US3300839A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making cambered beams
Assignee: LIHAP IND
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Filing: 1963-07-01
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Granted: 1967-01-31
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Expires: 1983-07-01
Abstract
No abstract record available.
Inventors
- 👤 Robert D Lichti
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 22:00
CPC Classifications
B; B21; B21D; B21D47/00; B21D47/04; E; E04; E04C; E04C3/00; E04C3/38; E04C3/40; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49616; Y10T29/49623; Y10T29/49634; Y10T29/49826; Y10T29/49863
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
91 words
THE METHOD OF MANUFACTURING A CAMBERED I-BEAM INCLUDING, FIRST ESTABLISHING AN ELONGATE, WEB MEMBER WITH TRANVERSE CORRUGATIONS THROUGHOUT ITS LONGITUDINAL EXTENT FROM AN ELONGATE METAL STRIP HAVING PARALLEL SIDE EDGES, THEN FIXING AN ELONGATE FIRST CHORD MEMBER TO ONE EDGE OF THE WEB THROUGHOUT THE LONGITUDINAL EXTENT THEREOF, THEN CAMBERING THE ASSEMBLED FIRST CHORD MEMBER AND WEB, NEXT ARRANGING AN ELONGATE SECOND CHORD MEMBER ADJACENT THE OTHER EDGE OF THE WEB AND URGING IT INTO ENGAGEMENT THEREWITH AND FINALLY FIXING THE SECOND CHORD MEMBER TO THE WEB THROUGHOUT THE LONGITUDINAL THEREOF.
Claim 2
Independent Claim
91 words
THE METHOD OF MANUFACTURING A CAMBERED I-BEAM INCLUDING, FIRST ESTABLISHING AN ELONGATE, WEB MEMBER WITH TRANVERSE CORRUGATIONS THROUGHOUT ITS LONGITUDINAL EXTENT FROM AN ELONGATE METAL STRIP HAVING PARALLEL SIDE EDGES, THEN FIXING AN ELONGATE FIRST CHORD MEMBER TO ONE EDGE OF THE WEB THROUGHOUT THE LONGITUDINAL EXTENT THEREOF, THEN CAMBERING THE ASSEMBLED FIRST CHORD MEMBER AND WEB, NEXT ARRANGING AN ELONGATE SECOND CHORD MEMBER ADJACENT THE OTHER EDGE OF THE WEB AND URGING IT INTO ENGAGEMENT THEREWITH AND FINALLY FIXING THE SECOND CHORD MEMBER TO THE WEB THROUGHOUT THE LONGITUDINAL THEREOF.
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) | 1970-01-30 | 1970-08-01 | 1971-01-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-30 | 1974-08-01 | 1975-01-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-30 | 1978-08-01 | 1979-01-31 | $7700.00 | Window Closed / Lapsed |