Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
  • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
  • B65D51/00—Closures not otherwise provided for
  • B65D51/16—Closures not otherwise provided for with means for venting air or gas
  • B65D51/1633—Closures not otherwise provided for with means for venting air or gas whereby venting occurs by automatic opening of the closure, container or other element
• • A—HUMAN NECESSITIES
  • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
  • A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
  • A47J36/00—Parts, details or accessories of cooking-vessels
  • A47J36/06—Lids or covers for cooking-vessels
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
  • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
  • B65D81/00—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents
  • B65D81/34—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents for packaging foodstuffs or other articles intended to be cooked or heated within the package
  • B65D81/3446—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents for packaging foodstuffs or other articles intended to be cooked or heated within the package specially adapted to be heated by microwaves
  • B65D81/3453—Rigid containers, e.g. trays, bottles, boxes, cups
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
  • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
  • B65D43/00—Lids or covers for rigid or semi-rigid containers
  • B65D43/02—Removable lids or covers
  • B65D43/0202—Removable lids or covers without integral tamper element
  • B65D43/0204—Removable lids or covers without integral tamper element secured by snapping over beads or projections
  • B65D43/0208—Removable lids or covers without integral tamper element secured by snapping over beads or projections on both the inside and the outside of the mouth of the container

Definitions

• the disclosure relates to a container lid, more specifically to a container lid that automatically opens its vent holes with the rise of pressure in a container.
• Containers for storing and cooking food have various shapes and sizes. Such containers usually accompany matching lids sized and structured to cover and seal the container.
• food may be placed in a microwavable container for cooking in the microwave oven, and left over food may be stored in the same container in a refrigerator.
• the food may be cooked in a microwave, placed in a refrigerator for storage, and subsequently removed from the refrigerator and placed in the microwave for reheating.
• the containers are generally closed by lids during storage to prevent spilling of its content or entering of contaminants into the containers. The lids are then removed from the containers before placing the containers in the microwave ovens to present buildup of excessive pressure within the containers.
• Embodiments relate to a container lid for sealing a container that automatically vents air or vapor when pressure within the container exceeds a threshold.
• the container lid includes a flange, a lower portion and an upper portion.
• the flange attaches onto a top end of the container.
• the lower portion extends inward and downward from the flange.
• the upper portion includes a top portion and a peripheral portion between the top portion and the flange.
• the peripheral portion is switchable between a first state where the peripheral portion is deformed upward to raise the top portion from the lower portion, and a second state where the peripheral portion is deformed downward to lower the top portion onto the lower portion.
• the peripheral portion is formed with one or more vent holes that are blocked by the lower portion in the second state but opened in the first state.
• the lower portion and the peripheral portion are separated in the first state and the lower portion contacts the peripheral portion in the second state.
• the peripheral portion switches from the second state to the first state when pressure within the container rises above a threshold.
• At least the peripheral portion is made of a flexible material.
• the flange, the lower portion and the upper portion are integrated as a single body.
• the upper portion is bistable at the first state and the second state.
• an inner end of the lower portion define a hole open towards the container.
• the peripheral portion is connected to the flange via a connection region having a thickness thinner than the peripheral portion and the flange.
• the thickness of the peripheral portion at a second part connected to the top portion is thicker than at the first part.
• the flange includes an annular body extending outwards and a hook.
• the hook has an inner rib and an inner groove that sealingly engage the container.
• Embodiments also relate to a method of operating a container lid.
• One or more vent holes formed in a peripheral portion of an upper portion of a container lid are blocked by deforming the peripheral portion downward so that the peripheral portion is lowered onto a lower portion of the container lid that extends inward and download from a flange of the container lid that attached onto a top of the container.
• the vent holes are unblocked by deforming the peripheral portion upward so that the peripheral portion is detached from the lower portion of the container lid.
