US3393594A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hold-down arrangement for transfer dies
Assignee: Livernois Engineering Co
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Filing: 1966-07-08
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Granted: 1968-07-23
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Expires: 1986-07-08
Abstract
No abstract record available.
Inventors
- 👤 Bernard J Wallis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 03:16
CPC Classifications
B; B21; B21D; B21D43/00; B21D43/02; B21D43/04; B21D43/05; B21D43/055; Y; Y10; Y10T; Y10T83/00; Y10T83/444; Y10T83/4577; Y10T83/463; Y10T83/4632; Y10T83/566; Y10T83/5669; Y10T83/5742; Y10T83/5751; Y10T83/727; Y10T83/741; Y10T83/743
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
101 words
FOR USE IN A PUNCH PRESS OF THE TYPE HAVING A DIE WHICH INCLUDES A PLURALITY OF SUCCESSIVE STATIONS AND A TRANSFER MECHANISM FOR PROGRESSIVELY ADVANCING INDIVIDUAL WORKPIECE TO THE SUCCESSIVE STATIONS OF THE DIE UPON EACH RECIPROCATION OF THE PRESS RAM, THE TRANSFER MECHANISM BEING OF THE TYPE WHICH INCLUDES WORK-GRIPPING ELEMENTS WHICH ARE ADAPTED TO GRIP A WORKPIECE, ADVANCE IT TO THE NEXT SUCCESSIVE STATION AND THEN RELEASE THE WORKPIECE PRIOR TO THE RAM REACHING THE LOWER LIMIT OF ITS DOWN STROKE, MEANS FOR RETAINING THE WORKPIECE IN RELATIVELY FIXED POSITION WHILE IT IS BEING RELEASED BY THE WORK-GRIP-
Claim 2
Dependent Claim
101 words
FOR USE IN A PUNCH PRESS OF THE TYPE HAVING A DIE WHICH INCLUDES A PLURALITY OF SUCCESSIVE STATIONS AND A TRANSFER MECHANISM FOR PROGRESSIVELY ADVANCING INDIVIDUAL WORKPIECE TO THE SUCCESSIVE STATIONS OF THE DIE UPON EACH RECIPROCATION OF THE PRESS RAM, THE TRANSFER MECHANISM BEING OF THE TYPE WHICH INCLUDES WORK-GRIPPING ELEMENTS WHICH ARE ADAPTED TO GRIP A WORKPIECE, ADVANCE IT TO THE NEXT SUCCESSIVE STATION AND THEN RELEASE THE WORKPIECE PRIOR TO THE RAM REACHING THE LOWER LIMIT OF ITS DOWN STROKE, MEANS FOR RETAINING THE WORKPIECE IN RELATIVELY FIXED POSITION WHILE IT IS BEING RELEASED BY THE WORK-GRIP-
References Cited (Backward Citations)
US1778824A
Cited
US2929485A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-07-23 | 1972-01-22 | 1972-07-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-07-23 | 1976-01-22 | 1976-07-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-07-23 | 1980-01-22 | 1980-07-23 | $7700.00 | Window Closed / Lapsed |