US3315367A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electronic spherometers
Assignee: Strasbaugh Inc
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Filing: 1964-11-27
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Granted: 1967-04-25
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Expires: 1984-11-27
Abstract
No abstract record available.
Inventors
- 👤 Thomas A Walsh
- 👤 Ray H Strasbaugh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 14:47
CPC Classifications
G; G01; G01B; G01B7/00; G01B7/28; G01B7/286
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
209 words
A DEVICE OF THE CHARACTER DESCRIBED, ADAPTED FOR MEASURING CURVATURE OR SURFACE IRREGULARITIES OF A WORKPIECE CONTACTED THEREBY, THE DEVICE COMPRISING IN COMBINATION: A LONGITUDINAL HOUSING; WORK-CONTACT MEANS DISPOSED ADJACENT ONE END OF SAID HOUSING AND CHARACTERIZED BY THREE CONTACT ELEMENTS, MUTUALLY SPACED FROM EACH OTHER EQUIDISTANT IN AN ANNULAR PLANE WHICH IS GENERALLY PERPENDICULAR TO SAID HOUSING; A LONGITUDINALLY ADJUSTABLE PROBE, RECIPROCABLY CARRIED BY SAID HOUSING AND HAVING A CONTACT TIP PROJECTING THEREFROM PERPENDICULAR TO SAID ANNULAR PLANE AND SELECTIVELY DISPLACEABLE ON EITHER SIDE OF THE PLANE OF THE THREE CONTACT ELEMENTS, THE CONTACT TIP IN SUCH ALTERNATE POSITIONS THUS BEING ADAPTED TO ABUT THE CONTINUOUS SURFACE OF A CORRESPONDINGLY SHAPED WORKPIECE WHEN THE LATTER IS LOCATED JOINTLY AGAINST THE CONTACT TIP AND AGAINST THE THREE CONTACT ELEMENTS; CALIBRATED POSITIONING MEANS OPERATIVELY COUPLED TO THE PROBE FOR LONGITUDINALLY ADJUSTING THE SAME RELATIVE TO THE PLANE OF THE CONTACT ELEMENTS, WHEREBY THE PROBE MAY BE LOCATED TO DEFINE A DESIGNATED CONVEX OR CONCAVE CURVATURE OF SAID CONTINUOUS SURFACE IN CONJUNCTION WITH SAID TRIO OF CONTACT ELEMENTS; AND ELECTRICALLY-ACTIVATED INDICATOR MEANS ADAPTED TO REGISTER LONGITUDINAL DISPLACEMENT OF THE RECIPROCABLE CONTACT TIP IN EITHER DIRECTION FROM A PREDETERMINED AND VARIABLY SET REFERENCE POSITION RELATIVE TO THE CURVATURE OF SAID CONTINUOUS SURFACE.
Claim 2
Independent Claim
209 words
A DEVICE OF THE CHARACTER DESCRIBED, ADAPTED FOR MEASURING CURVATURE OR SURFACE IRREGULARITIES OF A WORKPIECE CONTACTED THEREBY, THE DEVICE COMPRISING IN COMBINATION: A LONGITUDINAL HOUSING; WORK-CONTACT MEANS DISPOSED ADJACENT ONE END OF SAID HOUSING AND CHARACTERIZED BY THREE CONTACT ELEMENTS, MUTUALLY SPACED FROM EACH OTHER EQUIDISTANT IN AN ANNULAR PLANE WHICH IS GENERALLY PERPENDICULAR TO SAID HOUSING; A LONGITUDINALLY ADJUSTABLE PROBE, RECIPROCABLY CARRIED BY SAID HOUSING AND HAVING A CONTACT TIP PROJECTING THEREFROM PERPENDICULAR TO SAID ANNULAR PLANE AND SELECTIVELY DISPLACEABLE ON EITHER SIDE OF THE PLANE OF THE THREE CONTACT ELEMENTS, THE CONTACT TIP IN SUCH ALTERNATE POSITIONS THUS BEING ADAPTED TO ABUT THE CONTINUOUS SURFACE OF A CORRESPONDINGLY SHAPED WORKPIECE WHEN THE LATTER IS LOCATED JOINTLY AGAINST THE CONTACT TIP AND AGAINST THE THREE CONTACT ELEMENTS; CALIBRATED POSITIONING MEANS OPERATIVELY COUPLED TO THE PROBE FOR LONGITUDINALLY ADJUSTING THE SAME RELATIVE TO THE PLANE OF THE CONTACT ELEMENTS, WHEREBY THE PROBE MAY BE LOCATED TO DEFINE A DESIGNATED CONVEX OR CONCAVE CURVATURE OF SAID CONTINUOUS SURFACE IN CONJUNCTION WITH SAID TRIO OF CONTACT ELEMENTS; AND ELECTRICALLY-ACTIVATED INDICATOR MEANS ADAPTED TO REGISTER LONGITUDINAL DISPLACEMENT OF THE RECIPROCABLE CONTACT TIP IN EITHER DIRECTION FROM A PREDETERMINED AND VARIABLY SET REFERENCE POSITION RELATIVE TO THE CURVATURE OF SAID CONTINUOUS SURFACE.
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) | 1970-04-24 | 1970-10-24 | 1971-04-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-04-24 | 1974-10-24 | 1975-04-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-04-24 | 1978-10-24 | 1979-04-25 | $7700.00 | Window Closed / Lapsed |