Collapsible pan

A collapsible pan includes a base portion, a plurality of side portions, and a flexible connector for connecting each of the side portions to the base portion along edges thereof. Each of the plurality of side portions is configured to be pivotable relative to the base portion, thereby permitting adjustment between a use configuration, whereby each of the plurality of side portions is arranged generally upright relative to the base portion, and a collapsed configuration, whereby each of the plurality of side portions is arranged to lay generally flat relative to the base portion.

COPYRIGHT STATEMENT

BACKGROUND OF THE INVENTION

The present invention generally relates to baking devices and, more particularly to an improved baking pan that is configured to be collapsible.

Baking pans and related baking accessories come in a wide variety of shapes and sizes. In many cases, baking pans are sized to accommodate the specific food item to be prepared. Bread loaf pans typically have higher side walls with a small base to accommodate for the rising process during baking Casserole and cake pans are often longer and wider at the base with shorter side walls to accommodate a larger quantity of the desired food item to be prepared therein. Baking sheets typically have a wide, flat base portion in order to provide an optimal baking surface. As many individuals are likely to possess a combination of differently sized pans for use in connection with various food items, pan storage can become an issue. Differently sized pans typically do not stack well with one another and, thus, often occupy significant shelf space. Accordingly, a need exists for collapsible baking pans having varying shapes and sizes that can be stored and maintained easily within a relatively small space.

In addition to the foregoing, a need exists for a collapsible pan that can be assembled for use and disassembled for storage with relative ease. Moreover, a need exists for a collapsible pan that is sturdy and durable when assembled in a use configuration. Still further, a need exists for a collapsible pan that can provide effective uniform heat distribution throughout the pan surface for even baking These, and other needs, are addressed by one or more aspects of the present invention.

SUMMARY OF THE INVENTION

The present invention includes many aspects and features. Moreover, while many aspects and features relate to, and are described in, the context of collapsible pans and related assemblies, the present invention is not limited to use only in collapsible pans, as will become apparent from the following summaries and detailed descriptions of aspects, features, and one or more embodiments of the present invention.

Broadly defined, the present invention according to one aspect includes a collapsible pan having a base portion and a plurality of side portions interconnected with the base portion at edges thereof. The side portions are configured to be pivotable relative to the base portion so as to permit adjustment of the collapsible pan between a use configuration, whereby the side portions are arranged generally upright relative to the base portion to define a partial enclosure having a baking surface and a heat distribution surface, and a collapsed configuration, whereby the side portions are arranged to lay generally flat relative to the base portion.

In features of this aspect, the baking surface may include silicone; the heat distribution surface may be a metal surface; the metal surface may include aluminum; each of the baking surface and the heat distribution surface may be a plastic surface; the plastic surfaces may each include a synthetic polymer; and the synthetic polymer may be nylon 6,6.

In other features of this aspect, the collapsible pan may further comprise a plurality of tabs at opposite ends of the side portions for attaching adjacent side portions together; the side portions may be releasably attached together so as to permit quick release of the tabs, thereby freeing the side portions for pivotable adjustment; and the heat distribution surface may be absent along the edges of the base portion where the side portions interconnect therewith.

Broadly defined, the present invention according to another aspect includes a collapsible pan adjustable between a use configuration and a collapsed configuration.

Broadly defined, the present invention according to still another aspect includes a baking kit having a carrier having an interior shelf and a baking pan adjustable between a use configuration and a collapsed configuration. The baking pan is adapted for storage within the carrier when in the collapsed configuration.

Broadly defined, the present invention according to still another aspect includes a carrier adapted for storing a plurality of collapsible pans. The carrier includes an enclosure, a plurality of interior shelves, and a cover adaptable for use as a baking sheet.

Broadly defined, the present invention according to still another aspect includes a collapsible pan substantially as shown and described.

Broadly defined, the present invention according to still another aspect includes a carrier substantially as shown and described.

Broadly defined, the present invention according to still another aspect includes a collapsible muffin pan substantially as shown and described.

Broadly defined, the present invention according to still another aspect includes a collapsible pan that includes a base plate, a plurality of side plates, and a flexible web to interconnect the base plate with the respective side plates at edges thereof. The flexible web facilitates pivotable movement of the side plates relative to the base plate, thereby permitting adjustment of the collapsible pan between a use configuration, whereby the side plates are arranged generally upright relative to the base plate to define a partial enclosure, and a collapsed configuration, whereby the side plates are arranged to lay generally flat relative to the base plate.

In features of this aspect, the web may include a silicone-based polymer; the web may include silicone; the plates may include a metal material; the metal material may be aluminum; the collapsible pan may further include a plurality of tabs at ends of the side plates for attaching adjacent side plates together; the side plates may be releasably attached together so as to permit quick release of the tabs, thereby freeing the side portions for pivotable adjustment; the web may be co-molded with the base plate and the side plates; and the web may be overmolded with respect to the base plate and the side plates.

