US3185506A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sheet metal duct
Assignee: Individual
•
Filing: 1963-08-16
•
Granted: 1965-05-25
•
Expires: 1983-08-16
Abstract
No abstract record available.
Inventors
- 👤 Szlashta Joseph
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 15:12
CPC Classifications
F; F23; F23J; F23J13/00; F23J13/04; F16; F16L; F16L9/00; F16L9/02; F23J2213/00; F23J2213/20; F23J2213/202
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
118 words
A SHEET METAL DUCT CONSISTING OF HOOD SLIDABLY MOUNTED IN A STACK ADAPTER, SAID HOOD CONSISTING OF A BODY OF PRE-CUT FLAT SHEET OF MATERIAL FOLDED TO PROVIDA BEAD AND A HEEL HAVING A REAR EDGE, ADJACENT CHEEKS HAVING NECK PORTIONS, AND SIDE PORTIONS AND SAID NECK PORTIONS HAVING FRONT PORTIONS, SAID ADJACENT CHECKS BEING PARALLEL TO EACH OTHER AND AT APPROXIMATELY NINETY DEGREES TO SAID HEEL, SAID NECK PORTIONS BEING APPROXIMATELY NINETY DEGREES TO SAID ADJACENT CHEEKS, A COLLAR PROVIDED WITH AN ESCALLOPED EDGE, MEANS FASTINGING SAID COLLAR AND SAID NECK PORTIONS TOGETHER, SAID REAR EDGE BEING FOLDED UPON ITSELF TO FORM A GUARD STRIP, SAID SIDE PORTIONS BEING FOLDED UPON THEMSELVES TO FORM OPPOSITE AND PARAL-
Claim 2
Dependent Claim
118 words
A SHEET METAL DUCT CONSISTING OF HOOD SLIDABLY MOUNTED IN A STACK ADAPTER, SAID HOOD CONSISTING OF A BODY OF PRE-CUT FLAT SHEET OF MATERIAL FOLDED TO PROVIDA BEAD AND A HEEL HAVING A REAR EDGE, ADJACENT CHEEKS HAVING NECK PORTIONS, AND SIDE PORTIONS AND SAID NECK PORTIONS HAVING FRONT PORTIONS, SAID ADJACENT CHECKS BEING PARALLEL TO EACH OTHER AND AT APPROXIMATELY NINETY DEGREES TO SAID HEEL, SAID NECK PORTIONS BEING APPROXIMATELY NINETY DEGREES TO SAID ADJACENT CHEEKS, A COLLAR PROVIDED WITH AN ESCALLOPED EDGE, MEANS FASTINGING SAID COLLAR AND SAID NECK PORTIONS TOGETHER, SAID REAR EDGE BEING FOLDED UPON ITSELF TO FORM A GUARD STRIP, SAID SIDE PORTIONS BEING FOLDED UPON THEMSELVES TO FORM OPPOSITE AND PARAL-
References Cited (Backward Citations)
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Cited
CA620462A
Cited
US831429A
Cited
US2874980A
Cited
US2950131A
Cited
US2963783A
Cited
US2965397A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-05-24 | 1968-11-23 | 1969-05-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-05-24 | 1972-11-23 | 1973-05-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-05-24 | 1976-11-23 | 1977-05-25 | $7700.00 | Window Closed / Lapsed |