Patent US4234250A successfully refreshed from Google Patents.
US4021871A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process and structure for pillow making
Assignee: Pillowtex Corp
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Filing: 1975-10-20
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Granted: 1977-05-10
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Expires: 1995-10-20
Abstract
Abstract A pillow cushion construction of foam material which has improved resilience and shape retention, and which facilitates the manufacture of pillow cushions. An upper and lower portion of the cushion provide a cavity which cooperates with a fibrous filler towards achievement of these results.
Inventors
- 👤 Harold Wortman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:46
CPC Classifications
B; B68; B68G; B68G11/00; B68G11/04; A; A47; A47C; A47C27/00; A47G; A47G9/00; A47G9/10; Y; Y10; Y10T; Y10T428/00; Y10T428/23; Y10T428/237
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
153 words
A pillow cushion construction comprising: a plurality of resilient foam panels forming upper and lower portions of said cushion; raised projections on one side of said upper and lower portions respectively; said projections on said upper portion directly opposing said projections on said lower portion when said portions of said cushion are attached together at their edges by cushion attachment means; and a fibrous textile filler positioned between said opposing projections on said upper portion and said projections on said lower portion, when said edges of said cushions are joined by said cushion attachment means, said fibrous filler also occupying a position separating adjacent protrusions from one another on each of said upper and lower portions respectively, while yielding to provide an amount of interlace between said protrusions on said upper and lower portions, where said fibrous filler occupies an internal cushion cavity formed by said upper and lower portions of said cushion.
Claim 2
Dependent Claim
153 words
A pillow cushion construction comprising: a plurality of resilient foam panels forming upper and lower portions of said cushion; raised projections on one side of said upper and lower portions respectively; said projections on said upper portion directly opposing said projections on said lower portion when said portions of said cushion are attached together at their edges by cushion attachment means; and a fibrous textile filler positioned between said opposing projections on said upper portion and said projections on said lower portion, when said edges of said cushions are joined by said cushion attachment means, said fibrous filler also occupying a position separating adjacent protrusions from one another on each of said upper and lower portions respectively, while yielding to provide an amount of interlace between said protrusions on said upper and lower portions, where said fibrous filler occupies an internal cushion cavity formed by said upper and lower portions of said cushion.
Claim 3
Dependent Claim
40 words
The invention according to claim 1 in which said projections on said upper and lower portions of said cushion, respectively, are larger and taller towards the center of said cushion and smaller and shorter towards said edges of said cushion.
Claim 4
Dependent Claim
77 words
The invention of claim 1 wherein said edges of said upper and lower portions of said foam cushions angularly slope outwardly from said side of said upper and lower portions having said projections, towards the side of said portion without said projections; said sloping edges of said upper portion in alignment with said sloping edges of said lower portion so as to be juxtaposed to each other when pinched together and secured by said cushion attachment means.
Claim 5
Dependent Claim
73 words
The invention of claim 1 wherein said edges of said upper and lower portions comprise substantially V-shaped appendages; said appendages attached to said upper and lower portions respectively by a foam web enabling ease in manipulation of said edge direction; said edge of said upper portion in alignment with said edge of said lower portion so as to be juxtaposed to each other when pinched together and secured by said cushion attachment means.
Claim 6
Dependent Claim
27 words
The invention according to claim 1 where in said cushion attachment means comprises a bond between said upper and lower edges by application of heat and pressure.
Claim 7
Dependent Claim
23 words
The invention according to claim 1 wherein said cushion attachment means comprises a bond between said upper and lower edges of cementing adhesive.
Claim 8
Dependent Claim
94 words
The invention according to claim 1 wherein said fibrous fillers comprise conventional vegetable and synthetic materials having substantially low density and substantially high resilience; said filler being positioned into said internal cavity of said cushion so as to form a substantially soft barrier between said upper and lower portions of said cushion whereby said filler forms a boundary between said projections of said upper portion and said projections of said lower portion; said filler filling a portion of recesses between said projections from said lower portion and said upper portion of said cushion respectively.
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) | 1980-05-09 | 1980-11-08 | 1981-05-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-05-09 | 1984-11-08 | 1985-05-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-05-09 | 1988-11-08 | 1989-05-10 | $7700.00 | Window Closed / Lapsed |