US3236141A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Screw
Assignee: Individual
•
Filing: 1963-11-05
•
Granted: 1966-02-22
•
Expires: 1983-11-05
Abstract
No abstract record available.
Inventors
- 👤 Robert D Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 02:15
CPC Classifications
F; F16; F16B; F16B23/00; F16B23/0007; Y; Y10; Y10S; Y10S411/00; Y10S411/919
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
135 words
IN A THREADED FASTENER THE COMBINATION OF A SHANK HAVING A THREADED PORTION, A HEAD AT ONE END OF SAID SHANK SAID HEAD HAVING AN UPPER SIDE AND A PERIPHERAL EDGE, SAID UPPER SIDE HAVING A SLOT FOR ENGAGEMENT BY A SCREW DRIVER, SAID SLOT BEING OF H-SHAPED CONFIGURATION HAVING TWO PARALLEL SPACED APART SLOT ELEMENTS WHICH ARE CONNECTED TOGETHER AT THEIR MID-PARTS BY A TRANSVERSE CROSS-SLOT ELEMENT, EACH OF SAID SLOT ELEMENTS TERMINATING WITHIN SAID PERIPHERAL EDGE, SAID PARALLEL SPACED APART SLOT ELEMENTS HAVING END WALLS GENERALLY PERPENDICULARLY TO SAID UPPER SIDE, EACH OF SAID SLOT ELEMENTS AND SAID CROSS SLOT ELEMENT BEING OF STRAIGHT CONFIGURATION THROUGHOUT THEIR LENGTHS, AND HAVING VERTICAL OPPOSITE SIDE WALLS AND A FLAT BOTTOM WALL, SAID CROSS SLOT ELEMENT BEING AT 90* RESPECTIVE TO EACH OF SAID SLOT ELEMENTS.
Claim 2
Dependent Claim
135 words
IN A THREADED FASTENER THE COMBINATION OF A SHANK HAVING A THREADED PORTION, A HEAD AT ONE END OF SAID SHANK SAID HEAD HAVING AN UPPER SIDE AND A PERIPHERAL EDGE, SAID UPPER SIDE HAVING A SLOT FOR ENGAGEMENT BY A SCREW DRIVER, SAID SLOT BEING OF H-SHAPED CONFIGURATION HAVING TWO PARALLEL SPACED APART SLOT ELEMENTS WHICH ARE CONNECTED TOGETHER AT THEIR MID-PARTS BY A TRANSVERSE CROSS-SLOT ELEMENT, EACH OF SAID SLOT ELEMENTS TERMINATING WITHIN SAID PERIPHERAL EDGE, SAID PARALLEL SPACED APART SLOT ELEMENTS HAVING END WALLS GENERALLY PERPENDICULARLY TO SAID UPPER SIDE, EACH OF SAID SLOT ELEMENTS AND SAID CROSS SLOT ELEMENT BEING OF STRAIGHT CONFIGURATION THROUGHOUT THEIR LENGTHS, AND HAVING VERTICAL OPPOSITE SIDE WALLS AND A FLAT BOTTOM WALL, SAID CROSS SLOT ELEMENT BEING AT 90* RESPECTIVE TO EACH OF SAID SLOT ELEMENTS.
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) | 1969-02-21 | 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 |