Patent US4875954A successfully refreshed from Google Patents.
US4875954A
Expired / Lapsed
US
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Method and apparatus for manufacturing carpet
Assignee: EBONWOOD Ltd A BRITISH Co
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Filing: 1988-02-29
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Granted: 1989-10-24
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Expires: 2008-02-29
Abstract
Abstract In a carpet manufacturing method respective webs of material are provided to form an upper and a base layer respectively. The webs are advanced and brought together into superimposed relationship. A hot-melt adhesive is applied between the layers immediately before the webs are brought together. The webs are subsequently pressed together and then cooled to cause them to adhere together.
Inventors
- 👤 Colin Griffiths
- 👤 William G. Walker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 23:26
CPC Classifications
D; D06; D06N; D06N3/00; D06N3/0086; D06N3/0088; D06N3/009; C; C09; C09J; C09J5/00; C09J5/06; D06N7/00; D06N7/0063; D06N7/0071; D06N7/0078; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1052; Y10T156/1084; Y10T428/00; Y10T428/23907; Y10T428/23979; Y10T428/23986; Y10T428/23993
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
74 words
A carpet manufacturing method comprising providing respective webs of material to form an upper layer and a base layer respectively, advancing and bringing together the webs into superimposed relationship, applying a hot-melt adhesive between the layers by means of at least one nozzle delivering the adhesive in an aerated diffuse spray pattern, immediately before the webs are brought together, and subsequently pressing the webs together and cooling them to cause them to adhere together.
Claim 2
Dependent Claim
74 words
A carpet manufacturing method comprising providing respective webs of material to form an upper layer and a base layer respectively, advancing and bringing together the webs into superimposed relationship, applying a hot-melt adhesive between the layers by means of at least one nozzle delivering the adhesive in an aerated diffuse spray pattern, immediately before the webs are brought together, and subsequently pressing the webs together and cooling them to cause them to adhere together.
Claim 3
Dependent Claim
26 words
A method according to claim 1, wherein the resulting carpet is conveyed to a measuring and cutting installation where measured lengths are cut off in succession.
Claim 4
Dependent Claim
29 words
A method to claim 2, wherein the measuring means of said installation include switch means engageable by the carpet and arranged to actuate the cutting means of said installation.
Claim 5
Dependent Claim
80 words
Carpet manufacturing apparatus comprising means for supplying and advancing webs of material to form an upper layer and a base layer respectively, the webs being brought together, at least on nozzle for delivering hot-melt adhesive in an aerated diffuse spray pattern between the layers at a zone immediately prior to the position at which the webs are brought together, and means provided in succession for pressing the webs together and for cooling the webs to cause them to adhere together.
Claim 6
Dependent Claim
80 words
Carpet manufacturing apparatus comprising means for supplying and advancing webs of material to form an upper layer and a base layer respectively, the webs being brought together, at least on nozzle for delivering hot-melt adhesive in an aerated diffuse spray pattern between the layers at a zone immediately prior to the position at which the webs are brought together, and means provided in succession for pressing the webs together and for cooling the webs to cause them to adhere together.
Claim 7
Dependent Claim
22 words
Apparatus according to claim 4, further comprising means for measuring and cutting successive lengths of the resulting carpet to form carpet tiles.
Claim 8
Dependent Claim
29 words
Apparatus according to claim 5, wherein the measuring means of said installation include switch means engageable by the carpet and arranged to actuate the cutting means of said installation.
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) | 1992-10-23 | 1993-04-24 | 1993-10-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-10-23 | 1997-04-24 | 1997-10-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-10-23 | 2001-04-24 | 2001-10-24 | $7700.00 | Window Closed / Lapsed |