WO2003070586A1 - A octagonal clinched drum top - Google Patents

A octagonal clinched drum top Download PDF

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Publication number
WO2003070586A1
WO2003070586A1 PCT/IN2002/000031 IN0200031W WO03070586A1 WO 2003070586 A1 WO2003070586 A1 WO 2003070586A1 IN 0200031 W IN0200031 W IN 0200031W WO 03070586 A1 WO03070586 A1 WO 03070586A1
Authority
WO
WIPO (PCT)
Prior art keywords
drum top
octagonal
clinched
drum
flange
Prior art date
Application number
PCT/IN2002/000031
Other languages
French (fr)
Inventor
Sudarshan Madhoprasad Saraf
Original Assignee
Sudarshan Madhoprasad Saraf
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 Sudarshan Madhoprasad Saraf filed Critical Sudarshan Madhoprasad Saraf
Priority to AU2002253502A priority Critical patent/AU2002253502A1/en
Publication of WO2003070586A1 publication Critical patent/WO2003070586A1/en

Links

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
    • 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
    • B65D39/084—Separated bung-rings made by one element

Definitions

  • the invention relates to a octagonal clinched drum top. More particularly the invention relates to a octagonal clinched drum top which is clinched with the flanges to prevent leaking of the contents inside due to any external impact in any orientation.
  • Drums made from mild steel of 205 liters or 55 gallons employ threaded drum closers which is a standard in world market as a standard product and various countries have now adopted the same by their national standard.
  • JAPAN JIS - Z 1604
  • capseal prevents leakage from leaky bung. Capseal also prevents tempering of drum to retain the quality of product inside the drum.
  • drum tops are made from mild steel which are fitted with internally threaded flanges that are curled on the drum top with gasket in between to provide leak proof assembly.
  • drum top and flange may separate easing off pressure and rubber gasket thus causing leakage.
  • duing reconditioning the drum is burnt to obtain clean surface inside. During the burning process the flange gasket gets burnt out and therefore sealing is lost.
  • the reconditioner has two options now one is to change drum top and other is to use a reconditioned bung but the second option prevents sealing of the drum.
  • the clinching prevents seperation of the top sheet from octagonal flat portion of flange, thereby pressure on flange gasket is not released, hence no leakage.
  • the principal object of the invention is to provide an octagonal clinched drum top to protect sealing of drum during impact and to allow reconditioner to maintain same drum head by use of recondition bung and octagonal capseal.
  • Still another object of the invention is to provide a octagonal clinched drum top which is pilferproof with a special octagonal cap seal.
  • a octagonal clinched drum top (1) refer Fig. 3 comprising the drum top (1) which covers the flanges (2) the said flange (2) curled over the neck (3) of the drum top.
  • Flange has inner threading (5) and drum top extends below the flange at (6); the said drum top clinched (7) over the octagonal base of the flange there is provided a gasket (8) in between the flange and the drum top which is of any resilient material preferably rubber provided in a leakproof manner so that leaking is prevented from a sudden impact due to the dropping of the drum in any orientation.
  • Fig.l is a plan and sectional view of the conventional drum top.
  • Fig.2 is a sectional view of a octagonal clinched drum top before drop testing and after drop testing.
  • Fig.3 is a plan and sectional of a octagonal clinched drum top.
  • Fig.4 is a plan and sectional view of octagonal clinched drum top, with recondition bung and octagonal topseal.
  • Fig.5 is a 50mm cap seal of clinching assembly.
  • Fig. 6 is 50mm flange clinching die assembly.
  • the drum After the insertion of the flange and assembling drum with drum shell the drum is tested for leakage test after filling the with specified amount of water and then drop it for specific height.
  • drum top separates from the flange thereby easing pressure on flange gasket and thereby causing a leak.
  • a clinched drum top however prevents separation of drum top from the flange thereby not allowing leakage take place.
  • Fig. 6 It is desired to patent special clinching process of fitting flange on drum top die (Fig.6) and special octagonal capseal to crimp on octagonal face shape of the drum top that goes over flange and tool for crimping this capseal (Fig.5)
  • Fig. 3 shows drum head with clinched flange wherein by special die, drum top goes over and under the flange so that in case of impact it does not separate from flange and cause flange gasket to leak.
  • drums When drums are to be reused they are burnt during reconditioning causing flange gasket to burn. Leakage can be stopped from bung opening as well as from the portion between drum head and flange by use of reconditioning bung.
  • Recondition bung is given in Fig. 4 and drawing of the assembly is also shown in Fig. 4.
  • drum cannot be sealed with a conventional capseal.
  • the octagonal crimp shall allow a special octagonal capseal to be used over reconditioning plug so that sealing shall be made possible therefore drum reconditioner of actagonally clinched drum head need not take off drum head and fit in new head during reconditioning.
  • a octagonal clinched drum top alongwith its capseal will improve the reliability of the leakproofness of existing drum particularly in case of accident and will improve pilferproofness also.
  • the present invention thus effectively can be used for preventing the leakage by separation of drum top from the flanges due to sudden impact.
  • the use of recondition plugs alongwith special octagonal capseal is also a unique feature whereby the replacement of drum top is avoided at the time of reconditioning.
  • the invention is cost effective, easy to manufacture above all retains the goodwill of the manufacturer.

