Disposable foil pan

Details Disposable foil pan Disposable foil pan

1999-06-30

2001-09-25

Shoap, Allan N. (Department: 3727)

Envelopes, wrappers, and paperboard boxes

Paperboard box

Box material includes a coating or a nonpaperboard...

C220S912000, C220S671000, C220S573100

Reexamination Certificate

active

06293458

ABSTRACT:

The present invention relates to a disposable foil pan which can be used for holding and cooking relatively heavy items without having the sides of the pan collapse. More particularly the present invention relates to a one-piece disposable aluminum foil roasting pan for relatively large items such as hams, turkeys, chickens and having inclined sides and end walls each formed of at least two large segmented tubular strengthening flutes.
BACKGROUND OF THE INVENTION
Aluminum foil pans are used for cooking, baking and roasting since they are efficient in quickly distributing heat and are also relatively inexpensive thus, making them disposable. A wide variety of shapes and sizes of aluminum foil pans have been built and developed. Generally the roasting pans for roasting are rectangle, oval or square in shape. Also various types of formations such as ribs are typically provided in the side and end walls of the pans. Typical of these ribs are shown and U.S. Pat. Nos. 4,717,038; 3,958,504; and 4,616,762. In these pans it has been found that the ribs are not sufficient to prevent the side walls from collapsing when someone inadvertently tries to pick up the pan by either the ends or sides. Therefore it would be desirable to have a roasting pan which has better strength than the typical aluminum foil roasting pan.
SUMMARY OF THE INVENTION
In accordance with the present invention I provide a disposable foil pan having side and end walls and a top ridge surrounding the pan. Each of the end walls has at least two end wall segmented flutes that have a combined width equal to at least 30% of the length of each end wall. The end wall segmented flutes have a concave surface facing an inside of the pan and a convex surface forming an outer end wall of the pan. Each of the side walls have at least three side wall segmented flutes. The side wall segmented flutes have a combined width equal to at least 40% of the length of each side wall. The side wall segmented flute also have a concave surface facing the inside of the pan and a convex surface forming an outer side wall of the pan.
Another object of the present invention is to provide a one-piece disposable aluminum foil pan i.e. roasting pan having inclined side and end walls inclined at 60° to 90° and a top ridge surrounding the pan with a rolled-over bead at the end of the ridge. In some uses, the rolled-over bead only partially surrounds the ridge. Each of the end walls has at least two end wall segmented tubular flutes. The end wall segmented tubular flutes extend the width of the end wall, and have a combined width equal to at least 30% of the length of each end wall. Each end wall segmented tubular flute having a concave surface facing an inside of said pan and a convex surface forming an outer inclined wall of the pan. Each end wall segmented tubular flute has an end wall inner and outer radius, that are the same throughout the length of the end wall flute. The end wall flute defines a segmented arc that extends for 30-90°, has a radius of about 0.625 to 2.25 inches, and a depth of about ⅛ to ⅜ inches. The pan side walls having at least three side wall segmented tubular flutes, which are preferably the same as the end wall segmented flutes. The side wall segmented tubular flutes have a combined width equal to at least 40% of the length of each side wall.
Further objects, features, and advantages of the present invention will become more apparent from the following description and drawings.


REFERENCES:
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patent: 4616762 (1986-10-01), Alexander
patent: 5040698 (1991-08-01), Ramsey et al.
patent: 5048707 (1991-09-01), Hallberg
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patent: 6065629 (2000-05-01), Sarnoff et al.
patent: 6102280 (1998-03-01), Dowd

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