Patent US3231813A successfully refreshed from Google Patents.
US3231813A
Expired / Lapsed
US
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Apparatus for detecting gear wheel dimensional variations
Assignee: Motors Liquidation Co
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Filing: 1961-03-10
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Granted: 1966-01-25
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Expires: 1981-03-10
Abstract
No abstract record available.
Inventors
- 👤 George M Vanator
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 22:29
CPC Classifications
G; G01; G01B; G01B7/00; G01B7/28; G01N; G01N27/00; G01N27/72; G01N27/82
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
120 words
APPARATUS FOR MEASURING THE AMOUNT OF HELIX ANGLE VARIATION IN GEAR WHEELS AND THE LIKE COMPRISING THE COMBINATION OF MEANS ROTATABLY SUPPORTING A TEST GEAR WHEEL ON ITS ROTATIONAL AXIS, DRIVE MEANS ROTATING THE GEAR WHEEL ON ITS ROTATIONAL AXIS, A PAIR OF ELECTRICAL PICKUPS SPACED SLIGHTLY FROM AND POSITIONED OVER THE TIPS OF DIFFERENT GEAR WHEEL TEETH, THE PICKUPS BEING DISPOSED IN A PLANE TRANSVERSE TO THE ROTATIONAL AXIS OF THE GEAR WHEEL AND GENERATING ALTERNATING ELECTRICAL SIGNALS DUE TO RELATIVE MOVEMENT BETWEEN THE PICKUPS AND THE GEAR WHEEL, THE ALTERNATING ELECTRICAL SIGNALS HAVING A PHASE REFLECTING THE HELIX ANGLE OF A TOOTH, AND MEANS PHASE COMPARING THE ELECTRICAL SIGNALS AND DEVELOPING A CORRESPONDING OUTPUT REFLECTING HELIX ANGLE VARIATIONS.
Claim 2
Dependent Claim
120 words
APPARATUS FOR MEASURING THE AMOUNT OF HELIX ANGLE VARIATION IN GEAR WHEELS AND THE LIKE COMPRISING THE COMBINATION OF MEANS ROTATABLY SUPPORTING A TEST GEAR WHEEL ON ITS ROTATIONAL AXIS, DRIVE MEANS ROTATING THE GEAR WHEEL ON ITS ROTATIONAL AXIS, A PAIR OF ELECTRICAL PICKUPS SPACED SLIGHTLY FROM AND POSITIONED OVER THE TIPS OF DIFFERENT GEAR WHEEL TEETH, THE PICKUPS BEING DISPOSED IN A PLANE TRANSVERSE TO THE ROTATIONAL AXIS OF THE GEAR WHEEL AND GENERATING ALTERNATING ELECTRICAL SIGNALS DUE TO RELATIVE MOVEMENT BETWEEN THE PICKUPS AND THE GEAR WHEEL, THE ALTERNATING ELECTRICAL SIGNALS HAVING A PHASE REFLECTING THE HELIX ANGLE OF A TOOTH, AND MEANS PHASE COMPARING THE ELECTRICAL SIGNALS AND DEVELOPING A CORRESPONDING OUTPUT REFLECTING HELIX ANGLE VARIATIONS.
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) | 1969-01-24 | 1969-07-26 | 1970-01-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-24 | 1973-07-26 | 1974-01-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-24 | 1977-07-26 | 1978-01-25 | $7700.00 | Window Closed / Lapsed |