Broadly defined, the present invention according to still another aspect includes a method of manufacturing a collapsible pan that includes the steps of providing a base plate and one or more side plates and injection molding a web composed of a polymer relative to the one or more plates to interconnect the base plate with the one or more side plates at an edge thereof.

In features of this aspect, the method may further include the step of insert molding the base plate and the one or more side plates; the step of injection molding a web may include overmolding the web relative to the base plate and one or more side plates; and the step of injection molding a web may include co-molding the web with the base plate and one or more side plates.

Broadly defined, the present invention according to still another aspect includes a method of manufacturing a collapsible pan substantially as shown and described.

Broadly defined, the present invention according to still another aspect includes a collapsible pan that includes a base portion, a plurality of side portions, and a flexible connector for connecting each of the side portions to the base portion along edges thereof. Each of the plurality of side portions is configured to be pivotable relative to the base portion, thereby permitting adjustment between a use configuration, whereby each of the plurality of side portions is arranged generally upright relative to the base portion, and a collapsed configuration, whereby each of the plurality of side portions is arranged to lay generally flat relative to the base portion.

In features of this aspect, the flexible connector may be comprised of a synthetic polymer; the synthetic polymer may be a silicone-based polymer; the collapsible pan may further comprise a plurality of plates positioned at each of the base portion and the plurality of side portions; each of the plurality of plates may be comprised of a metal-based material; and the metal-based material may include aluminum.

In further features of this aspect, the collapsible pan may further comprise a plurality of tabs at opposite ends of at least some of the plurality of side portions for attaching adjacent side portions together in the use configuration; adjacent side portions may be releasably attached together when in the use configuration so as to permit quick release of the tabs, thereby freeing the plurality of side portions for pivotable adjustment; an interior baking surface of each of the base portion and the plurality of side portions may be comprised of a synthetic polymer; and the synthetic polymer may be a silicone-based polymer.

Broadly defined, the present invention according to still another aspect includes a collapsible pan that includes a base plate, a plurality of side plates, and a flexible web connecting each of the plurality of side plates to the base plate along edges thereof. The flexible web facilitates pivotable movement of each of the plurality of side plates relative to the base plate, thereby permitting adjustment between a use configuration, whereby each of the plurality of side plates is arranged generally upright relative to the base plate, and a collapsed configuration, whereby each of the plurality of side plates is arranged to lay generally flat relative to the base plate.

In features of this aspect, the flexible web may be comprised of a synthetic polymer; the synthetic polymer may be a silicone-based polymer; the plates may be comprised of a metal-based material; the metal-based material may include aluminum; the flexible web may include a plurality of tabs arranged between adjacent side plates for connecting adjacent side plates with one another; and each of the plurality of tabs may be configured to fold upon itself and attach to one of the adjacent side plates so as to releasably secure the plurality of side plates in an upright position relative to the base plate when in the use configuration.

In another feature of this aspect, at least one of the base plate and the plurality of side plates may be mechanically bonded to the flexible web. In still another feature of this aspect, at least one of the base plate and the plurality of side plates may be chemically bonded to the flexible web.

Broadly defined, the present invention according to still another aspect includes a collapsible pan that includes a base plate, a plurality of side plates, and a flexible web comprised of a synthetic polymer for connecting each of the plurality of side plates to the base plate along edges thereof and including a plurality of tabs arranged between adjacent side plates for connecting adjacent side plates with one another. The flexible web facilitates pivotable movement of each of the plurality of side plates relative to the base plate, thereby permitting adjustment between a use configuration, whereby each of the plurality of side plates is arranged generally upright relative to the base plate, and a collapsed configuration, whereby each of the plurality of side plates is arranged to lay generally flat relative to the base plate. Each of the plurality of tabs is configured to fold upon itself and attach to one of the adjacent side plates so as to releasably secure the plurality of side plates in an upright position relative to the base plate when in the use configuration.

In addition to the aforementioned aspects and features of the present invention, it should be noted that the present invention further encompasses the various possible combinations and subcombinations of such aspects and features.

DETAILED DESCRIPTION

As a preliminary matter, it will readily be understood by one having ordinary skill in the relevant art (“Ordinary Artisan”) that the present invention has broad utility and application. Furthermore, any embodiment discussed and identified as being “preferred” is considered to be part of a best mode contemplated for carrying out the present invention. Other embodiments also may be discussed for additional illustrative purposes in providing a full and enabling disclosure of the present invention. Moreover, many embodiments, such as adaptations, variations, modifications, and equivalent arrangements, will be implicitly disclosed by the embodiments described herein and fall within the scope of the present invention.

