Patent US3083794A successfully refreshed from Google Patents.
US3083794A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Joined sheet metal structures
Assignee: Penn Metal Co Inc
•
Filing: 1960-04-12
•
Granted: 1963-04-02
•
Expires: 1980-04-12
Abstract
No abstract record available.
Inventors
- 👤 Jr Wilbur C Stovall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 09:43
CPC Classifications
F; F16; F16B; F16B5/00; B; B21; B21D; B21D39/00; B21D39/03; B21D39/034; E; E04; E04B; E04B2/00; E04B2/56; E04B2/58; E04B2/60; E04B2/62; E04C; E04C3/00; E04C3/30; E04C3/32; Y; Y10; Y10T; Y10T29/00; Y10T29/34; Y10T29/49; Y10T29/49826; Y10T29/49833; Y10T29/49908; Y10T29/49915; Y10T29/49936
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
116 words
THE METHOD OF PREFABRICATING A SHEET METAL ASSEMBLY IN WHICH LAYERS OF SHEET METAL ARE JOINED TOGETHER WHICH COMPRISES OVERLAPPING SAID LAYERS OF SHEET METAL, CUTTING THROUGH THE OVERLAPPING LAYERS TO FORM A PAIR OF SPACED TABS EACH HAVING THE SAME NUMBER OF LAYERS AS THE LAYERS OF SAID SHEET METAL, BENDING BOTH OF SAID TABS OUT OF THE PLANE OF THE CUT LAYERS AND BACK TOWARD ONE SIDE OF SAID OVERLAPPING LAYERS IN OPPOSITE DIRECTIONS ALONG SAID SIDE, AND PRESSING THE BENT TABS AND THE UNDERLYING LAYERS OF SHEET METAL TOGETHER AND FORMING A CONCAVE DEPRESSION FROM SAID ONE SIDE EXTENDING LONGITUDINALLY SUBSTANTIALLY AT A RIGHT ANGLE TO THE LINE OF BEND OF EACH TAB.
Claim 2
Independent Claim
116 words
THE METHOD OF PREFABRICATING A SHEET METAL ASSEMBLY IN WHICH LAYERS OF SHEET METAL ARE JOINED TOGETHER WHICH COMPRISES OVERLAPPING SAID LAYERS OF SHEET METAL, CUTTING THROUGH THE OVERLAPPING LAYERS TO FORM A PAIR OF SPACED TABS EACH HAVING THE SAME NUMBER OF LAYERS AS THE LAYERS OF SAID SHEET METAL, BENDING BOTH OF SAID TABS OUT OF THE PLANE OF THE CUT LAYERS AND BACK TOWARD ONE SIDE OF SAID OVERLAPPING LAYERS IN OPPOSITE DIRECTIONS ALONG SAID SIDE, AND PRESSING THE BENT TABS AND THE UNDERLYING LAYERS OF SHEET METAL TOGETHER AND FORMING A CONCAVE DEPRESSION FROM SAID ONE SIDE EXTENDING LONGITUDINALLY SUBSTANTIALLY AT A RIGHT ANGLE TO THE LINE OF BEND OF EACH TAB.
References Cited (Backward Citations)
US1902111A
Cited
US2288309A
Cited
US2457148A
Cited
US2619855A
Cited
US2718289A
Cited
US2865451A
Cited
US2913076A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-04-01 | 1966-10-01 | 1967-04-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-04-01 | 1970-10-01 | 1971-04-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-04-01 | 1974-10-01 | 1975-04-02 | $7700.00 | Window Closed / Lapsed |