Patent US3691569A successfully refreshed from Google Patents.
US3691569A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cushion
Assignee: Individual
•
Filing: 1969-12-22
•
Granted: 1972-09-19
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Expires: 1989-12-22
Abstract
Abstract A cushion having a body comprising a layer composition formed of a mixture of rigid elastic fibrous materials and an elastomeric foam, said mixture being such that said rigid elastic fibrous material in part surround part of said foam, while part of said foam surrounds part of the fibers, thus said fibers and said foam occupying a defined space in mutually complementary relationship, said foam including a foam layer formed in integral connection with and extending outside the foam part surrounded by said rigid elastic fibrous materials.
Inventors
- 👤 Takeo Ikada
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 04:53
CPC Classifications
A; A47; A47C; A47C23/00; A47C27/00; A47C27/22; Y; Y10; Y10S; Y10S277/00; Y10S277/935; Y10S277/936; Y10S5/00; Y10S5/948; Y10S5/952
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
22 words
A cushion according to claim 1 wherein said rigid elastic fibrous materials are obtained from such materials as palm and coconut palm.
Claim 2
Dependent Claim
20 words
A cushion according to claim 1 wherein said elastomeric foam layer extending outside the foam-filled fiber layer is relatively thick.
Claim 3
Dependent Claim
49 words
A cushion according to claim 1 wherein the rigid elastic fibrous materials are coated with a bonding material around each surface of said fibers and at the fiber intersections, and wherein said fibers and said foam in said first layer are combined through the medium of the bonding material.
Claim 4
Dependent Claim
14 words
A cushion according to claim 4, wherein the bonding material comprises a foamed material.
Claim 5
Dependent Claim
21 words
A cushion as set forth in claim 1, in which said second layer has a greater thickness than said first layer.
Claim 6
Dependent Claim
28 words
A cushion as set forth in claim 1, in which said rigid elastic fibrous materials are palm fibers, curled together in an entangled mass within said first layer.
Claim 7
Dependent Claim
27 words
A cushion as set forth in claim 1, in which said second layer has a plurality of holes extending therethrough and into communication with said first layer.
Claim 8
Dependent Claim
19 words
A cushion as set forth in claim 1, further comprising a bonding agent binding said fibers at said intersections.
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) | 1975-09-19 | 1976-03-20 | 1976-09-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-09-19 | 1980-03-20 | 1980-09-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-09-19 | 1984-03-20 | 1984-09-19 | $7700.00 | Window Closed / Lapsed |