Patent US3249854A successfully refreshed from Google Patents.
US3249854A
Expired / Lapsed
US
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Displacement measuring device
Assignee: Whittaker Corp
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Filing: 1962-07-16
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Granted: 1966-05-03
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Expires: 1982-07-16
Abstract
No abstract record available.
Inventors
- 👤 Searle G Nevius
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 18:27
CPC Classifications
G; G01; G01D; G01D5/00; G01D5/12; G01D5/14; G01D5/20; G01D5/22
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
112 words
A DISPLACEMENT MEASURING DEVICE COMPRISING TWO RELATIVELY MOVABLE MEMBERS, CONDUCTING MEANS MOUNTED ON ONE OF SAID MEMBERS AND COMPRISING A TRANSMISSION LINE HAVING PARALLEL SEGMENTS CONNECTED IN SERIES, SIGNAL INPUT MEANS FOR DRIVING SAID CONDUCTING MEANS, AND CIRCUIT MEANS MOVABLE WITH THE OTHER OF SAID MEMBERS TRANSVERSELY OF SAID SEGMENTS AND ELECTRICALLY COUPLED TO SAID SEGMENTS TO OBTAIN AN OUTPUT SIGNAL CHANGING IN PHASE WITH RESPECT TO SAID INPUT SIGNAL IN PROPORTION TO THE MECHANICAL DISPLACEMENT BETWEEN SAID MEMBERS, THE FREQUENCY OF SAID SIGNAL INPUT MEANS BEING SUCH THAT ONE WAVE LENGTH ALONG SAID TRANSMISSION LINE WILL EFFECTIVELY BE JUST EQUAL TO, OR A SUBMULTIPLE OF, THE LENGTH OF SAID CIRCUIT MEANS.
References Cited (Backward Citations)
US2852733A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-05-02 | 1969-11-01 | 1970-05-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-05-02 | 1973-11-01 | 1974-05-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-05-02 | 1977-11-01 | 1978-05-03 | $7700.00 | Window Closed / Lapsed |