US3304832A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Filter switching and bias adjusting means for use in a colorimeter
Assignee: Kollmorgen Corp
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Filing: 1963-04-19
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Granted: 1967-02-21
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Expires: 1983-04-19
Abstract
No abstract record available.
Inventors
- 👤 Edward L Lewis
- 👤 Vartanian Vartan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 16:39
CPC Classifications
G; G01; G01J; G01J3/00; G01J3/46; G01J3/50; G01J3/51
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
148 words
IN A COLOR MEASURING DEVICE INCLUDING A PLURALITY OF SELECTABLE OPTICAL FILTERS AND SIGNAL MEASURING MEANS, A FILTER SWITCHING DEVICE COMPRISING A SHAFT, A ROTATABLE MEMBER CARRYING A PLURALITY OF FILTERS THEREIN SECURED TO ONE END OF SAID SHAFT, A HUB SECURED TO THE OTHER END OF SAID SHAFT, A ROTATABLE POSITION ADJUSTING MEMBER MOUNTED ON SAID HUB AND AXIALLY MOVABLE RELATIVE TO SAID HUB, SPRING MEANS MOUNTED BETWEEN SAID HUB AND SAID ADJUSTING MEMBER, A SNAP RING ON SAID HUB TO LIMIT AXIAL MOVEMENT OF SAID ADJUSTING MEMBER, A PLURALITY OF ADJUSTING SCREWS LOCATED IN SAID ADJUSTING MEMBER, A POTENTIOMETER HAVING A SLIDE MOUNTED FOR SELECTIVE ENGAGEMENT BY SAID SCREWS, SAID POTENTIOMETER BEING ELECTRICALLY ENERGIZED TO SUPLY A BIASING SIGNAL TO THE SIGNAL MEASURING MEANS, AND MEANS FOR RESTRAINING SAID ADJUSTING MEMBER AGAINST ROTATION WHEN ONE OF SAID ADJUSTING SCREWS IS IN CONTACT WITH THE POTENTIOMETER SLIDE.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-02-20 | 1970-08-22 | 1971-02-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-02-20 | 1974-08-22 | 1975-02-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-02-20 | 1978-08-22 | 1979-02-21 | $7700.00 | Window Closed / Lapsed |