US3990165A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mechanic digital display device
Assignee: Ebauches SA
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Filing: 1974-08-01
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Granted: 1976-11-09
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Expires: 1994-08-01
Abstract
Abstract A mechanical digital display device in which a pair of display screens is arranged within a display zone. The screens are secured to a respective pivot lever movable in two planes to move the screens in horizontal and vertical directions and thereby form numbers or the like to be displayed.
Inventors
- 👤 Paul Vogt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 17:55
CPC Classifications
G; G09; G09F; G09F9/00; G09F9/30; G09F9/37; G04; G04B; G04B19/00
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
169 words
A mechanical digital display device comprising, a front plate and a rear plate disposed behind the front plate, the front plate having an opening therein forming a rectangular display zone, a pair of colored rectangular display screens arranged one beneath the other within the zone in front of the rear plate and movable towards and away from each other, the total surface area of the screens being less than the area defined within the zone, each screen being rigidly secured to a respective pivot lever passing through passageways in the rear plate, each lever carrying a cam-operated cam disc for controlling the movement of the screens, one of said screens being divided into two portions rigidly connected with each other and arranged with a space therebetween, said space defined by said one screen being of rectangular configuration with the long dimension thereof disposed parallel to a short edge of the zone, and a covering strip disposed on the rear plate, the strip having the same color as the screens.
Claim 2
Dependent Claim
169 words
A mechanical digital display device comprising, a front plate and a rear plate disposed behind the front plate, the front plate having an opening therein forming a rectangular display zone, a pair of colored rectangular display screens arranged one beneath the other within the zone in front of the rear plate and movable towards and away from each other, the total surface area of the screens being less than the area defined within the zone, each screen being rigidly secured to a respective pivot lever passing through passageways in the rear plate, each lever carrying a cam-operated cam disc for controlling the movement of the screens, one of said screens being divided into two portions rigidly connected with each other and arranged with a space therebetween, said space defined by said one screen being of rectangular configuration with the long dimension thereof disposed parallel to a short edge of the zone, and a covering strip disposed on the rear plate, the strip having the same color as the screens.
Claim 3
Dependent Claim
31 words
A device as claimed in claim 1 in which the space between the portions of the one screen sweeps over and away from the strip during displacements of said one screen.
Claim 4
Dependent Claim
79 words
A device as claimed in claim 1 in which said levers are adapted to move parallel to their pivotal axes, the cam associated with each cam disc being of generally right-section profile and each cam disc being of configuration for mating engagement upon its respective cam, and the cams being adapted for bidirectional movement, whereby the levers are operable to move around their pivot axes and parallel thereto to effect movement of the screens in vertical and horizontal directions.
Claim 5
Dependent Claim
36 words
A device as claimed in claim 1 in which said levers each include extending arms disposed partially around a respective cam, said arms being operable to maintain contact of the cam discs with their respective roller.
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) | 1979-11-09 | 1980-05-10 | 1980-11-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-11-09 | 1984-05-10 | 1984-11-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-11-09 | 1988-05-10 | 1988-11-09 | $7700.00 | Window Closed / Lapsed |