US3270355A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of forming a press nut having a shrouded spigot
Assignee: Precision Screw and Manufacturing Co Ltd
•
Filing: 1964-01-21
•
Granted: 1966-09-06
•
Expires: 1984-01-21
Abstract
No abstract record available.
Inventors
- 👤 John Matthew Tildesley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 18:54
CPC Classifications
C; C21; C21C; C21C7/00; C21C7/10; B; B21; B21K; B21K1/00; B21K1/64; B21K1/70; B21K1/702; F; F16; F16B; F16B37/00; F16B37/04; F16B37/06; F16B37/062; F16B37/068; Y; Y10; Y10S; Y10S411/00; Y10S411/955; Y10S411/965; Y10S411/968; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49833; Y10T29/49908; Y10T29/49915; Y10T29/49925; Y10T29/49934
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
94 words
A METHOD OF MAKING A PRESS-NUT COMPRISING A HEXAGONAL FLANGE HAVING SIX FLAT EDGE PORTIONS AND SIX APICES AND A SPIGOT, WHICH COMPRISES INDENTING SAID FLAT EDGE PORTIONS OF THE FLANGE BY MEANS OF A CHISEL-LIKE TOOL AT POSITIONS LOCATED NEARER THE FACE OF THE FLANGE FROM WHICH SAID SPIGOT PROJECTS THAN THE OPPOSITE FACE AND OVER SUBSTANTIALLY THE ENTIRE CIRCUMFERENTIAL LENGTH OF EACH EDGE PORTION SHORT OF SAID APICES, SAID INDENTING SPLITTING THE FLANGE INTO TWO LAMINAE OF WHICH THE THINNER IS DEFORMED TO SHROUD THE SPIGOT AND THE THICKER REMAINS SUBSTANTIALLY UNDEFORMED.
Claim 2
Independent Claim
94 words
A METHOD OF MAKING A PRESS-NUT COMPRISING A HEXAGONAL FLANGE HAVING SIX FLAT EDGE PORTIONS AND SIX APICES AND A SPIGOT, WHICH COMPRISES INDENTING SAID FLAT EDGE PORTIONS OF THE FLANGE BY MEANS OF A CHISEL-LIKE TOOL AT POSITIONS LOCATED NEARER THE FACE OF THE FLANGE FROM WHICH SAID SPIGOT PROJECTS THAN THE OPPOSITE FACE AND OVER SUBSTANTIALLY THE ENTIRE CIRCUMFERENTIAL LENGTH OF EACH EDGE PORTION SHORT OF SAID APICES, SAID INDENTING SPLITTING THE FLANGE INTO TWO LAMINAE OF WHICH THE THINNER IS DEFORMED TO SHROUD THE SPIGOT AND THE THICKER REMAINS SUBSTANTIALLY UNDEFORMED.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-09-05 | 1970-03-07 | 1970-09-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-05 | 1974-03-07 | 1974-09-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-05 | 1978-03-07 | 1978-09-06 | $7700.00 | Window Closed / Lapsed |