US3766975A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Drinking receptacle
Assignee: Individual
•
Filing: 1970-09-17
•
Granted: 1973-10-23
•
Expires: 1990-09-17
Abstract
Abstract A drinking receptacle including an outer shell of insulating material and a metallic inner container with a cavity therebetween in which a heat transfer medium is disposed for the absorption of heat from potable material such as hot coffee in the container to reduce the temperature of the potable material to a temperature level suitable for drinking and to maintain this reduced temperature level for a prolonged period of time.
Inventors
- 👤 G Todd
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 21:06
CPC Classifications
A; A47; A47G; A47G19/00; A47G19/22; A47G19/2288
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
158 words
A drinking receptacle comprising, in combination, a rigid outer shell of insulating material having an annular upper edge, a rigid inner container of heat-conductive material having an annular upper edge, means for interconnecting said inner container and said outer shell upper edges together in intersecting sealing engagement to support said inner container within said outer shell in spaced relationship therewith for providing an inner cavity therebetween, said interconnecting means being arranged to form an annular lip for accommodating the mouth of a drinker to permit drinking of a potable liquid from said inner container and a heat transfer medium in said cavity in heat transfer relationship with said inner container for the absorption of heat from potable material introduced into said inner container, said heat transfer material being of a selected quantity to reduce the temperature of said potable material to a level whereby said outer shell maintains the temperature of said potable material at said selected level.
Claim 2
Dependent Claim
158 words
A drinking receptacle comprising, in combination, a rigid outer shell of insulating material having an annular upper edge, a rigid inner container of heat-conductive material having an annular upper edge, means for interconnecting said inner container and said outer shell upper edges together in intersecting sealing engagement to support said inner container within said outer shell in spaced relationship therewith for providing an inner cavity therebetween, said interconnecting means being arranged to form an annular lip for accommodating the mouth of a drinker to permit drinking of a potable liquid from said inner container and a heat transfer medium in said cavity in heat transfer relationship with said inner container for the absorption of heat from potable material introduced into said inner container, said heat transfer material being of a selected quantity to reduce the temperature of said potable material to a level whereby said outer shell maintains the temperature of said potable material at said selected level.
Claim 3
Dependent Claim
16 words
A drinking receptacle in accordance with claim 1 wherein said inner container is formed of metal.
Claim 4
Dependent Claim
15 words
A drinking receptacle in accordance with claim 1 wherein said heat transfer medium is metal.
Claim 5
Dependent Claim
16 words
A drinking recepTacle in accordance with claim 1 wherein said heat transfer medium is a liquid.
Claim 6
Dependent Claim
19 words
A drinking receptacle in accordance with claim 4 wherein said outer shell is formed of expanded plastic form material.
Claim 7
Dependent Claim
143 words
A drinking receptacle in accordance with claim 5 wherein said inner container is of cup-shaped configuration having a downwardly tapered side wall and a bottom wall and wherein said inner container annular upper edge defines an opening and wherein said outer shell is of substantially circular, cross-sectional shape having a side wall and a bottom wall and wherein said outer shell annular upper edge includes a ledge and wherein said interconnecting means includes a laterally extending, annular flange on said inner container upper edge positioned in overlying relationship with said ledge for supporting said inner container on said outer shell, an annular cap member of insulating material disposed on said outer shell upper edge in sealing relationship therewith and in overlying relationship with said flange and an annular gasket positioned between said cap member and said ledge in sealing relationship with said flange.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-10-22 | 1977-04-23 | 1977-10-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-22 | 1981-04-23 | 1981-10-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-22 | 1985-04-23 | 1985-10-23 | $7700.00 | Window Closed / Lapsed |