US3737355A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fastener improvement
Assignee: SPS Technologies LLC
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Filing: 1971-01-18
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Granted: 1973-06-05
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Expires: 1991-01-18
Abstract
Abstract METHOD FOR PROVIDING A METAL FASTENER, SUCH AS A THREADED NUT OR BOLT, WITH A LOCKING ELEMENT MADE OF AN ENGINEERING PLASTIC SUCH AS NYLON, BY PREPARING A LAMINATE OF SAID PLASTIC AND AN UNCURED ADHESIVE BLEND OF A THERMOPLASTIC AND THERMOSETTING RESIN, DIMENSIONING THE LAMINATE TO THE SIZE AND SHAPE OF THE DESIRED LOCKING ELEMENT, APPLYING THE FORMED LAMINATE TO THE FASTENER WITH THE ADHESIVE LAYER IN CONTACT THEREWITH, AND APPLYING HEAT AND PRESSURE TO ADHERE THE LAMINATELOCKING ELEMENT TO THE FASTENER.
Inventors
- 👤 M Epstein
- 👤 C Cooper
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:57
CPC Classifications
F; F16; F16B; F16B39/00; F16B39/22; F16B39/28; F16B39/34; B; B29; B29C; B29C63/00; B29C63/48; Y; Y10; Y10S; Y10S273/00; Y10S273/06; Y10S411/00; Y10S411/924; Y10S411/929; Y10S411/93
Claims Analysis
Total Claims: 0
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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) | 1976-06-04 | 1976-12-04 | 1977-06-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-06-04 | 1980-12-04 | 1981-06-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-06-04 | 1984-12-04 | 1985-06-05 | $7700.00 | Window Closed / Lapsed |