Referring now to the drawings, one or more preferred embodiments of the present invention are next described. The following description of one or more preferred embodiments is merely exemplary in nature and is in no way intended to limit the invention, its implementations, or uses.

FIG. 1is a perspective view of an embodiment of a collapsible pan10in accordance with one or more preferred embodiments of the present invention.FIG. 1depicts a collapsible pan10arranged in a use configuration having a generally rectangular base portion12and four side portions22,24connected with the base portion12along edges30,32thereof. When in the use configuration, the collapsible pan10may be used in connection with baking a wide variety of foods in a conventional baking oven. Upper edges38of at least some of the side portions may be curved to provide a location by which the collapsible pan10may be gripped when in the use configuration. In a preferred embodiment, shown inFIG. 1, upper edges38of opposite side portions22of the rectangular pan shape are curved. While the collapsible pan10ofFIG. 1is shown with a generally rectangular shape, it is also within the scope of the present invention for the collapsible pan in accordance with one or more preferred embodiments to have any of a range of possible shapes and sizes.

FIG. 2is a side view of the collapsible pan10ofFIG. 1, shown in the use configuration;FIG. 3is a front side view of the collapsible pan10ofFIG. 2; andFIG. 4is a top view of the collapsible pan10ofFIG. 2. As shown inFIGS. 1-4, the collapsible pan10further includes connection tabs18located at both ends of side portions24. The connection tabs18are configured for releasable attachment at corresponding attachment pins20at both ends of side portions22. As will be explained in greater detail below, securement of the connection tabs18of side portions24to the attachment pins20of side portions22releasably retains the collapsible pan10in the use configuration.

The collapsible pan10in the use configuration defines a partial enclosure having a baking surface42arranged interiorly of the pan10and a heat distribution surface14arranged exteriorly of the pan10. In a preferred embodiment, the baking surface42is advantageously comprised of silicone so as to provide a durable, flexible, and non-stick surface for baking The heat distribution surface14is preferably comprised of a metal material such as aluminum so as to facilitate even distribution of heat during baking As shown inFIGS. 1-4, the baking surface42is shown as a solid silicone cover that extends throughout the interior of the collapsible pan10, including the interior sides of the base portion12and the side portions22,24. As further shown inFIGS. 1-4, the heat distribution surface14may be comprised of a plurality of plates44situated on the exterior sides of the base portion12and the side portions22,24. As will be explained in greater detail below, the use of separate plates44for the heat distribution surface may further enhance baking quality. Furthermore, the plates44provide structure and durability to the collapsible pan10when arranged for use. In a preferred embodiment, each of the plates44is made of aluminum.

In addition to the foregoing, it is further contemplated that the heat distribution surface14, and specifically the plates44, may be composed of a plastic material, such as a synthetic polymer. In a preferred embodiment, the synthetic polymer that may be used is nylon 6,6. In this regard, the collapsible pan10may be used in a microwave setting. Furthermore, it is contemplated that each of the baking surface42and the heat distribution surface14be composed of a synthetic polymer, such as nylon 6,6.

FIG. 9is a fragmentary side cross-sectional view of a portion of the collapsible pan ofFIG. 6taken along line9-9. As shown inFIG. 9, the plates44of the heat distribution surface14and the baking surface42may be attached together with an adhesive40or other bonding agent. While a range of adhesive materials may be used, the adhesive40is preferably selected so as to be functional in a high heat environment such as would be common in a baking oven.

FIG. 5is a bottom view of the collapsible pan10ofFIG. 1, shown in the collapsed configuration, andFIG. 6is a top view of the collapsible pan10ofFIG. 5.FIGS. 5 and 6depict the collapsible pan10in a collapsed configuration. In the collapsed configuration, each of the four side portions22,24are released from one another and lay generally flat relative to the base portion12. Moreover, when in the collapsed configuration, the collapsible pan10is generally flat. As shown inFIG. 6, the connection tabs18extend at both ends of oppositely positioned side portions24. In order to permit the connection tabs18to have flexibility, no plate44is adhered to the connection tabs18. As such, in a preferred embodiment, the connection tabs18are comprised of silicone.

As further shown inFIGS. 5-6, an aperture36is arranged in each of the connection tabs18. The apertures36correspond generally to the attachment pins20located at both ends of the exterior side of oppositely positioned side portions22. In this regard, the attachment pins20of side portions22are configured for placement within the apertures36of the connection tabs18of adjacent side portions24. When the attachment pins20are placed within the corresponding apertures36of the connection tabs18, the collapsible pan10is converted from the collapsed configuration to the use configuration. As shown inFIGS. 1-4, the side portions22,24bend along the edges30,32where each is connected with the base portion12to be in a generally upright position to define four walls of the collapsible pan10. Because each edge30,32is also an intersection point in between adjacent plates44, the edges30,32may function as a hinge about which the side portions22,24pivot to be adjusted between the collapsed configuration and the use configuration.

