Door structure with a closable breather tube
Abstract
Abstract A DOOR HAS TWO CURVED GLASS PLATES IN SPACED RELATION TO EACH OTHER. RESILIENT SPONGE STRIPS ARE DISPOSED BETWEEN THE GLASS PLATES ADJACENT THE BOTTOM AND TOP EDGES OF THE DOOR. ALONG THE SIDES OF THE DOOR, BETWEEN THE GLASS PLATES, ARE TUBES HAVING SLITS WHICH COMMUNICATE WITH THE SPACE BETWEEN THE GLASS PLATES. SEALING MEANS ARE INCLUDED ABOUT THE ENTIRE PERIPHERY OF THE DOOR, AND THE TUBES CONTAIN MOISTURE-ABSORBENT MATERIAL SUCH AS SILICA GEL, TO ABSORB MOISTURE WHICH MAY BE SEALED IN BETWEEN THE GLASS PLATES. A BREATHER TUBE IS BUILT INTO THE DOOR AND ALLOWS ATMOSPHERIC PRESSURE INTO THE SPACE BETWEEN THE GLASS PLATES. SUCH BREATHER TUBE ALLOWS FOR DIFFERENCES IN ATMOSPHERIC PRESSURE WHEN SHIPPING THE DOOR, AND IS SEALED OFF WHEN THE DOOR IS IN A SUBSTANTIALLY STABILIZED CONDITION OF ATMOSPHERIC PRESSURE.
Inventors
- 👤 Louis F Barroero
Bibliographic Details
Claims Analysis
Total Claims: 0References 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) | 1974-03-15 | 1974-09-14 | 1975-03-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-03-15 | 1978-09-14 | 1979-03-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-03-15 | 1982-09-14 | 1983-03-16 | $7700.00 | Window Closed / Lapsed |