Patent US4665309A successfully refreshed from Google Patents.
US4665309A
Expired / Lapsed
US
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Self heating gasket for hermetically sealing a lid to a box
Assignee: Delaware Capital Formation Inc
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Filing: 1984-10-05
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Granted: 1987-05-12
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Expires: 2004-10-05
Abstract
Abstract The lid is hermetically sealed to an associated box by a gasket in the form of a sealant covered temperature autoregulating heater.
Inventors
- 👤 Rodney L. Derbyshire
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 18:04
CPC Classifications
B; B29; B29C; B29C65/00; B29C65/02; B29C65/34; B29C65/3404; B29C65/3456; B23; B23K; B23K1/00; B23K1/0004; B29C66/00; B29C66/01; B29C66/05; B29C66/10; B29C66/11; B29C66/112; B29C66/114; B29C66/20; B29C66/24; B29C66/242; B29C66/2424; B29C66/24243; B29C66/24244; B29C66/50; B29C66/51; B29C66/53; B29C66/534; B29C66/5346; B29C66/53461; B29C66/90; B29C66/91; B29C66/914; B29C66/9141; B29C66/91411; B29C66/9161; B29C66/91651; B29C66/91655; B29C65/3468; B29C65/3472; B29C65/3476; B29C65/348; B29C66/919; B29L; B29L2031/00; B29L2031/30; B29L2031/3055; B29L2031/3061
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
57 words
A gasket for hermetically sealing a lid to a box without evolving deleterious gases and permitting subsequent removal and reapplication of the lid, said gasket comprising a temperature autoregulating heater having a configuration of the entire contacting surfaces of the lid and the box, and means adapted to connect said heater to a source of alternating current.
Claim 2
Dependent Claim
57 words
A gasket for hermetically sealing a lid to a box without evolving deleterious gases and permitting subsequent removal and reapplication of the lid, said gasket comprising a temperature autoregulating heater having a configuration of the entire contacting surfaces of the lid and the box, and means adapted to connect said heater to a source of alternating current.
Claim 3
Dependent Claim
33 words
The gasket according to claim 1 further comprising a layer of heat activated sealant disposed on the areas of said gasket that are intended to contact areas of the lid and the box.
Claim 4
Dependent Claim
37 words
The gasket according to claim 1 or claim 2 further comprising a terminal for connection to a source of current at one end only of said gasket, said terminal extending outwardly from the perimeter of said box.
Claim 5
Dependent Claim
33 words
The gasket according to claim 3 wherein said gasket has its two ends abutting adjacent said terminal and means for electrically insulating said ends from one another in the region of said abutment.
Claim 6
Dependent Claim
65 words
A sealed container comprising a container having a plurality of walls with end surfaces, having inner and outer edges, a lid covering said end surfaces and the interior space defined by said walls, and a gasket lying between said end surfaces and said lid and having an outer periphery substantially defined by the outer edges of said end walls, said gasket being an autoregulating heater.
Claim 7
Dependent Claim
65 words
A sealed container comprising a container having a plurality of walls with end surfaces, having inner and outer edges, a lid covering said end surfaces and the interior space defined by said walls, and a gasket lying between said end surfaces and said lid and having an outer periphery substantially defined by the outer edges of said end walls, said gasket being an autoregulating heater.
Claim 8
Dependent Claim
30 words
A sealed container according to claim 5 further including a sealant disposed between and in contact with said end surfaces and said gasket and between said gasket and said lid.
Claim 9
Dependent Claim
30 words
A sealed container according to claim 5 wherein said gasket is a narrow strip having the width of said end surfaces and the length and configuration of the end surfaces.
References Cited (Backward Citations)
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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) | 1990-05-11 | 1990-11-10 | 1991-05-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-05-11 | 1994-11-10 | 1995-05-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-05-11 | 1998-11-10 | 1999-05-12 | $7700.00 | Window Closed / Lapsed |