US3561142A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Safety shoes
Assignee: The Weinbrenner Shoe Corp
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Filing: 1969-08-11
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Granted: 1971-02-09
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Expires: 1989-08-11
Abstract
Abstract A STRIP OF SPRING STEEL IS CONNECTED AT ITS FORWARD END TO THE METAL TOE OF A SAFETY SHOE, THE STRIP PROJECTING THROUGH A SLIT IN THE LEATHER TOE COVERING AND UPWARDLY THROUGH A METAL GUIDE ON THE UNDERSIDE OF THE LOWER PORTION OF AN INSTEP GUARD, THE GUIDE BEING POSITIONED TO ENGAGE OVER THE REAR OF THE METAL TOE TO PROVIDE A FORCETRANSMITING PROJECTION WHEREBY A BLOW ON THE INSTEP GUARD IS TRANSMITTED TO THE METAL TOE, THE SPRING STEEL STRIP FORMING A HINGE CONNECTION FOR THE INSTEP GUARD.
Inventors
- 👤 Robert E Becker
- 👤 Henry W Streit Sr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 21:18
CPC Classifications
A; A43; A43C; A43C13/00; A43C13/14
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) | 1974-02-08 | 1974-08-10 | 1975-02-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-08 | 1978-08-10 | 1979-02-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-08 | 1982-08-10 | 1983-02-09 | $7700.00 | Window Closed / Lapsed |