Patent US4242296A successfully refreshed from Google Patents.
US4242296A
Expired / Lapsed
US
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Method for making curved hose
Assignee: Dayco Products LLC
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Filing: 1979-08-27
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Granted: 1980-12-30
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Expires: 1999-08-27
Abstract
Abstract A method for the production of curved tubular elastomeric articles such as hose is described which uses a rigid, deformable mandrel. An uncured hose assembly is placed on the mandrel, and the assembly, including the mandrel, is deformed to a preselected curvilinear configuration, and then partially cured. The partially cured hose is straightened and the mandrel is removed. The partially cured hose is then returned to the curing chamber to complete the curing.
Inventors
- 👤 Charles E. Bricker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:15
CPC Classifications
B; B29; B29D; B29D23/00; B29D23/001; B29D23/003; B29D23/006; B29C; B29C35/00; B29C35/02; B29C35/0222; B29C37/00; B29C37/0003; B29C37/0017; B29C48/00; B29C48/15; B29C48/151; B29C48/152; B29C48/153; B29C48/157; B29C53/00; B29C53/02; B29C53/08; B29C53/083; B29C2793/00; B29C2793/009; B29C48/001; B29C48/0011; B29C48/0013; B29C48/0015; B29C48/0016; B29C48/0022; B29C48/03; B29C48/09; B29C48/13; B29C48/16; B29C48/18; B29C48/21; B29K; B29K2007/00; B29K2009/00; B29K2009/06; B29K2021/00; B29K2105/00; B29K2105/06; B29K2105/08; B29K2105/24; B29K2105/243; B29K2105/246; B29L; B29L2023/00; B29L2023/22
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
174 words
A method for producing curved hose which comprises, sequentially, the steps of; (a) shaping a sheet of a deformable metal to provide a hollow cylinder of a desired length and closing the ends of said cylinder, thereby providing a rigid, deformable mandrel; (b) forming a hose assembly around said mandrel by applying a first layer of an elastomeric material around said mandrel, applying a reinforcing member around said first elastomeric layer, and applying a second layer of and elastomeric material around said reinforcing member and said first layer, wherein at least one of said elastomeric layers is vulcanizable; (c) deforming said hose assembly and said mandrel to a preselected curvilinear configuration; (d) at least partially vulcanizing said hose assembly on said mandrel; (e) deforming the resulting partially vulcanized hose and said mandrel to a desired configuration of lesser curviture than said preselected curvilinear configuration; (f) separating said mandrel and said partially vulcanized hose; (g) allowing said partially vulcanized hose to return to said preselected curvilinear configuration; and (h) completing the vulcanization of said hose.
Claim 2
Independent Claim
174 words
A method for producing curved hose which comprises, sequentially, the steps of; (a) shaping a sheet of a deformable metal to provide a hollow cylinder of a desired length and closing the ends of said cylinder, thereby providing a rigid, deformable mandrel; (b) forming a hose assembly around said mandrel by applying a first layer of an elastomeric material around said mandrel, applying a reinforcing member around said first elastomeric layer, and applying a second layer of and elastomeric material around said reinforcing member and said first layer, wherein at least one of said elastomeric layers is vulcanizable; (c) deforming said hose assembly and said mandrel to a preselected curvilinear configuration; (d) at least partially vulcanizing said hose assembly on said mandrel; (e) deforming the resulting partially vulcanized hose and said mandrel to a desired configuration of lesser curviture than said preselected curvilinear configuration; (f) separating said mandrel and said partially vulcanized hose; (g) allowing said partially vulcanized hose to return to said preselected curvilinear configuration; and (h) completing the vulcanization of said hose.
Claim 3
Dependent Claim
28 words
The method of claim 1 wherein said partial vulcanizing step (d) comprises vulcanizing said hose assembly to from about 40 to about 70 percent of the total cure.
Claim 4
Dependent Claim
12 words
The method of claim 1 wherein said mandrel is made of lead.
Claim 5
Dependent Claim
12 words
The method of claim 1 wherein said mandrel is made of aluminum.
Claim 6
Dependent Claim
12 words
The method of claim 1 wherein said mandrel is made of steel.
Claim 7
Independent Claim
172 words
A method for producing curved hose which comprises, sequentially, the steps of; (a) shaping a sheet of a deformable metal to provide a hollow cylinder of a desired length and closing the ends of said cylinder, thereby providing a rigid deformable mandrel; (b) providing a hose assembly comprising a first layer of elastomeric material, a reinforcing member around said first elastomeric layer, and a second layer of an elastomeric material around said reinforcing member and said first layer, wherein at least one of said elastomeric layers is vulcanizable; (c) placing said hose assembly on said mandrel; (d) deforming said hose assembly and said mandrel to a preselected curvilinear configuration; (e) at least partially vulcanizing said hose assembly on said mandrel; (f) deforming the resulting partially vulcanized hose and said mandrel to a desired configuration of lesser curviture than said preselected curvilinear configuration; (g) separating said mandrel and said partially vulcanized hose; (h) allowing said partially vulcanized hose to return to said preselected curvilinear configuration; and (i) completing the vulcanization of said hose.
