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US4189859A Expired / Lapsed US ⏱️ 0.0 years remaining

Device at display arrangement

Assignee: PRISMAVISION AB
•
Filing: 1977-08-08
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Granted: 1980-02-26
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Expires: 1997-08-08
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Abstract

Abstract A display having a frame and prisms rotatably mounted therein, each of the prisms including adjacent longitudinally extending side surfaces so that each set of associated side surfaces of the prisms provides a display when rotated to a side by side position defining a permanently recurring sequence with the number of displays corresponding to the number of side surfaces on each prism. Each prism is provided with a pair of rotation axles disposed at opposite ends thereof. A drive motor and a transmission rotate the prisms synchronously, the drive motor being connected to one of the rotation axles. Gear discs are mounted on one rotation axle of each pair provided on the prisms with at least one belt mounted on the gear discs for rotating the gear discs and the prisms when the one rotation axle is driven by the drive motor, the belt being toothed for meshing with the gear discs.

Inventors

  • 👤 Stig B. Ahlgren

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-02 09:34
CPC Classifications
G; G09; G09F; G09F11/00; G09F11/02; G09F11/025

Claims Analysis

Total Claims: 5
Claim 1
Independent Claim 178 words
A display comprising: a frame; prisms rotatably mounted in said frame, each of said prisms including adjacent longitudinally extending side surfaces, each set of associated side surfaces of said prisms providing a display when rotated to a side by side position defining a permanently recurring sequence with the number of displays corresponding to the number of side surfaces on each prism; each prism being provided with a first rotation axle at one end thereof and a second rotation axle at an opposite end thereof; bearing means disposed on said frame for freely supporting said first and second axles of said prisms; drive motor means and a transmission for rotating said prisms synchronously, said drive motor means being connected to one of said first rotation axles; gear discs mounted on said first rotation axles of said prisms; and belt means mounted on said gear discs for rotating said gear discs and said prisms when said one of said first rotation axles is driven by said drive motor means, said belt means being toothed for meshing with said gear discs.
Claim 2
Dependent Claim 178 words
A display comprising: a frame; prisms rotatably mounted in said frame, each of said prisms including adjacent longitudinally extending side surfaces, each set of associated side surfaces of said prisms providing a display when rotated to a side by side position defining a permanently recurring sequence with the number of displays corresponding to the number of side surfaces on each prism; each prism being provided with a first rotation axle at one end thereof and a second rotation axle at an opposite end thereof; bearing means disposed on said frame for freely supporting said first and second axles of said prisms; drive motor means and a transmission for rotating said prisms synchronously, said drive motor means being connected to one of said first rotation axles; gear discs mounted on said first rotation axles of said prisms; and belt means mounted on said gear discs for rotating said gear discs and said prisms when said one of said first rotation axles is driven by said drive motor means, said belt means being toothed for meshing with said gear discs.
Claim 3
Dependent Claim 34 words
A display according to claim 1, wherein adjacent first rotation axles with respect to being driven are connected in pairs by said belt means, said belt means including a toothed belt for each pair.
Claim 4
Dependent Claim 26 words
A display according to claim 1, wherein at least two of said first rotation axles are driven by a common toothed belt defining said belt means.
Claim 5
Dependent Claim 29 words
A display according to claim 1, wherein said one of said first rotation axles and said drive motor means with respect to rotation are connected via an indexing gear.

References Cited (Backward Citations)

US3199239A Cited
US3304638A Cited
US3696536A Cited
US3798811A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1983-02-25 1983-08-27 1984-02-26 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1987-02-25 1987-08-27 1988-02-26 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1991-02-25 1991-08-27 1992-02-26 $7700.00 Window Closed / Lapsed

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