US20070102430A1

US20070102430A1 - Self closing bag hanger

Info

Publication number: US20070102430A1
Application number: US11/267,351
Authority: US
Inventors: Vito Licari
Original assignee: Individual
Current assignee: Individual
Priority date: 2005-11-04
Filing date: 2005-11-04
Publication date: 2007-05-10

Abstract

A trash liner frame comprises a pair of L-shaped panel members, each L-shaped panel member being positioned back-to-back and are hingedly connected with one another by hinges located near a lower end thereof, and thereby forming a hollow frustum. Each panel member includes bag liner retaining means at an upper end thereof and at least one of the L-shaped panel members has step pivot means for pivoting said upper ends outwardly from one another around the hinges.

Description

FIELD OF THE INVENTION

The present invention relates to frames for holding bags. More particularly, the present invention relates to a frame for hanging a bag, for example of the shopping variety, which is opened by applying foot pressure and is self-closing.

BACKGROUND OF THE INVENTION

There are many designs and constructions known for making foot-operated receptacles for receiving plastic bags for the purpose of receiving refuse. Of the ones which are designed to close automatically, most are of the simple, conventional type with a relatively flat lid on a rectangular bag holder, requiring complicated lever systems for opening and/or reclosing the lid once the refuse has been deposited into the bag suspended therein. In most cases, a front floor-level lever is attached to a lever which runs straight back and under the main receptacle, up the back inside or outside of the receptacle and hingedly contacts the lid which is also hingedly attached at a second location to the receptacle body at its back end. Depressing the foot lever, causes the back end of the lever to pivot upward, forcing the lid up and back, rotating on the back hinge. Often, such complex lever systems are difficult to render in a sturdy way when using thermoplastic molding for forming the receptacles. They can be fragile, breaking after relatively low numbers of uses, are expensive to ship, and may require some assembly, and often repeated re-assembly, by the end-user.
Moreover, in the plastic housewares industry, where a large percentage of such receptacles are marketed, profit margins are extremely low and such factors as having fewer pieces to mold, and finding configurations which reduce the shipping cost per item, can make the difference between a company thriving and going out of business. The receptacle described above is only nestable on another similar unit with some components being shipped in a disassembled state, to be assembled by the consumer. This increases the burden on the consumer and increases the chances that receptacles will wind up on store shelves without the corresponding number of lids unless more complicated, often more expensive packaging methods are employed.
An additional concern is that of plastic bag positioning and retention which is addressed in fairly cumbersome ways by designs such as those disclosed in U.S. Pat. Nos. 4,753,367 to Miller, et al., 4,620,683 to Claydon et al., 5,704,511 to Kellams, and many others.
Thus far, existing constructions for self-opening or self-closing trash receptacles designed to hold plastic bags have remained fairly uniform and have done little to address the concerns mentioned hereinabove. Moreover, very few indeed have addressed the aesthetic needs of today's designer kitchen.

SUMMARY OF THE INVENTION

The specification teaches exemplary embodiments of the inventive concept wherein a receptacle comprises a frame which can be easily opened without using one's hands, is formed from only two nearly symmetrical L-shaped halves, each having a somewhat U-shaped cross-section, and joined together by two opposing pivot hinges located at the edges of each half near the lower and wider end thereof. A step projects upward and outwards away from near the bottom of at least one of the faces of the halves. Each half is shaped with a cross-section progressively diminishing from bottom to top to permit nested stacking of one assembled receptacle atop another, for compact shipping.
Bag retaining tabs or clips, usually a pair for each half, are provided near the upper edge of each half. The bag retaining tabs or clips are positioned preferably above the pivot hinges so that the weight of the bags, suspended thereon and subsequently filled with refuse, is directed downward on the hinges. The shape of each half along a main floor contact surface is such that downward force exerted at the side hinge pushes the main floor contact surfaces flat onto the supporting and levers the upper ends of the receptacle together. Pressing down with one's foot on the outermost edge of the step causes a pivoting motion at the pivot point formed by the obtuse angle where the step meets the main contact floor surface, which pivot motion is transferred to the hinges and causes outward pivoting of the upper ends of the halves, causing them to move away from one another.
A plastic shopping bag suspended by its handle loops on the bag retaining tabs or clips is thus opened wide and refuse may be deposited. Releasing pressure on the foot step permits the weight of the portion of the halves above the pivot hinges to reexert its downwards pressure. The main floor contact surfaces regain full contact with the floor as the upper ends of the halves come back together. The receptacle is closed by the force of its own weight downward on the hinges.

BRIEF DESCRIPTION OF THE DRAWINGS

For a better understanding of the invention with regard to the embodiments thereof, reference is made to the accompanying drawings, which may be taken together with the Detailed Description which follows:
FIG. 1 shows an individual frame for holding bags, seen open in perspective view from above and the left side, in accordance with one exemplary embodiment of the invention;
FIG. 2 shows a pair of nested assembled frames for holding bags, in perspective view from above and the left side, in accordance with the exemplary embodiment of the invention shown in FIG. 1;
FIG. 3 shows a pair of nested assembled frames for holding bags, in perspective view from below and the left side, in accordance with a variant exemplary embodiment of the invention shown in FIGS. 1 and 2;
FIG. 4 shows a perspective view of an exemplary embodiment of a frame, in accordance with another exemplary embodiment of the invention;
FIG. 5 shows a side elevational view of the exemplary embodiment shown in FIG. 4;
FIG. 6 is a front elevational view of the exemplary embodiment shown in FIGS. 4 and 5;
FIG. 7 is a top plan view of the exemplary embodiment shown in FIGS. 4-6;
FIG. 8 is a detail perspective view of the exemplary embodiments shown in FIGS. 4-7 with bag retaining wing tabs in the open position;
FIG. 9 is a perspective view of another exemplary embodiment of the invention; and
FIG. 10 is a perspective view of the exemplary embodiment of the invention shown in FIG. 9 above shown in an open position.

