Food storage container

• US 4,537,044 A
• Filed: 01/11/1985
• Issued: 08/27/1985
• Est. Priority Date: 01/11/1985
• Status: Expired due to Fees

• Current Assignee: David Putnam
• Original Assignee: David Putnam
• Inventors: Putnam, David
• Primary Examiner(s): King, Lloyd L.
• Application Number:
  US06/690,778
• Time in Patent Office: 228 Days
• Field of Search: 62/457, 62/464, 62/371, 220/23, 220/215, 220/902, 220/331, 16/115, 165/75
• US Class Current: 62/371
• CPC Class Codes: A45C 11/20 Lunch or picnic boxes or the like
• CPC Class Codes: A47J 41/0044 comprising heat or cold storing elements or material, i.e. energy transfer within the vessel
• CPC Class Codes: F25D 2303/0821 the element placed in a compartment which can be opened without the need of opening the container itself
• CPC Class Codes: F25D 2303/0844 above the product
• CPC Class Codes: F25D 2331/804 Boxes
• CPC Class Codes: F25D 3/08 portable, i.e. adapted to be carried personally
• CPC Class Codes: F25D 3/14 portable, i.e. adapted to be carried personally
• CPC Class Codes: Y10S 220/902 Foam

Abstract

A picnic or similar type food storage container that uses a selected appropriate source for either heat or cold input to the food, in which the source is properly below the food in the heating mode, and above the food in the cooling mode, to thereby provide an enhanced temperature control over the food.

Claims

1. In a food storage container of the type having a main housing bounding a food storage compartment and means for selectively providing an input either of heat or cold to the food contents therein, the improvements to said container comprising an auxiliary housing formed on one end of said main housing bounding an operative compartment in adjacent heat and cold transferring relation to said food storage compartment, a first lid for an opening into said auxiliary housing operative compartment for selectively inserting thereinto a source of heat or cold, a second lid for an opening into said food storage compartment from the end opposite from said auxiliary housing for selectively inserting thereinto food contents requiring an input of heat or cold, and a handle movable into first and second container-carrying positions, said first handle position establishing an orientation of said container in which a cold source is in said auxiliary housing operative compartment and is above said food storage compartment for transferring cold in a descending direction thereto, said second handle position establishing a 180 degree reversal in orientation of said container in which a heat source is in said auxiliary housing operative compartment and is below said food storage compartment for transferring heat in an ascending direction thereto, whereby the efficiency of the transfer to said food contents of either heat or cold is enhanced by the container orientation and the direction of said transfer.

2. A food storage container as claimed in claim 1, wherein said main housing and said auxiliary housing are threadably connected to each other, and said first lid is pivotally connected to said auxiliary housing.

3. A food storage container as claimed in claim 2, wherein said main housing has vertically oriented tracks on opposite sides thereof, and said handle has three legs defining a U-shape and has the free ends of two of said legs slidably disposed in said tracks, so as to be adapted to assume said first and second carrying positions.

4. A food storage container as claimed in claim 3, wherein said first lid has heat source engaging hooks on its inner surface to engage and hold said heat source during the 180 degree reversal and orientation in said container.

5. A food storage container as claimed in claim 4, wherein said auxiliary housing has first and second vent openings therein, said first vent opening serving both as an exit for fluid discharge of said cold source and as an air exit for said heat source, and said second vent openings serve as an air inlet for said heat source.