US3236130A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for continuous pneumatic punching
Assignee: LADISLAS RADO
•
Filing: 1963-06-24
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Granted: 1966-02-22
•
Expires: 1983-06-24
Abstract
No abstract record available.
Inventors
- 👤 Robert Michel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 17:32
CPC Classifications
B; B26; B26F; B26F1/00; B26F1/02; B21; B21D; B21D28/00; B21D28/002; B21D28/02; B26D; B26D5/00; B26D5/08; B26D5/12; B26D7/00; B26D7/18; B26D7/1845; B26D7/1854; B26F1/38; B26F1/40; Y; Y10; Y10T; Y10T83/00; Y10T83/202; Y10T83/2066; Y10T83/869; Y10T83/8752; Y10T83/8755; Y10T83/8756; Y10T83/8821; Y10T83/8858
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
148 words
PUNCHING APPARATUS COMPRISING IN COMBINATION TWO AXIALLY ALIGNED MEMBERS FOR PERFORATING SHEET MATERIAL POSITIONED THEREBETWEEN, A PISTON CONNECTED TO MOVE ONE OF SAID MEMBERS TOWARD AND AWAY FROM THE OTHER, A PRESSURE CHAMBER IN WHICH SAID PISTON IS SLIDABLY MOUNTED, FIRST RESILIENT MEANS BIASING SAID PISTON AND ONE MEMBER AWAY FROM THE OTHER MEMBER, VALVE MEANS CONTROLLING THE ADMISSION OF PRESSURE FLUID TO SAID CHAMBER TO DRIVE SAID PISTON AND ONE MEMBER TOWARD THE OTHER MEMBER, SAID VALVE MEANS COMPRISING A VALVE MEMBER URGED TOWARD ITS CLOSED POSITION BY THE PRESSURE OF FLUID TRAVELLING TOWARD SAID CHAMBER, A STRIKER, SECOND RESILIENT MEANS FOR BIASSING SAID STRIKER AGAINST SAID VALVE MEMBER IN A DIRECTION URGING SAID VALVE MEMBER INTO ITS OPEN POSITION, MECHANICALLY DRIVEN MEANS WHICH ALTERNATELY COMPRESS SAID SECOND RESILIENT MEANS TO ELIMINATE VALVE OPENING PRESSURE ON SAID STRIKER AND VALVE MEMBER AND SUDDENLY RELEASES SAID COMPRESSED RESILIENT
Claim 2
Dependent Claim
148 words
PUNCHING APPARATUS COMPRISING IN COMBINATION TWO AXIALLY ALIGNED MEMBERS FOR PERFORATING SHEET MATERIAL POSITIONED THEREBETWEEN, A PISTON CONNECTED TO MOVE ONE OF SAID MEMBERS TOWARD AND AWAY FROM THE OTHER, A PRESSURE CHAMBER IN WHICH SAID PISTON IS SLIDABLY MOUNTED, FIRST RESILIENT MEANS BIASING SAID PISTON AND ONE MEMBER AWAY FROM THE OTHER MEMBER, VALVE MEANS CONTROLLING THE ADMISSION OF PRESSURE FLUID TO SAID CHAMBER TO DRIVE SAID PISTON AND ONE MEMBER TOWARD THE OTHER MEMBER, SAID VALVE MEANS COMPRISING A VALVE MEMBER URGED TOWARD ITS CLOSED POSITION BY THE PRESSURE OF FLUID TRAVELLING TOWARD SAID CHAMBER, A STRIKER, SECOND RESILIENT MEANS FOR BIASSING SAID STRIKER AGAINST SAID VALVE MEMBER IN A DIRECTION URGING SAID VALVE MEMBER INTO ITS OPEN POSITION, MECHANICALLY DRIVEN MEANS WHICH ALTERNATELY COMPRESS SAID SECOND RESILIENT MEANS TO ELIMINATE VALVE OPENING PRESSURE ON SAID STRIKER AND VALVE MEMBER AND SUDDENLY RELEASES SAID COMPRESSED RESILIENT
References Cited (Backward Citations)
US2251135A
Cited
US2482539A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-02-21 | 1969-08-23 | 1970-02-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-21 | 1973-08-23 | 1974-02-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-21 | 1977-08-23 | 1978-02-22 | $7700.00 | Window Closed / Lapsed |