US3663134A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for manufacture of tubular components from plastics material
Assignee: Ethylene-Plastique
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Filing: 1968-10-14
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Granted: 1972-05-16
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Expires: 1988-10-14
Abstract
Abstract Apparatus for cooling extruded tube including a means for passing said tube through a tensioned, flexible, resilient, liquid permeable sleeve surrounding said tube having a means for applying liquid coolant to the surface of said sleeve and means for wiping said tube after passing said sleeve.
Inventors
- 👤 Robert Coquelin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 11:51
CPC Classifications
B; B29; B29C; B29C37/00; B29C37/0092; B29C35/00; B29C35/16; B29C48/00; B29C48/03; B29C48/09; B29C48/10; B29C48/25; B29C48/88; B29C48/885; B29C48/90; B29C48/901; B29C48/903; B29C48/911; B29C48/9115; B29C48/912; B29C48/9135
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
124 words
Apparatus for cooling an extruded plastic tube upon extrusion thereof, said apparatus comprising a flexible, resilient, liquidpermeable sleeve; means for passing an extruded tubular sheath through the flexible, resilient, liquid permeable sleeve surrounding the tube; means for applying a sufficient quantity of liquid coolant to the internal surface of said sleeve by an annular manifold surrounding the sleeve for flowing liquid cooling medium onto the sleeve; a first ring supporting one end of the sleeve above the tube in a spaced relationship therefrom; a second ring engaging the exterior surface of the tube and holding the sleeve under tension in engagement with the exterior surface of the tube; and means to wipe the exterior surface of the tube upon emergence from said second ring.
Claim 2
Dependent Claim
124 words
Apparatus for cooling an extruded plastic tube upon extrusion thereof, said apparatus comprising a flexible, resilient, liquidpermeable sleeve; means for passing an extruded tubular sheath through the flexible, resilient, liquid permeable sleeve surrounding the tube; means for applying a sufficient quantity of liquid coolant to the internal surface of said sleeve by an annular manifold surrounding the sleeve for flowing liquid cooling medium onto the sleeve; a first ring supporting one end of the sleeve above the tube in a spaced relationship therefrom; a second ring engaging the exterior surface of the tube and holding the sleeve under tension in engagement with the exterior surface of the tube; and means to wipe the exterior surface of the tube upon emergence from said second ring.
Claim 3
Dependent Claim
41 words
Apparatus according to claim 1 wherein said last-named means comprises a resilient sleeve stretched longitudinally over the tube in contact with the outer surface thereof, and means to apply a current of gas to the exterior surface of said last-named sleeve.
Claim 4
Dependent Claim
54 words
Apparatus according to claim 1 wherein said first-mentioned means comprises means for passing an extruded plastic tube downwardly upon extrusion thereof through the flexible, resilient, liquid-permeable sleeve; and wheRein said second-mentioned means comprises means for applying the liquid coolant downwardly over the internal surface of the sleeve between the sleeve and the extruded tube.
Claim 5
Dependent Claim
34 words
Apparatus according to claim 1 which further comprises means for maintaining the pressure within the interior of the plastic tube at a magnitude greater than the pressure at the external surface of the sleeve.
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) | 1975-05-16 | 1975-11-15 | 1976-05-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-16 | 1979-11-15 | 1980-05-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-16 | 1983-11-15 | 1984-05-16 | $7700.00 | Window Closed / Lapsed |