US3158076A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control device for zoom lens systems
Assignee: Individual
•
Filing: 1962-11-30
•
Granted: 1964-11-24
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Expires: 1982-11-30
Abstract
No abstract record available.
Inventors
- 👤 Frank G Back
- 👤 Willi H Schrader
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:15
CPC Classifications
G; G02; G02B; G02B7/00; G02B7/02; G02B7/04; G02B7/08; G03; G03B; G03B17/00; G03B17/02; G03B17/12; G03B17/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
186 words
A CONTROL DEVICE FOR A MECHANICALLY COMPENSATED ZOOM LENS SYSTEM HAVING A ROTATABLE BARREL FOR FOCUSING AND A ROTATABLE BARREL FOR DRIVING THE MOVABLE ZOOM LENS ELEMENTS COMPRISING A HOUSING, A LONGITUDINALLY SLIDABLE AND ROTATABLE CONTROL ROD IN SAID HOUSING, A COLLAR PORTION ON SAID CONTROL ROD HAVING A NON-CIRCULAR CROSS-SECTIONAL SHAPE, A FIXED BUSHING JOURNALED WITHIN THE HOUSING TO SLIDABLY RECEIVE THE COLLAR PORTION OF THE ROD AND HAVING A NON-CIRCULAR OPENING THEREIN TO PREVENT ROTATION OF THE COLLAR WITHIN THE BUSHING, A WORM SECTION ON THE CONTROL ROD, A FIRST GEAR MEANS DRIVEN BY THE WORM SECTION PORTION ON THE CONTROL ROD, A RING GEAR SECURED TO THE ROTATABLE ZOOM BARREL AND OPERATIVELY COUPLED TO THE FIRST GEAR MEANS TO ROTATE THE SAID ROTATABLE ZOOM BARREL, A SECOND GEAR MEANS CARRIED BY THE FIXED BUSHING AND RESPONSIVE TO THE ROTARY MOTION OF THE CONTROL ROD, INTERMEDIATE DRIVEN MEANS COUPLED TO THE SECOND GEAR MEANS, AN ELONGATED GEAR ON THE ROTATABLE FOCUSING BARREL AND MEANS INCLUDING THE DRIVEN MEANS TO ROTATE THE ELONGATED GEAR OF THE ROTATABLE FOCUSING BARREL TO FOCUS THE VARIFOCAL LENS SYSTEM.
Claim 2
Dependent Claim
186 words
A CONTROL DEVICE FOR A MECHANICALLY COMPENSATED ZOOM LENS SYSTEM HAVING A ROTATABLE BARREL FOR FOCUSING AND A ROTATABLE BARREL FOR DRIVING THE MOVABLE ZOOM LENS ELEMENTS COMPRISING A HOUSING, A LONGITUDINALLY SLIDABLE AND ROTATABLE CONTROL ROD IN SAID HOUSING, A COLLAR PORTION ON SAID CONTROL ROD HAVING A NON-CIRCULAR CROSS-SECTIONAL SHAPE, A FIXED BUSHING JOURNALED WITHIN THE HOUSING TO SLIDABLY RECEIVE THE COLLAR PORTION OF THE ROD AND HAVING A NON-CIRCULAR OPENING THEREIN TO PREVENT ROTATION OF THE COLLAR WITHIN THE BUSHING, A WORM SECTION ON THE CONTROL ROD, A FIRST GEAR MEANS DRIVEN BY THE WORM SECTION PORTION ON THE CONTROL ROD, A RING GEAR SECURED TO THE ROTATABLE ZOOM BARREL AND OPERATIVELY COUPLED TO THE FIRST GEAR MEANS TO ROTATE THE SAID ROTATABLE ZOOM BARREL, A SECOND GEAR MEANS CARRIED BY THE FIXED BUSHING AND RESPONSIVE TO THE ROTARY MOTION OF THE CONTROL ROD, INTERMEDIATE DRIVEN MEANS COUPLED TO THE SECOND GEAR MEANS, AN ELONGATED GEAR ON THE ROTATABLE FOCUSING BARREL AND MEANS INCLUDING THE DRIVEN MEANS TO ROTATE THE ELONGATED GEAR OF THE ROTATABLE FOCUSING BARREL TO FOCUS THE VARIFOCAL LENS SYSTEM.
References Cited (Backward Citations)
US2984154A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-11-24 | 1968-05-25 | 1968-11-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-11-24 | 1972-05-25 | 1972-11-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-11-24 | 1976-05-25 | 1976-11-24 | $7700.00 | Window Closed / Lapsed |