Patent US2062365A successfully refreshed from Google Patents.
US3860041A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Self-erecting tube
Assignee: Ametek Inc
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Filing: 1973-05-29
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Granted: 1975-01-14
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Expires: 1993-05-29
Abstract
Abstract A self-erecting tube has a plurality of axially extending helical ribbons of spring material having a common axis and the same helix angle. The ribbons are axially spaced with the turns of adjacent ribbons overlapping and secured together.
Inventors
- 👤 Leigh David Leiter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 14:25
CPC Classifications
F; F16; F16L; F16L9/00; F16L9/16
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
87 words
A self-erecting tube comprising: a plurality of axially extending helical ribbons of spring material having a common axis and the same helix angle, said ribbons being axially spaced with the turns of adjacent ribbons overlapping with the upper portion of the outer face of each ribbon turn inside of the outermost ribbon being bonded to the lower portion of the inner face of the turn of the ribbon adjacent said outer face, and the outermost ribbon forming the outer surface of the tube of substantially uniform diameter.
Claim 2
Dependent Claim
87 words
A self-erecting tube comprising: a plurality of axially extending helical ribbons of spring material having a common axis and the same helix angle, said ribbons being axially spaced with the turns of adjacent ribbons overlapping with the upper portion of the outer face of each ribbon turn inside of the outermost ribbon being bonded to the lower portion of the inner face of the turn of the ribbon adjacent said outer face, and the outermost ribbon forming the outer surface of the tube of substantially uniform diameter.
Claim 3
Dependent Claim
21 words
A tube in accordance with claim 1 in which the edges of adjacent turns of the outermost ribbon are in contact.
Claim 4
Dependent Claim
92 words
A self-erecting tube comprising: a first helical axially extending ribbon of spring material, a second helical axially extending ribbon of spring material within the first ribbon having the same helix angle as the first ribbon and having turns partially overlapping the turns of the first ribbon with the upper portion of the outer face of the turns of the second ribbon bonded to the lower portion of the inner face of the turns of the first ribbon, and said first ribbon forming the outer surface of the tube of substantially uniform diameter.
Claim 5
Dependent Claim
92 words
A self-erecting tube comprising: a first helical axially extending ribbon of spring material, a second helical axially extending ribbon of spring material within the first ribbon having the same helix angle as the first ribbon and having turns partially overlapping the turns of the first ribbon with the upper portion of the outer face of the turns of the second ribbon bonded to the lower portion of the inner face of the turns of the first ribbon, and said first ribbon forming the outer surface of the tube of substantially uniform diameter.
Claim 6
Dependent Claim
63 words
A tube in accordance with claim 3 having a third helical axially extending ribbon of spring material within the second ribbon and having turns partially overlapping the turns of the second ribbon with the upper portion of the outer face of the turns of the third ribbon bonded to the lower portion of the inner face of the turns of the second ribbon.
Claim 7
Dependent Claim
21 words
A tube in accordance with claim 3 in which the edges of adjacent turns of the first ribbon are in contact.
Claim 8
Dependent Claim
18 words
A tube in accordance with claim 5 in which the second ribbon is narrower than the first ribbon.
Claim 9
Dependent Claim
33 words
A tube in accordance with claim 5 in which the upper edge of the first ribbon is beveled and the lower edge of the first ribbon is undercut receiving the beveled upper edge.
Claim 10
Dependent Claim
39 words
A tube in accordance with claim 5 in which the second ribbon has a beveled upper edge and an undercut lower edge adapted to receive the beveled upper edge and the second ribbon is narrower than the first ribbon.
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) | 1978-01-13 | 1978-07-15 | 1979-01-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-01-13 | 1982-07-15 | 1983-01-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-01-13 | 1986-07-15 | 1987-01-14 | $7700.00 | Window Closed / Lapsed |