Disposable liner for a container
US 2987216 A
Abstract  available in
Previous page
Next page
Claims  available in
Description  (OCR text may contain errors)

June 6, 1961 R. s. FLETCHER 2,987,216


ATTORN EYS United States Patent 2,987,216 DISPOSABLE LINER FOR A CONTAINER Robert S. Fletcher, 206 Doyle Ave., Providence 6, RJ. Filed July 10, 1959, Ser. No. 826,326 4 Claims. (Cl. 220-39) This invention relates to utilization of a disposable liner for a container and a structure for adapting such a liner to existing containers or new containers.

Containers of various sorts are used throughout industry and one of the standards which has become widely used is the 55 gallon drum. While this invention is not necessarily limited to use with a 55 gallon drum, the disclosure will however be primarily directed thereto for illustrative purposes. In using these 55 gallon drums or other containers, it has been found that many times they may be reused over and over again as they are really a capital item and not a disposable or expendable item. Accordingly, it has become the practice in the industry to clean these drums after they have been used so that they will then be ready to accept any new material or even the same material and not contaminate this material. To accomplish this result, it will be appreciated that a large inventory of containers is necessary for there is a problem of storing the containers with the filled liquid, having other containers which perhaps are in transit either in an empty condition or with a new liquid, and a third set of containers which are at the cleaning plant. It will further be appreciated that this number of containers involves a tremendous amount of handling and a consequent use of valuable storage and/or loading dock space, which could be put to other uses.

It is accordingly an object of the present invention to reduce the number of containers which must be kept on hand at any one time and to simplify the handling thereof by providing a means for using a disposable inner liner in conjunction with a standard container.

It is a further object of the invention to provide a special insert for the opening in a barrel or drum which insert will carry with it means for locking a liner to the barrel or drum.

A further object of the invention is to utilize an inner liner in the form of a bag with a neck portion which neck portion will be used to hold the bag in position within the opening.

With these and other objects in view, the invention consists of certain novel features of construction as will be more fully described and particularly pointed out in the appended claims.

In the accompanying drawings:

FIGURE 1 is a perspective view of the standard drumtype container;

FIGURE 2 is a perspective View of a liner member;

FIGURE 2A is a perspective view of an alternate liner member;

FIGURE 3 is an exploded sectional view taken taken diammetrically through the opening in the container, showing the cap, the new insert and holding means with the liner in position;

FIGURE 4 is an enlarged fragmentary View of an alternate form of opening which has been originally made in the container to accept the disposable liner;

FIGURE 5 is a perspective view of the split ring which is used to hold the liner in position;

FIGURE 6 is a top view of the assembly of FIGURE 3 showing the cap screwed into position.

In proceeding with this invention, I first forge or otherwise -form a ring-shaped threaded member which carries a radially inner lip forming a radially inner groove. This member is formed with a flange for the purpose of screwing it into position and has associated therewith a split Patented June 6, 1961 ring which is received in the radially inner groove. There is also provided a flexible liner having a reduced neck portion, the flexible liner being made out of a material which is capable of either being stretched to a considerable degree or folded into such a way as to expand and still retain great tensile strength and freedom from rupture. This liner is then utilized in conjunction with the ring member and the split ring, the liner being forced in through the ring member and secured in place at the neck portion thereof by the split ring whereupon excess neck material of the liner may be cut off so that the ring member may receive a suitable sealing cap.

Referring now to the drawings, there is shown in FIG URES 2 and 2A liners 10 and 10' which are elastic and flexible respectively. Both liners are provided with a neck portion 11, the entire structure being adapted to be passed into the container such as a drum 12 through the opening of one wall thereof, such as the opening 13. It is intended that existing containers may be modified so as to accept the liner and to this end, I have provided a threaded ring member insert generally designated 14 (FIG. 3) which consists of an internally and externally threaded ring 15 with a flange end 16. The external threads on the ring are cut so that they will mate with the existing threads in the boss 17 that is present in connection with the container opening. The internal threads on the other hand are merely cut so that they will mate with a cap 18 which is furnished for use with the device. The lower end of the ring member remote from the flange 16 is provided with a lip 19 which forms a channel 20 for the reception of the neck 11 of the liner. To this end, a split ring fastener 21 (FIG. 5) may be provided which will securely hold the neck of the liner in position.

