Patent US178821A successfully refreshed from Google Patents.
US3566924A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressure-resistant fiber reinforced hose
Assignee: Orszagos Gumiipari Vallalat
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Filing: 1969-01-02
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Granted: 1971-03-02
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Expires: 1989-01-02
Abstract
Abstract A pressure-resistant hose, particularly for deep drilling, comprises spaced oppositely helically wound reinforcing inserts whose pitch, measured from a plane perpendicular to the axis of the hose, increases radially outwardly from insert to insert, for example, 6''-5* for the innermost, 25-32* for the next, and 3845* for the next outer layer.
Inventors
- 👤 Sandor Ambrus
- 👤 Katalin Teleki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:30
CPC Classifications
B; B29; B29D; B29D23/00; B29D23/001; E; E21; E21B; E21B17/00; E21B17/20; F; F16; F16L; F16L11/00; F16L11/04; F16L11/08; F16L11/088; F16L11/10; B29K; B29K2021/00; B29K2105/00; B29K2105/06
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
127 words
A pressure-resistant hose comprising a rubber tube with multilayered embedding and intermediary textile layers and reinforcing inserts and a covering rubber coat, comprising at least two helically wound reinforcing inserts having a pitch increasing from the axis of the hose towards the covering coat from layer to layer, as measured from a plane perpendicular to the axis of the hose, in such a way that the reinforcing inserts satisfy the formulas: Pt1 Pa2 and Pt2 Pa1 wherein Pt1 is the tangential pressure resistance of a first insert wound in one direction; Pa2 is the axial pressure resistance of a second insert wound in the opposite direction; Pt2 is the tangential pressure resistance of said second insert; and Pa2 is the axial pressure resistance of said first insert.
Claim 2
Dependent Claim
127 words
A pressure-resistant hose comprising a rubber tube with multilayered embedding and intermediary textile layers and reinforcing inserts and a covering rubber coat, comprising at least two helically wound reinforcing inserts having a pitch increasing from the axis of the hose towards the covering coat from layer to layer, as measured from a plane perpendicular to the axis of the hose, in such a way that the reinforcing inserts satisfy the formulas: Pt1 Pa2 and Pt2 Pa1 wherein Pt1 is the tangential pressure resistance of a first insert wound in one direction; Pa2 is the axial pressure resistance of a second insert wound in the opposite direction; Pt2 is the tangential pressure resistance of said second insert; and Pa2 is the axial pressure resistance of said first insert.
Claim 3
Dependent Claim
35 words
Hose according to claim 1, and an auxiliary reinforcing insert wound helically under the reinforcing inserts with a pitch between 6'' and 5* as measured from a plane perpendicular to the axis of the hose.
Claim 4
Dependent Claim
43 words
Hose according to claim 1, wherein the pitch of the first reinforcing insert is between 25 and 32* and the pitch of the second reinforcing insert is between 38 and 45* as measured from a plane perpendicular to the axis of the hose.
Claim 5
Dependent Claim
83 words
A hose according to claim 1, comprising four reinforcing inserts, wherein the first reinforcing insert has a pitch between 20 and 30*, the second reinforcing insert is wound in opposite direction with a pitch between 25 and 35*, the third reinforcing insert is wound in the same direction as the first reinforcing insert, with a pitch between 35 and 45*, and the fourth reinforcing insert is wound in the same direction as the second reinforcing insert with a pitch between 40 and 50*.
Claim 6
Dependent Claim
13 words
A hose according to claim 1 wherein the reinforcing inserts are metal wires.
References Cited (Backward Citations)
US3212528A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-03-01 | 1974-08-31 | 1975-03-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-03-01 | 1978-08-31 | 1979-03-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-03-01 | 1982-08-31 | 1983-03-02 | $7700.00 | Window Closed / Lapsed |