US4121005A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Conformable foam
Assignee: 3M Co
•
Filing: 1978-02-13
•
Granted: 1978-10-17
•
Expires: 1998-02-13
Abstract
Abstract Foam material useful in preventing decubitus ulcers, said material being a relatively thick, perforated and cut foam sheet which is conformable.
Inventors
- 👤 Charles William Roberts
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 08:10
CPC Classifications
A; A61; A61G; A61G7/00; A61G7/05; A61G7/057; A61G7/05707; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24273; Y10T428/24355; Y10T428/24471; Y10T428/249921; Y10T428/249953; Y10T428/249982; Y10T428/28
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
120 words
A foam material which is conformable to body members and comprises a relatively thick foam sheet having a top surface and a skin contacting surface, said foam sheet containing therethrough a substantial number of perforations, said foam between a substantial number of the perforations being cut from the top surface through a portion of the thickness of the foam, said cuts resulting in foam segments which are hingedly connected to adjacent segments adjacent the skin contacting surface of said foam sheet, said foam containing a sufficient number of perforations to permit the foam to be relatively extensible in the longitudinal dimension and said foam having a stiffness in its latitudinal dimension of from about 0.4 gm/cm to about 2.0 gm/cm.
Claim 2
Dependent Claim
120 words
A foam material which is conformable to body members and comprises a relatively thick foam sheet having a top surface and a skin contacting surface, said foam sheet containing therethrough a substantial number of perforations, said foam between a substantial number of the perforations being cut from the top surface through a portion of the thickness of the foam, said cuts resulting in foam segments which are hingedly connected to adjacent segments adjacent the skin contacting surface of said foam sheet, said foam containing a sufficient number of perforations to permit the foam to be relatively extensible in the longitudinal dimension and said foam having a stiffness in its latitudinal dimension of from about 0.4 gm/cm to about 2.0 gm/cm.
Claim 3
Dependent Claim
13 words
The foam material of claim 1 wherein said foam is open cell polyurethane.
Claim 4
Dependent Claim
25 words
The foam material of claim 1 wherein said perforations are slits and wherein said cuts intersect said slits and form a network of individual segments.
Claim 5
Dependent Claim
26 words
The foam material of claim 1 wherein the skin contacting surface of said form sheet is coated on at least a portion thereof with an adhesive.
Claim 6
Dependent Claim
103 words
A foam material which is conformable to body members and comprises a relatively thick foam sheet having a top surface and a skin contacting surface, said foam sheet containing therethrough a substantial number of perforations, said foam between a substantial number of the perforations being cut from the top surface through a portion of the thickness of the foam, said cuts resulting in foam segments which are hingedly connected to adjacent segments adjacent the skin contacting surface of said foam sheet, said foam material having a stiffness of from about 0.4 gm/cm to about 2.0 gm/cm in both its longitudinal and latitudinal dimensions.
Claim 7
Dependent Claim
103 words
A foam material which is conformable to body members and comprises a relatively thick foam sheet having a top surface and a skin contacting surface, said foam sheet containing therethrough a substantial number of perforations, said foam between a substantial number of the perforations being cut from the top surface through a portion of the thickness of the foam, said cuts resulting in foam segments which are hingedly connected to adjacent segments adjacent the skin contacting surface of said foam sheet, said foam material having a stiffness of from about 0.4 gm/cm to about 2.0 gm/cm in both its longitudinal and latitudinal dimensions.
Claim 8
Dependent Claim
26 words
The foam material of claim 5 wherein the skin contacting surface of said foam sheet is coated on at least a portion thereof with an adhesive.
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) | 1981-10-16 | 1982-04-17 | 1982-10-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-10-16 | 1986-04-17 | 1986-10-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-10-16 | 1990-04-17 | 1990-10-17 | $7700.00 | Window Closed / Lapsed |