Envelopes – wrappers – and paperboard boxes – Paperboard box – Separate reinforcing element
Reexamination Certificate
1998-11-16
2001-04-03
Elkins, Gary E. (Department: 3727)
Envelopes, wrappers, and paperboard boxes
Paperboard box
Separate reinforcing element
C229S087080, C229S938000, C493S287000, C493S296000, C493S309000
Reexamination Certificate
active
06209784
ABSTRACT:
BACKGROUND OF THE INVENTION
The present invention relates to an improved cylindrical collar as typically used in the fast food industry for placing around specialty sandwiches, such as a multilayered hamburger or such, thereby maintaining the lateral alignment of the sandwich bun halves, meat patty, and selected toppings when wrapped in a paper sandwich wrap or placed in a clamshell container. Also the collar quickens the building of a sandwich as the collar as serves an external form when the sandwich is assembled within the collar.
BRIEF SUMMARY OF THE INVENTION
Disclosed herein is an improved, cylindrical, paperboard, fast food, sandwich collar for placing around a specialty sandwich such as a multilayer hamburger or such. The collar blank is cut from flat paperboard stock in the form of an elongated rectangle which is folded back over itself having its free ends adhesively attached to one another whereby the resulting flat preform, suitable for shipping, may be expandingly opened to form a cylindrical configuration. Diametrically opposing tongue like tabs are cut into the paperboard surface. Each tab is cut on three sides thereby being hingedly connected to the collar by its uncut side.
When the flat preform is expanded into its cylindrical shape the tabs act as cantilever springs upon the inside surface of the collar thereby maintaining the open cylindrical shape for inserting therein a specialty food product.
Although the collar, as disclosed herein is directed to the fast food industry it is to be understood that the invention disclosed and taught may be used for a variety of end uses other than a sandwich wrap in the fast food industry. For example, the collar may be used as a spacer within a shipping container to encircle and protect damageable products during shipping. Further the collar taught herein may be used as a temporary arm band to identify persons of authority or of a select group. Still further the collar may be given a crown like configuration and used by children or issued as a promotional tool for advertising. Other end uses will surely come to mind by imaginable persons.
Because of the wide range of possible uses for my collapsible collar the end use thereof is not to be construed as applicable solely to the fast food industry as a sandwich packaging device. The sandwich packaging device, as disclosed herein, was merely the catalyst for discovery of the broad invention taught and claimed below.
REFERENCES:
patent: 1593302 (1926-07-01), Hiatt
patent: 1991746 (1935-02-01), Hiatt
patent: 2632563 (1953-03-01), MacIntyre
patent: 2750294 (1956-06-01), Peters
patent: 3382779 (1968-05-01), Lynas
patent: 3964669 (1976-06-01), Sontag et al.
patent: 4573570 (1986-03-01), Cortopassi
patent: 4586649 (1986-05-01), Webinger
patent: 4595137 (1986-06-01), Kupersmit
Elkins Gary E.
Skinkiss Ralph J.
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