Patent US4798230A successfully refreshed from Google Patents.
US4798230A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heatable plastic hose
Assignee: Rehau Automotive SE and Co KG
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Filing: 1987-08-21
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Granted: 1989-01-17
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Expires: 2007-08-21
Abstract
Abstract A heatable plastic hose for transporting fluids, particularly liquids, includes a tubular hose having a cross-sectional center point and a hose wall which defines, along the inner surface thereof, a longitudinal cavity having a cross-sectional center point which is laterally offset from the cross-sectional center point of the tubular hose, the tubular hose having, in cross-section, a first wall portion and a second wall portion, the first wall portion being thicker than the second wall portion; and a heating conductor wire which is longitudinally coextensive with the tubular hose and is embedded in the first wall portion.
Inventors
- 👤 Siegfried Hopperdietzel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 14:18
CPC Classifications
H; H05; H05B; H05B3/00; H05B3/40; H05B3/54; H05B3/58; B; B60; B60S; B60S1/00; B60S1/02; B60S1/46; B60S1/48; F; F16; F16L; F16L11/00; F16L11/04; F16L11/12; F16L11/127; F16L53/00; F16L53/30; F16L53/35; F16L53/38
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
111 words
A heatable plastic hose for transporting fluids, said hose having only a single longitudinal cavity defined therein, comprising: a tubular hose wall having a cross-sectional center point which defines, along the inner surface thereof, only a single longitudinal cavity having a cross-sectional center point which is laterally offset from the cross-sectional center point of the tubular hose wall, the tubular hose wall having, in cross-section, a first wall portion and a second wall portion, the first wall portion being thicker than the second wall portion; and a heating conductor wire which is longitudinally coextensive with and parallel to the tubular hose wall and is completely embedded in the first wall portion.
Claim 2
Dependent Claim
111 words
A heatable plastic hose for transporting fluids, said hose having only a single longitudinal cavity defined therein, comprising: a tubular hose wall having a cross-sectional center point which defines, along the inner surface thereof, only a single longitudinal cavity having a cross-sectional center point which is laterally offset from the cross-sectional center point of the tubular hose wall, the tubular hose wall having, in cross-section, a first wall portion and a second wall portion, the first wall portion being thicker than the second wall portion; and a heating conductor wire which is longitudinally coextensive with and parallel to the tubular hose wall and is completely embedded in the first wall portion.
Claim 3
Dependent Claim
64 words
The heatable plastic hose according to claim 1, wherein a first hose wall region is defined between the heating conductor wire and the longitudinal cavity and a second hose wall region is defined between the heating conductor wire and the outer surface of the tubular hose wall, and wherein the first hose wall region is thinner in cross-section than the second hose wall region.
Claim 4
Dependent Claim
17 words
The heatable plastic hose according to claim 1, further comprising means for reinforcing the tubular hose wall.
Claim 5
Dependent Claim
81 words
The heatable plastic hose according to claim 3, wherein the means for reinforcing the tubular hose wall comprises a first tubular reinforcing structure extending coextensively with and being embedded in the tubular hose wall at a predetermined distance inwardly of the outer surface of the tubular hose wall and outwardly of the heating conductor wire, which predetermined distance is selected so that the first tubular reinforcing structure does not contact the heating conductor wire and does not contact the longitudinal cavity.
Claim 6
Dependent Claim
19 words
The heatable plastic hose according to claim 4, wherein the first tubular reinforcing structure is a first plaited structure.
Claim 7
Dependent Claim
34 words
The heatable plastic hose according to claim 5, wherein the first plaited structure is comprised of strands or strips composed of at least one inorganic material selected from a metal, an alloy, and fiberglass.
Claim 8
Dependent Claim
47 words
The heatable plastic hose according to claim 4, wherein the means for reinforcing the tubular hose wall further comprises a second tubular reinforcing structure positioned within and coextensive with the longitudinal cavity and being at least partially embedded in the inner surface of the tubular hose wall.
Claim 9
Dependent Claim
19 words
The heatable plastic hose according to claim 7, wherein the second tubular reinforcing structure is a second plaited structure.
Claim 10
Dependent Claim
34 words
The heatable plastic hose according to claim 8, wherein the second plaited structure is comprised of strands or strips composed of at least one inorganic material selected from a metal, an alloy, and fiberglass.
Claim 11
Dependent Claim
45 words
The heatable plastic hose according to claim 3, wherein the means for reinforcing the tubular hose wall comprises a tubular reinforcing structure positioned within and coextensively with the longitudinal cavity, and being at least partially embedded in the inner surface of the tubular hose wall.
Claim 12
Dependent Claim
17 words
The heatable plastic hose according to claim 10, wherein the tubular reinforcing structure is a plaited structure.
Claim 13
Dependent Claim
33 words
The heatable plastic hose according to claim 11, wherein the plaited structure is comprised of strands or strips composed of at least one inorganic material selected from a metal, an alloy, and fiberglass.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-01-17 | 1992-07-18 | 1993-01-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-01-17 | 1996-07-18 | 1997-01-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-01-17 | 2000-07-18 | 2001-01-17 | $7700.00 | Window Closed / Lapsed |