US3890892A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ultrasonic marking
Assignee: Eastman Kodak Co
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Filing: 1972-11-09
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Granted: 1975-06-24
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Expires: 1992-11-09
Abstract
Abstract A method for embossing indicia such as numbers, letters, or other symbols into an article of malleable material such as a thin sheet or web by providing an anvil which has the appropriate indicia defined by a plurality of individual protuberant dots, positioning the article against the anvil in contact with the protuberant dots, and applying an ultrasonically vibrating horn to the article and forcing it against the dots to form indentations. Relative translational movement can be effected between the horn and the article when the indicia cover a greater area than the surface of the horn. The horn can be non-rotating, or can rotate along the surface of the article. The method is particularly applicable to the marking of photographic film and paper.
Inventors
- 👤 Guenter H Loose
- 👤 William J Diesel
- 👤 Thadeus S Graczyk
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 04:11
CPC Classifications
B; B29; B29C; B29C66/00; B29C66/80; B29C66/81; B29C66/816; B29C66/8161; B29C59/00; B29C59/02; B29C59/04; B29C65/00; B29C65/02; B29C65/08; B29C65/081; B29C65/083; B29C65/085; B29C65/74; B29C65/743; B29C65/7443; B29C65/749; B29C66/01; B29C66/05; B29C66/306; B29C66/3062; B29C66/30623; B29C66/70; B29C66/73; B29C66/739; B29C66/7392; B29C66/73921; B29C66/814; B29C66/8141; B29C66/81433; B29C66/83; B29C66/836; B29C66/8362; B44; B44B; B44B5/00; B44B5/0061; B44B5/0066; B44C; B44C1/00; B44C1/24; G; G03; G03B; G03B21/00; G03B21/14; G03B21/32; B29C65/086; B29C66/30621; B29C66/71; B29C66/90; B29C66/95; B29C66/951; B29C66/9513; B29K; B29K2001/00; B29K2001/08; B29K2001/12
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
146 words
A method for embossing indicia into a thin sheet of malleable thermoplastic material which comprises: providing an anvil having an indicia defined thereon by a plurality of individual spaced dot-like protuberances projecting from the surface of said anvil; positioning a thermoplastic material over the anvil with one side of said material resting upon and in engagement with the dot-like protuberances; and applying ultrasonically vibrating pressure impulses generated by an ultrasonic vibrating device comprising a transducer and horn to the opposite side of said thermoplastic material for applying heat and pressure to said material causing said material in register with and resting on the protuberances to melt, be displaced and to resolidify forming a plurality of clear, undistorted, indentations extending partially through said material and which due to the reduced thickness at said indentations are substantially transparent and clearly visible in the presence of a weak light.
Claim 2
Independent Claim
146 words
A method for embossing indicia into a thin sheet of malleable thermoplastic material which comprises: providing an anvil having an indicia defined thereon by a plurality of individual spaced dot-like protuberances projecting from the surface of said anvil; positioning a thermoplastic material over the anvil with one side of said material resting upon and in engagement with the dot-like protuberances; and applying ultrasonically vibrating pressure impulses generated by an ultrasonic vibrating device comprising a transducer and horn to the opposite side of said thermoplastic material for applying heat and pressure to said material causing said material in register with and resting on the protuberances to melt, be displaced and to resolidify forming a plurality of clear, undistorted, indentations extending partially through said material and which due to the reduced thickness at said indentations are substantially transparent and clearly visible in the presence of a weak light.
Claim 3
Dependent Claim
38 words
The invention according to claim 1 comprising the step of effecting relative translational movement between the vibrating device and the article and anvil as a unit substantially simultaneously with the step of applying the ultrasonically vibrating pressure impulses.
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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) | 1978-06-23 | 1978-12-23 | 1979-06-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-06-23 | 1982-12-23 | 1983-06-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-06-23 | 1986-12-23 | 1987-06-24 | $7700.00 | Window Closed / Lapsed |