US4200994A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Drying apparatus
Assignee: Philips Road Engineering Ltd
•
Filing: 1978-07-18
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Granted: 1980-05-06
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Expires: 1998-07-18
Abstract
Abstract Apparatus for drying tufted carpets having stenter chains for advancing the carpet of which one only is laterally adjustable, means for blowing hot air onto opposite sides of the carpet through longitudinal slots in tubes extending transversely to the carpet and tapes coupled to the adjustable chain which blank off the portions of the slots which are offset from the carpet.
Inventors
- 👤 Leslie Mellor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 08:56
CPC Classifications
F; F26; F26B; F26B13/00; F26B13/10; F26B13/108
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
172 words
A drying apparatus, for use in drying tufted carpets following application of latex thereto, comprising a housing for engaging the edges of the carpet during its passage through the housing, one stenter chain occupying a fixed position in the housing and the other stenter chain being laterally adjustable to suit the width of the carpet, said housing including a space above the carpet for circulation of hot air, tubes in the housing which are disposed above and below the stenter chains and extend transversely to the direction of travel of the carpet, the tubes having longitudinal slots constituting nozzles which direct hot air onto the top and bottom surfaces of the carpet, means for blowing hot air into the tubes, tapes coupled to the adjustable stenter chain and movable with it to blank off the portions of the slots which are offset from the carpet and a screen mounted for lateral movement with said adjustable stenter chain to increase and decrease said space in accordance with the adjustment imparted to said chain.
Claim 2
Dependent Claim
172 words
A drying apparatus, for use in drying tufted carpets following application of latex thereto, comprising a housing for engaging the edges of the carpet during its passage through the housing, one stenter chain occupying a fixed position in the housing and the other stenter chain being laterally adjustable to suit the width of the carpet, said housing including a space above the carpet for circulation of hot air, tubes in the housing which are disposed above and below the stenter chains and extend transversely to the direction of travel of the carpet, the tubes having longitudinal slots constituting nozzles which direct hot air onto the top and bottom surfaces of the carpet, means for blowing hot air into the tubes, tapes coupled to the adjustable stenter chain and movable with it to blank off the portions of the slots which are offset from the carpet and a screen mounted for lateral movement with said adjustable stenter chain to increase and decrease said space in accordance with the adjustment imparted to said chain.
Claim 3
Dependent Claim
60 words
Apparatus as claimed in claim 1, in which each tube includes, fitted into its longitudinal slot, a nozzle constituted by an extrusion defining a continuous longitudinal slot for outflow of air from the tube which has a rounded entry for the air, the extrusion having outwardly facing slots to accommodate the tube and inwardly facing slots to accommodate the tape.
Claim 4
Dependent Claim
20 words
Apparatus as claimed in claim 1, which comprises a rail accommodating the movable stenter chain and connected to the tapes.
Claim 5
Dependent Claim
23 words
Apparatus as claimed in claim 1, in which the screen has apertures containing flexible seals which embrace the tubes situated above the carpet.
References Cited (Backward Citations)
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Cited
US1759804A
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US2164174A
Cited
US3362087A
Cited
US3750428A
Cited
US4118956A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-05-06 | 1983-11-05 | 1984-05-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-05-06 | 1987-11-05 | 1988-05-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-05-06 | 1991-11-05 | 1992-05-06 | $7700.00 | Window Closed / Lapsed |