Accordingly, in using this invention, it would first be necessary to insert the part 14 into the existing opening within the container and place a gasket such as 22 between the flange 16 and the upper portion of the boss 17. Through the use of a spanner wrench which could engage apertures 23 within the flange 16, the fitting may be tightened in the opening. At this point the liner 10 may be forced through the ring member and neck 11 fitted around into the groove 20 and securely held as shown in the drawing by the split ring 21. After the neck 11 of the liner is seated a knife may be used to cut oil the excess material so that a sealing cap such as 18 may be utilized. The sealing cap 18 is of usual construction and is provided with a depressed portion such as 25 into which two lugs 26 are formed so that a simple tool such as a wrench may be used to tighten the plug into position. Also the plug 18 is provided with overhanging flange portion such as 27 under which a gasket such as 28 may be received for providing a liquid-tight seal.

When it becomes necessary to fill the container, the pressure of the liquid being forced into the container will be suflicient to expand the liner 10 so that the liner 10 completely contacts the walls thereof forming little or no void areas. To accomplish this result, it is of course necessary that the liner be made out of a suitable material, of which there are several new on the market, that will exhibit the necessary properties of remaining intact and yet permit considerable elasticity or flexibility. It will be realized that once the contents are poured out of the container, the liner will resume its original shape to a substantial extent, and in this condition it may be readily withdrawn from the container.

It is of course envisioned that it will not be necessary to utilize an insert piece to hold the removable liner in place, and to this end, the permanent ring member shown in FIGURE 4 comprises an internally threaded ring which is provided with an inner lip structure 19' providing a groove 20'. As in the previous embodiment the groove 3 20' receives a split ring 21' The permanent ring structure, however, differs in some other features in that it hasran external flange 30 that is adapted to be rolled over the edge of the barrel material, and in order to hold the barrel material'in place, together with a gasketing such as 31, an external collar 32 is provided. It will be apparent, therefore, that there is disclosed herein a means for retaining an expandable liner in place within a container such as a drum or the like, which construction facilitates the easy removal of the liner and replacement thereof.

I claim:

I 1. In combination with a container having a wall with an opening therethrough for communication with the interior thereof, a ring member received in the opening and secured to the wall at the periphery thereof, said ring member having a radially inwardly extending lip portion at its inner end with an upwardly opening annular groove, a resilient liner adapted for removable insertion in said container, said liner having a neck section integral therewith and projecting through the ring member, an expansion ring inserted within the neck section expanding the same and fastening the neck into the said annular groove, and a cap for closing the ring member and sealing means between the cap'and ring member and contacting the outer end of the ring member for sealing the same independently of said liner.

- 2. A structure as in claim 1 wherein said ring member is internally and externally threaded and wherein the opening in the wall of said container is provided with an interiorly threaded boss for receiving said'ring member.

3. In combination with a container having a wall with that holds the liner in place.

2,987,216 v p r a, q

4 ,7 an opening therethrough for communication with the interior thereof, an interiorly threaded ring member received in the opening and secured to the wall at the periphery thereof, said ring member having a flange at its outer end thereof and a radially inwardly extending lip at the inner end thereof, said lip forming an annular upwardly opening groove, a resilient liner adapted for removable insertion in said container, said liner having a neck section integral therewith and projecting through the ring member, an expansion ring inserted within the neck section expanding the same and fastening into the said annular groove and an externally threaded cap received within said ring member to close the opening therethrough and sealing means between the cap and said flange for sealing the same independently of said liner.

4. A structure as in claim 2 wherein said ring member has 'exteriorly exposed gripping means and said closing means comprises a cap having exteriorly exposed gripping means whereby said gripping means may both be engaged for relative rotation with reference to .each other while holding the ring member relative to the opening in the wall of the container.

