Patent US3309003A successfully refreshed from Google Patents.
US3309003A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for forming spiral tubing from a ribbon of thin material
Assignee: UNIVERSAL METAL HOSE CO
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Filing: 1964-05-11
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Granted: 1967-03-14
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Expires: 1984-05-11
Abstract
No abstract record available.
Inventors
- 👤 Thomas J Crawford
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 10:41
CPC Classifications
B; B21; B21C; B21C37/00; B21C37/06; B21C37/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
102 words
IN APPARATUS FOR FORMING SPIRAL TUBING FROM A RIBBON OF MATERIAL, FIRST AND SECOND TUBULAR, ROTATABLE MANDRELS AXIALLY ALIGNED IN ENDWISE RELATION; MEANS FOR GUIDING AND CONTINUOUSLY FEEDING A RIBBON OF MATERIAL DIAGONALLY ONTO AND AROUND SAID FIRST AND SECOND MANDRELS IN SUCCESSION; MEANS FOR ROTATING SAID FIRST MANDREL IN ONE DIRECTION WHICH IS OPPOSITE THE DIRECTION OF WRAP OF THE RIBBON FEEDING THEREON; MEANS FOR ROTATING SAID SECOND MANDREL OPPOSITE SAID FIRST MANDREL; AND SECURING MEANS INTERMEDIATE THE ENDS OF SAID MANDRELS FOR SECURING THE MEETING EDGES OF SUCCESSIVE WRAPS OF SAID RIBBON TO PRODUCE SPIRAL TUBING ON SAID SECOND MANDREL.
Claim 2
Dependent Claim
102 words
IN APPARATUS FOR FORMING SPIRAL TUBING FROM A RIBBON OF MATERIAL, FIRST AND SECOND TUBULAR, ROTATABLE MANDRELS AXIALLY ALIGNED IN ENDWISE RELATION; MEANS FOR GUIDING AND CONTINUOUSLY FEEDING A RIBBON OF MATERIAL DIAGONALLY ONTO AND AROUND SAID FIRST AND SECOND MANDRELS IN SUCCESSION; MEANS FOR ROTATING SAID FIRST MANDREL IN ONE DIRECTION WHICH IS OPPOSITE THE DIRECTION OF WRAP OF THE RIBBON FEEDING THEREON; MEANS FOR ROTATING SAID SECOND MANDREL OPPOSITE SAID FIRST MANDREL; AND SECURING MEANS INTERMEDIATE THE ENDS OF SAID MANDRELS FOR SECURING THE MEETING EDGES OF SUCCESSIVE WRAPS OF SAID RIBBON TO PRODUCE SPIRAL TUBING ON SAID SECOND MANDREL.
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) | 1970-03-13 | 1970-09-12 | 1971-03-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-03-13 | 1974-09-12 | 1975-03-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-03-13 | 1978-09-12 | 1979-03-14 | $7700.00 | Window Closed / Lapsed |