Mattresses
Abstract
Abstract A MATTRESS HAVING A BASE CONSISTING OF A LAYER OF SOFT RESILIENT EXPANDED FOAM MATERIAL OVER WHICH IS ARRANGED A FURTHER LAYER OF A SIMILAR MATERIAL, FROM WHICH LAYER PORTIONS HAVE BEEN REMOVED OR ARE ABSENT TO PRODUCE A MATTRESS IN WHICH PARTS OF THE SURFACE ARE AT AN ELEVATION ABOVE THE LEVEL OF THE REMAINDER, THE ELEVATED PARTS BEING ARRANGED SO THAT THE MATTRESS SUPPORTS THE BODY OF THE USER WHEN EITHER IN THE DORSAL OR LATERAL POSITIONS IN AN ANATOMICALLY ADVANTAGEOUS MANNER. ABSENT PORTIONS OF THE OVERLYING LAYER MAY BE FILLED WITH MATERIAL OF GREATER SOFTNESS AND RESILIENCE THAN THE REMAINDER OF THE LAYER. PORTIONS REMOVED FROM THE ABSENT PORTIONS OF THE OVERLYING LAYER MAY BE ATTACHED TTO THE ELEVATED PARTS TO INCREASE THE DIFFERENCE IN ELEVATION BETWEEN THE DIFFERENT PARTS OF THE MATTRESS.
Inventors
- 👤 Edmond Pierre Robert Viel
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) | 1974-12-13 | 1975-06-14 | 1975-12-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-12-13 | 1979-06-14 | 1979-12-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-12-13 | 1983-06-14 | 1983-12-14 | $7700.00 | Window Closed / Lapsed |