Patent US3892909A successfully refreshed from Google Patents.
US3892909A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Synthetic down
Assignee: QST Industries Inc
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Filing: 1973-05-10
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Granted: 1975-07-01
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Expires: 1993-05-10
Abstract
Abstract A fibrous body simulating natural bird down in its physical and functional aspects in that it is light in weight, has equivalent insulating characteristics, will not mildew or become soggy in the presence of water, has excellent laundering and dry cleaning characteristics, is lower in cost and is not dependent on the vagaries of nature which may result in periodic short supply.
Inventors
- 👤 Samuel E Miller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 13:42
CPC Classifications
A; A41; A41G; A41G11/00; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2922; Y10T428/2925
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
59 words
AN ASSEMBLAGE OF MAN-MADE BODIES EACH FUNCTIONING IN SIMULTATION OF BIRD DOWN AS FOUND IN NATURE, EACH SAID BODY COMPRISING A MYRIAD OF FIBERS FORMED INTO A ROUNDED CONFIGURATION WHICH IS CAPABLE OF BEING REPEATEDLY DEFORMED IN THE MANNER OF A SPRING BY APPLICATION OF A LOAD AND RECOVERY SUBSTANTIALLY T ITS ORIGINAL FORM UPON RELEASE OF THE LOAD.
Claim 2
Dependent Claim
59 words
AN ASSEMBLAGE OF MAN-MADE BODIES EACH FUNCTIONING IN SIMULTATION OF BIRD DOWN AS FOUND IN NATURE, EACH SAID BODY COMPRISING A MYRIAD OF FIBERS FORMED INTO A ROUNDED CONFIGURATION WHICH IS CAPABLE OF BEING REPEATEDLY DEFORMED IN THE MANNER OF A SPRING BY APPLICATION OF A LOAD AND RECOVERY SUBSTANTIALLY T ITS ORIGINAL FORM UPON RELEASE OF THE LOAD.
Claim 3
Dependent Claim
25 words
The combination in accordance with claim 1 further characterized in that some substantial proportion of the fibers are bonded together over some predetermined length thereof.
Claim 4
Dependent Claim
18 words
The combination in accordance with claim 2 wherein the bond is constituted by a hardenable liquid binder material.
Claim 5
Dependent Claim
14 words
The combination in accordance with claim 2 wherein the bond is a fused joint.
Claim 6
Dependent Claim
20 words
The combination in accordance with claim 1 in which the rounded configuration of the body is a figure of revolution.
Claim 7
Dependent Claim
15 words
The combination in accordance with claim 1 in which the rounded configuration is substantially spherical.
Claim 8
Dependent Claim
15 words
The combination in accordance with claim 1 in which the rounded configuration is substantially cylindrical.
Claim 9
Dependent Claim
34 words
The combination in accordance with claim 1 in which the body has a greater density of fibers at the exterior gradually diminishing to a least density as the center of the body is approached.
Claim 10
Dependent Claim
43 words
A man-made body functioning in simulation of bird down as found in nature, said body comprising a relatively open, rounded, fibrous mass of low average density comprising self-sustaining, non-woven fibers bonded together, said mass being characterized by rapid recovery following deformation under load.
Claim 11
Dependent Claim
43 words
A man-made body functioning in simulation of bird down as found in nature, said body comprising a relatively open, rounded, fibrous mass of low average density comprising self-sustaining, non-woven fibers bonded together, said mass being characterized by rapid recovery following deformation under load.
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) | 1978-06-30 | 1978-12-30 | 1979-07-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-06-30 | 1982-12-30 | 1983-07-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-06-30 | 1986-12-30 | 1987-07-01 | $7700.00 | Window Closed / Lapsed |