US4212243A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Installation for the stamping of advancing rolling stock in rolling mills and continuous casting plants
Assignee: Individual
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Filing: 1978-05-08
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Granted: 1980-07-15
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Expires: 1998-05-08
Abstract
Abstract The invention comprises an installation for continuously stamping advancing rolling stock and the like. A pair of cylinders are positioned having their bottom ends facing each other and their top ends extending in substantially opposite directions. Each of the cylinders has a piston movable therein and a piston rod connected thereto. The piston rod of the first of the cylinders is connected to a stamping pendulum, having a stamping die thereon; whereas, the piston rod of the second cylinders is connected to a stationary point. The first cylinder has at the top end thereof a stationary intermediate piece with a passage for the piston rod provided therein. The passage has an internal diameter exceeding the external diameter of the piston rod and a projection located on the piston at the side of the intermediate piece. The projection follows the motion of the piston and sealingly engages the passage during the extension of the piston.
Inventors
- 👤 Helmut Haegermann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 09:48
CPC Classifications
B; B22; B22D; B22D45/00; B22D11/00; B22D11/12; B22D11/1233; B44; B44B; B44B5/00; B44B5/0004; B44B5/0033; B44B5/0061
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
373 words
A device for stamping with a die workpieces which advance along a path, the device utilizing a source of compressed air including sources of both normal and reduced pressures the device comprising: (a) a pendulum arm for carrying the die adjacent one end thereof; (b) a cylinder arrangement including a cylinder, a piston having one side and another side, and a piston rod coupled with said piston and extending from said other side thereof, said pendulum arm being swingable by said piston rod between an operating position in which the die will be in the path of an advancing workpiece and a non-operating position in which the die will be out of the path of the advancing workpiece, said piston rod being in a run out position when said pendulum is in said operating position, said piston being in a run out position when said pendulum is in said non-operating position; (c) an intermediate piece defining chambers on either side of said intermediate piece, one chamber being disposed generally to said one side of said piston when said pendulum is in the operating position and being disposed to one side of said intermediate piece; the other chamber being disposed to the other side of said intermediate piece; (d) means for effecting communication between said one chamber and the source of reduced pressure; (e) means for establishing communication between said other chamber and the source of normal pressure; (f) a projection on said other side of said piston; (g) a passage through said intermediate piece, said passage and said projection being arranged and configured for mutual sealing cooperation to block said passage when said piston rod is in said run out position and to selectively establish communication between said other chamber and a part of said one chamber on said other side of said piston when said projection and said passage are out of sealing cooperation, whereby a counterforce resulting from the reduced pressure acting on said piston exceeds a pendulum withdrawing force resulting from the normal pressure acting on said shoulder member when said projection and said passage are in sealing cooperation with each other and the pendulum withdrawing force exceeds the counterforce when the projection and passage are out of sealing cooperation.
Claim 2
Independent Claim
373 words
A device for stamping with a die workpieces which advance along a path, the device utilizing a source of compressed air including sources of both normal and reduced pressures the device comprising: (a) a pendulum arm for carrying the die adjacent one end thereof; (b) a cylinder arrangement including a cylinder, a piston having one side and another side, and a piston rod coupled with said piston and extending from said other side thereof, said pendulum arm being swingable by said piston rod between an operating position in which the die will be in the path of an advancing workpiece and a non-operating position in which the die will be out of the path of the advancing workpiece, said piston rod being in a run out position when said pendulum is in said operating position, said piston being in a run out position when said pendulum is in said non-operating position; (c) an intermediate piece defining chambers on either side of said intermediate piece, one chamber being disposed generally to said one side of said piston when said pendulum is in the operating position and being disposed to one side of said intermediate piece; the other chamber being disposed to the other side of said intermediate piece; (d) means for effecting communication between said one chamber and the source of reduced pressure; (e) means for establishing communication between said other chamber and the source of normal pressure; (f) a projection on said other side of said piston; (g) a passage through said intermediate piece, said passage and said projection being arranged and configured for mutual sealing cooperation to block said passage when said piston rod is in said run out position and to selectively establish communication between said other chamber and a part of said one chamber on said other side of said piston when said projection and said passage are out of sealing cooperation, whereby a counterforce resulting from the reduced pressure acting on said piston exceeds a pendulum withdrawing force resulting from the normal pressure acting on said shoulder member when said projection and said passage are in sealing cooperation with each other and the pendulum withdrawing force exceeds the counterforce when the projection and passage are out of sealing cooperation.
Claim 3
Dependent Claim
171 words
A device according to claim 1 wherein said cylinder arrangement is a first cylinder arrangement and said cylinder is a first cylinder, the device further comprising: (a) a second cylinder arrangement including a second cylinder, a second piston in said second cylinder, and a second piston rod coupled with said second piston, said second piston partially defining a pair of second cylinder chambers on either side thereof, said first and second cylinders being axially aligned and connected together at a connection region, said second cylinder having one closed end adjacent said connection region and facing toward said first cylinder and another end facing away from said connection region, said second piston rod protruding from said other end of said second cylinder, said second piston rod including means for effecting a pivotal connection by which said first and second connected cylinder arrangements are pivotally anchored in place, and (b) means for alternately introducing normal pressure from the source of normal pressure into, respectively, each cylinder of the pair of second cylinder chambers.
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) | 1983-07-15 | 1984-01-14 | 1984-07-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-07-15 | 1988-01-14 | 1988-07-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-07-15 | 1992-01-14 | 1992-07-15 | $7700.00 | Window Closed / Lapsed |