AU2005246982B2

AU2005246982B2 - Drum with lid

Info

Publication number: AU2005246982B2
Application number: AU2005246982A
Authority: AU
Inventors: Udo Schutz
Original assignee: Schuetz GmbH and Co KGaA
Current assignee: Schuetz GmbH and Co KGaA
Priority date: 2004-12-22
Filing date: 2005-12-21
Publication date: 2008-10-09
Anticipated expiration: 2025-12-21
Also published as: CN1792734A; ATE430702T1; CN100590034C; DE502005007234D1; BRPI0505589A; RU2005140140A; MY143432A; DK1674404T3; EP1674404A1; AR055548A1; EP1674404B1; ZA200509781B; ES2323133T3; US20060138140A1; JP4299830B2; RU2327618C2; MXPA05014134A; PL1674404T3; AU2005246982A1; JP2006193218A

Description

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AUSTRALIA

Patents Act COMPLETE SPECIFICATION

(ORIGINAL)

Class Int. Class Application Number: Lodged: Complete Specification Lodged: Accepted: Published: Priority Related Art: Name of Applicant: Schutz GmbH Co. KGaA Actual Inventor(s): Udo Schutz Address for Service and Correspondence: PHILLIPS ORMONDE FITZPATRICK Patent and Trade Mark Attorneys 367 Collins Street Melourne 300 AUSTRALIA Invention Title: DRUM WITH LID Our Ref 759543 POF Code: 20412/455950 The following statement is a full description of this invention, including the best method of performing it known to applicant(s): -1- 6006q 2 0 Drum with lid

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The invention concerns drums with lids made from plastic material with a clamping ring made from metal to secure the lid of the drum on the upper edge of the drum, whereby the clamping ring with the U-shaped cross-section engages in the locked state with its upper flank from above the edge of the lid and with its lower flank engages from below an annular contact surface of a border on the oo casing of the drum, said contact surface extending vertically or inclined relative to N the longitudinal axis of the drum below the upper edge of the drum and S 10 representing the upper limit of a bend in the upper section of the casing of the Sdrum, and whereby the edge of the lid, formed by an internal edge, an extemrnal Sedge and a connecting ring has a U-shaped cross-section open downward with a sealing bed to place or foam-in a lid seal, that in the closed position of the lid of the drum is pressed against the upper edge of the lid by the clamping force of the clamping ring.

In the case of drums with lids of this type, see for example CA 2199799, the sealing effect of the lid of the drum is achieved by an axial pretensioning of the lid seal provided on the upper edge of the drum, whereby the axial pretensioning is produced by the closing of the clamping ring over these two inclined flanks sliding over the edge of the lid and the border of the drum. On drums with lids, approved for the storage and transporting of dangerous liquids, certain requirements are placed with regard to the safety of their storage and transport, that are tested by the prescribed approval checks, subjecting the drums with lids to, inter alia, lateral fall on the casing, a diagonal fall on the edge of the lid, a static internal pressure test and a stacking load.

The discussion of documents, acts, materials, devices, articles and the like is included in this specification solely for the purpose of providing a context for the present invention. It is not suggested or represented that any or all of these matters formed part of the prior art base or were common general knowledge in the field relevant to the present invention as it existed before the priority date of each claim of this application.

00 Throughout the description and claims of this specification, the word "comprise" Sand variations of the word, such as "comprising" and "comprises", is not intended Nto exclude other additives, components, integers or steps.

According to the present invention there is provided a drum with lid made from 0plastic material with a clamping ring made from metal to secure the lid of the drum on the upper edge of the drum, whereby the clamping ring with the U- OO shaped cross-section engages in the locked state with its upper flank from above N the edge of the lid and with its lower flank engages from below an annular contact S 10 surface of a border on the drum casing, said contact surface extending vertically Sor inclined relative to the longitudinal axis of the drum below the upper edge of Sthe drum and representing the upper limit of a bend in the upper section of the drum casing, and whereby the edge of the lid, formed by an intemrnal edge, an external edge and a connecting ring has a U-shaped cross-section open downward with a sealing bed to place or foam-in a lid seal, that in the closed position of the lid of the drum is pressed against the upper edge of the lid by the clamping force of the clamping ring, and further including an annular bead formed on the connecting flank of the upper and lower flanks of the clamping ring, said annular bead facing radially inward and when the clamping ring is closed for the purpose of securing the lid on the upper edge of the drum it engages with a meshing groove formed in the external edge of the lid or engages a bottom holding ring formed on the external edge of the edge of the lid.

