US4122568A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mattress of the hard surface type
Assignee: Individual
•
Filing: 1977-06-10
•
Granted: 1978-10-31
•
Expires: 1997-06-10
Abstract
Abstract An orthopedic mattress is made of a plurality of rigid supporting members each including a vertical post with a rigid flat platform at its upper and lower ends. The platforms are preferably square in shape and may include connecting means on each of the side edges thereof. The supporting members are arranged in longitudinal and transverse rows and the entire assembly is covered with a soft material such as foam rubber.
Inventors
- 👤 Jose R. R. Bastos
- 👤 Eduardo R. Bastos
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 09:20
CPC Classifications
A; A47; A47C; A47C27/00; A47C27/04
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
135 words
A mattress of the hard-surface type comprising a plurality of vertical rigid supporting members, each supporting member including a vertically disposed post and a rigid, flat platform at the upper and lower ends of said posts, said supporting members arranged side-by-side in a plurality of longitudinal and in transverse rows, the edges of the upper and lower platforms disposed adjacent related edges of other platforms in said longitudinal and transverse rows and spaced from said adjacent edges to provide flexability for said mattress, said upper and lower platforms forming the upper and lower planar surfaces of said mattress, including connecting means comprises at least one pin an at least one opening on each edge of said upper and lower platforms whereby the pins of one platform engages in a related opening of an adjacent platform.
Claim 2
Dependent Claim
135 words
A mattress of the hard-surface type comprising a plurality of vertical rigid supporting members, each supporting member including a vertically disposed post and a rigid, flat platform at the upper and lower ends of said posts, said supporting members arranged side-by-side in a plurality of longitudinal and in transverse rows, the edges of the upper and lower platforms disposed adjacent related edges of other platforms in said longitudinal and transverse rows and spaced from said adjacent edges to provide flexability for said mattress, said upper and lower platforms forming the upper and lower planar surfaces of said mattress, including connecting means comprises at least one pin an at least one opening on each edge of said upper and lower platforms whereby the pins of one platform engages in a related opening of an adjacent platform.
Claim 3
Dependent Claim
36 words
A mattress according to claim 1, wherein said upper and lower planar surfaces are covered by at least one layer of soft material secured to said platforms to encase and draw together said rigid supporting members.
Claim 4
Dependent Claim
17 words
A mattress according to claim 1, wherein said connecting means is on said upper and lower platforms.
Claim 5
Dependent Claim
28 words
A mattress according to claim 1, wherein each of said pins is provided with a compressible head of greater diameter than the diameter of each of said openings.
Claim 6
Dependent Claim
15 words
A mattress according to claim 4, wherein said platforms are integral with said vertical posts.
References Cited (Backward Citations)
FR914505A
Cited
US3276048A
Cited
US3467972A
Cited
US3546724A
Cited
US3551924A
Cited
GB1321826A
Cited
US3720966A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-10-30 | 1982-05-01 | 1982-10-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-10-30 | 1986-05-01 | 1986-10-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-10-30 | 1990-05-01 | 1990-10-31 | $7700.00 | Window Closed / Lapsed |