Receptacles – Flaccid wall material permanently united with a skeletal...
Patent
1976-07-06
1977-08-09
Lowrance, George E.
Receptacles
Flaccid wall material permanently united with a skeletal...
206219, 206520, 229 15B, B65D 2102, B65D 2518, B65D 8572
Patent
active
040405370
ABSTRACT:
A plastic cup is provided of the thin wall variety having inner and outer spaced walls with an insulating air space therebetween. Successive cups in a telescoped stack seal effectively together so that a food concentrate or the like placed in the bottom of each cup will be protected against contamination and spoilage. To this end, the cups are provided with stacking rings and cylindrical sealing surfaces whereby a certain degree of movement between adjacent telescoped cups is permissible without allowing the entrance of air into the space between such adjacent cups. The inner and outer walls of each cup are spaced apart in the stacking and sealing ring area to allow pivotal movement of an inner cup wall with regard to its corresponding outer cup wall, whereby a telescoped stack of nested cups can flex, i.e., the axis of the stack can go from straight to arcuate, without breaking the seal between adjacent telescope cups which would lead to contamination or spoilage of the food ingredient therein.
REFERENCES:
patent: 3091360 (1963-05-01), Edwards
patent: 3372830 (1968-03-01), Edwards
patent: 3443714 (1969-05-01), Edwards
patent: 3512677 (1970-05-01), Kovac
Illinois Tool Works Inc.
Lowrance George E.
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