US3334458A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Structural member
Assignee: Aircontrol Systems Inc
•
Filing: 1963-10-21
•
Granted: 1967-08-08
•
Expires: 1983-10-21
Abstract
No abstract record available.
Inventors
- 👤 John C Leemhuis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 12:53
CPC Classifications
E; E04; E04B; E04B5/00; E04B5/16; E04B5/32; E04B5/36; E04B5/38; E04B5/326
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
100 words
A COMPOSITE TRUSS SLAB COMPRISING A SLAB OF CONCRETE, SAID SLAB INCLUDING PRESTRESSED REINFORCING MEANS EXTENDING THROUGHOUT THE EXTEND OF THE SLAB, MEANS PROVIDING A CELLULAR CONSTRUCTION ON SAID CONCRETE SLAB COMPRISING A WEB FORMATION DEFINING INTERCONNECTED DOME-SHAPED CHAMBERS CONFIGURATED TO PROVIDE A NETWORK OF SPACES ALLOWING AIR CIRCULATION IN ALL DIRECTIONS, AN OVERLYING LAYER OF CONCRETE ON SAID WEB FORMATION WITH SPACED COLUMNS OF CONCRETE EXTENDING THROUGH SAID WEB FORMATION TO SAID SLAB, AND REINFORCING MEMBERS SPACED ALONG THE SLAB HAVING PORTIONS EMBEDDED THEREIN, INTERMEDIATE PORTIONS EXTENDING THROUGH SAID COLUMNS AND PORTIONS EMBEDDED IN SAID OVERLYING LAYER OF CONCRETE.
Claim 2
Dependent Claim
100 words
A COMPOSITE TRUSS SLAB COMPRISING A SLAB OF CONCRETE, SAID SLAB INCLUDING PRESTRESSED REINFORCING MEANS EXTENDING THROUGHOUT THE EXTEND OF THE SLAB, MEANS PROVIDING A CELLULAR CONSTRUCTION ON SAID CONCRETE SLAB COMPRISING A WEB FORMATION DEFINING INTERCONNECTED DOME-SHAPED CHAMBERS CONFIGURATED TO PROVIDE A NETWORK OF SPACES ALLOWING AIR CIRCULATION IN ALL DIRECTIONS, AN OVERLYING LAYER OF CONCRETE ON SAID WEB FORMATION WITH SPACED COLUMNS OF CONCRETE EXTENDING THROUGH SAID WEB FORMATION TO SAID SLAB, AND REINFORCING MEMBERS SPACED ALONG THE SLAB HAVING PORTIONS EMBEDDED THEREIN, INTERMEDIATE PORTIONS EXTENDING THROUGH SAID COLUMNS AND PORTIONS EMBEDDED IN SAID OVERLYING LAYER OF CONCRETE.
References Cited (Backward Citations)
US1329699A
Cited
US1349868A
Cited
US1897327A
Cited
FR734341A
Cited
US2592634A
Cited
AT164341B
Cited
US2602323A
Cited
GB748104A
Cited
US3184892A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-08-07 | 1971-02-06 | 1971-08-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-08-07 | 1975-02-06 | 1975-08-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-08-07 | 1979-02-06 | 1979-08-08 | $7700.00 | Window Closed / Lapsed |