Patent US4294475A successfully refreshed from Google Patents.
US4294475A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flexible pipe connector
Assignee: Bridgestone Corp
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Filing: 1979-11-08
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Granted: 1981-10-13
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Expires: 1999-11-08
Abstract
Abstract A flexible pipe connector which makes use of a pair of intermediate sleeves each having one end portion overlapped with and connected through a rubber-like elastic body to a connection pipe, each of said intermediate sleeves being coaxially arranged with the connection pipe and adapted to move in a fluid-tight manner in the axial direction thereof.
Inventors
- 👤 Isamu Kanai
- 👤 Shigeki Okubo
- 👤 Kazuo Tsuchiya
- 👤 Toshio Takasaki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 19:10
CPC Classifications
F; F16; F16L; F16L27/00; F16L27/10; F16L27/113; F16L27/12; F16L27/127; F16L27/1275; F16L27/12751
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
139 words
A flexible pipe connector comprising; a pair of connection pipes arranged on the same axial line and spaced apart from each other, a pair of intermediate sleeves each having one end portion overlapped with each of said connection pipes and coaxially arranged therewith, each of said intermediate sleeves being provided at its opposed end portion with projections defining abutments limiting axial movement of said intermediate sleeves away from each other, a rubber-like elastic body filling up a gap formed between each of said intermediate sleeves and each of said connection pipes and bonding the former with the latter, and connection fitting means to fluid-tightly seal and connect both said intermediate sleeves with each other and permitting said intermediate sleeves to slidably move in the axial direction and limit in cooperation with said projections said movement away from each other.
Claim 2
Dependent Claim
139 words
A flexible pipe connector comprising; a pair of connection pipes arranged on the same axial line and spaced apart from each other, a pair of intermediate sleeves each having one end portion overlapped with each of said connection pipes and coaxially arranged therewith, each of said intermediate sleeves being provided at its opposed end portion with projections defining abutments limiting axial movement of said intermediate sleeves away from each other, a rubber-like elastic body filling up a gap formed between each of said intermediate sleeves and each of said connection pipes and bonding the former with the latter, and connection fitting means to fluid-tightly seal and connect both said intermediate sleeves with each other and permitting said intermediate sleeves to slidably move in the axial direction and limit in cooperation with said projections said movement away from each other.
Claim 3
Dependent Claim
117 words
The flexible pipe connector according to claim 1, wherein said connection fitting means comprises a steel pipe provided at the inner surface of both ends thereof with a projection adapted to be substantially engaged with said projection of each of said intermediate sleeve and arranged across said intermediate sleeves, a rubber ring filled up and fluid-tightly sealing a gap formed among the end portion of said steel pipe, said projection thereof and said intermediate sleeve, an annular member L-shaped in section and surrounding each of said intermediate sleeves and urging said rubber ring in the axial direction toward the center part of said connection fitting, and a fastening member for connecting said annular members with each other.
Claim 4
Dependent Claim
118 words
The flexible pipe connector according to claim 1, wherein said connection fitting means comprises a steel pipe provided at the inner surface of both ends thereof with a projection adapted to be substantially engaged with said projection of each of said intermediate sleeves and arranged across said intermediate sleeves, said steel pipe being provided at the outer surface of both ends thereof with a flange, a rubber ring circular in section and inserted in a gap formed among the end portion of said steel pipe, said projection thereof and said intermediate sleeve, and an annular member L-shaped in section and surrounding each end of said intermediate sleeves and connected to said flange by means of a fastening member.
Claim 5
Dependent Claim
53 words
The flexible pipe connector according to claim 1, wherein said pair of intermediate sleeves each have one end portion overlapped with and connected through said rubber-like elastic body to a respective connection pipe, free ends of said intermediate sleeves overlapped with each other and fluid-tightly sealed and connected by said connection fitting means.
Claim 6
Dependent Claim
61 words
The flexible pipe connector according to claim 1, wherein said connection fitting means comprises a steel pipe provided at the inner surface at each end thereof with two spaced-apart projections, each of said two spaced-apart projections arranged across said intermediate sleeves, and a circular rubber ring interposed between each of said two projections to seal said intermediate sleeves with each other.
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) | 1984-10-12 | 1985-04-13 | 1985-10-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-10-12 | 1989-04-13 | 1989-10-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-10-12 | 1993-04-13 | 1993-10-13 | $7700.00 | Window Closed / Lapsed |