US3147574A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dimensional control device
Assignee: Hupp Corp
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Filing: 1962-06-29
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Granted: 1964-09-08
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Expires: 1982-06-29
Abstract
No abstract record available.
Inventors
- 👤 Pointe Joseph Leo La
- 👤 Jr John J Fannon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 00:59
CPC Classifications
B; B24; B24B; B24B49/00; B24B49/02; B24B49/04; B23; B23Q; B23Q15/00; B23Q15/007; B23Q15/013; B23Q15/02
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
164 words
A DIMENSIONAL CONTROL DEVICE COMPRISING A LINEAR VARIABLE DIFFERENTIAL TRANSFORMER INCLUDING A FORM, A PAIR OF SECONDARY COILS MOUNTED IN SPACED APART RELATIONSHIP ON THE FORM, A PRIMARY COIL MOUNTED ON THE FORM BETWEEN THE SECONDARY COILS FOR INDUCING A VOLTAGE IN THE SECONDARY COILS, SAID SECONDARY COILS BEING CONNECTED IN SERIES OPPOSITION, MEANS FOR TAKING THE OUTPUT OF THE SECONDARY COILS, MEANS FOR ASSOCIATING A SURFACE OF A METALLIC WORKPIECE ADJACENT TO ONE OF THE SECONDARY COILS TO ESTABLISH AN AIR GAP THEREBETWEEN, SAID METALLIC WORKPIECE ALTERING THE INDUCED VOLTAGE IN SAID ONE ADJACENT SECONDARY COIL, MEANS FOR MACHINING MATERIAL FROM THE METALLIC WORKPIECE TO THEREBY INCREASE THE AIR GAP BETWEEN THE SURFACE OF THE METALLIC WORKPIECE AND SAID ONE ADJACENT SECONDARY COIL, MEANS TO RECEIVE THE DIFFERENCE IN OUTPUT VOLTAGE THUS CREATED IN SAID TWO SECONDARY COILS, AND MEANS TO DISCONTINUE OPERATION OF THE MEANS FOR MACHINING MATERIAL FROM THE METALLIC WORKPIECE WHEN THE AIR GAP HAS INCREASED TO A PREDETERMINED SIZE.
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) | 1967-09-08 | 1968-03-09 | 1968-09-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-09-08 | 1972-03-09 | 1972-09-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-09-08 | 1976-03-09 | 1976-09-08 | $7700.00 | Window Closed / Lapsed |