US3968530A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Body support means
Assignee: RADWAY Ltd A BRITISH Co
•
Filing: 1974-02-19
•
Granted: 1976-07-13
•
Expires: 1994-02-19
Abstract
Abstract Pads and mattresses having novel aggregate fillers are described. Aggregates containing a highly viscous gel-like fluid and a mixture of re-expanded polystyrene beads and silica beads are utilized to produce lightweight pads and mattresses which provide support with favorable pressure distribution, thereby minimizing high pressure contact areas between a user and the pad or mattress. The novel pads and mattresses particularly are useful for the minimization of pressure sores, which may result in situations wherein a user must remain on a pad or mattress for long periods of time.
Inventors
- 👤 Reginald Dyson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:43
CPC Classifications
A; A47; A47C; A47C27/00; A47C27/08; A47C27/085; A61; A61G; A61G7/00; A61G7/05; A61G7/057; A61G7/05738; Y; Y10; Y10S; Y10S5/00; Y10S5/909
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
82 words
Body support means comprising: a flexible, fluid-impermeable container; a viscous fluid within said container and a plurality of particles dispersed throughout said fluid, wherein said particles have a size distribution in the range from 0.01 to 15 millimeters in diameter and the volume ratio of said particles to said fluid is between about 70:30 and 95:5, said particles consist of a mixture of polystyrene beads and hollow silica beads and the viscosity of said fluid is between about 10,000 to 20,000 centipoises.
Claim 2
Dependent Claim
82 words
Body support means comprising: a flexible, fluid-impermeable container; a viscous fluid within said container and a plurality of particles dispersed throughout said fluid, wherein said particles have a size distribution in the range from 0.01 to 15 millimeters in diameter and the volume ratio of said particles to said fluid is between about 70:30 and 95:5, said particles consist of a mixture of polystyrene beads and hollow silica beads and the viscosity of said fluid is between about 10,000 to 20,000 centipoises.
Claim 3
Dependent Claim
20 words
As in claim 1, a body support means wherein said particles are of a lesser bulk density than said fluid.
Claim 4
Dependent Claim
20 words
As in claim 1, a body support means wherein said fluid is a mixture of water and sodium carboxymethyl cellulose.
Claim 5
Dependent Claim
35 words
As in claim 1, a body support means wherein said particles are comprised of a mixture of 3-15 millimeter diameter polystyrene beads, 0.5 - 1.0 millimeter polystyrene beads and 0.02 - 0.2 millimeter silica beads.
Claim 6
Dependent Claim
92 words
As in claim 1, a body support means wherein the viscous fluid is a gelatine and comprises a mixture of sodium carboxymethl cellulose and water, having a viscosity of about 12,000 centipoises at about 20°C., and said particles comprise a mixture of 5 parts by volume of 5 millimeter diameter pre-expanded polystyrene beads, 2 parts by volume of 0.5 - 1.0 millimeter diameter pre-expanded polystyrene beads and 3 parts by volume of 0.02 - 0.2 millimeter diameter hollow silica beads, the volume ratio of said particles and said fluid being about 80:20.
Claim 7
Dependent Claim
19 words
As in claim 1, a body support means wherein the viscous fluid further contains an antiseptic or anti-bacterial material.
Claim 8
Dependent Claim
14 words
As in claim 6, a body support means wherein the antibacterial material is 1,2-benzoisothiazolin-3-one.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-07-13 | 1980-01-12 | 1980-07-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-07-13 | 1984-01-12 | 1984-07-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-07-13 | 1988-01-12 | 1988-07-13 | $7700.00 | Window Closed / Lapsed |