• the pressure within the container is relieved by venting air or vapor through the unblocked one or more vent holes.
• the vent holes are blocked by having the lower portion contact the peripheral portion.
• the vent holes are unblocked by separating the lower portion and the peripheral portion.
• pressing force on a top portion of the upper portion is received to block the one or more vent holes by deforming the peripheral portion.
• Embodiments also relate to a container assembly including the container and the container lid.
• FIG. 1 is a perspective view of a container with a container lid popped up, according to one embodiment.
• FIG. 2 is an exploded view of the container and the container lid, according to one embodiment.
• FIG. 3 is a perspective view of the container with the container lid pushed down, according to one embodiment.
• FIG. 4 is a cross-sectional view of the container with the container lid popped up, according to one embodiment.
• FIG. 5 is a cross-sectional view of the container with the container lid pushed down, according to one embodiment.
• FIG. 6 is a flowchart illustrating a process of operating the container lid, according to one embodiment.
• Embodiments are described herein with reference to the accompanying drawings. Principles disclosed herein may, however, be embodied in many different forms and should not be construed as being limited to the embodiments set forth herein. In the description, details of well-known features and techniques may be omitted to avoid unnecessarily obscuring the features of the embodiments. In the drawings, like reference numerals in the drawings denote like elements. The shape, size and regions, and the like, of the drawing may be exaggerated for clarity. [0024] Embodiments relate to a container lid with vent holes that are blocked for storage but automatically unblocked when a container attached to the container lid is heated.
• the heating of the container lid causes the pressure to build in the container, which pushes up an upper portion of the container lid.
• the vent holes are unblocked and enables air or vapor to escape through the vent holes.
• the container lid may seal the container during storage but enable automatic venting during the heating of the container to prevent buildup of excessive pressure within the container.
• the container lid is advantageous, among other reasons, because it is simple to use, has a unitary structure for easy manufacturing, and has a reliable and simple structure that is not susceptible to damage during everyday uses.
• the container lid may be assembled onto the container for containing food items. After placing the food items in the container, the container lid may be sealed onto the container by fitting the container lid onto a top opening of the container, and then pushing down a top portion of the container lid. Such pushing action deforms a peripheral portion of the container lid, blocking vent holes in the peripheral portion, and thereby prevents contaminants from entering the container through the vent holes.
• the container sealed with the container lid may be stored (e.g., in a refrigerator).
• the container may be heated (e.g., using a microwave oven) with the container lid on. The heating of the food item increases the pressure within the container and pushes up the top portion of the container lid when the built-up pressure exceeds a threshold. In this way, the vent holes are automatically unblocked to release air and vapor from the container.
• FIG. l is a perspective view of a container assembly including a container lid 110 and a container 120, according to one embodiment.
• the container lid 110 is attached onto a top opening of the container 120 after placing a food item into the container 120.
• the container lid 110 and the container 120 are shaped in circular or cylindrical columns in FIG. 1, in other embodiments, they may have angled or elliptic shapes (e.g., square or columnal shape).
• the container lid 110 is dimensioned to fit onto the container 120 and seal the container 120.
• the container lid includes a flange 108, and an upper portion 112.
• the upper portion 112 includes a top portion 142 and a peripheral portion 106 between the flange 108 and the top portion 142.
• the peripheral portion 106 and the flange 108 are connected via a connection region 152 that is thinner to function as a scoring line relative to which the peripheral portion 106 is flexed.
• the flange 108 fits onto the container 120, as described below in detail with reference to FIGs. 4 and 5.
• the top portion 142 is at the highest location when the container lid 110 is in a popped up state (e.g., a first state), as shown in FIG. 1.
• a pushed down state e.g., a second state
• the top portion 142 is located lower than the flange 108, as shown in FIG. 3.
• the top portion is illustrated in FIG. 3 as being of a flat shape but the top portion may take various other shapes.
• the peripheral portion 106 is flexible and has a bistable configuration where in one state (e.g., the first state), the top portion 142 is popped up, and in the other state (e.g., the second state), the top portion 142 is pushed down.
• the peripheral portion 106 may be made of a material and of a thickness profile that causes the peripheral portion 106 to deform between the two states when a certain amount of force or pressure is applied to the container lid 110.
