US3353893A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rear view automotive periscope utilizing toric mirrors
Assignee: Individual
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Filing: 1967-04-06
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Granted: 1967-11-21
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Expires: 1987-04-06
Abstract
No abstract record available.
Inventors
- 👤 Steven H Bamberger
- 👤 Milo O Rudd
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:57
CPC Classifications
B; B60; B60R; B60R1/00; B60R1/10; G; G02; G02B; G02B17/00; G02B17/02; G02B17/06; G02B17/0605
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
161 words
A VEHICULAR TWO TORIC REAR-REVIEW MIRROR SYSTEM COMPRISING: (A) A FIRST MIRROR MOUNTED ABOVE THE VEHICLE TO RECEIVE RAYS FROM THE REAR AND REFLECT THEM DOWNWARDLY; (B) SAID FIRST MIRROR HAVING A REFLECTING SURFACE CONVEX IN THE HORIZONTAL MERIDIAN AND CONCAVE IN THE VERTICAL MERIDIAN; (C) A SECOND MIRROR MOUNTED BELOW THE FIRST, POSITIONED TO RECEIVE THE DOWNWARDLY REFLECTED RAYS FROM SAID FIRST MIRROR AND TO DIRECT SAID RAYS TO THE EYE OF A VEHICLE OPERATOR IN NORMAL OPERATING POSITION; (D) SAID SECOND MIRROR HAVING A REFLECTING SURFACE CONCAVE IN THE HORIZONTAL AND VERTICAL MERIDIANS; (E) SAID MIRRORS BEING SPACED APART A VERTICAL DISTANCE APPROXIMATELY EQUAL TO THE SUM OF THE FOCAL DISTANCES OF THE TWO MIRRORS IN THEIR RESPECTIVE VERTICAL MERIDIANS; AND (F) WHEREIN THE FOCAL DISTANCES IN THE HORIZONTAL SECTION OF THE UPPER (FUH) AND LOWER (F1H) MIRRORS, THE DISTANCE BETWEEN THE MIRRORS (D), AND THE DISTANCE FROM THE LOWER MIRROR TO THE OBSERVER''S EYE (E) ARE RELATED BY:
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) | 1970-11-20 | 1971-05-22 | 1971-11-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-11-20 | 1975-05-22 | 1975-11-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-11-20 | 1979-05-22 | 1979-11-21 | $7700.00 | Window Closed / Lapsed |