As shown inFIGS. 1-6, the side portions22,24are releasably attached to one another by means of an attachment pin20configured for placement in corresponding apertures36of the connection tabs18. It is also contemplated that other mechanisms of attachment may be used to attach the side portions22,24together, including, but not limited to clasps, snaps, clips, and pressure fit holes.

As discussed above, the edges30,32where the side portions22,24connect with the base portion12of the collapsible pan10function as a hinge about which the side portions22,24may pivot. Specifically, the edges30,32provide a location where separate, adjacently-positioned plates44of the heat distribution surface14abut one another. As such, no plate44is specifically arranged along the edges30,32. In this regard, the absence of the plates44of the heat distribution surface14along the edges30,32of the collapsible pan10facilitates greater heat along the edges30,32during baking Higher heat along the edges30,32thereby provides the food item being baked with crisp corner edges where the food item contacted the edges30,32of the collapsible pan10during baking Crisp corners in food items such as cakes and bread loaves typically complement the overall baking process, whereby the baked food item can be removed from the collapsible pan10with ease.

Additionally, the collapsible pan10may be released quickly to permit adjustment from the use configuration to the collapsed configuration. As discussed above, the baking surface42is preferably comprised of a durable, flexible material, such as silicone, that extends as a solid cover throughout the entire baking surface42. As such, when the side portions22,24are attached together when the collapsible pan10is in the use configuration, tension exists in the baking surface42along edges30,32that urges the side portions22,24to adjust downward to lay flat relative to the base portion12. Placement of the attachment pins20in corresponding apertures36of the connection tabs18provides sufficient structure to the collapsible pan10to overcome the natural tension in the baking surface42along edges30,32, thereby preventing the collapsible pan10from collapsing during baking Once baking is complete, the natural tension in the baking surface42along edges30,32permits the collapsible pan10to be quickly released from the use configuration to the collapsed configuration. An inward pushing force applied to both side portions22of the collapsible pan10removes the attachment pins20from the corresponding apertures36of the connection tabs18, thereby permitting the natural tension in the baking surface to pull the side portions22,24downward to lay generally flat relative to the base portion12. In this manner, once baking is complete, the collapsible pan10may be quickly and easily converted from the use configuration to the collapsed configuration, thereby leaving the baked food item resting on the base portion12and free from the side portions22,24. Accordingly, the baked food item may be removed easily from the collapsible pan10, and the collapsible pan10may be cleaned and prepared for storage.

Advantageously, because the collapsible pan10in the collapsed configuration provides a flat, relatively seamless surface, the collapsible pan10does not have difficult-to-reach corners as in conventional pans, where crumbs and grime typically accumulate in a pan after use. In this regard, the collapsible pan10in the collapsed configuration is easier to clean than conventional pans. Additionally, when in the collapsed configuration, the collapsible pan10has a relatively flat shape and, thus, may be more easily placed into a conventional dishwasher.

FIG. 7is a top view of the collapsible pan10ofFIG. 5, folded in half, andFIG. 8is a side view of the collapsible pan10ofFIG. 7. As shown inFIG. 5andFIGS. 7-8, the collapsible pan10may further include a seam16that extends across the length or width of the collapsible pan10at the heat distribution surface14. As shown specifically inFIG. 5, the seam16preferably extends across both the base portion12and the immediately adjoining side portions24. In particular, separate, adjacently-positioned plates44of the heat distribution surface14abut one another along the seam16at each of the base portion12and the two immediately adjoining side portions24. The absence of the plates44along the seam16leaves the baking surface42without the corresponding heat distribution surface14at the seam16. As the baking surface42is preferably a durable, flexible material, such as silicone, the collapsible pan10may be folded when in the collapsed configuration along the seam16. As shown inFIGS. 7-8, folding of the collapsible pan10along the seam16reduces the size of the collapsible pan10even further so as to permit storage of the collapsible pan10in even smaller locations. While a single seam16is shown inFIGS. 6-8, it is contemplated that the collapsible pan10may have multiple seams in several locations to facilitate additional folding. In a preferred embodiment, the collapsible pan10has an overall thickness of ⅛ inch or less when in the collapsed configuration. Thus, when folded in half as shown inFIGS. 7-8, the collapsible pan10preferably has an overall thickness of ¼ inch or less.

FIG. 10is a perspective view of an embodiment of a collapsible pan carrier50in accordance with one or more preferred embodiments of the present invention. The collapsible pan carrier50is configured with a baking sheet lid60and a retaining strap52for securing the baking sheet lid52to the carrier50and providing the carrier50with a handle by which the carrier50may be transported. Groove plates56at either side of both ends of the carrier50permit side portions62of the baking sheet lid52to be slid into place over the carrier50. A central portion64of the baking sheet lid52is thereby retained in covering position on the carrier50. In this regard, the carrier50may be transported with relative ease.

