US3961720A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vacuum insulated container
Assignee: Aladdin Industries LLC
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Filing: 1974-10-07
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Granted: 1976-06-08
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Expires: 1994-10-07
Abstract
Abstract A vacuum insulated container is produced by sealing the ends of a pair of hollow concentric tubular members. Air is then evacuated from the enclosed space between the members to obtain a vacuum insulating sleeve. An insulated base seals one end of the sleeve while a liner is provided in the interior of the sleeve for receiving food or a beverage. The other end of the sleeve may have various configurations to provide either a wide or narrow mouthed opening.
Inventors
- 👤 Gordon W. Potter, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 04:24
CPC Classifications
A; A47; A47J; A47J41/00; A47J41/02; A47J41/022; A47J41/0005
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
99 words
A thermally insulated container comprising: a. a hollow double walled sleeve formed by a pair of concentric tubular members sealed together at their ends to form an airtight chamber therebetween and from which air is substantially evacuated; b. a base of thermal insulating material sealingly engaging one end of said sleeve; c. a liner secured in the hollow central portion of said sleeve and having an opening at the other end of said sleeve for receiving material to be thermally insulated; and d. means for sealing and thermally insulating said opening and the immediately adjacent portions of said liner.
Claim 2
Dependent Claim
99 words
A thermally insulated container comprising: a. a hollow double walled sleeve formed by a pair of concentric tubular members sealed together at their ends to form an airtight chamber therebetween and from which air is substantially evacuated; b. a base of thermal insulating material sealingly engaging one end of said sleeve; c. a liner secured in the hollow central portion of said sleeve and having an opening at the other end of said sleeve for receiving material to be thermally insulated; and d. means for sealing and thermally insulating said opening and the immediately adjacent portions of said liner.
Claim 3
Dependent Claim
17 words
The device of claim 1 wherein said sleeve is formed from a pair of concentric hollow cylinders.
Claim 4
Dependent Claim
19 words
The device of claim 1 wherein said sleeve is formed of metal and said ends are sealed by welding.
Claim 5
Dependent Claim
24 words
The device of claim 1 wherein the surface of said base extending into said sleeve is a curvilinear surface for supporting said liner thereon.
Claim 6
Dependent Claim
22 words
The device of claim 1 wherein said liner is formed of non-toxic material to permit food and beverages to be contained therein.
Claim 7
Dependent Claim
25 words
The device of claim 1 wherein said liner has insulation provided on its outer surface to reduce heat convection between the liner and the sleeve.
Claim 8
Dependent Claim
27 words
The device of claim 1 wherein the interior walls of said sleeve have a low thermal emissivity coating thereon to reduce thermal radiation across the airtight chamber.
Claim 9
Dependent Claim
29 words
The device of claim 1 wherein said liner shape conforms to the sleeve and said opening is of substantially the same size as the inside diameter of the sleeve.
Claim 10
Dependent Claim
21 words
The device according to claim 8 wherein said means for sealing includes a thermally insulated stopper releasably secured to said opening.
Claim 11
Dependent Claim
66 words
The device according to claim 9 wherein said stopper is a compound stopper including: a. a large stopper having a smal opening therein for reducing the effective size of the liner opening; and b. a small stopper releasably secured to said large stopper for sealing said small opening whereby removal of said stoppers permits use of said container in either a wide or narrow mouthed configuration.
Claim 12
Dependent Claim
26 words
The device of claim 1 wherein said liner is tapered at the top so the opening is substantially smaller than the inside diameter of the sleeve.
Claim 13
Dependent Claim
39 words
The device according to claim 9 wherein said means for sealing includes: a. a thermally insulated stopper releasably secured to said opening; and b. a thermally insulated collar secured about said opening at said other end of said sleeve.
Claim 14
Dependent Claim
21 words
The device according to claim 1 wherein said means for sealing includes a thermally insulated stopper releasably secured to said opening.
Claim 15
Dependent Claim
66 words
A thermally insulated container comprising: a. a hollow double walled sleeve formed by a pair of concentric hollow cylinders sealed together at their ends to form an airtight chamber therebetween and from which air is substantially evacuated; b. a base of thermal insulating material sealingly engaging one end of said sleeve; and c. means for removably sealing and thermally insulating the other end of said sleeve.
Claim 16
Dependent Claim
66 words
A thermally insulated container comprising: a. a hollow double walled sleeve formed by a pair of concentric hollow cylinders sealed together at their ends to form an airtight chamber therebetween and from which air is substantially evacuated; b. a base of thermal insulating material sealingly engaging one end of said sleeve; and c. means for removably sealing and thermally insulating the other end of said sleeve.
Claim 17
Dependent Claim
27 words
The device of claim 14 wherein the interior walls of said sleeve have a low thermal emissivity coating thereon to reduce thermal radiation across the airtight chamber.
Claim 18
Dependent Claim
41 words
The device of claim 14 wherein said means for removably sealing includes: a. a thermally insulated collar having a central opening therein secured about said other end of said sleeve; and b. a thermally insulated stopper releasably secured to said opening.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-06-08 | 1979-12-08 | 1980-06-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-06-08 | 1983-12-08 | 1984-06-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-06-08 | 1987-12-08 | 1988-06-08 | $7700.00 | Window Closed / Lapsed |