Patent FR878999A successfully refreshed from Google Patents.
US3946727A
Expired / Lapsed
US
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Flexible tube assembly for an endoscope
Assignee: Olympus Corp
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Filing: 1972-07-11
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Granted: 1976-03-30
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Expires: 1992-07-11
Abstract
Abstract A flexible tube assembly for an endoscope consisting of a core tube formed by spirally winding an elastic metal band with a layer of material little permeable to X-rays coated on said core tube and a flexible sheath concentrically surrounding said core tube.
Inventors
- 👤 Takeshi Okada
- 👤 Katsuyuki Kanehira
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 03:51
CPC Classifications
A; A61; A61B; A61B1/00; A61B1/00064; A61B1/00071; A61B1/005
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
51 words
A flexible tube assembly for an endoscope comprising a tubular, flexible core formed of a spiral winding of elastic metal strip, said metal strip having coated upon both the inner and outer surfaces a layer of X-ray opaque material and a flexible sheath concentrically surrounding said tubular core in close fit.
Claim 2
Dependent Claim
51 words
A flexible tube assembly for an endoscope comprising a tubular, flexible core formed of a spiral winding of elastic metal strip, said metal strip having coated upon both the inner and outer surfaces a layer of X-ray opaque material and a flexible sheath concentrically surrounding said tubular core in close fit.
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) | 1979-03-30 | 1979-09-29 | 1980-03-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-03-30 | 1983-09-29 | 1984-03-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-03-30 | 1987-09-29 | 1988-03-30 | $7700.00 | Window Closed / Lapsed |