The retaining strap52may be selectively adjusted to any desired length. In some embodiments, the retaining strap may be adjusted in length to be used as a hand grip to permit the carrier50to be carried by hand or as a shoulder strap to permit the carrier50to be carried over a user's shoulder. In this regard, the retaining strap62includes an adjustment mechanism68to permit selective adjustment of the length of the retaining strap62. While the adjustment mechanism68may include a wide range of possible adjustment devices, in one contemplated embodiment, the adjustment mechanism is a slider70through which an end of the retaining strap is engaged.

FIG. 11is a perspective view of the collapsible pan carrier50ofFIG. 10, shown with the baking sheet lid60removed. As shown inFIG. 11, the baking sheet lid60of the carrier50may be unstrapped and removed from the carrier50. The carrier50may then be arranged on its side to reveal the contents stored therein. Interiorly, the carrier50includes a plurality of shelves54, each configured for supporting a collapsible pan10in the collapsed configuration. Shelves54may be sized to accommodate collapsed pans of varying sizes and shapes. Shelves54may further accommodate a collapsible pan10that has been folded one or more times. In this regard, the carrier50may be arranged as a shelf rack to facilitate accessibility to any collapsible pans stored therein for ease of use. Furthermore, the carrier50, when arranged on its side as shown inFIG. 11, provides an aesthetically pleasing appearance if arranged for use within a home. Advantageously, when the retaining strap52is removed and the carrier50is placed on its side, the carrier50can function as a table top or support surface for supporting pans or other miscellaneous cooking articles.

FIG. 12is a perspective view of the baking sheet lid60of the collapsible pan carrier50ofFIG. 10, shown in a use configuration. When removed from the carrier50, the baking sheet lid60may be configured for use as a baking sheet. The baking sheet lid60includes a central portion64and two side portions62attached at either end of the central portion64. The baking sheet lid60may further be configured to have a baking surface on one side thereof and a heat distribution surface on the other side thereof. In this regard, the baking surface of the baking sheet lid60may be comprised of silicone, and the heat distribution surface may be comprised of aluminum plates placed to correspond with each of the central portion64and the side portions62. In this regard, the plates would not interfere with folding of the side portions62relative to the central portion64when configuring the baking sheet lid60in covering position on the carrier50. In another preferred embodiment, each of the baking surface and the heat distribution surface of the baking sheet lid60are comprised of silicone. In another preferred embodiment, both the baking surface and the heat distribution surface of the baking sheet lid60are plastic surfaces made from a synthetic polymer, such as nylon 6,6. In still another preferred embodiment, the baking surface of the baking sheet lid60is comprised of silicone, and the heat distribution surface of the baking sheet lid60is comprised of a synthetic polymer, such as nylon 6,6.

As shown inFIGS. 10 and 12, the side portions62of the baking sheet lid60are configured for pivotable adjustment relative to the central portion64. In this regard, the baking sheet lid60may be folded to a smaller size for storage. Furthermore, as specifically shown inFIG. 10, the baking sheet lid60may be folded so as to cover the carrier50when adapted for long term storage or transportation. When folded to a smaller size, the baking sheet lid60is advantageously sized to be stored in one of the shelves54of the carrier50when the carrier50is in use as a shelf rack.

FIG. 13andFIG. 14are respective bottom and top views of a collapsible muffin pan80, shown in a use configuration, in accordance with one or more preferred embodiments of the present invention.FIG. 15is a side view of the collapsible muffin pan80ofFIG. 13, shown in the use configuration, andFIG. 16is a side of the collapsible muffin pan80ofFIG. 13, shown in a collapsed configuration. The collapsible muffin pan80includes a plurality of wells82that are configured to be collapsible inwardly to be relatively flat against a top surface88of the pan80. As shown inFIGS. 13-16, each well82has a plate84positioned exteriorly of the well82and at the bottom thereof to provide a bottom surface that may be heated during the baking process.

Additionally, as shown inFIGS. 15-16, each well82has flexible sidewalls86that may be collapsed inwardly. It is contemplated that the sidewalls86may be collapsed inwardly in an accordion-like manner such that the wells82lay nearly flat against the top surface of the muffin pan80. Advantageously, when in the collapsed configuration shown inFIG. 16, the muffin pan80may be stored in a much smaller space. In a preferred embodiment, the sidewalls86of the muffin pan80are composed of a silicone-based material that provides flexibility to the pan and performs well in a high heat environment such as a baking oven. Additionally, the interior bottom surface of each of the wells82may be covered in a silicone-based material such that the entire interior portion of each of the wells82is composed of the silicone-based material. In this regard, the interior surface of each of the wells82may be a non-stick surface to facilitate the removal of muffins or other food items from the muffin pan80upon completion of the baking process.

