US3140636A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Twelve-point nut
Assignee: KAYNAR Manufacturing CO Inc
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Filing: 1962-09-20
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Granted: 1964-07-14
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Expires: 1982-09-20
Abstract
No abstract record available.
Inventors
- 👤 David W Grimm
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:04
CPC Classifications
F; F16; F16B; F16B23/00; F16B23/0007; F16B23/003
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
170 words
A HIGH TENSILE STRENGTH LIGHTWEIGHT LOCK-NUT COMPRISING: AN INTERNALLY THREADED ANNULUS HAVING A MAIN BODY PORTION WITH AN OUTER WALL CONFIGURATION IN THE FORM OF A REGULAR POLYGON HAVING TWELVE OUTWARDLY EXTENDING POINTS OF A SIZE TO BE ENGAGED BY STANDARD SIZE WRENCH MEANS OF A SIZE LESS THAN USUAL FOR THE SIZE THREAD INVOLVED, THE CONTIGUOUS WALL SURFACES BETWEEN TWO SUCCESSIVE OUTWARDLY EXTENDING POINTS BEING AT LEAST IN PART SUBSTANTIALLY FLAT AND LYING IN PLANES INTERSECTING AT AN ANGLE OF ABOUT 130 DEGREES TO 138 DEGREES, THE WALL OF THE NUT AT THE INTERSECTION OF SUCH CONTIGUOUS WALL SURFACES HAVING A POSITIVE BUT MINIMUM RADIAL DIMENSION THROUGHOUT THE AXIAL EXTENT OF THE INTERSECTION OF THE WALL SURFACES, AS MEASURED TO THE BASE OF SAID THREADS, NOT GREATER THAN THE RADIAL DISTANCE BETWEEN THE BASE OF SAID THREADS AND A CONCENTRIC CIRCUMSCRIBING CIRCLE EQUAL IN RADIUS TO A CIRCLE INSCRIBED IN A REGULAR HEXAGON HAVING THE SAME MAJOR DIAGONAL DIMENSION ACROSS POINTS AS THE SAID REGULAR POLYGON WITH TWELVE POINTS.
Claim 2
Dependent Claim
170 words
A HIGH TENSILE STRENGTH LIGHTWEIGHT LOCK-NUT COMPRISING: AN INTERNALLY THREADED ANNULUS HAVING A MAIN BODY PORTION WITH AN OUTER WALL CONFIGURATION IN THE FORM OF A REGULAR POLYGON HAVING TWELVE OUTWARDLY EXTENDING POINTS OF A SIZE TO BE ENGAGED BY STANDARD SIZE WRENCH MEANS OF A SIZE LESS THAN USUAL FOR THE SIZE THREAD INVOLVED, THE CONTIGUOUS WALL SURFACES BETWEEN TWO SUCCESSIVE OUTWARDLY EXTENDING POINTS BEING AT LEAST IN PART SUBSTANTIALLY FLAT AND LYING IN PLANES INTERSECTING AT AN ANGLE OF ABOUT 130 DEGREES TO 138 DEGREES, THE WALL OF THE NUT AT THE INTERSECTION OF SUCH CONTIGUOUS WALL SURFACES HAVING A POSITIVE BUT MINIMUM RADIAL DIMENSION THROUGHOUT THE AXIAL EXTENT OF THE INTERSECTION OF THE WALL SURFACES, AS MEASURED TO THE BASE OF SAID THREADS, NOT GREATER THAN THE RADIAL DISTANCE BETWEEN THE BASE OF SAID THREADS AND A CONCENTRIC CIRCUMSCRIBING CIRCLE EQUAL IN RADIUS TO A CIRCLE INSCRIBED IN A REGULAR HEXAGON HAVING THE SAME MAJOR DIAGONAL DIMENSION ACROSS POINTS AS THE SAID REGULAR POLYGON WITH TWELVE POINTS.
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) | 1967-07-14 | 1968-01-13 | 1968-07-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-07-14 | 1972-01-13 | 1972-07-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-07-14 | 1976-01-13 | 1976-07-14 | $7700.00 | Window Closed / Lapsed |