US3407019A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Slit lamp
Assignee: American Optical Corp
•
Filing: 1964-09-23
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Granted: 1968-10-22
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Expires: 1984-09-23
Abstract
No abstract record available.
Inventors
- 👤 Leonard A Wilkinson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 13:09
CPC Classifications
A; A61; A61B; A61B3/00; A61B3/10; A61B3/13; A61B3/135; A61B3/107
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
163 words
IN A SLIT LAMP ASSEMBLY, IN COMBINATION A LIGHT SOURCE AND A CONDENSER SYSTEM OPTICALLY ALIGNED THEREWITH, A PAIR OF INTERCONNECTED CARRIERS HAVING OPENINGS CENTERED ON THE OPTICAL AXIS OF SAID CODENSER AND MOUNTED FOR ROTATION ABOUT SUCH OPTICAL AXIS, A PAIR OF JAWS HAVING SPACED, PARALLEL EDGES DISPOSED ON OPPOSITE SIDES OF THE OPTICAL AXIS, GUIDE MEANS MOUNTING SAID JAWS ON ONE OF SAID CARRIER FOR MOVEMENT TOWARD AND AWAY FROM EACH OTHER TO VARY THE SPACING BETWEEN SAID EDGES, CAM AND PROJECTION MEANS CONNECTING THE OTHER CARRIER TO SAID JAWS FOR MOVING SAID JAWS IN RESPONSE TO RELATIVE ROTATION BETWEEN SAID CARRIERS, A FIRST MANUALLY ACTUATED CONTROL MEMBER CONNECTED TO SAID ONE CARRIER AND AN EPICYCLIC DRIVE TRAIN FOR ROTATING SAID ONE CARRIER TO VARY THE SIZE OF THE SLIT BETWEEN SAID JAWS, A SECOND MANUALLY ACTUATED CONTROL MEMBER CONNECTED TO SAID PAIR OF CARRIERS AND TO SAID EPICYCLIC DRIVE TRAIN FOR ROTATING SAID CARRIERS IN UNISON TO ROTATE THE SLIT,
Claim 2
Dependent Claim
163 words
IN A SLIT LAMP ASSEMBLY, IN COMBINATION A LIGHT SOURCE AND A CONDENSER SYSTEM OPTICALLY ALIGNED THEREWITH, A PAIR OF INTERCONNECTED CARRIERS HAVING OPENINGS CENTERED ON THE OPTICAL AXIS OF SAID CODENSER AND MOUNTED FOR ROTATION ABOUT SUCH OPTICAL AXIS, A PAIR OF JAWS HAVING SPACED, PARALLEL EDGES DISPOSED ON OPPOSITE SIDES OF THE OPTICAL AXIS, GUIDE MEANS MOUNTING SAID JAWS ON ONE OF SAID CARRIER FOR MOVEMENT TOWARD AND AWAY FROM EACH OTHER TO VARY THE SPACING BETWEEN SAID EDGES, CAM AND PROJECTION MEANS CONNECTING THE OTHER CARRIER TO SAID JAWS FOR MOVING SAID JAWS IN RESPONSE TO RELATIVE ROTATION BETWEEN SAID CARRIERS, A FIRST MANUALLY ACTUATED CONTROL MEMBER CONNECTED TO SAID ONE CARRIER AND AN EPICYCLIC DRIVE TRAIN FOR ROTATING SAID ONE CARRIER TO VARY THE SIZE OF THE SLIT BETWEEN SAID JAWS, A SECOND MANUALLY ACTUATED CONTROL MEMBER CONNECTED TO SAID PAIR OF CARRIERS AND TO SAID EPICYCLIC DRIVE TRAIN FOR ROTATING SAID CARRIERS IN UNISON TO ROTATE THE SLIT,
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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) | 1971-10-22 | 1972-04-22 | 1972-10-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-10-22 | 1976-04-22 | 1976-10-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-10-22 | 1980-04-22 | 1980-10-22 | $7700.00 | Window Closed / Lapsed |