Portable sound attenuating partition wall panel
Abstract
Abstract A PORTABLE ROOM DIVIDER PANEL OF HIGH SOUND ATTENUATING CHARACTERISTICS, THE PANEL HAVING A WOOD FRAME. A SHEET OF LOW PRESSURE LAMINATE HARDBOARD BONDED TO EACH FACE OF THE FRAME TO FORM A CHAMBER, A DECORATIVE SKIN OF HIGH PRESSURE LAMINATE BONDED TO EACH SHEET OF HARDBOARD, AND A CORE IN THE CHAMBER CONSISTING OF THREE LAMINAR MINERAL FIBER BOARDS OF WHICH A ONE INCH THICK SECTION WEIGHT ABOUT 0.9 POUND PER SQUARE FOOT, THE BOARDS BEING SECURED TO ONE ANOTHER BY WIDELY SPACED SPOTS OF ADHESIVE WHICH OCCUPY A MINOR FRACTION OF THE SURFACE AREA OF THE CORE. THE CORE FILLS THE CHAMBER AND AFFORDS STRUCTURAL SUPPORT FOR THE HARDBOARD SHEETS WITHOUT BEING COMPRESSED BY THE SHEETS. A FOUR BY EIGHT FOOT PANEL WHICH IS ONE AND THREE-QUARTERS INCH THICK AND WEIGHS 125 POUNDS HAS AN OVERALL SOUND TRANSMISSION CLASS OF ABOUR 43 WHEN TESTED IN ACCORDANCE WITH ASTM SPECIFICATION E90-66T.
Inventors
- 👤 Edward R Witkosky
- 👤 Henry F Golder
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) | 1974-03-29 | 1974-09-28 | 1975-03-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-03-29 | 1978-09-28 | 1979-03-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-03-29 | 1982-09-28 | 1983-03-30 | $7700.00 | Window Closed / Lapsed |