US3773456A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for the production of flaring portions of hollow bodies
Assignee: Dynamit Nobel AG
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Filing: 1971-07-19
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Granted: 1973-11-20
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Expires: 1991-07-19
Abstract
Abstract An apparatus for forming socket and bead configurations in tubular bodies including a divided external mold, an expanding mandrel having two parts between which a sizing ring is provided. The sizing ring is rotatably mounted on a slide element supported in a rotatable guide member. By setting the guide member into rotation the sizing ring scribes a circular path about the central axis of the expanding mandrel. A radial-displacing cylinder is provided for shifting the slide element and thus sizing ring 3 in the radial direction. Also disclosed is the method resulting from the use of the above apparatus.
Inventors
- 👤 R Salz
- 👤 J Karp
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 06:57
CPC Classifications
B; B29; B29C; B29C57/00; B29C57/02; B29C57/04; B29C57/045
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
87 words
An apparatus for expanding a hollow body comprising an external mold means for containing said hollow body, an expanding mandrel means for shaping said hollow body receivable within said external mold means, said expanding mandrel means being divided into two parts, sizing ring means for expanding a portion of said hollow body being receivably rotatable between the two parts, and displacing means connected to said expanding mandrel means for moving the same into and out of said external mold means and for engagement with said hollow body.
Claim 2
Independent Claim
87 words
An apparatus for expanding a hollow body comprising an external mold means for containing said hollow body, an expanding mandrel means for shaping said hollow body receivable within said external mold means, said expanding mandrel means being divided into two parts, sizing ring means for expanding a portion of said hollow body being receivably rotatable between the two parts, and displacing means connected to said expanding mandrel means for moving the same into and out of said external mold means and for engagement with said hollow body.
Claim 3
Dependent Claim
55 words
An apparatus according to claim 1 further comprising means for rotating said sizing ring and means for displacing said sizing ring means in the radial direction so that said sizing ring can be rotatably and radially advanced into contact with the inner wall of said hollow body to cause the expansion of the contacted portion.
Claim 4
Dependent Claim
20 words
The apparatus according to claim 2 wherein heat exchange means are additionally provided for heating and cooling said hollow body.
Claim 5
Independent Claim
101 words
An apparatus for radially expanding portions of a tubular body comprising an external mold means for axially receiving said tubular body, expanding mandrel means axially-disposable within said external mold means and adapted to contact and shape at least an axial portion of said tubular body, said expanding mandrel means being divided into a first section and a second section, sizing ring means for radially expanding a portion of said tubular body by rolling contact therewith, said sizing ring means being receivable between said first and second sections of said expanding mandrel means, and displacement means for axially-displacing said expanding mandrel means.
Claim 6
Independent Claim
101 words
An apparatus for radially expanding portions of a tubular body comprising an external mold means for axially receiving said tubular body, expanding mandrel means axially-disposable within said external mold means and adapted to contact and shape at least an axial portion of said tubular body, said expanding mandrel means being divided into a first section and a second section, sizing ring means for radially expanding a portion of said tubular body by rolling contact therewith, said sizing ring means being receivable between said first and second sections of said expanding mandrel means, and displacement means for axially-displacing said expanding mandrel means.
Claim 7
Dependent Claim
74 words
An apparatus according to claim 4 wherein said apparatus further comprises guide means rotatable with respect to the axis of said expanding mandrel means, slide means settable in rotation with said guide means and radially movable with respect thereto, said slide means rotatably received within said second section of said expanding mandrel means, means for radially moving said slide means connected thereto, and said sizing ring means being rotatably mounted on said slide means.
Claim 8
Dependent Claim
44 words
An apparatus according to claim 5 further comprising motor means connected to said guide means for setting the same into rotation, and wherein said expanding mandrel means is rotatably connected with respect to said guide means and said displacement means engages said guide means.
Claim 9
Independent Claim
132 words
An apparatus for widening a hollow body comprising an external mold means for supporting said hollow body, a mandrel means receivable within said external mold means and having first and second portions, sizing ring means receivably rotatable between said first and second portions, guide means adapted to rotate said sizing ring means, slide means rotatably attached with respect to said sizing ring at one end thereof and at the other end mounted on said guide means for radial displacement with respect thereto, displacement means engaging said slide means for effecting radial displacement thereof, drive means for setting said guide means into rotation whereby the outer edge of said sizing ring means can be moved radially-outward until a circle of predetermined radius is scribed about the axis of rotation of said guide means.
Claim 10
Independent Claim
132 words
An apparatus for widening a hollow body comprising an external mold means for supporting said hollow body, a mandrel means receivable within said external mold means and having first and second portions, sizing ring means receivably rotatable between said first and second portions, guide means adapted to rotate said sizing ring means, slide means rotatably attached with respect to said sizing ring at one end thereof and at the other end mounted on said guide means for radial displacement with respect thereto, displacement means engaging said slide means for effecting radial displacement thereof, drive means for setting said guide means into rotation whereby the outer edge of said sizing ring means can be moved radially-outward until a circle of predetermined radius is scribed about the axis of rotation of said guide means.
Claim 11
Dependent Claim
27 words
An apparatus according to claim 7 wherein said mandrel means is an expanding mandrel means and wherein said external mold means is a divided external mold means.
Claim 12
Dependent Claim
21 words
An apparatus according to claim 7 wherein the central axis of said mandrel means coincides with that of said guide means.
Claim 13
Dependent Claim
27 words
An apparatus according to claim 7 further comprising displacing means operably connected to said guide means for jointly, axially displacing said sizing ring, slide and guide means.
Claim 14
Dependent Claim
34 words
An apparatus according to claim 7 wherein said external mold means includes insert means for securing said hollow body and channel means adapted to permit the circulation of a heating or cooling fluid therethrough.
Claim 15
Dependent Claim
40 words
An apparatus according to claim 8 wherein said expanding mandrel means exhibits an external configuration corresponding to the resultant internal configuration of the hollow body and is provided with channel means permitting the circulation of heating or cooling fluids therethrough.
Claim 16
Dependent Claim
25 words
An apparatus according to claim 8 wherein said sizing ring means has an external configuration corresponding to the internal configuration of the bead formed thereby.
Claim 17
Dependent Claim
24 words
An apparatus according to claim 8 wherein said slide means is radially displaceable by said displacement means until abutment against an adjustable stop means.
Claim 18
Dependent Claim
20 words
An apparatus according to claim 8 wherein the second portion of said mandrel is rotatably supported by said guide means.
Claim 19
Dependent Claim
34 words
An apparatus according to claim 4, further comprising heat exchange means for heating and cooling said hollow body, said heat exchange means being disposed adjacent to the radially expanding portions of the tubular body.
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) | 1976-11-19 | 1977-05-21 | 1977-11-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-11-19 | 1981-05-21 | 1981-11-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-11-19 | 1985-05-21 | 1985-11-20 | $7700.00 | Window Closed / Lapsed |