US3922086A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of providing photocomposition indicia
Assignee: AB Dick Co
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Filing: 1974-09-23
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Granted: 1975-11-25
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Expires: 1994-09-23
Abstract
Abstract An Indicia bearing disc of flexible plastic mounted and juxtaposed to a transparent mating solid disc rotated to provide rigidity to the flexible disc and method of projecting light onto the indicia for photocomposition.
Inventors
- 👤 Alfred H Freericks
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 14:58
CPC Classifications
B; B41; B41B; B41B17/00; B41B17/18; B41B17/20; B41B17/24; B41B17/32; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49908
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
152 words
The method of obtaining and projecting a series of characters in light and shadow image for photocomposition, comprising the steps of: providing a photocomposition machine having a power driven disc mount hub; providing a font disc comprised of a character transparency disc characterized by a physical rigidity insufficient to be selfsupporting in a planar condition under static gravitational conditions; providing a ridged base member having a planar face surface; assembling said disc and base on said hub in a relative nonrotatable relationship with said font disc adjacent said planar face of the base, and pumping air out of the space between the disc and base by rotating said assembly at a speed at least equal to that required to produce a centrifugal pumping action which expels said trapped air and results in an atmospheric pressure differential forcing said disc into intimate contact with said base over essentially the entire mutual surfaces therebetween.
Claim 2
Independent Claim
152 words
The method of obtaining and projecting a series of characters in light and shadow image for photocomposition, comprising the steps of: providing a photocomposition machine having a power driven disc mount hub; providing a font disc comprised of a character transparency disc characterized by a physical rigidity insufficient to be selfsupporting in a planar condition under static gravitational conditions; providing a ridged base member having a planar face surface; assembling said disc and base on said hub in a relative nonrotatable relationship with said font disc adjacent said planar face of the base, and pumping air out of the space between the disc and base by rotating said assembly at a speed at least equal to that required to produce a centrifugal pumping action which expels said trapped air and results in an atmospheric pressure differential forcing said disc into intimate contact with said base over essentially the entire mutual surfaces therebetween.
Claim 3
Dependent Claim
57 words
The method as set forth in claim 1 further including the step of providing a second font disc of the same descriptive character as said first disc, placing said members in abutting engagement with the planar face surface of the rigid base member and securing the first and second member against movement relative to the base member.
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) | 1978-11-24 | 1979-05-26 | 1979-11-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-11-24 | 1983-05-26 | 1983-11-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-11-24 | 1987-05-26 | 1987-11-25 | $7700.00 | Window Closed / Lapsed |