Patent US3149704A successfully refreshed from Google Patents.
US3149704A
Expired / Lapsed
US
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Ceiling suspension system
Assignee: Armstrong World Industries Inc
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Filing: 1960-11-14
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Granted: 1964-09-22
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Expires: 1980-11-14
Abstract
No abstract record available.
Inventors
- 👤 Edward J Hodapp
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 21:17
CPC Classifications
E; E04; E04B; E04B9/00; E04B9/06; E04B9/12; E04B9/14; E04B9/10; Y; Y10; Y10S; Y10S52/00; Y10S52/05; Y10T; Y10T403/00; Y10T403/44; Y10T403/447
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
106 words
IN A RETICULATED CEILING SUSPENSION SYSTEM FOR HOLDING A PLURALITY OF RECTANGULAR CEILING UNITS, SAID SUSPENSION SYSTEM COMPRISING MAIN RUNNERS FOR SUPPORTING AT LEAST ONE EDGE OF SAID RECTANGULAR CEILING UNIT AND CROSS RUNNERS FOR SUPPORTING AT LEAST ONE EDGE AT RIGHT ANGLES TO THE EDGE SUPPORTED BY SAID MAIN RUNNERS, SAID MAIN RUNNERS AND CROSS RUNNERS BEING MADE IN SECTIONS TO FIT A PREDETERMINED MODULAR ARRANGEMENT, FUSIBLE INSERTS POSITIONED BETWEEN SAID MAIN RUNNER SECTION AND AT THE POINTS WHERE SAID CROSS RUNNERS ABUT SAID MAIN RUNNER, SAID INSERTS HAVING A MELTING POINT SUBSTANTIALLY LESS THAN THE MELTING POINT OF THE MAIN RUNNERS AND CROSS RUNNERS.
Claim 2
Dependent Claim
106 words
IN A RETICULATED CEILING SUSPENSION SYSTEM FOR HOLDING A PLURALITY OF RECTANGULAR CEILING UNITS, SAID SUSPENSION SYSTEM COMPRISING MAIN RUNNERS FOR SUPPORTING AT LEAST ONE EDGE OF SAID RECTANGULAR CEILING UNIT AND CROSS RUNNERS FOR SUPPORTING AT LEAST ONE EDGE AT RIGHT ANGLES TO THE EDGE SUPPORTED BY SAID MAIN RUNNERS, SAID MAIN RUNNERS AND CROSS RUNNERS BEING MADE IN SECTIONS TO FIT A PREDETERMINED MODULAR ARRANGEMENT, FUSIBLE INSERTS POSITIONED BETWEEN SAID MAIN RUNNER SECTION AND AT THE POINTS WHERE SAID CROSS RUNNERS ABUT SAID MAIN RUNNER, SAID INSERTS HAVING A MELTING POINT SUBSTANTIALLY LESS THAN THE MELTING POINT OF THE MAIN RUNNERS AND CROSS RUNNERS.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-09-22 | 1968-03-23 | 1968-09-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-09-22 | 1972-03-23 | 1972-09-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-09-22 | 1976-03-23 | 1976-09-22 | $7700.00 | Window Closed / Lapsed |