US3196918A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Self-locking threaded fastener
Assignee: COLUMBUS BOLT AND FORGING CO
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Filing: 1964-07-16
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Granted: 1965-07-27
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Expires: 1984-07-16
Abstract
No abstract record available.
Inventors
- 👤 Lynn F Hampton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 06:35
CPC Classifications
B; B21; B21H; B21H3/00; B21H3/02; B21H3/025; F; F16; F16B; F16B39/00; F16B39/22; F16B39/28; F16B39/30; Y; Y10; Y10S; Y10S411/00; Y10S411/924; Y10S411/929; Y10S411/938
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
179 words
A SELF-LOCKING THREADED FASTENER COMPRISING: A PLURALITY OF THREAD CONVOLUTIONS FORMING LONGITUDINALLY SPACED CREST PORTIONS AND ROOT PORTIONS; A PROTRUDING PORTION BETWEEN TWO ADJACENT THREAD CREST PORTIONS AND EXTENDING CIRCUMFERENTIALLY ALONG AN INTERMEDIATE ROOT PORTION, SAID PROTUDING PORTION INCLUDING A FIRST ARCUATE PORTION EXTENDING FROM ONLY ONE OF TWO CONFRONTING SIDES OF TWO ADJACENT THREAD CREST PORTIONS, A SECOND ACUATE PORTION EXTENDING FROM FLANK TO FLANK OF ADJACENT THREADS INTERMEDIATE THE ROOT AND CREST THEREOF, AND A THIRD ARCUATE PORTION EXTENDING FROM ONLY THE OTHER OF SAID CONFRONTING SIDES OF SAID TWO ADJACENT THREAD CREST PORTIONS; SAID FIRST ARCUATE PORTION EXTENDING FROM ONE END OF THE SECOND ARCUATE PORTION AND THE THIRD ARCUATE PORTION EXTENDING FROM THE OTHER END OF SAID SECOND ARCUATE PORTION; SAID PROTRUDING PORTION HAVING A SUBSTANTIALLY UNIFORM MAXIMUM RADIAL EXTEND; SAID FIRST, SECOND AND THIRD ARCUATE PORTION TOGETHER EXTENDING CIRCUMFERENTIALLY AT LEAST IN THE OTHER OF 90 DEGREES: SAID FIRST AND THIRD ARCUATE PORTIONS EACH HAVING A RADIALLY EXTENDING SURFACE FACING THE CONFRONTING THREAD FLANK WHICH SURFACE EXTENDS TRANSVERSE TO THE AXIS OF THE FASTENER.
Claim 2
Dependent Claim
179 words
A SELF-LOCKING THREADED FASTENER COMPRISING: A PLURALITY OF THREAD CONVOLUTIONS FORMING LONGITUDINALLY SPACED CREST PORTIONS AND ROOT PORTIONS; A PROTRUDING PORTION BETWEEN TWO ADJACENT THREAD CREST PORTIONS AND EXTENDING CIRCUMFERENTIALLY ALONG AN INTERMEDIATE ROOT PORTION, SAID PROTUDING PORTION INCLUDING A FIRST ARCUATE PORTION EXTENDING FROM ONLY ONE OF TWO CONFRONTING SIDES OF TWO ADJACENT THREAD CREST PORTIONS, A SECOND ACUATE PORTION EXTENDING FROM FLANK TO FLANK OF ADJACENT THREADS INTERMEDIATE THE ROOT AND CREST THEREOF, AND A THIRD ARCUATE PORTION EXTENDING FROM ONLY THE OTHER OF SAID CONFRONTING SIDES OF SAID TWO ADJACENT THREAD CREST PORTIONS; SAID FIRST ARCUATE PORTION EXTENDING FROM ONE END OF THE SECOND ARCUATE PORTION AND THE THIRD ARCUATE PORTION EXTENDING FROM THE OTHER END OF SAID SECOND ARCUATE PORTION; SAID PROTRUDING PORTION HAVING A SUBSTANTIALLY UNIFORM MAXIMUM RADIAL EXTEND; SAID FIRST, SECOND AND THIRD ARCUATE PORTION TOGETHER EXTENDING CIRCUMFERENTIALLY AT LEAST IN THE OTHER OF 90 DEGREES: SAID FIRST AND THIRD ARCUATE PORTIONS EACH HAVING A RADIALLY EXTENDING SURFACE FACING THE CONFRONTING THREAD FLANK WHICH SURFACE EXTENDS TRANSVERSE TO THE AXIS OF THE FASTENER.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-07-26 | 1969-01-25 | 1969-07-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-07-26 | 1973-01-25 | 1973-07-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-07-26 | 1977-01-25 | 1977-07-27 | $7700.00 | Window Closed / Lapsed |