The drum with lid from plastic material with a clamping ring from metal to secure the lid of the drum on the upper edge of the drum distinguishes itself from other known drums with lids by an increased strength in case of a fall as well as by a clamping ring with reduced material thickness, resulting in a reduction of the weight of the clamping ring and a reduced manufacturing cost of the clamping ring due to material saving.

Two embodiments of the drum with lid according to the invention are explained in the following based on the figures of the drawing, illustrating the following: Fig.1 a side view of the drum with lid, and the 00 O Figs.2 and 3 enlarged, cut-out illustrations of the top region of the drum with lid Swith two different embodiments of the clamping ring closure of the 01) lid of the drum.

SThe drum 1 with lid, made from plastic material, comprises according to Fig.1 a drum casing 2, a bottom 3, a drum lid 4 as well as a clamping ring 5 made from 00oo metal to secure the lid 4 on the upper edge 6 of the drum.

CC

c 10 In the case of both drum constructions, illustrated in Figs.2 and 3, the clamping 0 ring 5, having a U-shaped cross-section, engages from above with its upper flank S7 the edge 8 of the lid and with its lower flak 9 engages from below an annular contact surface 11 of a border 12 on the drum casing 2, said annular contact surface extending inclined relative to the longitudinal axis 10-10 of the drum and being situated below the upper edge 6 of the drum and representing the upper limit of a bend 13 in the upper section of the drum casing 2. The edge 8 of the lid, formed by an internal edge 14, an external edge 15 and a connecting ring 16, has a U-shaped cross-section open downward with a sealing bed 17 to place or foamin a lid seal 18, that in the closed position of the lid 4 is pressed against the upper edge 6 of the drum by the clamping force of the clamping ring In the case of the first embodiment of a clamping ring closure of the lid 4 of the drum, illustrated in Fig.2, an annular bead 20 is formed on the connecting flank 19 of the upper and lower flanks 7, 9 of the clamping ring 5, said annular bead facing radially inward and when the clamping ring 5 is closed it engages a meshing groove 21 formed in the external edge 15 of the lid 4 for the purpose of securing the lid on the upper edge 6 of the drum.

If the drum 1 with lid falls from a height on the edge 8 of the lid, the clamping ring 5 is crushed and the annular bead 20 of the clamping ring is pressed into the meshing groove 21 in the external edge 15 of the edge 8 of the lid. The lid 4 of the drum is thus better secured in this manner on the edge 6 of the drum and consequently the drum's resistance to fall is increased, while the thickness of the material of the clamping ring can be reduced.

00 i The second embodiment of a clamping ring closure of the lid 4 of the drum Saccording to Fig.3 is characterised in that when the clamping ring 5 is closed the annular bead 20 provided on it for the securing of the lid 4 on the upper edge 6 of the drum engages a bottom holding ring 22 formed on the external edge 15 of the 0 lid.

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Claims

1. A drum with lid made from plastic material with a clamping ring made from 0 metal to secure the lid of the drum on the upper edge of the drum, whereby the clamping ring with the U-shaped cross-section engages in the locked state with 00 its upper flank from above the edge of the lid and with its lower flank engages O from below an annular contact surface of a border on the drum casing, said c 10 contact surface extending vertically or inclined relative to the longitudinal axis Sof the drum below the upper edge of the drum and representing the upper limit Sof a bend in the upper section of the drum casing, and whereby the edge of the lid, formed by an internal edge, an external edge and a connecting ring has a U-shaped cross-section open downward with a sealing bed to place or foam-in a lid seal, that in the closed position of the lid of the drum is pressed against the upper edge of the lid by the clamping force of the clamping ring, and further including an annular bead formed on the connecting flank of the upper and lower flanks of the clamping ring, said annular bead facing radially inward and when the clamping ring is closed for the purpose of securing the lid on the upper edge of the drum it engages with a meshing groove formed in the external edge of the lid or engages a bottom holding ring formed on the extemrnal edge of the edge of the lid.

2. A drum substantially as hereinbefore described with reference to the accompanying drawings.