Patent US3731082A successfully refreshed from Google Patents.
US3731082A
Expired / Lapsed
US
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Emergency warning light apparatus
Assignee: Code 3 Inc
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Filing: 1970-09-30
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Granted: 1973-05-01
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Expires: 1990-09-30
Abstract
Abstract An emergency warning light apparatus having a high-intensity bulb carried on a base and covered by a translucent, substantially cylindrical dome, one portion of which has the form of a Fresnel, ribbed pattern on a cylindrical wall surface and a conical deflector in its upper portion, with its apex disposed from the base of the cone toward the bulb. The base includes a lower plate adapted for essentially universal mounting, including a central aperture that is threaded to receive a support bar, a plurality of smaller apertures clustered around the central aperture, and a plurality of sockets on a lower surface to receive permanent magnets. The high-intensity bulb carried by the base inside the dome is intermitently actuated,being a strobe light connected with a power transistor of a circuit means, the heat generated by the transistor being conducted to the base by a heat conductive fastener which with the base defines a heat sink to dissipate the heat generated by the power transistor.
Inventors
- 👤 A Blaylock
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 17:20
CPC Classifications
B; B64; B64D; B64D47/00; B64D47/02; B64D47/06; B64F; B64F1/00; B64F1/18; B64F1/20; F; F21; F21W; F21W2111/00; F21W2111/06
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
111 words
An emergency or warning light apparatus comprising: a base; a high intensity bulb carried by and extending generally outward from said base; a translucent, substantially cylindrical dome secured to the base to cover said bulb, said dome having a Fresnel, ribbed pattern on its cylindrical wall surface to direct light rays from the bulb in transverse planes to optimize eye level light intensity; and a conical reflector carried in the upper portion of the dome, having the apex disposed from the base of the cone toward the bulb, said reflector limiting light energy dissipation through the top of the done, but rather, deflecting upwardly traveling light rays in a transverse direction.
Claim 2
Dependent Claim
111 words
An emergency or warning light apparatus comprising: a base; a high intensity bulb carried by and extending generally outward from said base; a translucent, substantially cylindrical dome secured to the base to cover said bulb, said dome having a Fresnel, ribbed pattern on its cylindrical wall surface to direct light rays from the bulb in transverse planes to optimize eye level light intensity; and a conical reflector carried in the upper portion of the dome, having the apex disposed from the base of the cone toward the bulb, said reflector limiting light energy dissipation through the top of the done, but rather, deflecting upwardly traveling light rays in a transverse direction.
Claim 3
Dependent Claim
25 words
The apparatus of claim 1 in which one half the included angle of said conical deflector is within a range of 20* to 30* .
Claim 4
Dependent Claim
89 words
An emergency or warning light apparatus comprising: a base; a high intensity bulb carried by and extending generally outward from said base; a translucent, dome secured to the base to cover said bulb; said base including a cylindrical bottom portion and a transverse upper portion constructed of highly heat conductive metal; a power transistor; a fastener means constructed from a highly heat conductive metal securing the power transistor to said base and defining therewith a heat sink to transfer to the atmosphere the heat generated by the power transistor.
Claim 5
Dependent Claim
89 words
An emergency or warning light apparatus comprising: a base; a high intensity bulb carried by and extending generally outward from said base; a translucent, dome secured to the base to cover said bulb; said base including a cylindrical bottom portion and a transverse upper portion constructed of highly heat conductive metal; a power transistor; a fastener means constructed from a highly heat conductive metal securing the power transistor to said base and defining therewith a heat sink to transfer to the atmosphere the heat generated by the power transistor.
Claim 6
Dependent Claim
21 words
The apparatus of claim 3 in which said power transistor has an aperture and the fastener means extends through said aperture.
Claim 7
Dependent Claim
18 words
The apparatus of claim 3 in which said highly heat conductive metal of the base is substantially aluminum.
Claim 8
Dependent Claim
15 words
The apparatus of claim 5 in which said fastener means is constructed substantially of aluminum.
References Cited (Backward Citations)
US2015442A
Cited
US1473375A
Cited
US2413628A
Cited
US2492837A
Cited
US2773172A
Cited
US2875324A
Cited
US3501627A
Cited
US3593014A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-04-30 | 1976-10-30 | 1977-05-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-30 | 1980-10-30 | 1981-05-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-30 | 1984-10-30 | 1985-05-01 | $7700.00 | Window Closed / Lapsed |