US4816811A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Compliant overlay for use as an optically-based touch-sensitive screen
Assignee: NCR Voyix Corp
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Filing: 1985-03-25
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Granted: 1989-03-28
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Expires: 2005-03-25
Abstract
Abstract A resilient and deformable touch screen that is adapted to be overlaid on the surface of a CRT screen is formed from a semi-rigid plastic frame attached to a flexible plastic pouch filled with a soft resilient material which adheres to the surface of the pouch.
Inventors
- 👤 Eric L. Bogatin
- 👤 Xina S. Quan
- 👤 Thomas A. Schwartz
- 👤 Wesley P. Townsend
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 01:44
CPC Classifications
G; G06; G06K; G06K11/00; G06K11/06; G06F; G06F3/00; G06F3/01; G06F3/03; G06F3/041; G06F3/042; G06F3/0421
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
43 words
A touch-sensitive overlay adapted to be overlaid on the face of a display screen, comprising a pouch formed from a pair of transparent sheets, a body of transparent gel sealed in said pouch, and means for attaching said pouch to said display screen.
Claim 2
Dependent Claim
43 words
A touch-sensitive overlay adapted to be overlaid on the face of a display screen, comprising a pouch formed from a pair of transparent sheets, a body of transparent gel sealed in said pouch, and means for attaching said pouch to said display screen.
Claim 3
Dependent Claim
29 words
The touch-sensitive overlay set forth in claim 1 wherein said attaching means comprises a frame to which the perimeters of said transparent sheets are sealed to form said pouch.
Claim 4
Dependent Claim
59 words
A touch-sensitive overlay adapted to be overlaid on the face of a display screen, comprising, a frame, a pair of complaint, transparent sheets, said sheets being sealed to respective surfaces of said frame to form a pouch, a body of transparent gel sealed in said pouch, and means for attaching said frame to said face of said CRT screen.
Claim 5
Dependent Claim
59 words
A touch-sensitive overlay adapted to be overlaid on the face of a display screen, comprising, a frame, a pair of complaint, transparent sheets, said sheets being sealed to respective surfaces of said frame to form a pouch, a body of transparent gel sealed in said pouch, and means for attaching said frame to said face of said CRT screen.
Claim 6
Dependent Claim
92 words
A touch-sensitive screen adapted to be overlaid on the face of a display comprising a frame a pair of plastic sheets sealed to respective surfaces of said frame to form a pouch, a body of gel sealed in said pouch, said gel causing light signals emitted by said display to become trapped within said gel by total internal reflection when said screen is touched by a user and to travel to an outside edge of said frame, and a plurality of photodiodes disposed around said outside edge for receiving said light signals.
Claim 7
Dependent Claim
92 words
A touch-sensitive screen adapted to be overlaid on the face of a display comprising a frame a pair of plastic sheets sealed to respective surfaces of said frame to form a pouch, a body of gel sealed in said pouch, said gel causing light signals emitted by said display to become trapped within said gel by total internal reflection when said screen is touched by a user and to travel to an outside edge of said frame, and a plurality of photodiodes disposed around said outside edge for receiving said light signals.
Claim 8
Dependent Claim
46 words
An optically-based touch-sensitive screen in combination with a display comprising a frame, a pair of transparent sheets sealed to respective surfaces of said frame to form a pouch, a body of transparent gel sealed in said pouch, and means for attaching said frame to said display.
Claim 9
Dependent Claim
46 words
An optically-based touch-sensitive screen in combination with a display comprising a frame, a pair of transparent sheets sealed to respective surfaces of said frame to form a pouch, a body of transparent gel sealed in said pouch, and means for attaching said frame to said display.
Claim 10
Dependent Claim
22 words
The touch-sensitive screen set forth in claim 5 further comprising a plurality of photodiodes disposed around an outside edge of said frame.
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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) | 1992-03-27 | 1992-09-26 | 1993-03-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-03-27 | 1996-09-26 | 1997-03-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-03-27 | 2000-09-26 | 2001-03-28 | $7700.00 | Window Closed / Lapsed |