Patent US3173193A successfully refreshed from Google Patents.
US3173193A
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US
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Method of manufacturing a lattice girder
Assignee: Individual
•
Filing: 1963-11-05
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Granted: 1965-03-16
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Expires: 1983-11-05
Abstract
No abstract record available.
Inventors
- 👤 Grebner Fritz
- 👤 Spindler Gerhard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 14:20
CPC Classifications
E; E04; E04C; E04C3/00; E04C3/02; E04C3/20; E04C3/26; E04C3/29; E04C3/293; E04C3/294; E04C5/00; E04C5/01; E04C5/06; E04C5/065; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49616; Y10T29/49623; Y10T29/49625; Y10T29/49826; Y10T29/49863; Y10T29/49865
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
117 words
A METHOD OF MANUFACTURING A LATTICE GIRDER COMPRISING AN UPPER CHORD, A LOWER CHORD AND DIAGONAL STRUTS INTERCONNECTING THE CHORDS, INCLUDING THE STEPS OF FIRST AFFIXING ONE END OF THE STRUTS TO THE UPPER CHORD, TEMPORARILY STRETCHING THE UPPER CHORD WITH THE AFFIXED STRUTS A PREDETERMINED AMOUNT, EMBEDDING THE OTHER END OF THE STRUTS IN A LAYER OF CONCRETE WHILE THE UPPER CHORD WITH THE AFFIXED IS STRETCHED, PERMITTING THE CONCRETE LAYER TO HARDEN TO PRODUCE A CONCRETE SLAB CONSTITUTING THE LOWER CHORD, WHEREBY SAID CONCRETE LAYER SHRINKS, SAID PREDETERMINED AMOUNT BEING SELECTED SUBSTANTIALLY TO EQUAL THE SHRINKAGE OF SAID CONCRETE LAYER, AND DISCONTINUING THE TEMPORARY STRETCH OF THE UPPER CHORD WHILE THE HARDENING CONCRETE LAYER SHRINKS.
Claim 2
Independent Claim
117 words
A METHOD OF MANUFACTURING A LATTICE GIRDER COMPRISING AN UPPER CHORD, A LOWER CHORD AND DIAGONAL STRUTS INTERCONNECTING THE CHORDS, INCLUDING THE STEPS OF FIRST AFFIXING ONE END OF THE STRUTS TO THE UPPER CHORD, TEMPORARILY STRETCHING THE UPPER CHORD WITH THE AFFIXED STRUTS A PREDETERMINED AMOUNT, EMBEDDING THE OTHER END OF THE STRUTS IN A LAYER OF CONCRETE WHILE THE UPPER CHORD WITH THE AFFIXED IS STRETCHED, PERMITTING THE CONCRETE LAYER TO HARDEN TO PRODUCE A CONCRETE SLAB CONSTITUTING THE LOWER CHORD, WHEREBY SAID CONCRETE LAYER SHRINKS, SAID PREDETERMINED AMOUNT BEING SELECTED SUBSTANTIALLY TO EQUAL THE SHRINKAGE OF SAID CONCRETE LAYER, AND DISCONTINUING THE TEMPORARY STRETCH OF THE UPPER CHORD WHILE THE HARDENING CONCRETE LAYER SHRINKS.
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) | 1968-03-15 | 1968-09-14 | 1969-03-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-03-15 | 1972-09-14 | 1973-03-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-03-15 | 1976-09-14 | 1977-03-16 | $7700.00 | Window Closed / Lapsed |