FIG. 17is a perspective view of another embodiment of a collapsible pan110in accordance with one or more preferred embodiments of the present invention.FIG. 17depicts a collapsible pan110arranged in a use configuration having a generally rectangular base portion112and four side portions122,124extending from the base portion112. The side portions122,124are bendable at edges130,132thereof that connect each side portion122,124with the base portion112. When in the use configuration, the collapsible pan110may be used in connection with baking a wide variety of foods in a conventional baking oven. While the collapsible pan110ofFIG. 17is shown with a generally rectangular shape, it is also within the scope of the present invention for the collapsible pan in accordance with one or more preferred embodiments to have any of a range of possible shapes and sizes.

Upper edges139of at least some of the side portions122,124may extend outwardly from the collapsible pan110to provide a location by which the collapsible pan110may be gripped when in the use configuration. As shown inFIG. 17, upper edges139of opposite side portions122of the rectangular pan shape extend outwardly and have a curved edge to provide a hand grip for the collapsible pan110.

FIG. 18is a side view of the collapsible pan110ofFIG. 17, shown in the use configuration;FIG. 19is a front side view of the collapsible pan110ofFIG. 17; andFIG. 20is a top view of the collapsible pan110ofFIG. 17. As shown inFIGS. 17-20, the collapsible pan110further includes connection tabs118located at ends of side portions122,124. In a preferred embodiment, the connection tabs118are flexible connectors that connect adjacent side portions122,124of the collapsible pan110together. The connection tabs118are configured for releasable attachment at corresponding attachment pins120at ends of side portions122. In this regard, the side portion122,124may be bended upwardly at edges130,132relative to the base portion112and each connection tab118may be folded back upon itself and attached to a corresponding attachment pin120to assemble the collapsible pan110in the use configuration, thereby defining the partial enclosure of a baking pan. As will be explained in greater detail below, securement of the connection tabs118of side portions122,124to the attachment pins120of side portions122releasably retains the collapsible pan110in the use configuration such that the collapsible may be readily converted between the use configuration and the collapsed configuration.

FIG. 21is a bottom view of the collapsible pan110ofFIG. 17, shown in the collapsed configuration, andFIG. 22is a top view of the collapsible pan110ofFIG. 17.FIGS. 21 and 22depict the collapsible pan110in a collapsed configuration. In the collapsed configuration, the connection tabs118are released from the corresponding attachment pins120and the side portions122,124lay generally flat relative to the base portion112. Moreover, when in the collapsed configuration, the collapsible pan110is generally flat. As shown inFIGS. 21-22, the collapsible pan110is formed of a plurality of rigid plates144that form the base portion112and the side portions122,124. The plates144provide structure and durability to the collapsible pan110when arranged for use. In a preferred embodiment, each of the plates144is composed of a metal-based material, such as aluminum or aluminum-based materials. While the collapsible pan110is shown with a single plate144corresponding to each of the side portions122,124and the base portion112, it is contemplated that multiple plates could be used to form each of the side portions122,124and the base portion112.

The plates144are held together with a durable, flexible material, such as a synthetic polymer. In a preferred embodiment, the material holding the plates144together is a silicone polymer. While a range of polymers may be used in connection with the present invention, polymers should be selected for use in a high heat environment such as would be common in a baking oven. Advantageously, silicone polymers are understood to function well in a high heat environment and provide a non-stick surface to foods.

In a preferred embodiment, and as shown inFIGS. 17-22, the plates144are held together with a polymer-based web145composed of a synthetic polymer such as a silicone-based polymer, which provides the collapsible pan110with durability and flexibility to transition between the use configuration and the collapsed configuration. The web145is configured to permit each of the side portions122,124to bend relative to the base portion112, wherein a portion of the web145separates the plates144of the side portions122,124from the plate144of the base portion112. In this regard, the edges130,132where the side portions122,124connect with the base portion112of the collapsible pan110may function as a hinge about which the side portions122,124may pivot. Additionally, the attachment pins120may be composed of the same synthetic polymer material as the web145.

Additionally, the absence of plates along the edges130,132of the collapsible pan110, thereby leaving the web145as the exposed surface, facilitates greater heat along the edges130,132during baking Higher heat along the edges130,132provides the food item being baked with crisp corner edges where the food item is in contact with the edges130,132of the collapsible pan110during baking Crisp corners in food items such as cakes and bread loaves typically complement the overall baking process, whereby the baked food item can be removed from the collapsible pan110with greater ease.

