US3335385A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rectilinear actuator and potentiometer
Assignee: Beckman Coulter Inc
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Filing: 1964-07-29
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Granted: 1967-08-08
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Expires: 1984-07-29
Abstract
No abstract record available.
Inventors
- 👤 Wilford E Mower
- 👤 James H Pepper
- 👤 Douglas H Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 20:07
CPC Classifications
H; H01; H01C; H01C10/00; H01C10/30; H01C10/38
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
132 words
A RECTILINEAR ACTUATOR AND POTENTIOMETER COMBINATION COMPRISING: A HOUSING INCLUDING AN ELONGATED HIGHLY PERMEABLE BODY PORTION; AN ELONGATED MAGNET SUPPORTED WITHIN SAID HOUSING AND ESTABLISHING A RADIAL MAGNETIC FIELD THEREBETWEEN; GUIDE MEANS SUPPORTED BY SAID ELONGATED MAGNET AND FORMING WITH SAID BODY PORTION AN AIR GAP; A FREE RUNNING ARMATURE SUPPORTED BY SAID GUIDE MEANS WITHIN SAID AIR GAP; ACTUATING COIL MEANS CONNECTED TO SAID ARMATURE FOR MOVING SAID ARMATURE IN EITHER DIRECTION DEPENDENT UPON THE DIRECTION OF CURRENT FLOW WITHIN SAID COIL MEANS; A PAIR OF ELECTRICALLY CONDUCTIVE STRIP MEANS SUPPORTED WITHIN SAID HOUSING ADJACENT SAID ARMATURE; A PAIR OF SLIDERS CARRIED BY SAID ARMATURE AND RESPECTIVELY CONNECTED TO OPPOSITE ENDS OF SAID COIL, RESPECTIVE ONES OF SAID PAIR OF SLIDERS ENGAGING RESPECTIVE ONES OF SAID PAIR OF ELECTRICALLY CONDUCTIVE STRIPS;
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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) | 1970-08-07 | 1971-02-06 | 1971-08-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-08-07 | 1975-02-06 | 1975-08-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-08-07 | 1979-02-06 | 1979-08-08 | $7700.00 | Window Closed / Lapsed |