• the peripheral portion 106 is formed with vent holes 104 that penetrate the peripheral portion 106. These vent holes 104 are blocked or unblocked depending on the state of the peripheral portion 106, as described below in detail with reference to FIGS. 4 and 5.
• the container lid 110 may be of a unitary structure made of the same material.
• the entire container lid 110 may be made of silicone with different thickness at different parts of the container lid. In this way, the entire container lid 110 may be fabricated using a single injection molding process without involving separate assembling of parts.
• the top portion 142 and the flange 108 may be made of a solid material (e g., plastic) whereas the peripheral portion 106 is made of a flexible material (e.g., silicone).
• FIG. 4 is a cross-sectional view of the container 120 with the container lid 110 popped up, according to one embodiment.
• the container lid 110 has a lower portion 402 that extends downward and inward from the flange 108.
• the lower portion 402 may be connected to the flange 108 and its lower inner edge defines a hole 432 that is open to the interior of the container 120.
• the lower portion 402 is made of the same material and integrated with other portions of the container lid 110.
• the flange 108 of the container lid 110 removably secures the container lid 110 onto the container 120.
• the flange 108 may include, among other components, an annular body 412 connected to the peripheral portion 106 and the lower portion 402 and a hook 414 having an inner rib 416.
• the hook 414 is formed with an inner groove 418 at a surface facing the side wall of the flange 108.
• the container 120 has an externally protruding rim 420 at its top rim.
• the hook 414 deforms outward followed by latching of the hook 414 onto the protruding rim 420. That is, the protruding rim 420 is inserted into the inner groove 418 and the inner rib 416 engages the bottom portion of the protruding rim 420 to lock the container lid 110 onto the container 120.
• the container lid 110 is pulled from the container 120. This causes the hook 414 to deform and release the protruding rim 420 from the inner groove 418.
• connection region 106 may have a thickness t2 that is thinner than the peripheral portion and the lower portion 402 (having a thickness tl).
• the connection region 106 defines an area where most of the deformation occurs when the peripheral portion 106 is deformed downward to contact the lower portion 402 so that the vent holes 104 are fully blocked when the peripheral portion 106 is deformed downward.
• the peripheral portion 106 may have a thickness profile that varies from a location where it is connected to the connection region 106 and another location where it is connected to the top portion 142.
• container 120 and the container lid 110 are described herein as using the structure of protruding rim 420 and the inner groove 418 to secure the container lid 110 onto the container 120, various other mechanisms such as screws or solid latches may be used to secure the container lid 110 onto the container 120.
• FIG. 5 is a cross-sectional view of the container 120 with the container lid 110 pushed down, according to one embodiment.
• the peripheral portion 106 contacts the lower portion 402, and thereby, blocks the vent holes 104.
• FIG. 6 is a flowchart illustrating a process of operating the container lid 110, according to one embodiment.
• the vent holes 104 formed in the peripheral portion 106 of the container lid 110 are blocked 610 by deforming the peripheral portion 106 downward so that the peripheral portion 106 comes into contact with the lower portion 402.
• the peripheral portion 106 is deformed, for example, by pushing down a top portion 142 of the container lid 110 by a user.
• the container 120 may then be stored (e.g., in a refrigerator).
• the container 120 may then be retrieved from storage and be heated (e.g., by a microwave oven) for consumption.
• the heating of the food item increases 620 the pressure within the container 120.
• the peripheral portion 106 deforms and pops the top portion 142. In this way, the peripheral portion 106 is detached from the lower portion 402 of the container lid 110 and unblocks 630 the vent holes 104.
• Such deformation of the peripheral portion 106 occurs automatically when the pressure within the container 120 exceeds the threshold, and does not involve any manual operation by the user other than heating the container 120.
• vent holes 104 are unblocked, the pressure within the container 120 is relieved 640 by venting air or vapor through the unblocked vent holes. In this way, building up of excess pressure within the container may be prevented.

Landscapes

• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Food Science & Technology (AREA)
• Life Sciences & Earth Sciences (AREA)
• Closures For Containers (AREA)
• Chemical & Material Sciences (AREA)
• Combustion & Propulsion (AREA)
• General Engineering & Computer Science (AREA)

Applications Claiming Priority (4)

Publications (1)

Family

ID=86762752

Family Applications (1)

Country Status (2)

Citations (5)

• 2022
  • 2022-08-26 KR KR1020220107286A patent/KR102541813B1/ko active IP Right Grant
• 2023
  • 2023-06-13 WO PCT/US2023/025101 patent/WO2024006058A1/en unknown

Patent Citations (5)

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