US3635762A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ultrasonic cleaning of a web of film
Assignee: Eastman Kodak Co
•
Filing: 1970-09-21
•
Granted: 1972-01-18
•
Expires: 1990-09-21
Abstract
Abstract Dirt particles are cleaned from a web of flexible material, such as photographic film or paper, by applying ultrasonic vibrations to a web in a direction transversely of the web while applying a solvent liquid to the web. The liquid can be applied by immersion of the web and ultrasonically vibrating apparatus in a pool, or by spraying the liquid onto the web as it passes over the apparatus in air. Vibrations are imparted by passing the web between a pair of shoulders defining a circular channel for the films.
Inventors
- 👤 Howard F Ott
- 👤 Jerry Carmen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 10:39
CPC Classifications
B; B08; B08B; B08B3/00; B08B3/04; B08B3/10; B08B3/12; B08B3/123; B08B7/00; B08B7/02; B08B7/026; B08B7/028
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
20 words
A method in accordance with claim 1 wherein said liquid is applied by immersing said web in a pool thereof.
Claim 2
Dependent Claim
22 words
A method in accordance with claim 1 wherein said liquid is applied by spraying onto at least one surface of said web.
Claim 3
Dependent Claim
20 words
A method in accordance with claim 1 wherein said liquid is applied by spraying onto both surfaces of said web.
Claim 4
Dependent Claim
25 words
A method in accordance with claim 1 wherein said liquid is applied by rotating a liquid-laden roller in contact with a surface of said web.
Claim 5
Dependent Claim
132 words
Apparatus for cleaning dirt particles from a web of flexible material by applying ultrasonic vibrations to said web in a direction transversely across the width thereof comprising, in combination: a longitudinally extending ultrasonically vibratable device having abutment means extending transversely from a side surface thereof; mechanism for advancing a web to be cleaned in a lengthwise direction transversely acrosS said device with at least one edge of said web contacting said abutment means; means for ultrasonically vibrating said device in a direction longitudinally thereof to impart ultrasonic vibrations to said advancing web through said contacting abutment means in a direction transversely across the width of said advancing web; and, means for simultaneously applying a volatile liquid solvent to said advancing web at the location of contact with said ultrasonically vibrating abutment means.
Claim 6
Dependent Claim
38 words
Apparatus in accordance with claim 6 wherein said liquid applying means is a tank containing a pool of said liquid, and wherein said abutment means is immersed in said pool whereby said web is immersed in said liquid.
Claim 7
Dependent Claim
20 words
Apparatus in accordance with claim 6 wherein said liquid applying means comprises means for spraying said liquid on said web.
Claim 8
Dependent Claim
33 words
Apparatus in accordance with claim 6 wherein said liquid applying means comprises a roller engaging a surface of said web, and means for conveying liquid to said roller and thence to said web.
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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) | 1975-01-17 | 1975-07-19 | 1976-01-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-17 | 1979-07-19 | 1980-01-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-17 | 1983-07-19 | 1984-01-18 | $7700.00 | Window Closed / Lapsed |