The plates144may be attached to the web145in a variety of ways, including mechanical bonding, chemical bonding, or a combination thereof. The plates144may be connected to the web145with an adhesive or other bonding agent. While a range of adhesive materials may be used, the adhesive is preferably selected so as to be functional in a high heat environment such as would be common in a baking oven. It is also contemplated that the web145may be attached to the plates144by mechanical methods such as snap-fitting or buttoning. Additionally, the web145may be molded over or around the plates144. In a preferred embodiment, the web145is comprised of a silicone-based polymer that is injection molded around the plates144by an overmolding process. In another preferred embodiment, the web145is comprised of a silicone-based polymer that is molded with the plates144by a co-molding process.

As shown inFIGS. 21-22, the connection tabs118extend between the ends of the side portions122,124. In a preferred embodiment, the connection tabs118may be of the same material as the web145and may be integral therewith. As further shown inFIGS. 21-22, two apertures136are arranged in each of the connection tabs118. When configured for attachment to an attachment pin120, each connection tab118is folded over upon itself such that the two apertures136are aligned with one another. The folded connection tab118may then be placed against the corresponding attachment pin120of the oppositely positioned side portions122such that the attachment pin extends through both of the apertures136of the connection tab118. When the attachment pins120are placed within the corresponding apertures136of the connection tabs118, the collapsible pan110is converted from the collapsed configuration to the use configuration. As shown inFIGS. 17-20, the side portions122,124bend along the edges130,132where each is connected with the base portion112to be in a generally upright position to define four walls of the collapsible pan110. Because each edge130,132also represents an intersection between adjacent plates144, the edges130,132function as a hinge about which the side portions122,124may pivot to be adjusted between the collapsed configuration and the use configuration.

As shown inFIGS. 17-22, the side portions122,124are releasably attached to one another by means of an attachment pin120configured for placement in corresponding apertures136of the connection tabs118. It is also contemplated that other mechanisms of attachment may be used to attach the side portions122,124together, including, but not limited to clasps, snaps, clips, buttons and pressure fit holes.

The collapsible pan110may also be released quickly to permit adjustment from the use configuration to the collapsed configuration. The material used to form the web145, such as a silicone-based polymer, may be configured to provide the collapsible pan110with a tendency to lay flat in the collapsed configuration. As such, when the side portions122,124are attached together when the collapsible pan110is in the use configuration, tension exists along edges130,132that urges the side portions122,124to adjust downward to lay flat relative to the base portion112. Placement of the attachment pins120in corresponding apertures136of the connection tabs118provides sufficient structure to the collapsible pan110to overcome the natural tension along edges130,132, thereby preventing the collapsible pan110from collapsing during baking Once baking is complete, the natural tension along edges130,132permits the collapsible pan110to be quickly released from the use configuration to the collapsed configuration. An inward pushing force applied to both side portions122of the collapsible pan110removes the attachment pins120from the corresponding apertures136of the connection tabs118, thereby permitting the natural tension in the baking surface to pull the side portions122,124downward to lay generally flat relative to the base portion112. In this manner, once baking is complete, the collapsible pan110may be quickly and easily converted from the use configuration to the collapsed configuration, thereby leaving the baked food item resting on the base portion112and free from the side portions122,124. Accordingly, the baked food item may be removed easily from the collapsible pan110, and the collapsible pan110may be cleaned and prepared for storage.

Advantageously, because the collapsible pan110in the collapsed configuration provides a flat, relatively seamless surface, the collapsible pan110does not have difficult-to-reach corners as in conventional pans, where crumbs and grime typically accumulate in a pan after use. In this regard, the collapsible pan110in the collapsed configuration is easier to clean than known pans. Additionally, when in the collapsed configuration, the collapsible pan110has a relatively flat shape and, thus, may be more easily placed into a conventional dishwasher.

FIG. 23is a perspective view of a third embodiment of a collapsible pan210in accordance with one or more preferred embodiments of the present invention.FIGS. 24-25are views of the collapsible pan210ofFIG. 23, shown in a use configuration.FIG. 26-28are views of the collapsible pan210ofFIG. 23, shown in a collapsed configuration. In design and function, the collapsible pan210is similar to the collapsible pan110depicted inFIGS. 17-22.

FIG. 29is a perspective view of a fourth embodiment of a collapsible pan310in accordance with one or more preferred embodiments of the present invention. In accordance with one or more aspects, the collapsible pan310may be manufactured with a metal material that is insert-molded to form the rigid plates and a silicone-based polymer that is overmolded over the plates to form the flexible web.

FIG. 30is a perspective view of a fifth embodiment of a collapsible pan410in accordance with one or more preferred embodiments of the present invention. In accordance with one or more aspects, the collapsible pan410may be manufactured with a metal material that is insert-molded to form the rigid plates and a silicone-based polymer that is co-molded with the plates to form the flexible web. The co-molding process may enhance the bond between the plates and the web. In a preferred embodiment, the metal material may be a perforated metal. The collapsible pan410may further include slotted handle grips by which the pan may be grasped by a user.

