Patent US3606427A successfully refreshed from Google Patents.
US3606427A
Expired / Lapsed
US
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Powdered metal frangible seal
Assignee: ABB Installation Products Inc
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Filing: 1970-04-27
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Granted: 1971-09-20
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Expires: 1990-04-27
Abstract
Abstract A FRANGIBLE SEAL IS DISCLOSED AS INCLUDING A POWDERED METAL SLEEVE WHICH INCLUDES A WEAKENED AREA. THE FRANGIBLE SEAL IS DESIGNED TO FIRMLY GRIP TWO OR MORE MEMBERS ADJACENT EACH OTHER AND UPON THE MEMBERS BEING PULLED AWAY FORM EACH OTHER FRACTURE THE SLEEVE ALONG ITS WEAK- ENED AREA TO PROVIDE A VISUAL INDICATION OF THE MEMBERS HAVING BEEN SEPARATED FROM EACH OTHER.
Inventors
- 👤 Francis A O'loughlin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 07:59
CPC Classifications
G; G09; G09F; G09F3/00; G09F3/02; G09F3/03; G09F3/0305; G09F3/0347; G09F3/0352; G09F3/037; Y; Y10; Y10T; Y10T292/00; Y10T292/48
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) | 1974-09-19 | 1975-03-21 | 1975-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-19 | 1979-03-21 | 1979-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-19 | 1983-03-21 | 1983-09-20 | $7700.00 | Window Closed / Lapsed |