Abstract

A octagonal clinched drum top (1) comprising the drum top (1) which covers the flanges (2) the said flange (2) curled (4) over the neck (3) of the drum top which have inner threading (5) and extends below the drum top at right angle (6); the said drum top clinched (7) over the octagonal base of the flange there is provided a gasket (8) in between the flange and the drum top which is of any resilient material preferably rubber provided in a leakproof manner sot that leaking is prevented from a sudden impact due to the dropping of the drum in any orientation.

Description

A OCTAGONAL CLINCHED DRUM TOP
The invention relates to a octagonal clinched drum top. More particularly the invention relates to a octagonal clinched drum top which is clinched with the flanges to prevent leaking of the contents inside due to any external impact in any orientation.
Drums made from mild steel of 205 liters or 55 gallons employ threaded drum closers which is a standard in world market as a standard product and various countries have now adopted the same by their national standard.
ISO has come out with draft standard. Following are the specification numbers of this product.
INDIA : IS 1784
JAPAN : JIS - Z 1604
U.S.A. : PP - 420 - B
GERMANY : DIN 6643
I.S.O. : ISO/DIS 15750 - 3
STANDARD PRACTICE :
Octagonal flange and round plug with c'apseal for leak prrof and temper proof fittings are as exhibited in Annexure 1 and 2.
Assembly and sketch of typical cross section is also enclosed in Annexure 3 and 4. In the conventional assembly to avoid the leakage there are three stages :
1. Gasket provided on flange seals leakage between flange and drum top.
2. Gasket provided on bung/ plug prevents leakage between flange.
3. Lining on capseal prevents leakage from leaky bung. Capseal also prevents tempering of drum to retain the quality of product inside the drum.
Conventionally drum tops are made from mild steel which are fitted with internally threaded flanges that are curled on the drum top with gasket in between to provide leak proof assembly.
If during the handling of filled drum there is impact then drum top and flange may separate easing off pressure and rubber gasket thus causing leakage.
Also duing reconditioning the drum is burnt to obtain clean surface inside. During the burning process the flange gasket gets burnt out and therefore sealing is lost.
The reconditioner has two options now one is to change drum top and other is to use a reconditioned bung but the second option prevents sealing of the drum.
The clinching prevents seperation of the top sheet from octagonal flat portion of flange, thereby pressure on flange gasket is not released, hence no leakage.
The principal object of the invention is to provide an octagonal clinched drum top to protect sealing of drum during impact and to allow reconditioner to maintain same drum head by use of recondition bung and octagonal capseal.
Still another object of the invention is to provide a octagonal clinched drum top which is pilferproof with a special octagonal cap seal.
Accordingly there is provided a octagonal clinched drum top (1) refer Fig. 3 comprising the drum top (1) which covers the flanges (2) the said flange (2) curled over the neck (3) of the drum top.
Flange has inner threading (5) and drum top extends below the flange at (6); the said drum top clinched (7) over the octagonal base of the flange there is provided a gasket (8) in between the flange and the drum top which is of any resilient material preferably rubber provided in a leakproof manner so that leaking is prevented from a sudden impact due to the dropping of the drum in any orientation.
The invention will now be described with reference to Fig. 1 to 6 in the accompanying drawings.
Fig.l is a plan and sectional view of the conventional drum top.
Fig.2 is a sectional view of a octagonal clinched drum top before drop testing and after drop testing.
Fig.3 is a plan and sectional of a octagonal clinched drum top.
Fig.4 is a plan and sectional view of octagonal clinched drum top, with recondition bung and octagonal topseal.
Fig.5 is a 50mm cap seal of clinching assembly.
Fig. 6 is 50mm flange clinching die assembly.
A comparision between octagonal clinched drum top and conventional drum top for drop test as under :-
After the insertion of the flange and assembling drum with drum shell the drum is tested for leakage test after filling the with specified amount of water and then drop it for specific height.
For particular orientation of the drum with respect to the closure opening conventional drum top separates from the flange thereby easing pressure on flange gasket and thereby causing a leak. A clinched drum top however prevents separation of drum top from the flange thereby not allowing leakage take place.
It is desired to patent special clinching process of fitting flange on drum top die (Fig.6) and special octagonal capseal to crimp on octagonal face shape of the drum top that goes over flange and tool for crimping this capseal (Fig.5) Fig. 3 shows drum head with clinched flange wherein by special die, drum top goes over and under the flange so that in case of impact it does not separate from flange and cause flange gasket to leak. When drums are to be reused they are burnt during reconditioning causing flange gasket to burn. Leakage can be stopped from bung opening as well as from the portion between drum head and flange by use of reconditioning bung. Recondition bung is given in Fig. 4 and drawing of the assembly is also shown in Fig. 4. However, in conventional system when recondition plug is used drum cannot be sealed with a conventional capseal. In the new system invented, the octagonal crimp shall allow a special octagonal capseal to be used over reconditioning plug so that sealing shall be made possible therefore drum reconditioner of actagonally clinched drum head need not take off drum head and fit in new head during reconditioning.
A octagonal clinched drum top alongwith its capseal will improve the reliability of the leakproofness of existing drum particularly in case of accident and will improve pilferproofness also. The present invention thus effectively can be used for preventing the leakage by separation of drum top from the flanges due to sudden impact. The use of recondition plugs alongwith special octagonal capseal is also a unique feature whereby the replacement of drum top is avoided at the time of reconditioning.
Therefore, the invention is cost effective, easy to manufacture above all retains the goodwill of the manufacturer.
This is an embodiment of the invention. Several modifications are possible may be considered within the ambit and spirit of this invention. Since many modifications, variations and changes in detail may be made to the above described embodiments, it is intended that all matters described in the foregoing description as described in the accompanying specification.

