Patent US3884554A successfully refreshed from Google Patents.
US3884554A
Expired / Lapsed
US
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Display sheet material and method
Assignee: Individual
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Filing: 1972-03-27
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Granted: 1975-05-20
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Expires: 1992-03-27
Abstract
Abstract A display sheet material is provided which generates interference fringe patterns which appear to move to an observer upon relative movement of the sheet and the observer. In one form, lenticular formations or parallel printed lines on respective surfaces of different transparent sheets generate fringe patterns. The sheets are secured together in a manner to permit some degree of movement between portions of both sheets to permit variation in the shape and configuration of the fringe patterns.
Inventors
- 👤 Jerome H Lemelson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 10:36
CPC Classifications
B; B32; B32B; B32B27/00; B32B27/06; B32B27/08; B32B7/00; B32B7/04; B32B7/12; B44; B44F; B44F1/00; B44F1/06; B44F1/066; B44F1/08; B44F1/10; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24802; Y10T428/24851; Y10T428/24868
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
171 words
A composite flexible display sheet material made of a plurality of thin light transmitting flexible plastic sheets comprising: first and second sheets defining different strata of said sheet material, means for joining said first and second sheets facewise together along a plurality of space-separated portions of said first and second sheets with juxtapositioned portions of said sheets between the joined portions of said sheets being unjoined and capable of some degree of relative shifting movement with respect to each other when the composite sheet material is deformed out of flatness, each of said first and second sheets containing respective light diffracting means which cooperates with the light diffracting means of the other sheet in generating optical fringe pattern effects to an observer looking through said composite sheet material, and operable whereby, when the sheet material is flexed, said observed fringe pattern effects will appear to the observer to change in shape and to move a degree other than the degree of movement of the display sheet material during the flexure thereof.
Claim 2
Dependent Claim
171 words
A composite flexible display sheet material made of a plurality of thin light transmitting flexible plastic sheets comprising: first and second sheets defining different strata of said sheet material, means for joining said first and second sheets facewise together along a plurality of space-separated portions of said first and second sheets with juxtapositioned portions of said sheets between the joined portions of said sheets being unjoined and capable of some degree of relative shifting movement with respect to each other when the composite sheet material is deformed out of flatness, each of said first and second sheets containing respective light diffracting means which cooperates with the light diffracting means of the other sheet in generating optical fringe pattern effects to an observer looking through said composite sheet material, and operable whereby, when the sheet material is flexed, said observed fringe pattern effects will appear to the observer to change in shape and to move a degree other than the degree of movement of the display sheet material during the flexure thereof.
Claim 3
Dependent Claim
32 words
A composite display sheet material in accordance with claim 1 wherein said light diffracting means of at least one of said sheet layers comprises lenticular formations in at least one surface thereof.
Claim 4
Dependent Claim
33 words
A composite display sheet material in accordance with claim 1 wherein said light diffracting means comprises lenticular formations formed in at least one of the major surFaces of each of said sheet layers.
Claim 5
Dependent Claim
72 words
A composite display sheet material in accordance with claim 3 wherein said lenticular formation formed in said first and second sheet layers comprise respective parallel rib formations with the parallel rib formations in one sheet layer being angulated to the rib formations formed in the other layer to generate interference fringe patterns which are viewable through said sheet material which fringe patterns vary in shape and positions as said material is flexed.
Claim 6
Dependent Claim
70 words
A composite display sheet material in accordance with claim 3 wherein said lenticular formations in said first and second sheet layers are closely spaced short protrusions each defining a respective light diffracting lens and the protrusions of one layer are offset a degree from the protrusions of the other layer a degree to generate an interference fringe pattern effect which will vary in shape as the sheet material is flexed.
Claim 7
Dependent Claim
30 words
A composite display sheet material in accordance with claim 1 wherein said light diffracting means comprises lenticular formations in both said sheets formed in the abutting surfaces of said sheets.
Claim 8
Dependent Claim
64 words
A composite display sheet material in accordance with claim 1 wherein said light diffracting means comprises rib-like lenticular formations in the outer surface of one of said sheet layers and printed matter on the inside surface of the other of said sheet layers cooperating with said lenticular formations to provide a changing optical effect along abutting portions of the first and second sheet layers.
Claim 9
Dependent Claim
42 words
A composite display sheet material in accordance with claim 1 wherein said light diffracting means comprises spaced apart printed formations disposed on both said sheet layers and separated from each other by the thickness of at least one of said sheet layers.
Claim 10
Dependent Claim
29 words
A composite display sheet material in accordance with claim 1 wherein the voids between said space-separated portion of said first and second layers of sheet material are gas pressurized.
Claim 11
Dependent Claim
54 words
A composite display sheet material in accordance with claim 1 wherein the joined portions of said first and second sheet layers are configured and separated from each other so as to permit relative lateral movement of the unjoined portions of the two layers as the sheet material is flexed to create changing optical effects.
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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) | 1978-05-19 | 1978-11-18 | 1979-05-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-05-19 | 1982-11-18 | 1983-05-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-05-19 | 1986-11-18 | 1987-05-20 | $7700.00 | Window Closed / Lapsed |