Patent US3681994A successfully refreshed from Google Patents.
US3681994A
Expired / Lapsed
US
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Bend-shaping device
Assignee: Haemmerle AG Maschinenfabrik
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Filing: 1970-09-16
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Granted: 1972-08-08
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Expires: 1990-09-16
Abstract
Abstract A bend-shaping device with a movable ram and a work table in which a tool holder is fixed both on the ram and on the work table and in which the tool holder fixed to the table has a bottom-die with two working positions with which a first tool, fixed directly in the tool holder of the ram, and a second tool, displaceably connected to the tool holder, coact interchangeably. The tool holder of said second tool is mounted on the tool holder of said first tool displacebly from the interposed position into an inoperative position approximately in the direction of withdrawal, while in the interposed position the second tool lies in the actuation path of said first tool and is pressed by this against the bottom die.
Inventors
- 👤 Vaclav Zbornik
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 10:13
CPC Classifications
B; B21; B21D; B21D5/00; B21D5/02; B21D5/0209
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
156 words
Bend-shaping apparatus, comprising a work-table adapted to support a bottom-die having a first working position and at least one further working position, a ram moveable relative to said work-table, said ram being provided with a first tool-holder adapted to support a first tool moveable with the ram and actuable directly thereby to coact with the first working position of the bottom-die, and in which there is provided at least one secondary tool-holder mounted upon the first toolholder and displaceable between operative and inoperative positions, said secondary tool-holder being adapted to support a further tool moveable with the ram and, when said secondary toolholder is in its operative position, actuable indirectly thereby via a tool supported in said first tool-holder to coact with a further working position of said bottom-die, said secondary toolholder being displaceable from the operative to the inoperative position partly laterally but mainly by retraction in substantially the direction of movement of said ram.
Claim 2
Dependent Claim
156 words
Bend-shaping apparatus, comprising a work-table adapted to support a bottom-die having a first working position and at least one further working position, a ram moveable relative to said work-table, said ram being provided with a first tool-holder adapted to support a first tool moveable with the ram and actuable directly thereby to coact with the first working position of the bottom-die, and in which there is provided at least one secondary tool-holder mounted upon the first toolholder and displaceable between operative and inoperative positions, said secondary tool-holder being adapted to support a further tool moveable with the ram and, when said secondary toolholder is in its operative position, actuable indirectly thereby via a tool supported in said first tool-holder to coact with a further working position of said bottom-die, said secondary toolholder being displaceable from the operative to the inoperative position partly laterally but mainly by retraction in substantially the direction of movement of said ram.
Claim 3
Dependent Claim
82 words
Bend-shaping apparatus according to claim 1, in which the secondary tool-holder is mounted for pivotal movement about a pivot point fixedly mounted upon the first tool-holder, one end of the secondary tool-holder being adapted to support the further tool and the other end remote therefrom being interconnected with the first tool-holder via a double-acting piston-and-cylinder assembly so as to permit the further tool to be shifted laterally in and out of the operative position in the direction of movement of the ram.
Claim 4
Dependent Claim
50 words
Bend-shaping apparatus according to claim 2, in which the secondary tool-holder includes a pivotally-mounted piston-and-cylinder assembly disposed substantially parallel to the direction of movement of said ram, at one end adapted to support said further tool and at or adjacent the other end remote therefrom interconnected with said first tool-holder.
Claim 5
Dependent Claim
47 words
Bend-shaping apparatus according to claim 1, in which the secondary tool-holder is mounted laterally of and substantially parallel with the first tool-holder, and is bodily displaceable laterally relative to the first tool-holder by means of at least one double-acting piston-and-cylinder assembly via which it is mounted thereon.
Claim 6
Dependent Claim
49 words
Bend-shaping apparatus according to claim 4, in which said secondary tool-holder includes a piston-and-cylinder assembly disposed substantially parallel to the direction of movement of the ram, at one end adapted to support the further tool, anD thus permitting retraction thereof in substantially the direction of movement of the ram.
Claim 7
Dependent Claim
49 words
Bend-shaping apparatus according to claim 1, also incorporating a first tool supported in said first tool-holder and a further tool supported in said secondary tool-holder, the second tool having a cut-away portion forming a step against which, in the operative position of the second tool, abuts the first tool.
References Cited (Backward Citations)
US2936808A
Cited
US3509757A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-08-08 | 1976-02-07 | 1976-08-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-08 | 1980-02-07 | 1980-08-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-08 | 1984-02-07 | 1984-08-08 | $7700.00 | Window Closed / Lapsed |