US3421080A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Linear velocity measuring device for ram pistons
Assignee: CALDWELL RESEARCH CORP
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Filing: 1966-10-21
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Granted: 1969-01-07
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Expires: 1986-10-21
Abstract
No abstract record available.
Inventors
- 👤 Edwin T Lightcap
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 09:11
CPC Classifications
G; G01; G01P; G01P3/00; G01P3/42; G01P3/50
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
176 words
A VELOCITY MEASURING DEVICE FOR RAM PISTONS COMPRISING; A SHAFT SECURED TO THE RAM AND SLIDABLY POSITIONED IN A CYLINDER FOR MOVEMENT WITH THE RAM, SAID SHAFT HAVING TWO ANNULAR CHANNELS SPACED ALONG THE LENGTH OF THE SHAFT TWO MAGNETIC SENSING DEVICES SECURED TO AND SPACED ALONG THE LENGTH OF THE CYLINDER AND POSITIONED ADJACENT TO THE SHAFT FOR SENSING THE PASSAGE OF THE CHANNELS WHEN THE RAM IS MOVED RELATIVE TO THE CYLINDER; A CATHODE RAY OSCILLOGRAPH INCLUDING A FOCUSSED ELECTRON BEAM, A FLUORESCENT SCREEN, A FIRST DEFLECTION MEANS FOR MOVING THE ELECTROL BEAM HORIZONTALLY, AND A SECOND DEFLECTION MEANS FOR MOVING THE ELECTRON BEAM VERTICALLY; A FIRST COUPLING MEANS BETWEEN ONE OF THE SENSING DEVICES AND SAID FIRST DEFLECTION MEANS FOR STARTING THE ELECTRON BEAM TO MOVE IN A HORIZONTAL DIRECTION WHEN ONE OF SAID CHANNELS PASSES THE SENSING DEVICE; AND A SECOND COUPLING MEANS BETWEEN THE OTHER SENSING DEVICE AND THE SECOND DEFLECTION MEANS FOR MOVING THE ELECTRON BEAM IN A VERTICAL DIRECTION WHEN THE OTHER ANNULAR CHANNEL PASSES THE OTHER SENSING DEVICE.
Claim 2
Dependent Claim
176 words
A VELOCITY MEASURING DEVICE FOR RAM PISTONS COMPRISING; A SHAFT SECURED TO THE RAM AND SLIDABLY POSITIONED IN A CYLINDER FOR MOVEMENT WITH THE RAM, SAID SHAFT HAVING TWO ANNULAR CHANNELS SPACED ALONG THE LENGTH OF THE SHAFT TWO MAGNETIC SENSING DEVICES SECURED TO AND SPACED ALONG THE LENGTH OF THE CYLINDER AND POSITIONED ADJACENT TO THE SHAFT FOR SENSING THE PASSAGE OF THE CHANNELS WHEN THE RAM IS MOVED RELATIVE TO THE CYLINDER; A CATHODE RAY OSCILLOGRAPH INCLUDING A FOCUSSED ELECTRON BEAM, A FLUORESCENT SCREEN, A FIRST DEFLECTION MEANS FOR MOVING THE ELECTROL BEAM HORIZONTALLY, AND A SECOND DEFLECTION MEANS FOR MOVING THE ELECTRON BEAM VERTICALLY; A FIRST COUPLING MEANS BETWEEN ONE OF THE SENSING DEVICES AND SAID FIRST DEFLECTION MEANS FOR STARTING THE ELECTRON BEAM TO MOVE IN A HORIZONTAL DIRECTION WHEN ONE OF SAID CHANNELS PASSES THE SENSING DEVICE; AND A SECOND COUPLING MEANS BETWEEN THE OTHER SENSING DEVICE AND THE SECOND DEFLECTION MEANS FOR MOVING THE ELECTRON BEAM IN A VERTICAL DIRECTION WHEN THE OTHER ANNULAR CHANNEL PASSES THE OTHER SENSING DEVICE.
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) | 1972-01-07 | 1972-07-08 | 1973-01-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-01-07 | 1976-07-08 | 1977-01-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-01-07 | 1980-07-08 | 1981-01-07 | $7700.00 | Window Closed / Lapsed |