Title: Insulative packaging device

Abstract: A packaging device forming an insulative structure for hot food sandwiches. The packaging device includes a pair of identical members, which when interconnected, form an insulative food container. Each of the members comprise a dish-shaped portion whose periphery has a planar flange. The inner surface of the dish-shaped portion is stipled to define a plurality of protuberances interconnected by a plurality of valleys. Moisture from the food or sandwich is allowed to accumulate in the valleys, thus preventing the food and sandwiches from becoming soggy. Channels can also be formed on the planar surface for enabling moisture to escape from the packaging device. A bayonet locking arrangement for the members comprises studs formed on the planar surfaces of the members, each of the studs interacting with locking slots formed opposite the studs on the opposite planar surface of the other member. The diameter of the studs is slightly greater than the width of the slots providing a tight friction fit therebetween.

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Inventors: Congleton, Wayne L. (Whittier, CA, US)

Application Number: 434466
Filing Date: 1974-01-17
Publication_date: 1976-01-20
Assignee: Dolco Packaging Corporation (Burbank, CA)
Primary Class(es): 229/406 206/403, 206/518, 220/4.24, 229/125.36, 426/112, 426/113, 426/128
Other Classes:
US Patent Ref:

3292810	Dec, 1966	Schechter	220/4.
3346400	Oct, 1967	Roesner	229/2.
3473649	Oct, 1969	Posso	206/404.
3511433	May, 1970	Andrews et al.	220/4.
3526077	Sep, 1970	Mixon	229/2.
3563445	Feb, 1971	Clayton	229/2.
3734279	May, 1973	Fishe, Jr.	229/2.

Other Refs:
Primary Examiner: Price, William
Assistant Examiner: Bernstein, Bruce H.
Attorney: Nilsson, Robbins, Bissell, Dalcarn & Berliner