US3606443A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Glass gripping tongs
Assignee: PPG Industries Inc
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Filing: 1968-12-27
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Granted: 1971-09-20
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Expires: 1988-12-27
Abstract
Abstract TONGS HAVING A PAIR OF LEVER ARMS PIVOTED TO A LOWER TONG MEMBER AND EXTENDING BEYOND THE LOWER TONG MEMBER TO CARRY GLASS ENGAGING MEMBERS, A PAIR OF LINKS PIVOTED BETWEEN AN UPPER TONG MEMBER AND ONE OR THE OTHER TONG ARMS AND ALIGNMENT MEANS COUPLING SAID UPPER AND LOWER TONG MEMBERS IN SUCH A MANNER TO MAINTAIN THE TONGS IN VERTICAL ALIGNMENT SO THAT THE GLASS ENGAGING MEMBERS AT THE LOWER END OF THE LEVER ARMS ARE HORIZONTALLY ALIGNED WHEN THE TONGS ENGAGE A GLASS SHEET SUSPENDED FOR THERMAL TREATMENT.
Inventors
- 👤 Frank F Painter
- 👤 Samuel L Seymour
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 21:03
CPC Classifications
C; C03; C03B; C03B35/00; C03B35/14; C03B35/20
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-09-19 | 1975-03-21 | 1975-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-19 | 1979-03-21 | 1979-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-19 | 1983-03-21 | 1983-09-20 | $7700.00 | Window Closed / Lapsed |