US3611666A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sheet metal box beam
Assignee: Republic Storage Systems Co Inc
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Filing: 1970-03-10
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Granted: 1971-10-12
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Expires: 1990-03-10
Abstract
Abstract A BEAM CONSTRUCTION COMPRISED OF A PAIR OF SHEET METAL COMPONENTS EACH HAVING A LOAD SUPPORTING FLANGE. FLANGES OF THE LIPPED CHANNEL COMPONENTS ARE NESTED TOGETHER AND MECHANICALLY INTERLOCKED SO THAT PORTIONS OF THE BEAM ASSEMBLY SUBJECTED TO COMPRESIVE STRESSES ARE REINFORCED, YET SECTIONAL THICKNESSES ARE MINIMIZED IN OTHER PORTIONS OF THE BEAM. THE TWO MEMBERS FORMING THE BEAM MECHANICALLY INTERLOCK IN A MANNER WHICH PERMITS SIMPLE ASSEMBLY. WELDING OF THE COMPONENTS IS NOT NECCESSARY TO DEVELOP THE STRENGTH OF THE BEAM.
Inventors
- 👤 Edward J Poyser
- 👤 Calvin R Clauer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 09:10
CPC Classifications
E; E04; E04C; E04C3/00; E04C3/02; E04C3/04; E04C3/06; E04C3/07; A; A47; A47B; A47B47/00; A47B47/02; A47B47/021; A47B47/027; E04C2003/0404; E04C2003/0408; E04C2003/0413; E04C2003/0426; E04C2003/043; E04C2003/0443; E04C2003/046
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) | 1974-10-11 | 1975-04-12 | 1975-10-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-10-11 | 1979-04-12 | 1979-10-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-10-11 | 1983-04-12 | 1983-10-12 | $7700.00 | Window Closed / Lapsed |