Patent US2470615A successfully refreshed from Google Patents.
US3774250A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mattress including laminated foam fabrics and their production
Assignee: Chemstitch Inc
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Filing: 1972-09-11
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Granted: 1973-11-27
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Expires: 1992-09-11
Abstract
Abstract A mattress comprising a core and a casing, at least the upper surface of said casing comprising a laminate of a fabric and a foam at least about 0.15 inch thick, said fabric being outside and being bonded over substantially its entire underface to said foam, said laminate having a three-dimensional contoured and patterned surface. The fabric foam laminate is produced by printing adhesive from an engraved roll onto a foam sheet during compression of the sheet and contacting the sheet with a fabric while the adhesive is tacky. The engraving of the roll is deep along some lines and shallow everywhere else for overall bonding. Immediately thereafter the laminate is cooled to quench and set the tacky adhesive so the laminate has relatively deep depressions corresponding to the deep engraving of the roll.
Inventors
- 👤 P Miller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 13:09
CPC Classifications
A; A47; A47C; A47C27/00; A47C27/14; B; B32; B32B; B32B5/00; B32B5/22; B32B5/24; B32B5/245; B32B27/00; B32B27/06; B32B27/08; B32B27/32; B32B27/34; B32B27/36; B32B27/40; B32B5/02; B32B5/022; B32B5/024; B32B5/026; B32B5/18; B32B7/00; B32B7/04; B32B7/12; B32B9/00; B32B9/02; B32B9/04; B32B9/046; B32B2262/00; B32B2262/02; B32B2262/0246; B32B2262/0253; B32B2262/0276; B32B2262/08; B32B2266/00; B32B2266/02; B32B2266/0207; B32B2266/0214; B32B2266/0278; B32B2305/00; B32B2305/02; B32B2305/022; B32B2305/10; B32B2305/18; B32B2305/186; Y; Y10; Y10S; Y10S297/00; Y10S297/01; Y10T; Y10T156/00; Y10T156/10; Y10T156/1002; Y10T156/1007; Y10T156/1023
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
30 words
A mattress according to claim 1 wherein said laminate is about 0.25 to 1 inch thick and has depressions in its outside face of at least about 0.1 inch. Pg,14
Claim 2
Dependent Claim
58 words
The process of claim 1, wherein said roll in addition to said engraving is provided over substantially its entire surface with fine depressions which receive said adhesive and transfer it to said foam sheet so as to effect adhesion o said fabric to said foam sheet over substantially their entire contacting surfaces in addition to the contoured pattern.
Claim 3
Dependent Claim
54 words
The process of claim 3, including the further step of passing said laminate over a heated roll with the uppermost portions of the fabric contacting said roll while the lowermost portions are out of contact with said roll, whereby any surface irregularities in said fabric are ironed out without loss of the contoured pattern.
Claim 4
Dependent Claim
29 words
The process of claim 3, wherein the foam sheet has a minimum thickness of about 0.15 inch and a density of about 0.5 to 5 pounds per cubic foot.
Claim 5
Dependent Claim
28 words
A mattress according to claim 1 wherein both the upper and lower surfaces of said casing comprise said laminate, the mattress thus having the same appearance when turned.
Claim 6
Dependent Claim
180 words
The process for the production of a mattress comprising a core and a contoured patterned casing, comprising supplying to an engraved rotating roll an adhesive which sets at least partially upon cooling, contacting said roll with a foam sheet so as resiliently to depress said sheet and to transfer said adhesive to said foam sheet, contacting said foam sheet with a fabric while said adhesive is tacky so as to unite said foam sheet with said fabric into a laminate, immediately thereafter passing the laminate about a cooled body so as to quench and set said adhesive, whereby the laminate at lines corresponding to the engraving of said roll is of substantially the same minimum thickness which it assumes during the resilient depression, cutting said laminate into the approximate shape of a mattress, sewing said cut laminate into a mattress-shaped casing with the fabric of said laminate outermost, and filling said casing with a mattress core, the resulting mattress having a contoured patterned upper face, the foam of the casing directly contacting the core and friction therebetween preventing relative shifting.
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) | 1976-11-26 | 1977-05-28 | 1977-11-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-11-26 | 1981-05-28 | 1981-11-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-11-26 | 1985-05-28 | 1985-11-27 | $7700.00 | Window Closed / Lapsed |