Receptacles – Freight containers – Including inner bag liner
Reexamination Certificate
2002-07-08
2003-12-16
Moy, Joseph M. (Department: 3727)
Receptacles
Freight containers
Including inner bag liner
C220S495010
Reexamination Certificate
active
06662962
ABSTRACT:
The present invention refers to a flexible liner for shipping bulk load inside shipping containers which is basically constituted of a flexible liner that is configured in the form of a sack or bag, and which is intended to be placed inside a plurality of means of transport for bulk load, such as towers, trucks, rail wagons or containers for load storage by air or sea, as well as a method for placing said flexible liner inside a space or container for bulk load storage.
As we know, presently, the transport of bulk load, whose materials may include substances in the form of powders, balls, flakes or granules, also including grains, liquids and others, is usually made in containers, whose dimensions meet the international specifications, and which may be transported fitted on land based vehicles, and these said containers will further be able to, for economic reasons, be stacked, one on another, to allow its transport on board of ship or aircraft.
Many types of flexible liners already known from the state of the art are placed inside containers, which usually present a rectangular configuration, and kept suspended inside the container through means of support that are attached into eyelets disposed in the superior part of the internal side walls of the container; however, it was found that most of these flexible liners presents the inconvenience of having their fastenings loosened from the eyelet, and even their tearing, in function of the conditions they are submitted during transport of the container, due to the movement of the load inside the flexible liner, it may allow the bulk load to spill from the liner into the container, causing therefore its loss and/or contamination of whole load, and, consequently, contaminating the container itself, and, in more extreme cases, besides it may cause serious accidents involving the personnel responsible for the discharge of the load; however, the most serious inconvenience observed on the usage of flexible liners known from the state of the art is the fact that, when the load is fed into the flexible liner for its shipment, or when the door of the container is opened for inspection of the load already loaded inside the flexible liner, part of the back wall of the flexible liner which becomes exposed suffers an arching outward, in function of the internal pressure that it is submitted by the load against the internal surface of said part of the back wall of the flexible liner, this fact may cause a great difficulty, or even disable to close the door of the container again.
Aiming to overcome the inconveniences previously mentioned, several types of flexible liners were developed to be used inside containers, which reflect the current state of the art, and that will be commented below.
The patent document BR 9.202.694, published in Mar. 23, 1993, by Carlos J. D. Matias, illustrates a flexible liner, that is placed inside a container, being that in part of the back wall of the flexible liner are disposed horizontal and vertical bars, and in the intercessions of which will be fixed oblique strips, whose inferior frontal ends will be fixed on the base of the container, and, when loading the flexible liner, these said oblique strips will be pressured, in order to retain said part of the back wall of the flexible liner, objecting to try to prevent said part of back wall from arching, that tends to occur in function of the pressure that it is submitted by the load against the internal surface of said part of the back wall of the flexible liner.
The patent documents U.S. Pat. No. 3,696,952, published in Oct. 10, 1972, and U.S. Pat. No. 3,868,042, published in Feb. 25, 1975, both in name of Sea-Land Service, Inc., illustrate a flexible sack or bag, that is fastened on the internal walls of the container, being that part of back wall of the flexible liner is reinforced along the loading process, through a plate, in order to avoid it from arching outward, and said part of back wall of the liner is further provided with openings, which are conveniently disposed, such as to allow the loading and the discharge of said flexible liner; said openings will be properly sealed during transport of the container.
The patent document U.S. Pat. No. 3,951,284, published in Apr. 20, 1976, by Du Pont Canada, Ltd., illustrates a flexible liner which employs bars disposed on the inferior part of the back wall of the flexible liner, in order to avoid it from arching outward along its loading, and said part of back wall of the flexible liner is also provided with openings, which are conveniently disposed, to allow the loading and discharge of the flexible liner, and these openings will also be properly sealed during transport of the container.
The patent documents U.S. Pat. No. 3,980,196, published in Sep. 14, 1976, and U.S. Pat. No. 4,054,226, published in Oct. 18, 1977, both in name of United States Lines, Inc., illustrate a back frame, which configures a back plate, that will retain the flexible liner inside the container, in order to avoid part of back wall of the flexible liner from arching outward, and prevent the flexible liner from tear.
The patent document U.S. Pat. No. 4,232,803, published in Nov. 11, 1980, by A.I.R. Foundation, illustrates a pair of retainer elements disposed in angle, to support part of back wall of the flexible liner inside the container, and its construction demands a container comprising a double door obligatorily.
The patent document U.S. Pat. No. 4,601,405, published in Jul. 22, 1986, by The Boeing Company, illustrates a device for closing the part of back wall of the flexible liner, provided that said wall part is formed by three triangular plates, whose free vertices are joined by means of strips that will be attached by means of said closing device.
The patent documents EP 280.493 and EP 280.495, both published in Aug. 31, 1988, U.S. Pat. No. 4,792,239, published in Dec. 20, 1988, U.S. Pat. No. 4,801,042, published in Jan. 31, 1898, all in name of Kawasaki Kisen Kaisha, illustrate adjustable strips, which are employed to retain the flexible liner from the internal walls of the container.
The patent document U.S. Pat. No. 4,875,596, published in Oct. 24, 1989, by Jürgen Lohse, illustrates a tubular flexible flask that is supported inside a container, disposed separated from the walls of said container, being that the ends of said tubular flexible flask are joined by means of staple connections.
The patent document U.S. Pat. No. 5,040,693, published in Aug. 20, 1991, by Victor T. Podd and others, illustrates a flexible liner whose back wall is provided with a plurality of horizontal and vertical bars responsible for retaining said part of back wall, in order to avoid it from arching.
The patent document GB 2.226.300, published in Jun. 27, 1990, by Nipon Yusen Kaisha, illustrates a flexible liner that is placed inside a container, and rigid elements are disposed in part of back wall of said flexible liner, in order to avoid said part of the back wall of the flexible liner from arching.
The patent document GB 2.228.468, published in Aug. 29, 1990, by A.P.S. Co. Ltd., illustrates a flexible liner that is placed inside a container, and horizontal bars are disposed in part of back wall of the flexible liner, in order to avoid said part of back wall of the flexible liner from arching.
The patent document FR 2.461.661, published in Feb. 6, 1981, by Pneumatiques, Caoutchouc Manufacture et Plastiques Kleber-Colombes, illustrates a flexible liner, where part of back wall is retained by means of the employment of strips, disposed forming an “X”, which are fastened on the side walls of the container.
The patent document EP 21.814, published in Jan. 7, 1981, in name of In Bord Bainne Co-Operative Limited, illustrates a flexible liner that is placed inside a container, and where part of back wall is retained by means of the employment of rigid panels.
The patent document EP 260.652, published in Mar. 23, 1988, by Kawasaki Kisen Kaisha, Ltd., illustrates a flexible liner that is placed inside a container, and horizontal bars are disposed on part
Dennison, Schultz & Dougherty
Keyworld de Embalagens Ltda.
Moy Joseph M.
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