Patent US3142120A successfully refreshed from Google Patents.
US3142120A
Expired / Lapsed
US
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Measuring machine or precision machine tool
Assignee: Societe Genevoise dInstruments de Physique
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Filing: 1962-09-20
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Granted: 1964-07-28
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Expires: 1982-09-20
Abstract
No abstract record available.
Inventors
- 👤 Andre H Mottu
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:55
CPC Classifications
G; G01; G01B; G01B5/00; G01B5/0011; G01B5/0014; B; B23; B23Q; B23Q11/00; B23Q11/0003; Y; Y10; Y10S; Y10S82/00; Y10S82/90; Y10T; Y10T82/00; Y10T82/25; Y10T82/2531; Y10T82/2549
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
162 words
A MEASURING MACHINE, COMPRISING A MOVABLE ELEMENT, AND A DEVICE FOR LINEAR MEASUREMENT OF THE POSITIONS OCCUPIED BY SAID MOVABLE ELEMENT ALONG ITS PATH, SAID DEVICE INCLUDING A LINEAR REFERENCE ELEMENT SERVING AS A STANDARD, AT LEAST TWO TEMPERATURE DETECTORS TO PROVIDE INFORMATION CONCERNING THE TEMPERATURES OF A WORKPIECE AND OF THE STANDARD, A DIFFERENTIAL DEVICE, MEANS TO ADJUST SAID DIFFERENTIAL DEVICE IN ACCORDANCE WITH THE INFORMATION PROVIDED BY SAID TEMPERATURE DETECTORS AND THE COEFFICIENTS OF THERMAL EXPANSION OF THE WORKPIECE AND SAID STANDARD, SAID DIFFERENTIAL DEVICE INCLUDING A MEMBER ADAPTED TO BE DISPLACED IN ACCORDANCE WITH SAID ADJUSTMENTS, THE AMOUNT OF DISPLACEMENT BEING A FUNCTION OF THE TEMPERATURES AND COEFFICIENTS OF EXPANSION OF BOTH THE WORKPIECE AND STANDARD, AND INDICATING MEANS CONTROLLED BY DISPLACEMENT OF SAID MEMBER OF THE DIFFERENTIAL DEVICE TO INDICATE THE REAL VALUES OF THE MOVEMENTS OF SAID MOVABLE ELEMENT, REDUCED TO A REFERENCE TEMPERATURE EVEN WHEN THE TEMPERATURE OF THE WORKPIECE AND OF THE STANDARD DIFFER THEREFROM.
Claim 2
Dependent Claim
162 words
A MEASURING MACHINE, COMPRISING A MOVABLE ELEMENT, AND A DEVICE FOR LINEAR MEASUREMENT OF THE POSITIONS OCCUPIED BY SAID MOVABLE ELEMENT ALONG ITS PATH, SAID DEVICE INCLUDING A LINEAR REFERENCE ELEMENT SERVING AS A STANDARD, AT LEAST TWO TEMPERATURE DETECTORS TO PROVIDE INFORMATION CONCERNING THE TEMPERATURES OF A WORKPIECE AND OF THE STANDARD, A DIFFERENTIAL DEVICE, MEANS TO ADJUST SAID DIFFERENTIAL DEVICE IN ACCORDANCE WITH THE INFORMATION PROVIDED BY SAID TEMPERATURE DETECTORS AND THE COEFFICIENTS OF THERMAL EXPANSION OF THE WORKPIECE AND SAID STANDARD, SAID DIFFERENTIAL DEVICE INCLUDING A MEMBER ADAPTED TO BE DISPLACED IN ACCORDANCE WITH SAID ADJUSTMENTS, THE AMOUNT OF DISPLACEMENT BEING A FUNCTION OF THE TEMPERATURES AND COEFFICIENTS OF EXPANSION OF BOTH THE WORKPIECE AND STANDARD, AND INDICATING MEANS CONTROLLED BY DISPLACEMENT OF SAID MEMBER OF THE DIFFERENTIAL DEVICE TO INDICATE THE REAL VALUES OF THE MOVEMENTS OF SAID MOVABLE ELEMENT, REDUCED TO A REFERENCE TEMPERATURE EVEN WHEN THE TEMPERATURE OF THE WORKPIECE AND OF THE STANDARD DIFFER THEREFROM.
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) | 1967-07-28 | 1968-01-27 | 1968-07-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-07-28 | 1972-01-27 | 1972-07-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-07-28 | 1976-01-27 | 1976-07-28 | $7700.00 | Window Closed / Lapsed |