US3721200A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Freight restraining bar
Assignee: United States Gypsum Co
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Filing: 1971-04-02
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Granted: 1973-03-20
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Expires: 1991-04-02
Abstract
Abstract A FREIGHT-RESTRAINING BAR AND HEAD WHEREIN A SINGLE RAIL-ENGAGING MEMBER IS USED TO CONNECT THE HEAD WITH TWO DIFFERENT, ALTERNATIVELY USED, SECURING MEANS IN THE FREIGHT CHAMBER. THE RAIL-ENGAGING MEMBER IS PIVOTED TO ROTATE BETWEEN THE TWO POSITIONS IT MUST TAKE TO PENETRATE THE TWO DIFFERENTIALLY ORIENTED SECURING MEANS. LOCKING PROVISIONS ARE PROVIDED TO PREVENT ACCIDENTAL DISLODGING OF THE HEADS, ONCE ENGAGED. D R A W I N G
Inventors
- 👤 D Schmidt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 08:08
CPC Classifications
B; B61; B61D; B61D45/00; B61D45/001
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) | 1976-03-19 | 1976-09-18 | 1977-03-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-03-19 | 1980-09-18 | 1981-03-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-03-19 | 1984-09-18 | 1985-03-20 | $7700.00 | Window Closed / Lapsed |