DETAILED DESCRIPTION OF THE INVENTION

With reference to FIGS. 1 and 2, there is provided a two piece frame 2 comprising two opposing, substantially L-shaped U-panels 10, made from thermoplastic resin, positioned like back-to-back Ls, each having a longer vertical back portion 12 and having a substantially shorter and substantially horizontal floor contacting portion 14 extending outwardly from the lower end of each vertical portion 12. A sloped outer surface 17 is further provided opposite each vertical portion 12. The end of at least one of the horizontal portions having a step member 16 comprising lower surface 13 that extends upwardly at an angle of at least 5 degrees, and preferably at least 10 degrees, and even more preferably at least 15 degrees of horizontal, providing a depressible lever on the face of U-panel 10 that causes rotation around pivot point 19. At or near an upper end of each panel, for example on the inner opposing surfaces thereof, there may be provided one or more bag retention mechanisms such as tabs 18 from which a plastic bag, such as a grocery shopping bag, may be suspended between the inner surfaces of the upper ends of the two opposing panels. The opposing panels are joined together at their backs at axle points 20 on both back edges near their lower ends, at about the angles, by a flexing mechanism such as hinge 22.
In an exemplary embodiment, a cutout 24 is provided in one or both of the vertical portions. The purpose of the cutout is to allow the expansion of a bag suspended between the panels as it is filled with trash or any other contents. Instead of a cutout, other exemplary embodiments could incorporate a hinged flap, flexible mesh, accordion panel or the like, which would permit desired expansion as a suspended bag is filled. A second cutout 26 may be provided just below the top of each vertical portion to serve as a handle, although other forms of handles, such as protrusions, can be utilized. In use, the frame is placed upright on a surface, such as a floor, and the user applies downward pressure on the step lever 16. The downward torsional pressure causes the panels 10 to rock forward rotating around pivot point 19 (pivoting around the flexing mechanism 22) pushing upwards on hinges 22 and causing the opposing ends of horizontal floor portions 14 to swing together and the top ends 28 of the vertical portions 12 to swing away from each other to an opened position. The mouth of any bag suspended between bag retention mechanisms 18 is held open while an object is dropped into the bag. Releasing the downward pressure permits the top ends 28 of the vertical portions 12 to swing back together.
The L-shaped panels 10 may be substantially symmetrical, joined by a flexing mechanism. The flexing mechanism can be a two-part ball-and-socket type hinge, or it may be a “living” hinge, i.e. a thinned portion of flexible material, which is an integral part of one or both panels. These non-limiting examples of flexing mechanisms are just two among the several which may possibly be used to practice the invention will be described further hereinbelow.
In one exemplary embodiment, a pair of symmetrical panels are provided, joined at the elbows by separate joint members. For example each panel has a ball at axle point 20, over which a socket piece having receiving and retaining holes for each of the balls is rotatably fixed.
Although, the downward force exerted by the panels themselves and any contents placed within a suspended bag should be sufficient to cause the top ends 28 to swing back together, it may be desirable to provide means for attaching a spring or other elastic device (even a rubber band) between the vertical portions 12. The method and points of attachment for providing such a closing assist mechanism is well within the ken of one of ordinary skill in the art of plastic housewares design and will not be further elaborated upon here.
It is particularly advantageous for purposes of shipping the frames of the invention in quantity to construct a frame 2, having inner surfaces and outer surfaces which are complementary to permit the nesting of one frame 2 on top of another frame 2, as shown in FIGS. 2 and 3. For example providing the frames with a substantial slope on their outer aspect, a second frame placed above a first frame, can slide down over the first, and a third can similarly be slid down over the second, etc. This permits an economy in shipping which can be crucial to achieving profitability in the plastic housewares market to which this invention relates.
With reference to FIG. 3, it can be seen that rather than hooks 18, tab cutouts 118 are provided near top ends 28. A plastic liner bag is thus secured by pushing the upper edge of the plastic of the bag or liner down and over the tab cutouts 118. As the bag is filled, it is drawn down tighter onto the tab or tongue 120 portion of the tab cutout.
With reference to FIGS. 4-8, an exemplary embodiment having a more outwardly curved or convex shaped outer walls 30 is shown having only one perforation for a handle 26 near the top end 28. For a bag retaining mechanism, wing tabs 32 are hingedly attached. Each wing tab 32 displaceably covers prongs 34 formed in top end 28, upon which an upper edge of a plastic bag or liner can be draped when wing tab 32 is in an upper position, thereby uncovering or exposing prongs 34. Wing tabs 32 are then lowered to a lower covering position, providing some insurance that a plastic bag or liner placed therein is maintained in place until purposely removed by the end-user.
With reference to FIGS. 9 and 10, an exemplary embodiment having a narrower frontal aspect is shown. Additionally, the bag retaining mechanism comprises tab cutouts 218 and tongues 220 similar to that of the embodiment shown in FIG. 3. However, in the instant embodiment, the tab cutouts 218 and tab tongues 220, are located in the upper regions of the back edges 60 of the vertical portions 212 and directly above the hinges 222.

Claims

1. A trash liner frame comprising a pair of L-shaped panel members, each L-shaped panel member being positioned back-to-back and hingedly connected with one another near a lower end of, and thereby forming a hollow frustum, each panel member having bag liner retaining means at an upper end thereof and at least one of the L-shaped panel members having step pivot means for pivoting said upper ends outwardly from one another.