Patent US3773087A successfully refreshed from Google Patents.
US3773087A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flexible extensible and contractable tube
Assignee: Individual
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Filing: 1970-09-08
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Granted: 1973-11-20
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Expires: 1990-09-08
Abstract
Abstract A flexible extensible and contractible tube is provided which comprises a main body of straight tube joined at its opposite ends with a pair of bellows tubes, the outer surface of the straight and bellows tubes being encased by a network formed of braided wire or strip material, the network being clamped at its ends to extensions of the bellows tubes with clamping members. The present invention is simple to form, exhibits reduced resistance to fluid flow through its interior, permits ready extension and contraction of the network, and maintains well stabilized shape.
Inventors
- 👤 H Katayama
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:58
CPC Classifications
F; F16; F16L; F16L51/00; F16L51/02; F16L51/025; F16L51/027
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
132 words
A flexible, extensible and contractible tube comprising an elongated, rigid, tubular main body that is straight throughout the length thereof, a tubular, flexible bellows coaxially and contiguously secured to each end of said main body, the combination of said main body and said bellows defining a tubular member having a rigid, central section and flexible sections at each end thereof, an elongated, tubular, mesh-type network coaxially encasing the entire length of said main body and said bellows, said network being both extensible and contractible, means for clamping siad network relative to said bellows, a rigid, tubular extension having a transverse flange coaxially secured to each said bellows, said network being additionally secured to said extension by said clamping means, and a resilient ring intermediate each said flange and each said clamping means.
Claim 2
Dependent Claim
132 words
A flexible, extensible and contractible tube comprising an elongated, rigid, tubular main body that is straight throughout the length thereof, a tubular, flexible bellows coaxially and contiguously secured to each end of said main body, the combination of said main body and said bellows defining a tubular member having a rigid, central section and flexible sections at each end thereof, an elongated, tubular, mesh-type network coaxially encasing the entire length of said main body and said bellows, said network being both extensible and contractible, means for clamping siad network relative to said bellows, a rigid, tubular extension having a transverse flange coaxially secured to each said bellows, said network being additionally secured to said extension by said clamping means, and a resilient ring intermediate each said flange and each said clamping means.
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) | 1976-11-19 | 1977-05-21 | 1977-11-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-11-19 | 1981-05-21 | 1981-11-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-11-19 | 1985-05-21 | 1985-11-20 | $7700.00 | Window Closed / Lapsed |