Patent US3273182A successfully refreshed from Google Patents.
US3273182A
Expired / Lapsed
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Feed control device to feed tool spindle at rate of tool advance
Assignee: Milacron Inc
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Filing: 1961-03-06
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Granted: 1966-09-20
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Expires: 1981-03-06
Abstract
No abstract record available.
Inventors
- 👤 David I Mcdonald
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:18
CPC Classifications
B; B23; B23Q; B23Q15/00; B23Q15/007; B23Q15/12; B23Q11/00; B23Q11/04; B23Q15/013; B23Q15/02; H; H02; H02P; H02P5/00; H02P5/46; H02P5/48; H02P5/485; G; G05; G05B; G05B2219/00; G05B2219/30; G05B2219/45; G05B2219/45216; G05B2219/49; G05B2219/49291; Y; Y10; Y10T; Y10T408/00; Y10T408/08; Y10T408/16; Y10T408/17; Y10T409/00; Y10T409/30; Y10T409/30084; Y10T409/302968; Y10T409/303248; Y10T82/00; Y10T82/25; Y10T82/2552; Y10T82/2554
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
122 words
A DEVICE FOR AUTOMATICALLY SYNCHRONIZING THE FEEDING MOVEMENT OF A TAP WITH ITS SPEED OF ROTATION COMPRISING A WORK SUPPORT FOR HOLDING A WORKPIECE TO BE TAPPED, A POWER OPERATED SPINDLE DISPOSED ADJACENT SAID WORK SUPPORT, A TAP HOLDER SUPPORTED IN SAID SPINDLE FOR LIMITED AXIAL MOVEMENT RELATIVE THERETO, A DIFFERENTIAL TRANSFORMER, MEANS OPERATIVELY CONNECTING SAID TRANSFORMER WITH SAID HOLDER SO AS TO CAUSE A SIGNAL TO BE PRODUCED BY SAID TRANSFORMER UPON AXIAL DISPLACEMENT OF SAID HOLDER IN SAID SPINDLE, AND A SERVOMECHANISM CONTROLLED BY THE SIGNAL FROM SAID TRANSFORMER FOR FEEDING SAID SPINDLE RELATIVE TO SAID WORK SUPPORT AT A RATE EQUAL TO THE RATE AT WHICH THE TAP THREADS ITS WAY INTO THE WORKPIECE UPON ROTATION TO THE SPINDLE.
Claim 2
Independent Claim
122 words
A DEVICE FOR AUTOMATICALLY SYNCHRONIZING THE FEEDING MOVEMENT OF A TAP WITH ITS SPEED OF ROTATION COMPRISING A WORK SUPPORT FOR HOLDING A WORKPIECE TO BE TAPPED, A POWER OPERATED SPINDLE DISPOSED ADJACENT SAID WORK SUPPORT, A TAP HOLDER SUPPORTED IN SAID SPINDLE FOR LIMITED AXIAL MOVEMENT RELATIVE THERETO, A DIFFERENTIAL TRANSFORMER, MEANS OPERATIVELY CONNECTING SAID TRANSFORMER WITH SAID HOLDER SO AS TO CAUSE A SIGNAL TO BE PRODUCED BY SAID TRANSFORMER UPON AXIAL DISPLACEMENT OF SAID HOLDER IN SAID SPINDLE, AND A SERVOMECHANISM CONTROLLED BY THE SIGNAL FROM SAID TRANSFORMER FOR FEEDING SAID SPINDLE RELATIVE TO SAID WORK SUPPORT AT A RATE EQUAL TO THE RATE AT WHICH THE TAP THREADS ITS WAY INTO THE WORKPIECE UPON ROTATION TO THE SPINDLE.
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) | 1969-09-19 | 1970-03-21 | 1970-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-19 | 1974-03-21 | 1974-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-19 | 1978-03-21 | 1978-09-20 | $7700.00 | Window Closed / Lapsed |