US3837210A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process and machine for swaging rectangular-section workpieces
Assignee: Individual
•
Filing: 1973-04-13
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Granted: 1974-09-24
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Expires: 1993-04-13
Abstract
Abstract The workpiece is swaged by first and second pairs of dies, which are angularly spaced 90* apart and caused to blow in alternation on the workpiece. The dies of the first pair are caused to blow on the workpiece. The dies of the second pair are subsequently caused to blow on the workpiece. The dies of the first pair are caused to remain in contact with the workpiece until the dies of the second pair are in contact with the workpiece.
Inventors
- 👤 B Kralowetz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 11:46
CPC Classifications
B; B21; B21D; B21D7/00; B21D7/14; B21J; B21J7/00; B21J7/02; B21J7/14; B30; B30B; B30B1/00; B30B1/26; B30B7/00; B30B7/04
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
111 words
A process of swaging a workpiece of rectangular cross section by means of first and second pairs of associated dies, the first pair of associated dies being angularly spaced 90* from the second pair of associated dies and each pair of dies being caused to blow alternately on the workpiece, which process comprises 1. causing the associated dies of the first pair to blow on the workpiece, 2. subsequently causing the associated dies of the second pair to blow on the workpiece, and 3. causing the dies of the first pair to remain in contact with the workpiece until the dies of the second pair are in contact with the workpiece.
Claim 2
Dependent Claim
111 words
A process of swaging a workpiece of rectangular cross section by means of first and second pairs of associated dies, the first pair of associated dies being angularly spaced 90* from the second pair of associated dies and each pair of dies being caused to blow alternately on the workpiece, which process comprises 1. causing the associated dies of the first pair to blow on the workpiece, 2. subsequently causing the associated dies of the second pair to blow on the workpiece, and 3. causing the dies of the first pair to remain in contact with the workpiece until the dies of the second pair are in contact with the workpiece.
Claim 3
Dependent Claim
15 words
subsequently causing the associated dies of the second pair to blow on the workpiece, and
Claim 4
Dependent Claim
15 words
subsequently causing the associated dies of the second pair to blow on the workpiece, and
Claim 5
Dependent Claim
36 words
A process as set forth in claim 1, in which the dies of the first pair are caused to be disengaged from the workpiece before the dies of said second pair are disengaged from the workpiece.
Claim 6
Dependent Claim
118 words
drive means comprising eccentrics operatively connected to respective ones of the dies for operating the pairs of associated dies a. the eccentrics operatively connected to the dies of the first pair being displaced out of phase by an angle which is larger than zero and smaller than 180* from the eccentrics operatively connected to the dies of the second pair, the angular phase displacement causing the associated dies of the first pair first to blow on the workpiece, the associated dies of the second pair subsequently to blow on the workpiece, and the dies of the first pair to remain in contact with the workpiece until the dies of the second pair are in contact with the workpiece.
Claim 7
Dependent Claim
118 words
drive means comprising eccentrics operatively connected to respective ones of the dies for operating the pairs of associated dies a. the eccentrics operatively connected to the dies of the first pair being displaced out of phase by an angle which is larger than zero and smaller than 180* from the eccentrics operatively connected to the dies of the second pair, the angular phase displacement causing the associated dies of the first pair first to blow on the workpiece, the associated dies of the second pair subsequently to blow on the workpiece, and the dies of the first pair to remain in contact with the workpiece until the dies of the second pair are in contact with the workpiece.
Claim 8
Dependent Claim
12 words
A machine for swaging a workpiece of rectangular cross section, which comprises
Claim 9
Dependent Claim
12 words
A machine for swaging a workpiece of rectangular cross section, which comprises
Claim 10
Dependent Claim
27 words
causing the dies of the first pair to remain in contact with the workpiece until the dies of the second pair are in contact with the workpiece.
Claim 11
Dependent Claim
27 words
causing the dies of the first pair to remain in contact with the workpiece until the dies of the second pair are in contact with the workpiece.
Claim 12
Dependent Claim
18 words
A swaging machine as set forth in claim 3, in which said angle is between 20* and 80*.
Claim 13
Dependent Claim
17 words
A swaging machine as set forth in claim 3, in which said angle is smaller than 30*.
Claim 14
Dependent Claim
82 words
A swaging machine as set forth in claim 3, in which said workpiece is longitudinally movable along a predetermined path, and comprising connecting rods each of which is operatively connected to a respective one of the eccentrics and has a free end carrying a respective one of the dies, each die comprises a protruding impact bar which extends transversely to said path, and the impact bars of adjacent dies are staggered in relation to each other in the direction of the path.
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) | 1977-09-23 | 1978-03-25 | 1978-09-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-09-23 | 1982-03-25 | 1982-09-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-09-23 | 1986-03-25 | 1986-09-24 | $7700.00 | Window Closed / Lapsed |