US4383382A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Self-luminous safety sign
Assignee: Self-Powered Lighting Ltd
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Filing: 1980-10-01
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Granted: 1983-05-17
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Expires: 2000-10-01
Abstract
Abstract A self-luminous safety sign with variable legend capability. A housing supports a faceplate having safety warnings or symbols thereon. Self-luminous lights, adapted to illuminate selected characters or symbols on the faceplate without external electrical connections, are selectively mounted in the housing. The lights are removable from and displaceable within the housing so that the desired characters or symbols on the faceplate can be illuminated.
Inventors
- 👤 William Hegarty
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 03:26
CPC Classifications
G; G08; G08B; G08B7/00; G08B7/06; G08B7/062; G09; G09F; G09F13/00; G09F13/04; G09F13/12; G08B5/00; G09F13/0418; G09F13/0454; G09F13/42; G09F2013/05
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
202 words
A safety sign manufactured for use by a consumer comprising a housing adapted to support either of at least a first and second legend-bearing means, said first legend-bearing means having at least one character for illumination thereon and being removably securable in said housing by said consumer, self-luminous lighting means for illuminating said at least one character on said first legend-bearing means when said first legend-bearing means is secured in said housing, said self-luminous lighting means including a radioactive gas and container means in which said gas is sealed, said self-luminous lighting means further including an impact-resistant sleeve means in which said container means is selectively mounted, and securing means for selectively and adjustably securing said lighting means in said housing in a first position so that said at least one character on said first legend-bearing means is illuminated by said lighting means, said securing means allowing for the consumer to reposition said lighting means in said housing to illuminate a character on said second legend-bearing means in a different position than said at least one character on said first legend-bearing means when said first legend-bearing means is removed from said housing and replaced by said second legend-bearing means by said consumer.
Claim 2
Dependent Claim
202 words
A safety sign manufactured for use by a consumer comprising a housing adapted to support either of at least a first and second legend-bearing means, said first legend-bearing means having at least one character for illumination thereon and being removably securable in said housing by said consumer, self-luminous lighting means for illuminating said at least one character on said first legend-bearing means when said first legend-bearing means is secured in said housing, said self-luminous lighting means including a radioactive gas and container means in which said gas is sealed, said self-luminous lighting means further including an impact-resistant sleeve means in which said container means is selectively mounted, and securing means for selectively and adjustably securing said lighting means in said housing in a first position so that said at least one character on said first legend-bearing means is illuminated by said lighting means, said securing means allowing for the consumer to reposition said lighting means in said housing to illuminate a character on said second legend-bearing means in a different position than said at least one character on said first legend-bearing means when said first legend-bearing means is removed from said housing and replaced by said second legend-bearing means by said consumer.
Claim 3
Dependent Claim
43 words
A safety sign as claimed in claim 1, wherein said securing means is adapted to allow for the positioning of said lighting means in said housing in a plurality of locations for the illumination of a second character on said first legend-bearing means.
Claim 4
Dependent Claim
58 words
A safety sign as claimed in claim 2, wherein said first legend-bearing means includes a faceplate, said faceplate including means for defining characters, said securing means being adapted to allow for the selective positioning of said lighting means in said housing behind at least one of said characters for the selective illumination of said at least one character.
Claim 5
Dependent Claim
47 words
A safety sign as claimed in claim 3, further comprising a plurality of self-luminous lighting means and means for selectively and adjustably positioning said plurality of lighting means in said housing behind said faceplate in a plurality of locations so that said characters can be selectively illuminated.
Claim 6
Dependent Claim
22 words
A safety sign as claimed in claim 4, wherein each said self-luminous lighting means includes tritium-gas filled container means for producing light.
Claim 7
Dependent Claim
22 words
A safety sign as claimed in claim 5, wherein said self-luminous lighting means includes means for focussing said light on said characters.
Claim 8
Dependent Claim
67 words
A safety sign as claimed in claim 6, wherein said housing includes a front frame and a back frame, and means for releasably securing said front frame to said back frame, said faceplate being removably mounted in said housing intermediate said front and back frames, said plurality of lighting means being selectively securable in said back frame behind said faceplate for the selective illumination of said characters.