Claim 8
Independent Claim
172 words
A method for producing curved hose which comprises, sequentially, the steps of; (a) shaping a sheet of a deformable metal to provide a hollow cylinder of a desired length and closing the ends of said cylinder, thereby providing a rigid deformable mandrel; (b) providing a hose assembly comprising a first layer of elastomeric material, a reinforcing member around said first elastomeric layer, and a second layer of an elastomeric material around said reinforcing member and said first layer, wherein at least one of said elastomeric layers is vulcanizable; (c) placing said hose assembly on said mandrel; (d) deforming said hose assembly and said mandrel to a preselected curvilinear configuration; (e) at least partially vulcanizing said hose assembly on said mandrel; (f) deforming the resulting partially vulcanized hose and said mandrel to a desired configuration of lesser curviture than said preselected curvilinear configuration; (g) separating said mandrel and said partially vulcanized hose; (h) allowing said partially vulcanized hose to return to said preselected curvilinear configuration; and (i) completing the vulcanization of said hose.
Claim 9
Dependent Claim
28 words
The method of claim 6 wherein said partial vulcanizing step (e) comprises vulcanizing said hose assembly to from about 40 to about 70 percent of the total cure.
Claim 10
Dependent Claim
12 words
The method of claim 6 wherein said mandrel is made of lead.
Claim 11
Dependent Claim
13 words
The method of claim 6 wherein said deformable mandrel is made of aluminum.
Claim 12
Dependent Claim
13 words
The method of claim 6 wherein said deformable mandrel is made of steel.
Claim 13
Independent Claim
189 words
A method for producing curved hose which comprises, sequentially, the steps of: a. providing a plurality of rigid, deformable mandrels; b. arranging said mandrels in end-to-end fashion with a plastic spacing member between each of said mandrels; c. extruding a first layer of an elastomeric material around said mandrels and said spacing members; d. applying a reinforcing member around first elastomeric layer; e. applying a second layer of an elastomeric material around said reinforcing member and said first layer; f. cutting through said elastomeric material layers and said reinforcing member and said spacing member to provide a plurality of individual hose assemblies on said mandrels; g. deforming said hose assembly and said mandrel to a preselected curvilinear configuration; h. at least partially vulcanizing said hose assembly on said mandrel; i. deforming the resulting partially vulcanized hose and said mandrel to a desired configuration of lesser curvature than said preselected curvilinear configuration; j. separating said mandrel and said partially vulcanized hose; k. allowing said partially vulcanized hose to return to said preselected curvilinear configuration; l. completing the vulcanization of said hose; and, m. returning said mandrel to said step (b).
Claim 14
Independent Claim
189 words
A method for producing curved hose which comprises, sequentially, the steps of: a. providing a plurality of rigid, deformable mandrels; b. arranging said mandrels in end-to-end fashion with a plastic spacing member between each of said mandrels; c. extruding a first layer of an elastomeric material around said mandrels and said spacing members; d. applying a reinforcing member around first elastomeric layer; e. applying a second layer of an elastomeric material around said reinforcing member and said first layer; f. cutting through said elastomeric material layers and said reinforcing member and said spacing member to provide a plurality of individual hose assemblies on said mandrels; g. deforming said hose assembly and said mandrel to a preselected curvilinear configuration; h. at least partially vulcanizing said hose assembly on said mandrel; i. deforming the resulting partially vulcanized hose and said mandrel to a desired configuration of lesser curvature than said preselected curvilinear configuration; j. separating said mandrel and said partially vulcanized hose; k. allowing said partially vulcanized hose to return to said preselected curvilinear configuration; l. completing the vulcanization of said hose; and, m. returning said mandrel to said step (b).
Claim 15
Dependent Claim
28 words
The method of claim 11 wherein said partial vulcanizing step (h) comprises vulcanizing said hose assembly to from about 40 to about 70 percent of the total cure.
Claim 16
Dependent Claim
10 words
The method of claim 11 wherein said mandrels are hollow.
Claim 17
Dependent Claim
13 words
The method of claim 11 wherein said mandrels are closed at both ends.
Claim 18
Dependent Claim
12 words
The method of claim 11 wherein said mandrels are made of lead.
Claim 19
Dependent Claim
12 words
The method of claim 11 wherein said mandrels are made of aluminum.
Claim 20
Dependent Claim
12 words
The method of claim 11 wherein said mandrels are made of steel.
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) | 1983-12-30 | 1984-06-30 | 1984-12-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-12-30 | 1988-06-30 | 1988-12-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-12-30 | 1992-06-30 | 1992-12-30 | $7700.00 | Window Closed / Lapsed |