Patent US4630671A successfully refreshed from Google Patents.
US4630671A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lunch box
Assignee: Individual
•
Filing: 1985-02-12
•
Granted: 1986-12-23
•
Expires: 2005-02-12
Abstract
Abstract A lunch box has a body, and a vessel filled with a freezable liquid so that the latter cools the interior of the body. Also heating element can be provided for heating the interiod of the body part.
Inventors
- 👤 Victor Sherman
- 👤 Ilya Zborovsky
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 07:36
CPC Classifications
F; F25; F25D; F25D3/00; F25D3/02; F25D3/06; F25D3/08; A; A45; A45C; A45C11/00; A45C11/20; A47; A47J; A47J41/00; A47J41/0038; A47J41/005; F25D2303/00; F25D2303/08; F25D2303/082; F25D2303/0822; F25D2303/08221; F25D2303/083; F25D2303/0831; F25D2303/084; F25D2303/0844; F25D2331/00; F25D2331/80; F25D2331/804
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
189 words
A lunch box, comprising a hollow body bounding an inner substantially closed chamber for accommodating food; a hollow vessel removably attached to a part of said body so as to be located in said inner chamber when it is attached, and filled with a liquid which can be frozen and thereby cools said inner chamber; and an electrical heating element connected with said hollow body and connectable with an electric power source so as to be heated and to supply heat into said inner chamber for accommodating food contained in said inner chamber for accommodating food, and disconnectable from an electric power source so as to be deactuated for cooling said inner chamber by said liquid-filled vessel, said liquid-filled vessel being mounted in said inner chamber so as to be movable between a first position in which it faces toward said inner chamber for cooling the latter, and a second position in which it faces away of said inner chamber and therefore said heating element so that when said heating element heats said inner chamber said vessel is less subjected to the action of heat from said heating element.
Claim 2
Dependent Claim
189 words
A lunch box, comprising a hollow body bounding an inner substantially closed chamber for accommodating food; a hollow vessel removably attached to a part of said body so as to be located in said inner chamber when it is attached, and filled with a liquid which can be frozen and thereby cools said inner chamber; and an electrical heating element connected with said hollow body and connectable with an electric power source so as to be heated and to supply heat into said inner chamber for accommodating food contained in said inner chamber for accommodating food, and disconnectable from an electric power source so as to be deactuated for cooling said inner chamber by said liquid-filled vessel, said liquid-filled vessel being mounted in said inner chamber so as to be movable between a first position in which it faces toward said inner chamber for cooling the latter, and a second position in which it faces away of said inner chamber and therefore said heating element so that when said heating element heats said inner chamber said vessel is less subjected to the action of heat from said heating element.
References Cited (Backward Citations)
US2339580A
Cited
US2504911A
Cited
US2504132A
Cited
US2616269A
Cited
US2551651A
Cited
US2505405A
Cited
US2767960A
Cited
US3156105A
Cited
US3387650A
Cited
US3406532A
Cited
US3678703A
Cited
US4238934A
Cited
US4206343A
Cited
US4213310A
Cited
US4351165A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-12-22 | 1990-06-23 | 1990-12-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-12-22 | 1994-06-23 | 1994-12-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-12-22 | 1998-06-23 | 1998-12-23 | $7700.00 | Window Closed / Lapsed |