US3234835A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyurethane stripper
Assignee: Industrial Tires Ltd
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Filing: 1964-04-17
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Granted: 1966-02-15
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Expires: 1984-04-17
Abstract
No abstract record available.
Inventors
- 👤 Archbold Edward Robert
- 👤 Carter Warren Hamilton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 21:08
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/08; C08G18/10; B; B21; B21D; B21D45/00; B21D45/003; B21D45/006; Y; Y10; Y10T; Y10T83/00; Y10T83/202; Y10T83/2092; Y10T83/2096; Y10T83/2135; Y10T83/215; Y10T83/2155; Y10T83/2157
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
138 words
A ONE-PIECE STRIPPER FOR STRIPPING A WORK-PIECE FROM A PUNCH OF A PUNCHING MACHINE WHEN THE PUNCH IS BEING WITHDRAWN FROM THE WORK-PIECE AND ADAPTABLE FOR USE WITH PUNCHES OF DIFFERENT SIZES, THE PUNCH HAVING A BODY PORTION AND A WORKING PORTION, COMPRISING AN ELONGATED, CYLINDRICAL SOLID BODY OF THERMOSETTING POLYURETHANE HAVING A HARDNESS OF BETWEEN ABOUT 50 SHORE A AND 75 SHORE D AND SELECTED FROM THE GROUP CONSISTING OF POLYESTER DIISOCYANATE REACTION PRODUCTS AND POLYETHER DIISOCYANATE REACTION PRODUCTS, A LONGITUDINAL CENTRAL OPENING OF CIRCULAR CROSS-SECTION IN SAID ELONGATED BODY THROUGH WHICH THE PUNCH CAN EXTEND, THE LONGITUDINAL OPENING BEING BETWEEN ABOUT 10/1000" AND 1/64" UNDERSIZE RELATIVE TO THE BODY PORTION OF THE PUNCH TO ALLOW THE STRIPPER TO BE HELD IN TIGHT FRICTIONAL ENGAGEMENT WITH SAID BODY PORTION, AN END WALL OF SUBSTANTIAL THICKNESS TERMINATING SAID
Claim 2
Dependent Claim
138 words
A ONE-PIECE STRIPPER FOR STRIPPING A WORK-PIECE FROM A PUNCH OF A PUNCHING MACHINE WHEN THE PUNCH IS BEING WITHDRAWN FROM THE WORK-PIECE AND ADAPTABLE FOR USE WITH PUNCHES OF DIFFERENT SIZES, THE PUNCH HAVING A BODY PORTION AND A WORKING PORTION, COMPRISING AN ELONGATED, CYLINDRICAL SOLID BODY OF THERMOSETTING POLYURETHANE HAVING A HARDNESS OF BETWEEN ABOUT 50 SHORE A AND 75 SHORE D AND SELECTED FROM THE GROUP CONSISTING OF POLYESTER DIISOCYANATE REACTION PRODUCTS AND POLYETHER DIISOCYANATE REACTION PRODUCTS, A LONGITUDINAL CENTRAL OPENING OF CIRCULAR CROSS-SECTION IN SAID ELONGATED BODY THROUGH WHICH THE PUNCH CAN EXTEND, THE LONGITUDINAL OPENING BEING BETWEEN ABOUT 10/1000" AND 1/64" UNDERSIZE RELATIVE TO THE BODY PORTION OF THE PUNCH TO ALLOW THE STRIPPER TO BE HELD IN TIGHT FRICTIONAL ENGAGEMENT WITH SAID BODY PORTION, AN END WALL OF SUBSTANTIAL THICKNESS TERMINATING SAID
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) | 1969-02-14 | 1969-08-16 | 1970-02-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-14 | 1973-08-16 | 1974-02-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-14 | 1977-08-16 | 1978-02-15 | $7700.00 | Window Closed / Lapsed |