US4401050A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Phosphorescent escape route indicator
Assignee: Individual
•
Filing: 1981-09-30
•
Granted: 1983-08-30
•
Expires: 2001-09-30
Abstract
Abstract A phosphorescent escape route indicator having at least one protruding indicia formed within or attached to a sheet of material. The protruding indicia has incorporated therewith a phosphorescent substance capable of emitting a glow in the absence of light. An adhesive formed as part of the sheet is utilized to apply the indicator to the surface of walls or stairways thereby aiding in delineating escape routes or access routes to emergency equipment during time of emergency.
Inventors
- 👤 Laurence D. Britt
- 👤 Richard G. Britt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:13
CPC Classifications
G; G08; G08B; G08B7/00; G08B7/06; G08B7/066; A; A62; A62B; A62B3/00; G09; G09F; G09F13/00; G09F13/20; Y; Y10; Y10S; Y10S116/00; Y10S116/14
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
163 words
A direction indicating tape capable of providing a visual and feelable indication of direction during periods of darkness comprising: (a) an elongated strip of material, capable of being wound in a roll, (b) adhesive means on the bottom side of said strip of material for securing said strip to a wall surface and spaced a predetermined distance from the floor, (c) and a plurality of spaced phosphorescent, pointed shaped, indicator elements attached to a top side of said sheet along its length, each phosphorescent indicator element having a thickness sufficient to be felt and comprising: 1. a layer of reflective plastic material, 2. a layer of a phosphorescent substance on top of said layer of reflective material, and 3. a layer of clear plastic material on top of said layer of phosphorescent substance, and elongated line-like embossed areas on said strip of material extending between said phosphorescent indicators for enabling a person to feel his way from one indicator element to the next.
Claim 2
Dependent Claim
163 words
A direction indicating tape capable of providing a visual and feelable indication of direction during periods of darkness comprising: (a) an elongated strip of material, capable of being wound in a roll, (b) adhesive means on the bottom side of said strip of material for securing said strip to a wall surface and spaced a predetermined distance from the floor, (c) and a plurality of spaced phosphorescent, pointed shaped, indicator elements attached to a top side of said sheet along its length, each phosphorescent indicator element having a thickness sufficient to be felt and comprising: 1. a layer of reflective plastic material, 2. a layer of a phosphorescent substance on top of said layer of reflective material, and 3. a layer of clear plastic material on top of said layer of phosphorescent substance, and elongated line-like embossed areas on said strip of material extending between said phosphorescent indicators for enabling a person to feel his way from one indicator element to the next.
Claim 3
Dependent Claim
20 words
An indicator tape as defined in claim 1 wherein said indicator elements are each in the shape of an arrow.
Claim 4
Dependent Claim
21 words
The direction indicating tape of claim 1 and further including a removable plastic cover on the bottom of said adhesive means.
Claim 5
Dependent Claim
21 words
The direction indicating tape of claim 1 and wherein said strip of material is plastic and said indicator elements are plastic.
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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) | 1986-08-29 | 1987-02-28 | 1987-08-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-08-29 | 1991-02-28 | 1991-08-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-08-29 | 1995-02-28 | 1995-08-30 | $7700.00 | Window Closed / Lapsed |