US3351392A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Leader pin assembly for die sets
Assignee: Individual
•
Filing: 1966-01-19
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Granted: 1967-11-07
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Expires: 1986-01-19
Abstract
No abstract record available.
Inventors
- 👤 Daniel R Powell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 23:02
CPC Classifications
F; F16; F16C; F16C32/00; F16C32/06; F16C32/0629; F16C32/064; F16C32/0651; B; B21; B21D; B21D37/00; B21D37/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
153 words
A LEADER PIN ASSEMBLY FOR THE DIE SETS COMPRISING: (A) A LEADER PIN ELEMENT AND A COOPERATING TUBULAR GUIDE ELEMENT, (B) MEANS FOR SECURING SAID ELEMENT IN AXIAL ALIGNMENT EACH TO A DIFFERENT ONE OF A PAIR OF COOPERATING PUNCH AND DIE HOLDERS, (C) AN AXIALLY EXTENDED BEARING SLEEVE MOUNTED IN SAID GUIDE ELEMENT AND HAVING AN INNER CYLINDRICAL SURFACE FOR AXIAL SLIDING ENGAGEMENT WITH SAID PIN ELEMENT, (D) SAID BEARING SLEEVE HAVING A PLURALITY OF AXIALLY SPACED RADIALLY INWARDLY OPENING CIRCUMFERENTIAL GROOVES IN SAID INNER CYLINDRICAL SURFACE, (E) SAID GUIDE ELEMENT AND SLEEVE DEFINING FLUID PASSAGE MEANS COMMUNICATING WITH SAID GROOVES, (F) SAID PASSAGE MEANS INCLUDING AN INLET FOR RECEPTION OF LIQUID LUBRICANT UNDER PRESSUR AND AN OUTLET IN SPACED RELATION TO SAID INLET, (G) AND A PAIR OF ANNULAR SEALING RINGS MOUNTED IN SAID GUIDE ELEMENT ONE EACH AT AN OPPOSITE END OF SAID SLEEVE AND SNUGLY ENCOMPASSING SAID PIN ELEMENT.
Claim 2
Dependent Claim
153 words
A LEADER PIN ASSEMBLY FOR THE DIE SETS COMPRISING: (A) A LEADER PIN ELEMENT AND A COOPERATING TUBULAR GUIDE ELEMENT, (B) MEANS FOR SECURING SAID ELEMENT IN AXIAL ALIGNMENT EACH TO A DIFFERENT ONE OF A PAIR OF COOPERATING PUNCH AND DIE HOLDERS, (C) AN AXIALLY EXTENDED BEARING SLEEVE MOUNTED IN SAID GUIDE ELEMENT AND HAVING AN INNER CYLINDRICAL SURFACE FOR AXIAL SLIDING ENGAGEMENT WITH SAID PIN ELEMENT, (D) SAID BEARING SLEEVE HAVING A PLURALITY OF AXIALLY SPACED RADIALLY INWARDLY OPENING CIRCUMFERENTIAL GROOVES IN SAID INNER CYLINDRICAL SURFACE, (E) SAID GUIDE ELEMENT AND SLEEVE DEFINING FLUID PASSAGE MEANS COMMUNICATING WITH SAID GROOVES, (F) SAID PASSAGE MEANS INCLUDING AN INLET FOR RECEPTION OF LIQUID LUBRICANT UNDER PRESSUR AND AN OUTLET IN SPACED RELATION TO SAID INLET, (G) AND A PAIR OF ANNULAR SEALING RINGS MOUNTED IN SAID GUIDE ELEMENT ONE EACH AT AN OPPOSITE END OF SAID SLEEVE AND SNUGLY ENCOMPASSING SAID PIN ELEMENT.
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) | 1970-11-06 | 1971-05-08 | 1971-11-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-11-06 | 1975-05-08 | 1975-11-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-11-06 | 1979-05-08 | 1979-11-07 | $7700.00 | Window Closed / Lapsed |