Patent US3762324A successfully refreshed from Google Patents.
US3762324A
Expired / Lapsed
US
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Viscous fluid thickness gauge
Assignee: AB Dick Co
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Filing: 1971-07-29
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Granted: 1973-10-02
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Expires: 1991-07-29
Abstract
Abstract A viscous fluid thickness gauge is disclosed capable of measuring the thickness of a viscous fluid on a roll while the roll is rotating at any speed. The thickness gauge can be continuously monitored and has an output capable for use as a control function. The invention is suitable for use with a printing machine to measure the ink thickness on a printing roll.
Inventors
- 👤 D Ivary
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 15:31
CPC Classifications
G; G01; G01B; G01B7/00; G01B7/02; G01B7/06; B; B41; B41F; B41F31/00; B41F31/005; B41F33/00; B41F33/0063; Y; Y10; Y10S; Y10S101/00; Y10S101/45
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
161 words
A method for measuring the thickness of an ink coating in a printing machine on first and second rotatably mounted rolls having caused the ink to coat both rolls uniformly through rolling contact, comprising: driving said second roll solely by contact with said first roll; allowing the axis of said second roll to move in accordance with changes in effective radii of said rolls due to changes in said ink coating thickness; detecting the angular speeds of said rolls by means of pulse generators rotating with said rolls; comparing the angular speed of said rolls as said speeds change relative to one another due to the changes in effective radii caused by ink thickness changes; determining the thickness of said ink coating as a function of the angular speeds of said rolls and the distance which the axis of said second roll moves; and increasing or decreasing the rate of ink application to said first roll to maintain the desired thickness.
Claim 2
Independent Claim
161 words
A method for measuring the thickness of an ink coating in a printing machine on first and second rotatably mounted rolls having caused the ink to coat both rolls uniformly through rolling contact, comprising: driving said second roll solely by contact with said first roll; allowing the axis of said second roll to move in accordance with changes in effective radii of said rolls due to changes in said ink coating thickness; detecting the angular speeds of said rolls by means of pulse generators rotating with said rolls; comparing the angular speed of said rolls as said speeds change relative to one another due to the changes in effective radii caused by ink thickness changes; determining the thickness of said ink coating as a function of the angular speeds of said rolls and the distance which the axis of said second roll moves; and increasing or decreasing the rate of ink application to said first roll to maintain the desired thickness.
References Cited (Backward Citations)
US1039564A
Cited
US1419253A
Cited
US2211657A
Cited
US2971461A
Cited
US3046935A
Cited
US3130303A
Cited
US3176307A
Cited
GB974565A
Cited
US3172208A
Cited
US3289581A
Cited
US3368399A
Cited
US3582969A
Cited
US3584579A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-10-01 | 1977-04-02 | 1977-10-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-01 | 1981-04-02 | 1981-10-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-01 | 1985-04-02 | 1985-10-02 | $7700.00 | Window Closed / Lapsed |