US3823749A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bending machine for wire or strip
Assignee: EVG Entwicklungs und Verwertungs GmbH
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Filing: 1973-01-11
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Granted: 1974-07-16
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Expires: 1993-01-11
Abstract
Abstract The invention is concerned with a bending machine for wire or strip in which the raw material is advanced through the machine step by step and, between each step, a bend is made by a mobile bending tool. The bending tool is retractable from a working position on one side of the path of advance of the material, moveable to the other side of the path without intersecting the path and advancable into a working position on the other side of the path of the advance of the material, so that the tool may be used for bending the material selectively in either direction out of the path of the advance of the material.
Inventors
- 👤 W Boyer
- 👤 G Ritter
- 👤 K Ritter
- 👤 O Gamillscheg
- 👤 J Ritter
- 👤 H Gott
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 20:53
CPC Classifications
B; B21; B21F; B21F1/00; B21D; B21D11/00; B21D11/10; B21D11/12
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
147 words
A machine for bending wire or strip, said machine comprising means for intermittently advancing raw material for bending along a path, step by step, the length of each step being the desired distance between two successive bends, a stationary anvil, ane an intermittently driven mobile bending tool which bends said wire or strip through a desired angle around said anvil; an improved mounting for said bending tool comprising means for retracting said bendiNg tool from a working position on a selected one side of said path, means for moving said retracted bending tool to the other side of said path without intersecting said path, and means for advancing said bending tool to a working position on said other side of said path whereby said single bending tool is adapted to bend said wire or strip selectively in either of two opposite bending directions away from said path.
Claim 2
Dependent Claim
147 words
A machine for bending wire or strip, said machine comprising means for intermittently advancing raw material for bending along a path, step by step, the length of each step being the desired distance between two successive bends, a stationary anvil, ane an intermittently driven mobile bending tool which bends said wire or strip through a desired angle around said anvil; an improved mounting for said bending tool comprising means for retracting said bendiNg tool from a working position on a selected one side of said path, means for moving said retracted bending tool to the other side of said path without intersecting said path, and means for advancing said bending tool to a working position on said other side of said path whereby said single bending tool is adapted to bend said wire or strip selectively in either of two opposite bending directions away from said path.
Claim 3
Dependent Claim
45 words
A machine according to claim 1, wherein there are two stationary bending anvils positioned one on each side of said path, said bending tool co-operating selectively with one or other said two anvils for bending said wire or strip in one of two said directions.
Claim 4
Dependent Claim
41 words
A machine according to claim 2, wherein said two anvils are positioned symmetrically, one on each side of said path and said bending tool is mounted on a crank, there being means oscillating said crank about an axis intersecting said path.
Claim 5
Dependent Claim
30 words
A machine according to claim 3, wherein said crank has a shaft supporting said bending tool and an ejector rod for bent wire or strip slides independently within said shaft.
Claim 6
Dependent Claim
72 words
A machine according to claim 1, wherein a single bending anvil is provided for bending said wire or strip in both of said directions, said anvil having means retracting said anvil from a working position on one side of said path, means moving said anvil to said other side of said path without intersecting said path, and means advancing said anvil to a working position on said other side of said path.
Claim 7
Dependent Claim
71 words
A machine according to claim 5, wherein said anvil and said bending tool are both mounted on a common link, there being means pivotally mounting said common link about an axis intersecting said path for the purpose of shifting said anvil and said bending tool to alternate sides of said path, and means adapted to swing said link about said anvil after the manner of a crank for making a bend.
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) | 1977-07-15 | 1978-01-14 | 1978-07-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-07-15 | 1982-01-14 | 1982-07-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-07-15 | 1986-01-14 | 1986-07-16 | $7700.00 | Window Closed / Lapsed |