Patent US3344567A successfully refreshed from Google Patents.
US3344567A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Void drain for box beams
Assignee: Individual
•
Filing: 1965-02-19
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Granted: 1967-10-03
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Expires: 1985-02-19
Abstract
No abstract record available.
Inventors
- 👤 John D Cowan
- 👤 Charles C Waldbillig
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 11:15
CPC Classifications
E; E04; E04C; E04C3/00; E04C3/02; E04C3/29; E04C3/20; E04C3/26
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
93 words
IN A REINFORCED CONCRETE BOX BEAM HAVING BOTTOM, TOP AND SIDE WALLS AND LONGITUDINALLY EXTENDING STEEL WIRES IN AT LEAST THE BOTTOM WALL AND SPACED UPWARDLY FROM ITS BOTTOM SURFACE, A VOID DRAIN FOR SAID BEAM COMPRISING AN ELONGATED TUBE EXTENDING TRANSVERSELY THROUGH SAID BOTTOM WALL, A BASE INTEGRAL WITH THE LOWER END OF SAID TUBE AND PROJECTING LATERALLY THEREFROM, SHOULDER FORMING MEANS INTEGRAL WITH SAID TUBE AND PROJECTING LATERALLY THEREFROM AT A LOCATION SPACED ABOVE SAID BASE, SAID SHOULDER FORMING MEANS ENGAGED BY AND UNDERLYING AT LEAST ONE OF SAID STEEL WIRES.
Claim 2
Dependent Claim
93 words
IN A REINFORCED CONCRETE BOX BEAM HAVING BOTTOM, TOP AND SIDE WALLS AND LONGITUDINALLY EXTENDING STEEL WIRES IN AT LEAST THE BOTTOM WALL AND SPACED UPWARDLY FROM ITS BOTTOM SURFACE, A VOID DRAIN FOR SAID BEAM COMPRISING AN ELONGATED TUBE EXTENDING TRANSVERSELY THROUGH SAID BOTTOM WALL, A BASE INTEGRAL WITH THE LOWER END OF SAID TUBE AND PROJECTING LATERALLY THEREFROM, SHOULDER FORMING MEANS INTEGRAL WITH SAID TUBE AND PROJECTING LATERALLY THEREFROM AT A LOCATION SPACED ABOVE SAID BASE, SAID SHOULDER FORMING MEANS ENGAGED BY AND UNDERLYING AT LEAST ONE OF SAID STEEL WIRES.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-10-02 | 1971-04-03 | 1971-10-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-10-02 | 1975-04-03 | 1975-10-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-10-02 | 1979-04-03 | 1979-10-03 | $7700.00 | Window Closed / Lapsed |