Patent US3336719A successfully refreshed from Google Patents.
US3336719A
Expired / Lapsed
US
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Joint locking means
Assignee: PPG Industries Inc
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Filing: 1965-05-24
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Granted: 1967-08-22
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Expires: 1985-05-24
Abstract
No abstract record available.
Inventors
- 👤 Brack Hans
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 09:10
CPC Classifications
E; E06; E06B; E06B3/00; E06B3/04; E06B3/06; E06B3/08; E06B3/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
70 words
A TWO-PIECE STRUCTURAL ASSEMBLY COMPRISING: (A) A GENERALLY PLANAR FIRST MAIN FLANGE MEMBER, THE LATTER HAVING FIRST AND SECOND FLANGES PROJECTING OUTWARDLY THEREFROM AT ACUTE ANGLES WITH RESPECT THERETO, SAID FIRST AND SECOND FLANGES CONVERGING TOWARDS EACH OTHER TO DEFINE A DOVETAIL-IN-SECTION SHAPED GROOVE, THE FIRST ONE OF SAID FLANGES DISPOSED ADJACENT AND EDGE OF THE FIRST MAIN FLANGE MEMBER, AND THE SECOND ONE OF SAID FLANGES SPACED INWARDLY THEREFROM;
Claim 2
Dependent Claim
70 words
A TWO-PIECE STRUCTURAL ASSEMBLY COMPRISING: (A) A GENERALLY PLANAR FIRST MAIN FLANGE MEMBER, THE LATTER HAVING FIRST AND SECOND FLANGES PROJECTING OUTWARDLY THEREFROM AT ACUTE ANGLES WITH RESPECT THERETO, SAID FIRST AND SECOND FLANGES CONVERGING TOWARDS EACH OTHER TO DEFINE A DOVETAIL-IN-SECTION SHAPED GROOVE, THE FIRST ONE OF SAID FLANGES DISPOSED ADJACENT AND EDGE OF THE FIRST MAIN FLANGE MEMBER, AND THE SECOND ONE OF SAID FLANGES SPACED INWARDLY THEREFROM;
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) | 1970-08-21 | 1971-02-20 | 1971-08-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-08-21 | 1975-02-20 | 1975-08-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-08-21 | 1979-02-20 | 1979-08-22 | $7700.00 | Window Closed / Lapsed |