US2742385A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Insulated structures
Assignee: General Electric Co
•
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 13:29
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.
References Cited (Backward Citations)
US1554395A
Cited
US903878A
Cited
US1898977A
Cited
US1992509A
Cited
US1927879A
Cited
US1971064A
Cited
US2113068A
Cited
US2264543A
Cited
US2495636A
Cited
US2552124A
Cited
US2540563A
Cited
US2504421A
Cited
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 |