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US3837102A
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Indicia display device
Assignee: Individual
•
Filing: 1972-04-17
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Granted: 1974-09-24
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Expires: 1992-04-17
Abstract
Abstract An indicia display device utilizing at least one pair of grids with each grid having a plurality of lines and piezoelectric means for moving said grids one relative to the other to effect the display and disappearance of indicia.
Inventors
- 👤 M Golay
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:11
CPC Classifications
G; G09; G09F; G09F9/00; G09F9/30; G09F9/37; G09F9/372
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
113 words
An indicia display device comprising two grids each having a plurality of fine lines and positioned in overlying relationship and piezoelectric means for displacing said grids one relative to the other to move thee lines of one grid into and out of registry with the lines of the other grid, said piezoelectric means each comprising two piezoelectric structures hinged one to the other in the form of a V, said piezoelectric means being inverted one relative to the other and each having one free end of one piezoelectric means secured to one grid and the other free end secured to the other grid and electrodes on said structures for applying a potential thereto.
Claim 2
Dependent Claim
113 words
An indicia display device comprising two grids each having a plurality of fine lines and positioned in overlying relationship and piezoelectric means for displacing said grids one relative to the other to move thee lines of one grid into and out of registry with the lines of the other grid, said piezoelectric means each comprising two piezoelectric structures hinged one to the other in the form of a V, said piezoelectric means being inverted one relative to the other and each having one free end of one piezoelectric means secured to one grid and the other free end secured to the other grid and electrodes on said structures for applying a potential thereto.
Claim 3
Dependent Claim
48 words
An indicia display device according to claim 1 wherein one of said grids comprises a first plate having a plurlaity of fine light transmitting slits and said other grid comprises a second plate having a plurality of light reflecting lines corresponding in size and spacing to said slits.
Claim 4
Dependent Claim
27 words
An indicia display device according to claim 2 including a vibrator connected to one of said plates for minimizing the sticktion between said plates during displacement thereof.
Claim 5
Dependent Claim
69 words
An indicia display device according to claim 3 including a plurality of pairs of grids with said first plate of each pair of grids forming part of a single plate with said slits of the grids being arranged in a geometric configuration, said second plate of each pair of grids being placed in overlying relationship with said single plate and said vibrator being mechanically coupled to said single plate.
Claim 6
Dependent Claim
35 words
An indicia display device according to claim 1 including a plurality of pairs of grids arranged in a geometric configuration whereby displacement of the grids of selected pairs will effect the display of selected indicia.
References Cited (Backward Citations)
US3047865A
Cited
US957120A
Cited
US1521007A
Cited
US3082560A
Cited
US3146367A
Cited
US3399475A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-09-23 | 1978-03-25 | 1978-09-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-09-23 | 1982-03-25 | 1982-09-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-09-23 | 1986-03-25 | 1986-09-24 | $7700.00 | Window Closed / Lapsed |