US4019939A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the manufacture of hose
Assignee: Goodyear Tire and Rubber Co
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Filing: 1975-08-28
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Granted: 1977-04-26
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Expires: 1995-08-28
Abstract
Abstract The invention concerns a process for the manufacture of textile or wire-reinforced hoses, the components of which are placed while the inner tube is supported by a mandrel. According to this invention, the mandrel is made of a congealable fluid which is introduced inside the tube and then cooled and solidified during manufacturing steps wherein the formed assembly will resist mechanical stresses which would not be endured by the sole constituents of the hose. The mandrel is thereafter brought back to a liquid form to be drained off. The invention is applicable to the manufacture of medium and high pressure hoses.
Inventors
- 👤 Jean Barbier
- 👤 Paul Cachon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 05:32
CPC Classifications
B; B29; B29D; B29D23/00; B29D23/001; B29C; B29C33/00; B29C33/44; B29C33/52; B29C48/00; B29C48/15; B29C48/151; B29C48/152; B29C48/153; B29C2033/525; B29C48/03; B29C48/09
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
130 words
A process for the manufacture of a hose comprising an inner tube and reinforced by a textile or metallic structure surrounding said tube with the constituents of the reinforcing structure being applied to said tube while said tube is supported by a mandrel, the inprovement wherein the hose is manufactured by the successive steps of: A. introducing a congealable fluid in liquid form into said tube during or after the manufacture of said tube; B. cooling and solidifying said liquid to form a solid mandrel capable of withstanding mechanical stresses during the manufacture of said hose; C. applying said reinforcing structure to said tube; D. converting the solidified liquid into liquid form and curing said hose into an integral structure; and E. removing the liquid thus formed from said tube.
Claim 2
Dependent Claim
130 words
A process for the manufacture of a hose comprising an inner tube and reinforced by a textile or metallic structure surrounding said tube with the constituents of the reinforcing structure being applied to said tube while said tube is supported by a mandrel, the inprovement wherein the hose is manufactured by the successive steps of: A. introducing a congealable fluid in liquid form into said tube during or after the manufacture of said tube; B. cooling and solidifying said liquid to form a solid mandrel capable of withstanding mechanical stresses during the manufacture of said hose; C. applying said reinforcing structure to said tube; D. converting the solidified liquid into liquid form and curing said hose into an integral structure; and E. removing the liquid thus formed from said tube.
Claim 3
Dependent Claim
13 words
The process according to claim 1 wherein the congealable fluid employed is water.
Claim 4
Dependent Claim
21 words
The process according to claim 1, wherein the employed congealable fluid is water containing solids which decrease the brittleness of ice.
Claim 5
Dependent Claim
23 words
The process according to claim 1, wherein the employed congealable fluid is a wax melting at a temperature higher than the ambient temperature.
Claim 6
Dependent Claim
22 words
The process according to claim 1, wherein the tube into which said congealable fluid is introduced is cooled in a liquid medium.
Claim 7
Dependent Claim
21 words
The process according to claim 1, wherein said tube is calibrated during cooling and solidification of said congealable fluid introduced therein.
Claim 8
Dependent Claim
34 words
The process according to claim 1, wherein said congealable fluid is kept in said hose, after being converted into liquid form, under pressure during subsequent manufacturing operations and vulcanization, then removed from said hose.
References Cited (Backward Citations)
US2201691A
Cited
US2469849A
Cited
FR1100359A
Cited
US3113897A
Cited
US3425982A
Cited
US3413708A
Cited
FR1580370A
Cited
US3824141A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-04-25 | 1980-10-25 | 1981-04-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-04-25 | 1984-10-25 | 1985-04-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-04-25 | 1988-10-25 | 1989-04-26 | $7700.00 | Window Closed / Lapsed |