Patent US3270281A successfully refreshed from Google Patents.
US3270281A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for measuring and digitally indicating linear displacement between two relatively movable members
Assignee: Individual
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Filing: 1962-12-03
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Granted: 1966-08-30
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Expires: 1982-12-03
Abstract
No abstract record available.
Inventors
- 👤 John B Mandle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 19:15
CPC Classifications
G; G01; G01D; G01D5/00; G01D5/12; G01D5/243
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
198 words
A DISPLACEMENT TRANSDUCER FOR DETECTING DISPLACEMENT OF A MOVABLE MEMBER RELATIVE TO A REFERENCE POSITION, COMPRISING: A ROTATING MEMBER INCLUDING MEANS DEFINING A SINGLE HELICAL LINE EXTENDING AROUND AND ALONG THE AXIS OF ROTATION OF THE ROTATING MEMBER; MEANS FOR ROTATING THE ROTATING MEMBER AT A CONSTANT VELOCITY ABOUT ITS AXIS OF ROTATION; A FIRST DETECTOR POSITIONED TO DEFINE A REFERENCE POSITION FOR THE MOVABLE MEMBER THE FIRST DETECTOR BEING ARRANGED TO PRODUCE A FIRST ELECTRICAL SIGNAL WHEN A PORTION OF THE HELICAL LINE DEFINING MEANS PASSES THE FIRST DETECTOR; A SECOND DETECTOR MOUNTED ON THE MOVABLE MEMBER FOR MOVEMENT THEREWITH PARALLEL TO THE AXIS OF ROTATION OF THE ROTATING MEMBER, THE SECOND DETECTOR BEING ARRANGED TO PRODUCE A SECOND ELECTRICAL SIGNAL WHEN A PORTION OF THE HELICAL LINE DEFINING MEANS PASSES THE SECOND DETECTOR; DIGITAL COUNTING MEANS; MEANS FOR PULSING THE COUNTING MEANS A PREDETERMINED RATE; AND MEANS RECEIVING THE FIRST AND SECOND SIGNALS FOR INITRATING COUNTING OF THE DIGITAL COUNTING MEANS IN RESPONSE TO THE FIRST SIGNAL AND STOPPING THE COUNTING OF SAID DIGITAL COUNTING MEANS IN RESPONSE TO THE SECOND SIGNAL TO PROVIDE A DIGITAL INDICATION OF THE TIME BETWEEN THE FIRST AND SECOND SIGNALS.
Claim 2
Dependent Claim
198 words
A DISPLACEMENT TRANSDUCER FOR DETECTING DISPLACEMENT OF A MOVABLE MEMBER RELATIVE TO A REFERENCE POSITION, COMPRISING: A ROTATING MEMBER INCLUDING MEANS DEFINING A SINGLE HELICAL LINE EXTENDING AROUND AND ALONG THE AXIS OF ROTATION OF THE ROTATING MEMBER; MEANS FOR ROTATING THE ROTATING MEMBER AT A CONSTANT VELOCITY ABOUT ITS AXIS OF ROTATION; A FIRST DETECTOR POSITIONED TO DEFINE A REFERENCE POSITION FOR THE MOVABLE MEMBER THE FIRST DETECTOR BEING ARRANGED TO PRODUCE A FIRST ELECTRICAL SIGNAL WHEN A PORTION OF THE HELICAL LINE DEFINING MEANS PASSES THE FIRST DETECTOR; A SECOND DETECTOR MOUNTED ON THE MOVABLE MEMBER FOR MOVEMENT THEREWITH PARALLEL TO THE AXIS OF ROTATION OF THE ROTATING MEMBER, THE SECOND DETECTOR BEING ARRANGED TO PRODUCE A SECOND ELECTRICAL SIGNAL WHEN A PORTION OF THE HELICAL LINE DEFINING MEANS PASSES THE SECOND DETECTOR; DIGITAL COUNTING MEANS; MEANS FOR PULSING THE COUNTING MEANS A PREDETERMINED RATE; AND MEANS RECEIVING THE FIRST AND SECOND SIGNALS FOR INITRATING COUNTING OF THE DIGITAL COUNTING MEANS IN RESPONSE TO THE FIRST SIGNAL AND STOPPING THE COUNTING OF SAID DIGITAL COUNTING MEANS IN RESPONSE TO THE SECOND SIGNAL TO PROVIDE A DIGITAL INDICATION OF THE TIME BETWEEN THE FIRST AND SECOND SIGNALS.
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) | 1969-08-29 | 1970-02-28 | 1970-08-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-29 | 1974-02-28 | 1974-08-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-29 | 1978-02-28 | 1978-08-30 | $7700.00 | Window Closed / Lapsed |