US3556575A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tamperproof seal
Assignee: ABB Installation Products Inc
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Filing: 1968-11-15
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Granted: 1971-01-19
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Expires: 1988-11-15
Abstract
Abstract D R A W I N G THE INVENTION IS DIRECTED TO A TAMPERPROOF SEAL WHICH CAN BE INSTALLED OR REMOVED WITHOUT TOOLS AND WHICH READILY SHOWS WHEN THE SEAL HAS BEEN TAMPERED WITH. THE SEAL IS COMPRISED OF AN ELONGATED BODY PORTION COUPLED BY A WEAKENED PORTION TO A SEAL PORTION. THE SEAL PORTION EXTENDS TO A LOCKING HEAD MEMBER, SHROUDED SUCH AS TO PREVENT THE INTRUSION OF TOOLS OR OTHER DEVICES ONTO THE HEAD TO UNLOCK THE SEAL. EXCESS PRESSURE UPON THE SEAL RUPTURES THE WEAKENED PORTION TO SHOW TAMPERING.
Inventors
- 👤 Paul Farkas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:52
CPC Classifications
G; G09; G09F; G09F3/00; G09F3/02; G09F3/03; G09F3/0305; G09F3/0347; G09F3/0352; B; B65; B65D; B65D63/00; B65D63/10; B65D63/1018; B65D63/1027; B65D63/1036; B65D77/00; B65D77/10; B65D77/16; B65D77/18; B65D77/185; B65D2563/00; B65D2563/10; B65D2563/101; B65D2563/108; Y; Y10; Y10T; Y10T24/00; Y10T24/14; Y10T24/1498; Y10T24/15; Y10T292/00; Y10T292/48; Y10T292/4945; Y10T292/496
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) | 1974-01-18 | 1974-07-20 | 1975-01-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-18 | 1978-07-20 | 1979-01-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-18 | 1982-07-20 | 1983-01-19 | $7700.00 | Window Closed / Lapsed |