US3183571A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Perforating machine for clay drain tile
Assignee: National City Bank
•
Filing: 1963-05-03
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Granted: 1965-05-18
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Expires: 1983-05-03
Abstract
No abstract record available.
Inventors
- 👤 John D Schmunk
- 👤 Hall E Gilliland
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 14:10
CPC Classifications
B; B28; B28B; B28B21/00; B28B21/92; Y; Y10; Y10S; Y10S425/00; Y10S425/037
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
150 words
A MACHINE FOR PERFORATING A CONTINUOUS TUBULAR COLUMN OF PLASTIC MATERIAL AS IT ADVANCES FROM THE EXTRUDER, SAID MACHINE COMPRISING AN ELONGATE TUBULAR MANDREL ADAPTED TO FIT WITHIN THE PLASTIC COLUMN, A STATIONARY ROD WITHIN THE PLASTIC COLUMN ALONG WHICH THE MANDREL TRAVELS, A CUSHIONING COVERING FOR SAID MANDREL, A MANDREL ACTUATING SPRING MOUNTED ON SAID STATIONARY ROD AND ENGAGING SAID MANDREL SO AS TO BE COMPRESSED UPON MOVEMENT OF SAID MANDREL WITH SAID PLASTIC COLUMN, A RECTILINEARLY MOVABLE DOLLY ON THE OUTSIDE OF THE PLASTIC COLUMN, A MOUNTING FOR THE DOLLY ENABLING TO AND FRO SHIFTING MOVEMENT THEREOF IN A PLANE PARALLEL TO THE ADVANCING MOVEMENT OF THE PLASTIC COLUMN, PERFORATING PUNCHES ON THE DOLLY, MEANS TO ACTUATE SAID PUNCHES SO THAT THEY EXTEND THROUGH THE WALLS OF THE COLUMN AND AGAINST THE CUSHIONING COVERING FOR THE MANDREL, WHEREBY BOTH THE DOLLY AND MANDREL ARE THUS CONNECTED AND AD-
Claim 2
Dependent Claim
150 words
A MACHINE FOR PERFORATING A CONTINUOUS TUBULAR COLUMN OF PLASTIC MATERIAL AS IT ADVANCES FROM THE EXTRUDER, SAID MACHINE COMPRISING AN ELONGATE TUBULAR MANDREL ADAPTED TO FIT WITHIN THE PLASTIC COLUMN, A STATIONARY ROD WITHIN THE PLASTIC COLUMN ALONG WHICH THE MANDREL TRAVELS, A CUSHIONING COVERING FOR SAID MANDREL, A MANDREL ACTUATING SPRING MOUNTED ON SAID STATIONARY ROD AND ENGAGING SAID MANDREL SO AS TO BE COMPRESSED UPON MOVEMENT OF SAID MANDREL WITH SAID PLASTIC COLUMN, A RECTILINEARLY MOVABLE DOLLY ON THE OUTSIDE OF THE PLASTIC COLUMN, A MOUNTING FOR THE DOLLY ENABLING TO AND FRO SHIFTING MOVEMENT THEREOF IN A PLANE PARALLEL TO THE ADVANCING MOVEMENT OF THE PLASTIC COLUMN, PERFORATING PUNCHES ON THE DOLLY, MEANS TO ACTUATE SAID PUNCHES SO THAT THEY EXTEND THROUGH THE WALLS OF THE COLUMN AND AGAINST THE CUSHIONING COVERING FOR THE MANDREL, WHEREBY BOTH THE DOLLY AND MANDREL ARE THUS CONNECTED AND AD-
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) | 1968-05-17 | 1968-11-16 | 1969-05-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-05-17 | 1972-11-16 | 1973-05-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-05-17 | 1976-11-16 | 1977-05-18 | $7700.00 | Window Closed / Lapsed |