Typical food trays are made from a single piece of cardboard that is folded Food trays are utilized to package food items. For example, a fast-food restaurant may package a hamburger in a food tray. A caterer catering to an office may place a sandwich, a bag of chips, and a cookie in a food tray.
Typical food trays are made from a single piece of cardboard that is folded into a configuration that provides a container with a lid. The container is sized to protect the food item during handling. The lid typically includes locking tabs that engage complementary locking tabs on the container when the lid is closed.
One problem with food trays is that they can tend to get soggy due to the humidity and heat produced by the food item. Another problem is that the lid may have a tendency to move into the closed position after being opened due to the elastic nature of the cardboard.
A food tray includes a front wall with a distal end and a proximal end, and a rear wall with a distal end and a proximal end. A first sidewall extends between the distal end of the front wall and the distal end of the rear wall, and a second sidewall extends between the proximal end of the front wall and the proximal end of the rear wall. The front wall, rear wall, first sidewall, and second sidewall define an opening through which an item is placed in the food tray. The first and second sidewalls each define a slot and an extension extending above the slot. A lid member extends from a top edge of the front wall and defines a pair of tabs that engage the slots defined by the first and second sidewalls when the lid is folded over the opening. The top edge of the front wall is configured to cause the lid member to open when the first and second sidewall extensions are pulled apart.
Other systems, methods, features and advantages of the invention will be, or will become, apparent to one with skill in the art upon examination of the following figures and detailed description. It is intended that all such additional systems, methods, features and advantages be included within this description, be within the scope of the invention, and be protected by the following claims.
The exemplary embodiments below describe a food tray for storing and/or serving a food item. The food tray includes a first lid member and second lid member that are attached to a front wall and rear wall, respectively. The edges between the respective lid members and walls are bowed so that tension is produced in the front wall and rear wall when the respective lid members are placed in a closed configuration. The lid members are held in place by a group of tabs that engage a pair of slots in first and second side walls of the food tray. The slots and tabs cooperate to prevent the lid members from opening under the tension. When the first and second sidewalls are spread apart, the tabs are released from the slots, and tension in the front and rear walls causes the lid members to automatically open.
A bottom surface 605 (
In some implementations, the first sidewall 105, second sidewall 110, front wall 115, and rear wall 120 are tapered to enable stacking of the food tray 100. For example, the angle between each respective wall and a line that is normal to the bottom surface 605 of the food tray may be greater than 0°.
In yet other implementations, the front wall 115 and/or the rear wall 120 define openings 115d and 120d that enable venting the food tray. The openings 115d and 120d may be defined by way of perforated edges that enable a user to push out or otherwise remove a portion of the front wall 115 and/or the rear wall 120 to reveal the openings 115d and 120d.
The first lid member 125 extends from the top edge of the front wall 115, and the second lid member 130 extends from the top edge of the rear wall 120, as shown in
As shown in
As illustrated by
Bowing of the front wall 115 and the rear wall 120 provides an elastic force that causes the first and second lid members 125 and 130 to open on their own when the extensions 105b and 110b on the first and second side walls 105 and 110 are pulled apart to release the tabs 720 on the first and the second lid members 125 and 130. Stated differently, when the first and second lid members 125 and 130 are in an open position, the first and second lid members 125 and 130 lie in the same plane as the front wall and rear wall 115 and 120, respectively. In this configuration, the front wall 115 and the rear wall 120 may be generally planar and not bowed. When the first and second lid members 125 and 130 are moved into the closed configuration, tension is produced in the front wall 115 and the rear wall 120 by way of the bowing that occurs in the front wall 115 and the rear wall 120 resulting from the arc shape crease 705a and 705j (
As illustrated in
In one embodiment, the food tray is configured by cutting the sheet along a group of cut lines 710a-d to separate a group of tabs 715a-d. Next, the sheet 700 is folded along the group of creases 705a-j to configure the food tray. The configuration is maintained by attaching the group of tabs 715a-d to the first sidewall and second sidewall. The tabs 715a-d may be attached to the first sidewall and second sidewall via glue strips 720a-d disposed on the first and second sidewalls, or in a different matter.
The food tray 800 includes a group of gussets 805 on respective corners of the food tray 800. In
In
The food tray 900 includes a group of gussets 905 on respective corners of the food tray 900. In
Each gusset 905 includes a lock tab 910 positioned on a tip of the gusset 905. The lock tab 910 is configured to enter through an aperture defined by a complementary lock tab 910 that extends in a substantially perpendicular direction away from an outside surface of a sidewall 105 and 110 of the food tray 900.
In
In operation, the second folding portion 920b is folded towards the center of the food tray 900 along a shared edge 925 with the respective sidewall 105 and 110. Next, the first folding portion 920a is folded about a shared edge 926 with the second folding portion 920b, so that the lock tabs 915 extend over the first sidewall 105 and the second sidewall 110, respectively to engage the lock tabs 910 of the respective gussets 905. The first folding portion 920a and the second folding portion 290b form a shelf that extends toward the center of the food tray 900. The shelf provides support for the first lid member 125 and the second lid member 130 when the respective lids 125 and 130 are folded to close the food tray 900.
The first lid member 1005 and the second lid member 1010 are configured to be folded to cover a food item placed within the food tray 1000. The first lid member 1005 of the food tray 1000 defines a pair of lock tabs 1020 configured to engage a complementary pair of lock tabs 1015 defined by the flaps 1025 extending from the first sidewall 105 and the second sidewall 110, respectively. The lock tabs 1020 defined by the first lid member 1005 and the lock tabs 1015 defined by the flaps 1025 cooperate to lock the respective lid member 1005 and 1010 in a closed position.
