Folding sofa-bed with improved head section control linkage
Abstract
Abstract A FOLDING BED FRAME FOR SOFA-BEDS HAVING A PLURALITY OF FRAME SECTIONS, INCLUDING A FOOT SECTION KNEE SECTION, TRUNK SECTION AND HEAD SECTION PIVOTED IN END-TO-END RELATION AND BEING FOLDABLE BETWEEN AN EXTENDED BEDFORMING POSITION AND A RETRACTED SOFA SEAT-FORMING POSITION, INCLUDING SUPPORT AND GUIDING LINKAGE ASSEMBLIES FOR DETERMINING THE PATH OF MOVEMENT OF THE TRUNK SECTION, AND HEAD SECTION ACTUATING LINK MEANS CONNECTED BETWEEN ONE OF THE SUPPORT LINKAGE ASSEMBLIES AND THE HEAD SECTION OPERATIVE TO VARIABLY CONTROL THE SPEED AND AMPLITUDE OF SWINGING MOVEMENT OF THE HEAD SECTION WITHIN THE SPACE BEHIND THE SOFA BACK CENTER RAIL, IN A MANNER TO PERMIT UTILIZATION OF A HEAD SECTION HAVING GREATER LENGTH THAN IS POSSIBLE WITH CONVENTIONAL SOFA-BED STRUCTURES.
Inventors
- 👤 Melvin P Spitz
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) | 1974-06-21 | 1974-12-21 | 1975-06-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-21 | 1978-12-21 | 1979-06-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-21 | 1982-12-21 | 1983-06-22 | $7700.00 | Window Closed / Lapsed |