Patent US3661669A successfully refreshed from Google Patents.
US3661669A
Expired / Lapsed
US
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Method of joining pieces of material
Assignee: Dow Chemical Co
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Filing: 1970-01-19
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Granted: 1972-05-09
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Expires: 1990-01-19
Abstract
Abstract Pieces of material having a layer of foam adhered to one surface, for example, a foam-backed carpet, are joined by compressing permanently a narrow strip adjacent an edge of each piece of the material to be joined, butt-contacting those edges, joining together the two abutting edges to form a recessed portion and concurrently or subsequently inserting into the recessed portion and adhering thereto a strip of resilient foam having about the same thickness as the recessed portion so that the overall thickness of the foam where the pieces are joined is substantially the same as of other portions of the foam.
Inventors
- 👤 James N Cairns
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 11:15
CPC Classifications
A; A47; A47G; A47G27/00; A47G27/04; A47G27/0437; A47G27/0443; B; B32; B32B; B32B5/00; B32B5/18; B29; B29C; B29C65/00; B29C65/48; B29C65/4805; B29C65/483; B29C65/50; B29C65/5007; B29C65/5021; B29C65/5042; B29C65/505; B29C66/00; B29C66/01; B29C66/05; B29C66/10; B29C66/11; B29C66/114; B29C66/1142; B29C66/40; B29C66/41; B29C66/43; B29C66/70; B29C66/72; B29C66/723; B29C66/727; B32B29/00; B32B29/002; B32B29/007; B32B3/00; B32B3/02; B32B3/06; B32B37/00; B32B37/10; B32B5/22; B32B5/24; B32B5/245; B32B7/00; B32B7/04; B32B7/12; B29C65/4835; B29C66/71; B29C66/7232; B29C66/72321; B29C66/72327; B29C66/72328; B29L; B29L2031/00; B29L2031/732; B29L2031/7322; B32B2309/00; B32B2309/02; B32B2309/022; B32B2309/025; B32B2309/12; B32B2309/125; B32B2471/00; B32B2471/02; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1089; Y10T156/109
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
33 words
The method of claim 1 in which the strip of inserted foam is bonded to a piece of tape which in turn is bonded to at least a portion of the recessed portion.
Claim 2
Dependent Claim
52 words
The method of claim 1 in which in compressing the narrow strip a pressure of from about 0.3 kilogram to about 11 kilograms per square centimeter is applied at a temperature of from about 130* C. to about 150* C. for a time of from about 0.05 second to about 10 minutes.
Claim 3
Dependent Claim
25 words
The method of claim 1 in which the narrow strip on each piece has a width of from about one-quarter inch to about 3 inches.
Claim 4
Dependent Claim
23 words
The method of claim 1 in which the narrow strip has a width of from about one-half inch to about 1 1/2 inches.
Claim 5
Dependent Claim
27 words
The method of claim 1 in which the density of the layer of resilient polymeric foam is from about 8.5 to about 17 pounds per cubic foot.
Claim 6
Dependent Claim
20 words
The method of claim 1 in which a solvent is applied to the narrow strip adjacent the edges before compression.
Claim 7
Dependent Claim
11 words
The method of claim 7 in which the solvent is water.
Claim 8
Dependent Claim
27 words
The method of claim 1 in which the polymeric foam comprises a copolymer of an alkenyl aromatic compound, a conjugated diene and an ethylenically unsaturated carboxylic acid.
Claim 9
Dependent Claim
24 words
The method of claim 1 in which the resilient polymeric foam is a latex foam prepared from a reactive latex and a coreactive material.
Claim 10
Dependent Claim
35 words
The method of claim 10 in which the reactive latex contains a copolymer of an alkenyl aromatic compound, a conjugated diene and an ethylenically unsaturated carboxylic acid and the coreactive material is a melamine-formaldehyde resin.
Claim 11
Dependent Claim
19 words
The method of claim 11 in which the alkenyl aromatic compound is styrene and the conjugated diene is butadiene.
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) | 1975-05-09 | 1975-11-08 | 1976-05-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-09 | 1979-11-08 | 1980-05-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-09 | 1983-11-08 | 1984-05-09 | $7700.00 | Window Closed / Lapsed |