Patent EP0161491A1 successfully refreshed from Google Patents.
Patent US6380099B2 successfully refreshed from Google Patents.
US5021773A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fibre optic display device
Assignee: MARI IV INDUSTRIES Ltd
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Filing: 1989-03-09
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Granted: 1991-06-04
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Expires: 2009-03-09
Abstract
Abstract A display device has a disk assembly with a SET position and a RESET position approximately perpendicular and approximately parallel to the intended viewing direction. The disk assembly shows a bright indication in the viewing direction in SET position and a dark indication at the same viewing area in the RESET position. An aperture in the disk allows radiation from an optic fibre to be seen from the viewing direction in SET position and a hood, mechanically attached to the disk assembly occludes such radiation in the reset position.
Inventors
- 👤 John Browne
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 19:11
CPC Classifications
G; G09; G09F; G09F9/00; G09F9/30; G09F9/37; G09F9/375
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
187 words
Display device for display in a viewing direction comprising disk assembly including a disk, the assembly being rotable on a generally median axis from rotation between a SET position approximately perpendicular to a viewing direction and a RESET position approximately parallel to the viewing direction, stops for limiting rotation between said SET and RESET positions, an aperture in said disk, adjacent but offset from the pivot axis, a optical fibre terminal located to direct optic radiation through said aperture in the SET position, a hood mounted on said disk assembly located and shaped to project rearwardly therefrom in the SET position and to occlude in the RESET position and in the viewing direction radiation from the optic fibre terminal, said hood being concave toward and extending partially around said aperture, wherein said hood is mechanically attached to said disk assembly, means for selectively driving said disk between SET and RESET positions, wherein said hood is formed from a thin sheet of resilient material and said hood and disk are designed so that said bent hood flexes against detents on said disk assembly to be held in position.
Claim 2
Dependent Claim
187 words
Display device for display in a viewing direction comprising disk assembly including a disk, the assembly being rotable on a generally median axis from rotation between a SET position approximately perpendicular to a viewing direction and a RESET position approximately parallel to the viewing direction, stops for limiting rotation between said SET and RESET positions, an aperture in said disk, adjacent but offset from the pivot axis, a optical fibre terminal located to direct optic radiation through said aperture in the SET position, a hood mounted on said disk assembly located and shaped to project rearwardly therefrom in the SET position and to occlude in the RESET position and in the viewing direction radiation from the optic fibre terminal, said hood being concave toward and extending partially around said aperture, wherein said hood is mechanically attached to said disk assembly, means for selectively driving said disk between SET and RESET positions, wherein said hood is formed from a thin sheet of resilient material and said hood and disk are designed so that said bent hood flexes against detents on said disk assembly to be held in position.
Claim 3
Dependent Claim
48 words
Display device as claimed in claim 1 wherein said disk assembly comprises a frame and a circular disk mounted thereon, said disk is provided with said aperture wherein said hood is attached to said frame to partially surround the edge of said aperture on the outer side thereof.
Claim 4
Dependent Claim
49 words
Display device as claimed in claim 2 wherein said frame includes a pair of detents designed to retain the forward outer edges of said bent sheet against outward movement and wherein said frame is provided with means, in combination with said hood to prevent forward or rearward movement thereof.
Claim 5
Dependent Claim
127 words
Display device as claimed in claim 1 wherein said disk assembly comprises a frame and said disk is attached thereto where the frame comprises a peripheral ring and a diametrically extending central bar and having a curved strut in the general plane of the ring and with its ends attached to the central bar where the disk is apertured to allow a glass fibre terminal to radiate light in the viewing direction and said curved strut being shaped and located and to support said hood in position, said frame and strut designed to provide detents to prevent outward movement of the ends of said bent hood and said strut being provided with means in cooperation with said hood to prevent forward or rearward movement of said hood.
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) | 1994-06-03 | 1994-12-03 | 1995-06-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-06-03 | 1998-12-03 | 1999-06-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-06-03 | 2002-12-03 | 2003-06-04 | $7700.00 | Window Closed / Lapsed |