Thermally insulated microwave cooking container
OwnerKevin William Joseph Clarkeinventor
Life of this patent
Estimating the term…
Abstract
A container comprising an inner thermoformed vessel (1) and an outer thermoformed vessel (2), arranged the one within the other. The side walls (9) of the outer forming (2) surround the side walls (10) of the inner forming (1). The outer side walls has inwardly projecting ribs (11), which abut the inner side walls (10) to maintain an air gap (12) between the formings, with the formings being centered with respect to each other. The air gap is present between the bases (13, 14) of the inner and outer formings, with the outer forming being provided with ribs in its base also. In use food in the container can be heated in a micro-wave oven until hot. The air gap separates a handler's fingers from direct thermal contact with the hot food so that the container remains comfortable to handle.
Claims32
A plastics material food packaging container comprising:
- a first plastics material vessel;
- a second vessel arranged with its side wall(s) surrounding the side wall(s) of the first vessel;
- projecting ribs on the first vessel projecting outwardly, whereby heat from contents of the container, i.e. within the inner, first vessel, does not directly heat the entire wall(s) of the outer, second vessel;
- characterised in that
- rims on the first and second vessels, the rims having complementary formations for inter-engagement thereof;
- and
- the vessels being secured together by ultrasonic welding.
A plastics material food packaging container comprising:
- a first plastics material vessel;
- a second vessel arranged with its side wall(s) surrounding the side wall(s) of the first vessel;
- projecting ribs on the second vessel projecting inwardly, whereby heat from contents of the container, i.e. within the inner, first vessel, does not directly heat the entire wall(s) of the outer, second vessel;
- characterised in that
- rims on the first and second vessels, the rims having complementary formations for inter-engagement thereof;
- and
- the vessels being secured together by ultrasonic welding.
A plastics material food packaging container comprising:
- a first plastics material vessel;
- a second vessel arranged with its side wall(s) surrounding the side wall(s) of the first vessel;
- projecting ribs on the first vessel projecting outwardly and projecting ribs on the second vessel projecting inwardly, whereby heat from contents of the container, i.e. within the inner, first vessel, does not directly heat the entire wall(s) of the outer, second vessel;
- characterised in that
- rims on the first and second vessels, the rims having complementary formations for inter-engagement thereof;
- and
- the vessels being secured together by ultrasonic welding.
Dependencies are inferred from the claim text.