Patent US2742385A successfully refreshed from Google Patents.
US2742385A
Expired / Lapsed
US
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Insulated structures
Assignee: General Electric Co
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Filing: 1952-06-14
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Granted: 1956-04-17
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Expires: 1972-06-14
Abstract
No abstract record available.
Inventors
- 👤 Harold P Bovenkerk
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 17:27
CPC Classifications
C; C04; C04B; C04B30/00; C04B30/02; E; E04; E04B; E04B1/00; E04B1/62; E04B1/74; E04B1/76; E04B1/78; E04B1/80; E04B1/803; E04C; E04C2/00; E04C2/02; E04C2/26; E04C2/284; E04C2/292; F; F16; F16L; F16L59/00; F16L59/04; F25; F25D; F25D23/00; F25D23/06; F25D23/065; F25D2201/00; F25D2201/10; F25D2201/12; F25D2201/124; F25D2201/14; Y; Y02; Y02A; Y02A30/00; Y02A30/24; Y02A30/242; Y02B; Y02B80/00; Y02B80/10; Y10; Y10T; Y10T428/00; Y10T428/23; Y10T428/237; Y10T428/24; Y10T428/24942; Y10T428/2495; Y10T428/249921; Y10T428/249953; Y10T428/249962; Y10T428/29; Y10T428/2913; Y10T428/298
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
105 words
AN INSULATING STRUCTURE OF A VACUUM TYPE COMPRISING A PAIR OF SPACED WALLS HAVING ABUTTING EDGES, SAID EDGES BEING WELDED TO PROVIDE A VACUUM-TIGHT SEALED ENVELOPE, FILLER MATERIAL IN THE SPACE BETWEEN SAID WALLS FOR SUPPORTING SAID WALLS AGAINST EXTERNAL ATMOSPHERIC PRESSURE, SAID FILLER MATERIAL CONSISTING OF A BATT OF RELATIVELY COARSE GLASS FIBER MATERIAL FORMING THE MAJOR PORTION THEREOF, AND A THIN STRIP OF RELATIVELY FINE GLASS FIBER MATERIAL IN WHICH THE GLASS FIBERS HAVE A DIAMETER NOT EXCEEDING .0002 INCH ENCLOSING AT LEAST THE EDGES OF SAID BATT FOR MINIMIXING ENTRY OF GLASS SHOT AND FIBERS FROM SAID BATT INTO THE WELD AREA.
Claim 2
Dependent Claim
105 words
AN INSULATING STRUCTURE OF A VACUUM TYPE COMPRISING A PAIR OF SPACED WALLS HAVING ABUTTING EDGES, SAID EDGES BEING WELDED TO PROVIDE A VACUUM-TIGHT SEALED ENVELOPE, FILLER MATERIAL IN THE SPACE BETWEEN SAID WALLS FOR SUPPORTING SAID WALLS AGAINST EXTERNAL ATMOSPHERIC PRESSURE, SAID FILLER MATERIAL CONSISTING OF A BATT OF RELATIVELY COARSE GLASS FIBER MATERIAL FORMING THE MAJOR PORTION THEREOF, AND A THIN STRIP OF RELATIVELY FINE GLASS FIBER MATERIAL IN WHICH THE GLASS FIBERS HAVE A DIAMETER NOT EXCEEDING .0002 INCH ENCLOSING AT LEAST THE EDGES OF SAID BATT FOR MINIMIXING ENTRY OF GLASS SHOT AND FIBERS FROM SAID BATT INTO THE WELD AREA.
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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) | 1959-04-17 | 1959-10-17 | 1960-04-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-04-17 | 1963-10-17 | 1964-04-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-04-17 | 1967-10-17 | 1968-04-17 | $7700.00 | Window Closed / Lapsed |