Envelopes – wrappers – and paperboard boxes – Paperboard box – Box material includes a coating or a nonpaperboard...
Patent
1974-01-17
1976-01-20
Price, William
Envelopes, wrappers, and paperboard boxes
Paperboard box
Box material includes a coating or a nonpaperboard...
206403, 206518, 220 4E, 229 43, B65D 4302
Patent
active
039332950
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.
REFERENCES:
patent: 3292810 (1966-12-01), Schechter
patent: 3346400 (1967-10-01), Roesner
patent: 3473649 (1969-10-01), Posso
patent: 3511433 (1970-05-01), Andrews et al.
patent: 3526077 (1970-09-01), Mixon
patent: 3563445 (1971-02-01), Clayton
patent: 3734279 (1973-05-01), Fisher, Jr.
Bernstein Bruce H.
Dolco Packaging Corporation
Price William
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