Claim 9
Dependent Claim
48 words
A safety sign as claimed in claim 7, wherein said back frame includes top and bottom walls, said top and bottom walls each having a shoulder extending substantially perpendicular therefrom, said plurality of lighting means being selectively securable to said shoulders for the selective illumination of said characters.
Claim 10
Dependent Claim
72 words
A safety sign as claimed in claim 8, wherein said focussing means includes reflector means for selectively focussing said light on selected portions of said faceplate, said container means being releasably securable in said reflector means, said reflector means including depending flanges at each end thereof, said depending flanges of said reflector means being selectively releasably securable to said shoulders, respectively, for the selective positioning of said lighting means in said housing.
Claim 11
Dependent Claim
43 words
A safety sign as claimed in claim 9, wherein said front frame includes four walls, at least two opposing walls each having an extending lip, said faceplate being secured intermediate said front and back frames by said securing lips and said shoulders, respectively.
Claim 12
Dependent Claim
68 words
A safety sign as claimed in claim 10, wherein said means for selectively securing said lighting means in said housing includes two L-shaped means, one said L-shaped means acting in cooperation with one said shoulder, said depending flanges of said reflector means being releasably securable intermediate said L-shaped means and said shoulders, said faceplate being releasably securable in said housing intermediate said L-shaped means and said extending lips.
Claim 13
Dependent Claim
34 words
A safety sign as claimed in claim 6, wherein said housing includes a four-sided frame, one said side of said frame being removable from said frame so that said faceplate can be removed therefrom.
Claim 14
Dependent Claim
20 words
A safety sign as claimed in claim 12, wherein said frame includes a channel therearound for slidingly receiving said faceplate.
Claim 15
Dependent Claim
74 words
A safety sign as claimed in claim 13, wherein said frame includes a depending arm therearound, said focussing means including reflector means for selectively focussing said light on selected portions of said faceplate, said container means being releasably securable in said reflector means, said reflector means having depending flanges, said flanges being releasably securable to said depending arms so that each said lighting means can be releasably secured in selected positions in said housing.
Claim 16
Dependent Claim
34 words
A safety sign as claimed in claims 5, 9 or 14, wherein each said lighting means includes an impact-resistant sleeve means, at least one said container means being selectively mountable within said sleeve means.
Claim 17
Dependent Claim
25 words
A safety sign as claimed in claim 15, wherein each said sleeve means includes cushioning means for cushioning said container means in said sleeve means.
Claim 18
Dependent Claim
32 words
A safety sign as claimed in claim 16, wherein each said sleeve means includes plug means at both ends thereof for hermetically sealing said tritium-gas filled container means in said sleeve means.
Claim 19
Dependent Claim
28 words
A safety sign as claimed in claims 9 or 14, wherein said reflector means includes clip means at both ends thereof for frictionally securing said container means therein.
Claim 20
Dependent Claim
33 words
A safety sign as claimed in claims 9 or 14, wherein said reflector means and said container means include a Velcro fastening means for releasably securing said container means in said reflector means.
Claim 21
Dependent Claim
50 words
A safety sign as claimed in claim 14, wherein said frame includes a second channel, said channel being adapted to receive a back plate, said back plate including contoured sections for conformingly receiving a portion of said reflector means so that said reflector means are properly secured in said housing.
Claim 22
Dependent Claim
23 words
A safety sign as claimed in claims 6, 9 or 14, wherein said faceplate includes openings for allowing said light to pass therethrough.
Claim 23
Dependent Claim
24 words
A safety sign as claimed in claims 6, 9 or 14, wherein said faceplate includes translucent regions for allowing said light to pass therethrough.
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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) | 1986-05-16 | 1986-11-15 | 1987-05-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-05-16 | 1990-11-15 | 1991-05-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-05-16 | 1994-11-15 | 1995-05-17 | $7700.00 | Window Closed / Lapsed |