Patent US1887494A successfully refreshed from Google Patents.
Patent US3748077A successfully refreshed from Google Patents.
US3748077A
Expired / Lapsed
US
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Apparatus for producing pipe having a bend
Assignee: Phillips Petroleum Co
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Filing: 1969-05-19
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Granted: 1973-07-24
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Expires: 1989-05-19
Abstract
Abstract An extrudate for a bend is produced by extruding thermoplastics and constraining the extrudate in a predetermined path to produce a desired bend.
Inventors
- 👤 G Williams
- 👤 O Larsen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 16:56
CPC Classifications
B; B29; B29C; B29C53/00; B29C53/02; B29C53/08; B29C53/083; B29C48/00; B29C48/03; B29C48/131; B29C48/001; B29C48/0018; B29C48/09; B29C48/10; B29L; B29L2023/00; B29L2023/22
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
81 words
In an apparatus for producing extrudate from thermoplastic material including extrusion means for forming a thermoplastic material into an extrudate, the improvement comprising means associated with said extrusion means for gripping said extrudate to constrain the travel of said extrudate to effect a bend therein, said means for gripping and constraining said extrudate to effect a bend therein includes a collar for receiving the end of said extrudate, a support, and an arm pivotally attached to said support and said collar.
Claim 2
Dependent Claim
81 words
In an apparatus for producing extrudate from thermoplastic material including extrusion means for forming a thermoplastic material into an extrudate, the improvement comprising means associated with said extrusion means for gripping said extrudate to constrain the travel of said extrudate to effect a bend therein, said means for gripping and constraining said extrudate to effect a bend therein includes a collar for receiving the end of said extrudate, a support, and an arm pivotally attached to said support and said collar.
Claim 3
Dependent Claim
16 words
Apparatus according to claim 1 wherein said extrudate is pipe, and wherein said collar is cylindrical.
Claim 4
Independent Claim
76 words
An apparatus for bending pipe into curves which is being extruded from an extruding device comprising: a former member for contacting and gripping the end of a straight pipe being extruded from said extruder device, and means for moving said former member downwardly and away from said extruder in an arcuate path so as to carry and bend said straight pipe into a curve as determined by the arcuate path of movement of the former member.
Claim 5
Independent Claim
76 words
An apparatus for bending pipe into curves which is being extruded from an extruding device comprising: a former member for contacting and gripping the end of a straight pipe being extruded from said extruder device, and means for moving said former member downwardly and away from said extruder in an arcuate path so as to carry and bend said straight pipe into a curve as determined by the arcuate path of movement of the former member.
Claim 6
Dependent Claim
44 words
The apparatus of claim 3 wherein said moving means includes a movable frame means, said frame means having a first end which is pivotally attached to a base frame and a second end which is free to move about the point of pivotal attachment.
Claim 7
Dependent Claim
45 words
The apparatus of claim 4 wherein said former member is carried by the second end of said movable frame, whereby the former member can be swung in an arcuate path determined by the position of said former member relative to said point of pivotal attachment.
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) | 1976-07-23 | 1977-01-22 | 1977-07-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-23 | 1981-01-22 | 1981-07-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-23 | 1985-01-22 | 1985-07-24 | $7700.00 | Window Closed / Lapsed |