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US3714715A Expired / Lapsed US ⏱️ 0.0 years remaining

Grinding control system

Assignee: Saint Gobain Abrasives Inc
•
Filing: 1971-05-25
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Granted: 1973-02-06
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Expires: 1991-05-25
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Abstract

Abstract A METHOD FOR DETERMINING AND CONTROLLING THE DISTANCE BETWEEN A VARIABLE SURFACE AND A POINT ON A DEVICE WHICH CONTACTS THE VARIABLE SURFACE, REQUIRING MEASUREMENT OR CONTROL SOLELY OF QUANTITIES RELATING TO THE CONTACTING DEVICE WHERE A REFERENCE POINT A ON THE CONTACTING DEVICE IS CONSTRAINED TO MOVE ALONG A LINE A'' AND A POINT OF CONTACT P FROM THE CONTACTING DEVICE IS CONSTRAINED TO FOLLOW THE VARIABLE SURFACE AND THE ANGLE 0 BETWEEN THE LINE OF CONSTRAINT A'' AND A RADIAL LINE R BETWEEN THE POINTS A AND P HAS A NON-ZERO VALUE. THE METHOD REQUIRES THE MEASUREMENT OF AT LEAST FOUR OF THE FOLLOWING FIVE QUANTITIES: THE LENGTH OF LINE A'' FROM REFERENCE PLANE TO POINT A, THE LENGTH OF THE RADIAL LINE R, THE ANGLE 0, THE FORCE F ACTING UPON THE REFERENCE POINT A DUE TO THE CONTACT OF THE CONTACTING DEVICE WITH THE VARIABLE SURFACE MEASURED ALONG THE LINE OF CONSTRAINT A'', AND THE TORQUE T DUE TO THE CONTACT WITH THE VARIABLE SURFACE WHICH ACTS AROUND THE POINT. ONCE THESE QUANTITIES ARE MEASURED, THE DISTANCE B BETWEEN THE VARIABLE SURFACE AND THE POINT A ALONG THE LINE OF CONSTRAINT A'' MAY BE DETERMINED BY USING THE EQUATIONS B=A''+R COS 0 AND T=FR SIN 0. CONTROL OF THE QUANTITIES SHOWN IN THE ABOVE EQUATIONS CAN OF COURSE, CONTROL THE DISTANCE B. D R A W I N G

Inventors

  • 👤 L Coes

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-24 09:45
CPC Classifications
G; G01; G01B; G01B7/00; G01B7/28; G01B7/001

Claims Analysis

Total Claims: 0
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References Cited (Backward Citations)

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USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1976-02-06 1976-08-07 1977-02-06 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1980-02-06 1980-08-07 1981-02-06 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1984-02-06 1984-08-07 1985-02-06 $7700.00 Window Closed / Lapsed

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