Patent US3583187A successfully refreshed from Google Patents.
US3583187A
Expired / Lapsed
US
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Methods and apparatus for shaping hollow bodies
Assignee: Individual
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Filing: 1967-05-02
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Granted: 1971-06-08
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Expires: 1987-05-02
Abstract
Abstract A method and apparatus for forming an ogive and in which a generally frustoconical hollow metal body is placed within a form having an ogival inner surface, following which a generally frustoconical mandrel formed of deformable but relatively noncompressible material is placed within the body. At axially spaced intervals within the mandrel are compression discs that are connected to relatively telescoping, axially extending sleeves which extend different distances beyond one end of the mandrel so as to be displaced axially and successively to deform axially successive portions of the mandrel radially and reshape the body to ogival form. As successive axial portions of the mandrel are deformed radially, the previously deformed portions of the mandrel are subjected to increasing axially compressive forces so as further to be deformed radially.
Inventors
- 👤 Edward S Kontranowski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 08:27
CPC Classifications
B; B21; B21D; B21D51/00; B21D51/02; B21D51/10; B21D22/00; B21D22/10; B21D22/105
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
141 words
Apparatus for shaping a hollow body having a wall, said apparatus comprising form means having a surface corresponding to the configuration to which the body wall is to be shaped; mandrel means composed of deformable material and normally being spaced from said surface a distance at least sufficient to accommodate said body wall between said mandrel means and said surface; compression means operable to subject discrete portions of said mandrel to compressive forces for deforming said portions toward said surface; and force exerting means acting on said compression means in a direction axially of said mandrel means comprising a plurality of relatively telescoping members each of which projects a different distance from one end of said deformable material, and said compression means comprising at least on flange secured to each of said telescoping members and extending radially into said deformable material.
Claim 2
Dependent Claim
141 words
Apparatus for shaping a hollow body having a wall, said apparatus comprising form means having a surface corresponding to the configuration to which the body wall is to be shaped; mandrel means composed of deformable material and normally being spaced from said surface a distance at least sufficient to accommodate said body wall between said mandrel means and said surface; compression means operable to subject discrete portions of said mandrel to compressive forces for deforming said portions toward said surface; and force exerting means acting on said compression means in a direction axially of said mandrel means comprising a plurality of relatively telescoping members each of which projects a different distance from one end of said deformable material, and said compression means comprising at least on flange secured to each of said telescoping members and extending radially into said deformable material.
Claim 3
Dependent Claim
16 words
The apparatus set forth in claim 1 wherein said flanges are axially spaced from one another.
Claim 4
Dependent Claim
135 words
Apparatus for shaping a hollow body having a wall, said apparatus comprising form means having a surface corresponding to the configuration to which the body wall is to be shaped; mandrel means composed of deformable material and normally being spaced from said surface a distance at least sufficient to accommodate said body wall between said mandrel means and said surface; a plurality of relatively movable, telescoping members extending axially of said mandrel means; and at least on flange secured to each of said telescoping members and extending radially into said deformable material, said flanges being spaced axially From one another and being operable to subject discrete portions of said mandrel means to compressive forces in response to relative axial movement of said telescoping members for deforming said portions of said mandrel means toward said surface.
Claim 5
Dependent Claim
135 words
Apparatus for shaping a hollow body having a wall, said apparatus comprising form means having a surface corresponding to the configuration to which the body wall is to be shaped; mandrel means composed of deformable material and normally being spaced from said surface a distance at least sufficient to accommodate said body wall between said mandrel means and said surface; a plurality of relatively movable, telescoping members extending axially of said mandrel means; and at least on flange secured to each of said telescoping members and extending radially into said deformable material, said flanges being spaced axially From one another and being operable to subject discrete portions of said mandrel means to compressive forces in response to relative axial movement of said telescoping members for deforming said portions of said mandrel means toward said surface.
Claim 6
Dependent Claim
20 words
The apparatus set forth is claim 3 wherein said form means and said mandrel means are annular in cross section.
Claim 7
Dependent Claim
18 words
The apparatus set forth in claim 3 wherein said mandrel means is radially inwardly of said form means.
Claim 8
Dependent Claim
17 words
The apparatus set forth in claim 3 wherein said deformable material comprises a substantially incompressible, rubberlike substance.
Claim 9
Dependent Claim
24 words
The apparatus set forth in claim 3 wherein each of said telescoping members projects a different distance from one end of said deformable material.
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) | 1974-06-07 | 1974-12-07 | 1975-06-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-07 | 1978-12-07 | 1979-06-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-07 | 1982-12-07 | 1983-06-08 | $7700.00 | Window Closed / Lapsed |