As shown in
In operation, in the assembled configuration, the flaps 1025 are folded towards the center of the food tray 1000 along a shared edge 1030 with the respective sidewalls 105 and 110. In this configuration, the flaps 1025 form a shelf that extends toward the center of the food tray 1000. The shelf provides support for the first lid member 1005 and the second lid member 1010 when the respective lid members 1005 and 1010 are folded to close the food tray 1000.
The first lid member 1005 and the second lid member 1105 are configured to be folded to cover a food item placed within the food tray 1100. The first lid member 1005 of the food tray 1000 defines a pair of lock tabs 1020 configured to pass through a respective pair of openings 1110 (
In operation, in the assembled configuration, the flaps 1025 are folded towards the center of the food tray 1000 along a shared edge 1030 with the respective sidewall 105 and 110. Next the second lid member 1105 is folded about a shared edge with the front wall 115. In this configuration, the lock tabs 1015 on the flaps 1025 are positioned below the openings 1110. Next, the first lid member 1005 is folded over the second lid member 1105. The lock tabs 1020 defined by the first lid member 1005 are then inserted through the openings 1110 defined by the second lid member 1105 so as to engage the lock tabs 1015 defined by the flaps 1025. In this configuration, the flaps 1025, first lid member 1005 and second lid member 1105 cooperate to provide a top surface capable of supporting additional food trays 1100. For example, the second lid member 1105 is substantially prevented from being pushed into the cavity of the food tray because the respective locking tabs 1015 and 1020 engage one another by passing through the openings 1110. This, in turn enables the food tray 1100 to support the weight of additional food trays with food items stored therein as is the case when food trays are stacked.
The first lid member 1205 and the second lid member 1210 are configured to be folded to cover a food item placed within the food tray 1200. Referring to
The first sidewall 1202 and the second sidewall 1204 each define an extension section 1224 that defines a slot 1225. A flap 1215 extends from a top edge of the each of the respective sidewalls 1202 and 1204 and is configured to be folded about the top edge.
The extension section 1224 is sized to pass through the slots 1230 and 1220 defined by the first lid member 1205 and the second lid member 1220 when the food tray 1200 is in an assembled configuration, and the respective lid members 1205 and 1210 are folded over one another. The slot 1225 defined by the extension section 1224 is sized to receive the tabs 1235 of the slots 1230 defined by the first lid member 1205, such that when the first lid member 1205 and the second lid member 1210 are folded and the extension section 1224 passes through the respective slots 1230 and 1220 on the respective lid members 1205 and 1210, the tab 1235 extends through the slot 1225 defined by the extension section 1202. In other words, the tab 1235 engages the slot 1225 defined by the extension section 1224 to secure the respective lid members 1205 and 1210 in a closed configuration. Moreover, because the extension section 1224 passes through the slots 1230 and 1220 of both lid members 1205 and 1210, both lid members 1205 and 1210 are prevented from being pushed in when in a closed configuration. This, in turn enables the food tray 1200 to support the weight of additional food trays with food items stored therein as is the case when food trays are stacked.
While various embodiments of the invention have been described, it will be apparent to those of ordinary skill in the art that many more embodiments and implementations are possible that are within the scope of the invention. For example, referring to
The slots 1305a and 1305b may have a triangular shape or a different shape that facilities locking of the lid members 125 and 130. The slots 1305a and 1305b may be positioned along the edge of the respective lid members 125 and 130. The slots 1305a and 1305b may be provided on any of the food tray embodiments described above.
In some implementations, the first sidewall 105, second sidewall 110, front wall 115, and rear wall 120 may be tapered as described above to enable stacking of the food tray 1400. Other features described with respect to the embodiments described above may be provided.
The first lid member 125 extends from the top edge of the front wall 115, and the second lid member 130 extends from the top edge of the rear wall 120. The first lid member 125 and second lid member 130 each include a horizontal portion 1407a and 1407b and a flap portion 1405a and 1405b. Each flap portion 1405a and 1405b includes first and second tabs 1410a and 1410b. The first sidewall 105 and second sidewall 110 include an extension member 1415a and 1415b that define and opening configured to respectively engage the first and second tabs 1410a and 1410b to lock first lid member 125 and second lid member 130 in a closed configuration. In the closed configuration, the horizontal portions 1407a and 1407b are configured to substantially close the top of the food tray 1400. Surfaces of the flap portions 1405a and 1405b are held in contact with one another via the elastic force described above that occurs as a result of the bowing of the front wall 115 and the rear wall 120 to thereby form a vertical rib that extends perpendicular to top of the food tray 1400. The elastic force helps to maintain the surfaces of the flaps 1405a and 1405b against one another to thereby improve sealing of the food tray 1400.
As illustrated in
Many other modifications may be provided to one or more of the food tray embodiments described above. For example, gusseted sides may or may not be provided. When provided, the gussets may be configured to be positioned inside the food tray or outside the food tray. The respective sheets from which the respective food trays are formed may be made from paperboard or microfluted paperboard coated with a water and/or grease barrier coating or lamination, or an uncoated paperboard or microfluted paperboard. Other modifications may be made without departing from the scope of the claims.
This application claims priority to U.S. Provisional Application No. 61/356,847, filed Jun. 21, 2010, the contents of which are hereby incorporated by references.
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Entry |
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Photo of food box believed to have been taken prior to Jun. 21, 2010. |
Examination Report issued in related Canadian Application No. 2,780,514 dated May 28, 2015 (3 pages). |
Number | Date | Country | |
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20110308991 A1 | Dec 2011 | US |
Number | Date | Country | |
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61356847 | Jun 2010 | US |