Patent US3592709A successfully refreshed from Google Patents.
US3592709A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Drive belt construction
Assignee: Owens Corning
•
Filing: 1969-02-24
•
Granted: 1971-07-13
•
Expires: 1989-02-24
Abstract
Abstract A POWER BELT MANUFACTURING METHOD COMPRISING THE STEPS OF WIDING A FIRST RUBBER LAYER ABOUT A COLLAPASIBLE MANDREL, A SECOND STIFFER LAYER ABOUT THE FIRST LAYER, WINDING A LENGTH OF GLASS FIBERS IN GATHERED-TOGETHER ARRAY SPIRALLY ABOUT THE SECOND LAYER, THE ARRAY BEING OF FLAT TO OVAL CROSS-SECTIONAL CONFIGURATION, REPEATED WINDS OF THE CORD BEING ADJACENT, WINDING ANOTHER LAYER OF STOCK ABOUT THE ASSEMBLY, FOLLOWED BY A CUTTING OF THE ASSEMBLY, COLLAPSING OF THE MANDREL, A REMOVAL OF THE ELEMENTS AND A VULCANIZATION OF THE ELEMENTS TO FORM THE POWER BELT.
Inventors
- 👤 Alfred Marzocchi
- 👤 Albert J Garbin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 14:57
CPC Classifications
F; F16; F16G; F16G5/00; F16G5/04; F16G5/06; B; B29; B29D; B29D29/00; B29D29/10
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1974-07-12 | 1975-01-11 | 1975-07-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-07-12 | 1979-01-11 | 1979-07-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-07-12 | 1983-01-11 | 1983-07-13 | $7700.00 | Window Closed / Lapsed |