Patent US2633439A successfully refreshed from Google Patents.
US2633439A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hollow panel door structure
Assignee: Individual
•
Filing: 1948-06-22
•
Granted: 1953-03-31
•
Expires: 1968-06-22
Abstract
No abstract record available.
Inventors
- 👤 Konstandt Francisco Goldberger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:24
CPC Classifications
E; E06; E06B; E06B3/00; E06B3/70; E06B3/7015; E04; E04C; E04C2/00; E04C2/30; E04C2/34; E04C2/36; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49833; Y10T428/00; Y10T428/24; Y10T428/24149
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
111 words
A STRUCTURAL ELEMENT IN THE FORM OF A HOLLOW PANEL, COMPRISING TWO PLATES FACING EACH OTHER IN A SPACED RELATIONSHIP, SPIRAL-SHAPED MEMBERS EACH HAVING A PLURALITY OF COMPLETE SPIRAL TURNS, SAID MEMBERS BEING ARRANGED BETWEEN SAID PLATES IN EDGEWISE, RELATIONSHIP TO AND IN TOUCH WITH THE INNER FACES OF SAID PLATES AND IN CONTACT WITH EACH OTHER SO AS TO SPACE SAID PLATED FROM EACH OTHER, THE INDIVIDUAL SPIRAL TURNS OF EACH OF SAID MEMBERS BEING SPACED FROM EACH OTHER BY A FREE SPACE HAVING A WIDTH WHICH IS A MULTIPLE OF THE WALL THICKNESS OF SAID TURNS, AND BINDING MEANS SECURING SAID INNER FACES TO THE EDGES OF SAID MEMBERS.
Claim 2
Dependent Claim
111 words
A STRUCTURAL ELEMENT IN THE FORM OF A HOLLOW PANEL, COMPRISING TWO PLATES FACING EACH OTHER IN A SPACED RELATIONSHIP, SPIRAL-SHAPED MEMBERS EACH HAVING A PLURALITY OF COMPLETE SPIRAL TURNS, SAID MEMBERS BEING ARRANGED BETWEEN SAID PLATES IN EDGEWISE, RELATIONSHIP TO AND IN TOUCH WITH THE INNER FACES OF SAID PLATES AND IN CONTACT WITH EACH OTHER SO AS TO SPACE SAID PLATED FROM EACH OTHER, THE INDIVIDUAL SPIRAL TURNS OF EACH OF SAID MEMBERS BEING SPACED FROM EACH OTHER BY A FREE SPACE HAVING A WIDTH WHICH IS A MULTIPLE OF THE WALL THICKNESS OF SAID TURNS, AND BINDING MEANS SECURING SAID INNER FACES TO THE EDGES OF SAID MEMBERS.
References Cited (Backward Citations)
DE373934C
Cited
US1296359A
Cited
FR835092A
Cited
GB538306A
Cited
CH233120A
Cited
US2477852A
Cited
US2538330A
Cited
DK54775A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-03-30 | 1956-09-29 | 1957-03-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-03-30 | 1960-09-29 | 1961-03-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-03-30 | 1964-09-29 | 1965-03-31 | $7700.00 | Window Closed / Lapsed |