US3689190A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Appratus for forming a tube socket on a tube consisting of thermoplastic synthetic material
Assignee: Inteco Establishment
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Filing: 1970-07-17
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Granted: 1972-09-05
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Expires: 1990-07-17
Abstract
Abstract A tube of thermoplastic synthetic material is formed in automatically continual operations. The leading end of a tubular slab of such material being extruded from an extrusion unit projects into a movably mounted preheater which is pushed thereby at extrusion speed. After the preheater has moved a predetermined distance, the extruded slab is severed and the speed of the preheater is accelerated by connecting it to a drive mechanism to longitudinally separate the severed tube from the extruding slab. The severed tube is now transferred automatically to a socket forming station where the preheated end is thrust into a socket forming device.
Inventors
- 👤 Roman Breitfuss
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 16:28
CPC Classifications
B; B29; B29C; B29C48/00; B29C48/001; B29C48/0022; F; F16; F16L; F16L47/00; F16L47/06; B29B; B29B13/00; B29B13/02; B29B13/023; B29B13/024; B29B13/025; B29C31/00; B29C31/002; B29C48/03; B29C48/09; B29C48/25; B29C48/78; B29C48/793; B29C48/88; B29C48/90; B29C48/908; B29C48/91; B29C48/911; B29C48/9115; B29L; B29L2023/00; B29L2023/22
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
97 words
Apparatus for formiNg a tube socket at one end of a tube of thermoplastic material comprising means for forming an endless tube by an extrusion process, means for severing said endless tube to a predetermined length to form said tube, means for heating said tube one end during the extrusion process and prior to operation of said severing means comprising a preheater mounted for movement with said tube during the extrusion process, and tube socket forming means for said tube one end operable after severing of said endless tube to a predetermined length to form said tube.
Claim 2
Dependent Claim
97 words
Apparatus for formiNg a tube socket at one end of a tube of thermoplastic material comprising means for forming an endless tube by an extrusion process, means for severing said endless tube to a predetermined length to form said tube, means for heating said tube one end during the extrusion process and prior to operation of said severing means comprising a preheater mounted for movement with said tube during the extrusion process, and tube socket forming means for said tube one end operable after severing of said endless tube to a predetermined length to form said tube.
Claim 3
Dependent Claim
35 words
The apparatus of claim 1 wherein said preheater is positioned coaxially with said tube, said tube socket forming means being positioned beside said preheater outside of the path of travel of said preheater and tube.
Claim 4
Dependent Claim
36 words
The apparatus of claim 2 wherein said preheater further comprises reversible drive means for moving the preheater, and switch means for said reversible drive means, operable by contact with said preheater and said tube one end.
Claim 5
Dependent Claim
82 words
The apparatus of claim 3 wherein said drive means comprises a motor mounted on the preheater, a drive shaft extended from the motor, a sprocket on the free end of the drive shaft, track means beneath the preheater for guiding the preheater along a path parallel to the axis of the extruded endless tube, and means on said track means cooperating with said drive shaft sprocket for moving said preheater along said track means in response to operation of said drive motor.
Claim 6
Dependent Claim
21 words
The apparatus of claim 3 wherein said drive means includes a selectively operable magnetic clutch and a selectively operable magnetic brake.
Claim 7
Dependent Claim
103 words
The apparatus of claim 3 wherein said switch means comprise a first switch located interiorally of the preheater and operable by contact with said tube one end to disengage said drive means during said extrusion process whereby said preheater is driven by the endless tube being extruded and a second switch operable by contact with the preheater after the extrusion process whereby said preheater is driven by the endless tube being extruded, and a second switch operable by contact with the preheater after the extrusion process is completed for energizing said drive means whereby said preheater is disengaged from said tube one end.
Claim 8
Dependent Claim
36 words
The apparatus of claim 2 wherein ejection means are provided adjacent said tube socket forming means for laterally shifting said tube of predetermined length from the tube forming extrusion means to the tube socket forming means.
Claim 9
Dependent Claim
20 words
The apparatus of claim 2 wherein said preheater includes a removable tube end receptor, interchangeable for varying tube end diameters.
Claim 10
Dependent Claim
32 words
The apparatus of claim 8 wherein said tube end receptor comprises an outer shell for receiving the tube end, said shell defining an interior chamber adapted to be filled with a liquid.
Claim 11
Dependent Claim
20 words
The apparatus of claim 9 wherein said tube end receptor further includes means within said chamber for heating said liquid.
Claim 12
Dependent Claim
104 words
Apparatus for forming a tube socket at one end of a tube of thermoplastic material comprising means for forming an endless tube by an extrusion process, means for severing said endless tube to a predetermined length to form said tube, means for heating said tube one end during the extrusion process and prior to operation of said severing means including temperature control means whereby heating of said tube one end is completed prior to operation of said severing means, and tube socket forming means for said tube one end operable after severing of said endless tube to a predetermined length to form said tube.
Claim 13
Dependent Claim
104 words
Apparatus for forming a tube socket at one end of a tube of thermoplastic material comprising means for forming an endless tube by an extrusion process, means for severing said endless tube to a predetermined length to form said tube, means for heating said tube one end during the extrusion process and prior to operation of said severing means including temperature control means whereby heating of said tube one end is completed prior to operation of said severing means, and tube socket forming means for said tube one end operable after severing of said endless tube to a predetermined length to form said tube.
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) | 1975-09-05 | 1976-03-06 | 1976-09-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-09-05 | 1980-03-06 | 1980-09-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-09-05 | 1984-03-06 | 1984-09-05 | $7700.00 | Window Closed / Lapsed |