US3198953A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatically positioned sun mask for sighting devices
Assignee: Boelkow Entwicklungen KG
•
Filing: 1961-11-15
•
Granted: 1965-08-03
•
Expires: 1981-11-15
Abstract
No abstract record available.
Inventors
- 👤 Peters Johannes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 12:27
CPC Classifications
G; G02; G02B; G02B5/00; G02B5/005; G02B23/00; G02B23/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
109 words
A DEVICE FOR MASKING SUN RAYS IN OPTICAL SYSTEMS FOR POSITION FINDING, BEARING AND SIGHTING DEVICES AND THE LIKE, COMPRISING AN OPTICAL SYSTEM HAVING AN INTERMEDIATE IMAGE PLANE, A MASK FOR KEEPING AWAY THE SUN RAYS FROM THE IMAGE PLANE OF THE DEVICE LOCATED IN SAID INTERMEDIATE IMAGE PLANE, AND ADJUSTING MEANS CONNECTED TO SAID MASK INCLUDING MEANS EXPOSED TO THE SUN TO MOVE SAID MASK IN ACCORDANCE WITH MOVEMENT OF THE SUN, SAID MASK BEING MOUNTED ON A TRANSPARENT PLATE, SAID OPTICAL SYSTEM INCLUDING AN INTERMEDIARY PLANE, SAID PLATE BEING LIGHT PERMEABLE AND HEAT RESISTANT, SAID MASK INCLUDING A METAL PIN LOCATED AT THE CENTER OF SAID PLATE.
Claim 2
Independent Claim
109 words
A DEVICE FOR MASKING SUN RAYS IN OPTICAL SYSTEMS FOR POSITION FINDING, BEARING AND SIGHTING DEVICES AND THE LIKE, COMPRISING AN OPTICAL SYSTEM HAVING AN INTERMEDIATE IMAGE PLANE, A MASK FOR KEEPING AWAY THE SUN RAYS FROM THE IMAGE PLANE OF THE DEVICE LOCATED IN SAID INTERMEDIATE IMAGE PLANE, AND ADJUSTING MEANS CONNECTED TO SAID MASK INCLUDING MEANS EXPOSED TO THE SUN TO MOVE SAID MASK IN ACCORDANCE WITH MOVEMENT OF THE SUN, SAID MASK BEING MOUNTED ON A TRANSPARENT PLATE, SAID OPTICAL SYSTEM INCLUDING AN INTERMEDIARY PLANE, SAID PLATE BEING LIGHT PERMEABLE AND HEAT RESISTANT, SAID MASK INCLUDING A METAL PIN LOCATED AT THE CENTER OF SAID PLATE.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-08-02 | 1969-02-01 | 1969-08-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-02 | 1973-02-01 | 1973-08-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-02 | 1977-02-01 | 1977-08-03 | $7700.00 | Window Closed / Lapsed |