Liquid transport drum with removable liner

• US 5,217,138 A
• Filed: 05/07/1992
• Issued: 06/08/1993
• Est. Priority Date: 02/25/1991
• Status: Expired due to Fees

• Current Assignee: Hoover Materials Handling Group Incorporated (Hoover Ferguson Group, Inc.), Hoover Group Incorporated
• Original Assignee: Hoover Group Incorporated
• Inventors: Nichols, Dwight E.
• Primary Examiner(s): Shoap, Allan N.
• Assistant Examiner(s): CASTELLANO, STEPHEN J
• Application Number:
  US07/881,328
• Time in Patent Office: 397 Days
• Field of Search: 220/403, 220/404, 220/465, 220/723, 220/254, 220/367, 220/466, 220/DIG. 19, 220/DIG. 29, 220/DIG. 27
• US Class Current: 220/495.06
• CPC Class Codes: B65D 25/16 Loose, or loosely-attached, linings
• CPC Class Codes: B65D 77/06 Liquids or semi-liquids or other materials or articles enclosed in flexible containers disposed within rigid containers

Abstract

A container for retaining bulk liquid materials is provided having an outer drum forming an enclosed cavity bounded by a base portion, upright walls and a top wall including at least one port. A liner is disposed within the cavity of the outer drum and is fixably secured to a first bung removably engaged with the port. The first bung has a central opening enabling access to the interior of the liner for filling and discharge purposes. When filled with a bulk liquid material, the liner conforms in shape to the shape of the enclosed cavity of the drum. The first bung opening is sealed by a second bung member in engagement with the first bung member. Upon the emptying of the bulk materials from the drum, the liner, being thin walled, substantially fully collapses. The first bung member may then be disengaged from the port and the liner, in its collapsed state, removed through the port in the top wall of the drum. Thus, an easily removable liner is provided which eliminates the necessity of cleaning the drum prior to subsequent use.

Claims

1. A container for transporting and storing bulk liquid materials of the type including a rigid outer drum having a bottom wall, upright cylindrical side walls, and a top wall defining an enclosed central cavity of predetermined shape, said top wall further including a portion defining at least one port, said container comprising:

a thin walled removable liner positioned in said cavity and being of a shape substantially conforming to said predetermined shape, said liner including a cylindrical sleeve having portions defining at least one aperture in substantial alignment with said port;

a first bung including a body mounted to said top wall and including a cylindrical sleeve extending through said port, said sleeve having an exterior surface being fixedly bonded to an interior surface of said sleeve of said liner at said aperture so that said liner is permanently attached to said body and non-removable therefrom, said body being removably engaged with said top wall at said port and also having a threaded portion defining a first bung opening extending therethrough, said liner being substantially fully collapsible enabling removal through said port upon disengagement of said first bung from said top wall; and

a second bung removably engaging said threaded portion defining said first bung opening.

2. A container for transporting and storing bulk liquid materials of the type including a rigid outer drum having a bottom wall, upright cylindrical side walls, and a top wall defining an enclosed central cavity of predetermined shape, said top wall further including a portion defining at least one port, said container comprising:

a thin walled removable liner positioned in said cavity and being of a shape substantially conforming to said predetermined shape, said liner including a cylindrical sleeve having portions defining at least one aperture insubstantial alignment with said port;

a first bung including a body mounted to said top wall and including a cylindrical sleeve extending through said port, said sleeve having an exterior surface being fixedly secured by heat sealing to an interior surface of said sleeve of said liner at said aperture so that said liner is permanently attached to said body and non-removable therefrom, said body being removably engaged with said top wall at said port and also having a threaded portion defining a first bung opening extending therethrough, said liner being substantially fully collapsible enabling removal through said port upon disengagement of said first bung from said top wall; and

a second bung removably engaging said threaded portion defining said first bung opening.