FIG. 31is a perspective view of a sixth embodiment of a collapsible pan510in accordance with one or more preferred embodiments of the present invention. In accordance with one or more aspects, the collapsible pan510may be manufactured with metal-based, die cut banding that is insert-molded and a silicone-based polymer that is overmolded over the metal banding. In this regard, the metal banding provides rigidity to the collapsible pan510and permits the collapsible pan510to be collapsed in an accordion-like manner.

FIG. 32is a perspective view of a seventh embodiment of a collapsible pan610in accordance with one or more preferred embodiments of the present invention. In accordance with one or more aspects, the collapsible pan610may be manufactured with die cut metal panels and a mechanically-bonded silicone sheet that is attached to the metal panels with push through snap fittings or button locks. In this regard, flaps extending from oppositely-positioned side portions of the collapsible pan610may be button locked to adjoining side portions in order to assemble the pan in the use configuration. The collapsible pan610may further include slotted handle grips by which the pan may be grasped by a user.

FIG. 33is a perspective view of an eighth embodiment of a collapsible pan710in accordance with one or more preferred embodiments of the present invention. In accordance with one or more aspects, the collapsible pan710may be manufactured with die cut metal panels and a mechanically-bonded silicone sheet that is attached to the metal panels with push through snap fittings or button locks. Each connection tab extending between adjacent side portions may be folded back upon itself and buttoned or snap fit to a side portion to seal the corners of the collapsible pan710.

FIG. 34is a perspective view of a ninth embodiment of a collapsible pan810in accordance with one or more preferred embodiments of the present invention. In accordance with one or more aspects, the collapsible pan810may be manufactured with an insert-molded die cut armature metal material to form the rigid plates and a silicone-based polymer that is co-molded with the plates to form the flexible web. The co-molding process may enhance the bond between the plates and the web. In a preferred embodiment, edges and corners where the side portions intersect with the base portion may be inverted after use of the collapsible pan810in order to aid in the cleaning process. Inverting the collapsible pan810may enhance access to such edges and corners that may otherwise be difficult to reach.

FIG. 35is a perspective view of a tenth embodiment of a collapsible pan910in accordance with one or more preferred embodiments of the present invention. In accordance with one or more aspects, the collapsible pan910may be manufactured with die cut metal panels and a mechanically-bonded silicone sheet that is attached to the metal panels with push through snap fittings or button locks. In this regard, flaps extending from oppositely-positioned side portions of the collapsible pan910may be button locked to adjoining side portions in order to assemble the pan in the use configuration. In a preferred embodiment, attachment pins at the side portions of the collapsible pan910for use in assembling the collapsible pan910in the use configuration may be configured to have a particular shape, such as a heart shape.

FIG. 36is a perspective view of an eleventh embodiment of a collapsible pan1010in accordance with one or more preferred embodiments of the present invention. In accordance with one or more aspects, the collapsible pan1010may have an insert-molded base plate and metal-based armature at the side plates that permits the side plates to be collapsed relative to the base plate in an accordion-like manner. The web may be incorporated with the collapsible pan1010as a co-molded silicone-based polymer. The collapsible pan1010may further include handle grips that are hingedly attached at the sides of the pan to permit each grip to pop up when the collapsible pan1010is in the use configuration.

FIG. 37is a perspective view of a twelfth embodiment of a collapsible pan1110in accordance with one or more preferred embodiments of the present invention. In accordance with one or more aspects, the collapsible pan1110may be manufactured with a web that is injection molded with a silicone-based polymer arranged as a gasket having a plurality of cavities. Plates in the form of die cut metal sheets may be adhered or mechanically fastened relative to the web. The silicone-based polymer of the web may thereby provide the collapsible pan1110with flexibility at the ends of the plates in order to facilitate folding of the connection tabs to seal and close off the corners of the pan when in the use configuration.

Based on the foregoing description, it will be readily understood by those persons skilled in the art that the present invention is susceptible of broad utility and application. Many embodiments and adaptations of the present invention other than those specifically described herein, as well as many variations, modifications, and equivalent arrangements, will be apparent from or reasonably suggested by the present invention and the foregoing descriptions thereof, without departing from the substance or scope of the present invention. Accordingly, while the present invention has been described herein in detail in relation to one or more preferred embodiments, it is to be understood that this disclosure is only illustrative and exemplary of the present invention and is made merely for the purpose of providing a full and enabling disclosure of the invention. The foregoing disclosure is not intended to be construed to limit the present invention or otherwise exclude any such other embodiments, adaptations, variations, modifications or equivalent arrangements, the present invention being limited only by the claims appended hereto and the equivalents thereof.