US3220079A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Foundation vent
Assignee: Individual
•
Filing: 1963-12-16
•
Granted: 1965-11-30
•
Expires: 1983-12-16
Abstract
No abstract record available.
Inventors
- 👤 Robert E Aggson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 22:11
CPC Classifications
E; E04; E04B; E04B1/00; E04B1/62; E04B1/70; E04B1/7069; E04B1/7076; F; F24; F24F; F24F13/00; F24F13/08; F24F13/082; F24F13/084
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
111 words
FOR USE IN THE FORMATION OF A THROUGH-WALL VENT IN A POURED CONCRETE WALL FORMED BETWEEN SPACED WALL FORM PANELS, A HOLLOW VENT BOX AND MEANS ON EACH END OF THE VENT BOX ADAPTED TO ENGAGE AGAISNT THE OPPOSED INNER FACES OF THE WALL FORM PANELS, SAID MEANS ON ONE END COMPRISING A RESILIENTLY FLEXIBLE PERIPHERALLY DISPOSED FLANGE CAPABLE OF FLEXIBLY ACCOMMODATING VARIATIONS IN THE SPACING BETWEEN THE WALL FORM PANELS, SAID FLANGE BEING OUTWADLY DIRECTED RELATIVE TO THE ADJOINING WALL PORTIONS OF THE VENT BOX AND FORWARDLY DIRECTED RELATIVE TO SAID ONE END, THE MEANS ON THE OTHER END COMPRISING A REVERSELY BENT END PORTION PRESENTING A SMOOTH FORWARDLY DIRECTED
Claim 2
Dependent Claim
111 words
FOR USE IN THE FORMATION OF A THROUGH-WALL VENT IN A POURED CONCRETE WALL FORMED BETWEEN SPACED WALL FORM PANELS, A HOLLOW VENT BOX AND MEANS ON EACH END OF THE VENT BOX ADAPTED TO ENGAGE AGAISNT THE OPPOSED INNER FACES OF THE WALL FORM PANELS, SAID MEANS ON ONE END COMPRISING A RESILIENTLY FLEXIBLE PERIPHERALLY DISPOSED FLANGE CAPABLE OF FLEXIBLY ACCOMMODATING VARIATIONS IN THE SPACING BETWEEN THE WALL FORM PANELS, SAID FLANGE BEING OUTWADLY DIRECTED RELATIVE TO THE ADJOINING WALL PORTIONS OF THE VENT BOX AND FORWARDLY DIRECTED RELATIVE TO SAID ONE END, THE MEANS ON THE OTHER END COMPRISING A REVERSELY BENT END PORTION PRESENTING A SMOOTH FORWARDLY DIRECTED
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) | 1968-11-29 | 1969-05-31 | 1969-11-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-29 | 1973-05-31 | 1973-11-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-29 | 1977-05-31 | 1977-11-30 | $7700.00 | Window Closed / Lapsed |