Claims

I CLAIM :-
1. A octagonal clinched drum top (1) comprising the drum top (1) which covers the flanges (2) the said flange (2) curled (4) over the neck (3) of the drum top which have inner threading (5) and extends below the drum top at right angle
(6); the said drum top clinched (7) over the octagonal base of the flange there is provided a gasket (8) in between the flange and the drum top which is of any resilient material preferably rubber provided in a leakproof manner so that leaking is prevented from a sudden impact due to the dropping of the drum in any orientation.
2. A octagonal clinched drum top as claimed in claim 1 wherein a sealing cap of a octagonal shape can be crimped over the flanges as well as the octagonal portion of the drum top which gives a permanent gripping thereby preventing pilferage.
3. A octagonal clinched drum top as claimed in claim 1 which is recondition and reused the reconditioned plug without replacing the whole drum top.
4. A octagonal clinched drum top as claimed in claim 1 wherein a special press tool is used with a improved die so as to give the clinched portion with respect to flange and the drum top to avoid leakage of the clinch due to any certain impact.
5. A octagonal clinched drum top as claimed in claim 1 wherein the resilient material may be of BUNA rubber, EPOM and alike material.
6. A octagonal clinched drum top as claimed in claim 1 and substantially herein described in Fig. 1 to 6 in the accompanying drawing. A octagonal clinched drum top as claimed in claim 1 wherein the reconditioning is carried out when the resilient material has been burnt down.
A octagonal clinched drum top as claimed in claim 1 wherein the reconditioned plug is provided with extended gasket as resilient material and clamping is done to avoid leakage.
PCT/IN2002/000031 2002-02-21 2002-02-25 A octagonal clinched drum top WO2003070586A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2002253502A AU2002253502A1 (en) 2002-02-21 2002-02-25 A octagonal clinched drum top

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IN169MU2002 2002-02-21
IN169/MUM/2002 2002-02-21

Publications (1)

Publication Number Publication Date
WO2003070586A1 true WO2003070586A1 (en) 2003-08-28

Family

ID=27742245

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IN2002/000031 WO2003070586A1 (en) 2002-02-21 2002-02-25 A octagonal clinched drum top

Country Status (2)

Country Link
AU (1) AU2002253502A1 (en)
WO (1) WO2003070586A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10301079B2 (en) * 2014-09-03 2019-05-28 Sudarshan Madoprasad Saraf Hybrid plug and method of sealing a drum

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB321472A (en) * 1928-08-15 1929-11-14 William Jessop Improvements in and relating to the manufacture of sheet metal articles and particularly metal drums and like containers
US2445802A (en) * 1945-01-08 1948-07-27 Robinson Joseph Container closure
US3946894A (en) * 1974-11-11 1976-03-30 American Flange & Manufacturing Co. Inc. Drum closure

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB321472A (en) * 1928-08-15 1929-11-14 William Jessop Improvements in and relating to the manufacture of sheet metal articles and particularly metal drums and like containers
US2445802A (en) * 1945-01-08 1948-07-27 Robinson Joseph Container closure
US3946894A (en) * 1974-11-11 1976-03-30 American Flange & Manufacturing Co. Inc. Drum closure

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10301079B2 (en) * 2014-09-03 2019-05-28 Sudarshan Madoprasad Saraf Hybrid plug and method of sealing a drum

Also Published As

Publication number Publication date
AU2002253502A1 (en) 2003-09-09

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