Patent EP0029985A1 successfully refreshed from Google Patents.
Patent US3557655A successfully refreshed from Google Patents.
US3557655A
Expired / Lapsed
US
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Extruded thread-cutting nut
Assignee: Keystone Consolidated Industries Inc
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Filing: 1969-07-03
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Granted: 1971-01-26
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Expires: 1989-07-03
Abstract
Abstract An extruded thread-cutting nut for the forming of threads on an unthreaded post or stud which is a one-piece nut having an extruded body provided with internal threads therein, a body flange integral with and positioned at one end of the extruded body, and a face flange parallel to and joined to the body flange by a short sidewall. The face flange is provided with a central aperture aligned with the nut body and incorporates therein a helical thread provided with one or more cutting edges. An unthreaded stud first engages the cutting edge and thread in the face flange to form the thread and then engages the interior threads of the nut body.
Inventors
- 👤 William H Coe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 09:13
CPC Classifications
F; F16; F16B; F16B37/00; F16B37/002
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
74 words
A one-piece thread-cutting nut comprising a nut body having a central threaded aperture therethrough, a body flange integral with and located at one end of the body, a face flange parallel to but spaced from said body flange and nut body, a sidewall joining said body flange and face flange, a generally central aperture in said face flange aligned with said aperture in the nut body, and thread-cutting means in said face flange aperture.
Claim 2
Dependent Claim
74 words
A one-piece thread-cutting nut comprising a nut body having a central threaded aperture therethrough, a body flange integral with and located at one end of the body, a face flange parallel to but spaced from said body flange and nut body, a sidewall joining said body flange and face flange, a generally central aperture in said face flange aligned with said aperture in the nut body, and thread-cutting means in said face flange aperture.
Claim 3
Dependent Claim
38 words
A one-piece thread-cutting nut as set forth in claim 1, in which said thread-cutting means includes at least one thread-cutting edge in said face flange aperture, and a helical thread in said aperture extending from the cutting edge.
Claim 4
Dependent Claim
28 words
A one-piece thread-cutting nut as set forth in claim 2, in which said cutting edge is formed by a notch in the periphery of the face flange aperture.
Claim 5
Dependent Claim
30 words
A one-piece thread-cutting nut as set forth in claim 3, in which the spaced edges of said notch defines the leading edge and the trailing edge of the helical thread.
Claim 6
Dependent Claim
40 words
A one-piece thread-cutting nut as set forth in claim 1, in which said thread-cutting means includes a plurality of circumferentially equally spaced cutting edges in the aperture of the face flange, and a helical thread extending from each cutting edge.
Claim 7
Dependent Claim
44 words
A one-piece thread-cutting nut as set forth in claim 5, in which said cutting edges are defined by notches formed in the periphery of the face flange aperture, said helical thread extending from the corresponding cutting edge until interrupted by the next succeeding notch.
Claim 8
Dependent Claim
65 words
A one-piece thread-cutting nut as set forth in claim 1, in which engagement of said face flange with a member causes distortion of the parallel flanges which in turn causes distortion of the axis of the nut relative to the axis of the member being threaded and provides sufficient bending of the threaded member to introduce binding between the threaded nut and the threaded member.
References Cited (Backward Citations)
FR641325A
Cited
US2326285A
Cited
US2723584A
Cited
GB835353A
Cited
US3350975A
Cited
US3388732A
Cited
US3501995A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-01-25 | 1974-07-27 | 1975-01-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-25 | 1978-07-27 | 1979-01-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-25 | 1982-07-27 | 1983-01-26 | $7700.00 | Window Closed / Lapsed |