Sound suppressing double-glazed pane
Abstract
Abstract D R A W I N G A SOUND SUPPRESSING DOUBLE-GLAZED PANE COMPRISES TWO GLAZING SHEETS WHICH ARE SPACED APART AND CONNECTED TO EACH OTHER AT THEIR EDGE BY A SEALING SECTION. AT LEAST ONE OF THE GLAZING SHEETS IS OF LAMINATED CONSTRUCTION AND COMPRISES A PLURALITY OF INDIVIDUAL GLASS SHEETS EACH JOINED TO THE ADJACENT INDIVIDUAL SHEET OR SHEETS BY AN INTERMEDIATE LAMINA OV VISCO-ELASTIC MATERIAL, THE TOTAL THICKNESS OR STRUCTURE OF THE VISCO-ELASTIC LAMINAE BEIG SUFFICIENT TO PROVIDING A HIGH DEGREE OF INTERNAL DAMPING IN THE LAMINATED GLAZING SHEET. THE LAMINATED GLAZING SHEET MAY COMPRISES TWO INDIVIDUAL SHEETS JOINED BY A SINGLE LAMINA OF POLYVINYL BUTYRAL OR THREE OR MORE INDIVIDUAL SHEETS JOINED TOGETHER BY TWO OR MORE LAMINAE OF POLYVINYL BUTYRAL FILMS OF EACH CASE THE TWO OR MORE POLYVINYL BUTYRAL FILMS OF THE USUAL THICKNESS OF 0.38 MM. ARE USED TO PROVIDE THE DESIRED THICKNESS OF POLYVINYL BUTYRAL IN THE LAMINATED GLAZING SHEET.
Inventors
- 👤 R Quenett
Bibliographic Details
Claims Analysis
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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) | 1976-12-31 | 1977-07-02 | 1978-01-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-31 | 1981-07-02 | 1982-01-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-31 | 1985-07-02 | 1986-01-01 | $7700.00 | Window Closed / Lapsed |