References Cited in the file of this patent UNITED STATES PATENTS 1,540,554 Grifiiths June 2, 1925 2,652,172 Negola Sept. 15, 1953 FOREIGN PATENTS 648,863 Great Britain Jan. 17, 1951 662,970 France Mar. 29, 1929 869,910 Germany Mar. 9, 1953

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US1540554 *Oct 2, 1924Jun 2, 1925Miller Rubber CoAcid-proof container
US2652172 *Oct 30, 1951Sep 15, 1953Drumboy IncLiner support and closure for acid resistant drums
DE869910C *Dec 19, 1951Mar 9, 1953Mauser KgSpundverschluss
FR662970A * Title not available
GB648863A * Title not available
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US3207356 *Aug 14, 1962Sep 21, 1965American Flange & MfgClosure plug
US3262628 *Jan 9, 1963Jul 26, 1966Container CorpShipping container
US3377766 *Jun 8, 1965Apr 16, 1968Strecton Ind IncLined containers
US3590888 *Dec 5, 1966Jul 6, 1971Clarence B ColemanComposite container and method of handling fluent materials
US3779419 *Feb 10, 1971Dec 18, 1973Heitz CHolder for flexible receptacle liners
US3917115 *Mar 15, 1974Nov 4, 1975Amf IncDiving cylinder with liner
US4023701 *Nov 24, 1975May 17, 1977Dockery Denzel JBreathing apparatus for underwater use
US4313400 *Apr 22, 1980Feb 2, 1982Amtrol Inc.Lined metal tank with heat shield, indirect fired water heater and method of making same
US4537329 *Apr 2, 1984Aug 27, 1985Culligan International CompanyTank lining system
US4753367 *Oct 19, 1987Jun 28, 1988Mobil Oil CorporationWastebasket and inner liner retainer
US4776478 *Oct 19, 1987Oct 11, 1988Mobil Oil CorporationWastebasket with inwardly swinging lid
US4789078 *Oct 19, 1987Dec 6, 1988Mobil Oil CorporationWastebasket with lid catch
US5056680 *Jul 17, 1987Oct 15, 1991Sharp Bruce RAttachment assembly for secondary containment tanks
US5154308 *Jul 19, 1991Oct 13, 1992Safety-Kleen CorporationDetachable cover and drum liner for storage and transport of controlled materials
US5158200 *Jun 7, 1991Oct 27, 1992State Industries, Inc.Tank connector construction and method of fabrication
US5169019 *Mar 11, 1991Dec 8, 1992Buedenbender BerndInternally lined bung-type container
US5255492 *Oct 13, 1992Oct 26, 1993Safety-Kleen CorporationDetachable cover and drum liner for storage and transport of controlled materials
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US6216907 *Dec 13, 1999Apr 17, 2001Joseph Gilles MorneauDrum liner system
US6357617 *Dec 4, 1998Mar 19, 2002Toyota Jidosha Kabushiki KaishaHollow resin container
US7634896 *Dec 4, 2007Dec 22, 2009Hecht Anlagenbau GmbhLiner connecting device and liner filling device
US20120260905 *Apr 15, 2011Oct 18, 2012Jensen Metal Products, Inc.Liquid-Fuel Burner with Brick Member
EP0595991A1 *Jul 16, 1992May 11, 1994Safety Kleen CorpDetachable cover and drum liner for storage and transport of controlled materials.
WO1988008401A1 *Apr 25, 1988Nov 3, 1988Michael J ReardonDrum liner
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WO2000037332A1 *Dec 21, 1999Jun 29, 2000Poetzsch HolgerInliner for transport containers
WO2000037333A1 *Dec 21, 1999Jun 29, 2000Poetzsch HolgerTransport container for dangerous liquids
U.S. Classification220/295, 220/495.5, 383/112
International ClassificationB65D77/06, B65D39/08, B65D39/00
Cooperative ClassificationB65D39/086, B65D77/06
European ClassificationB65D39/08A2, B65D77/06