EP0002622A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Signal lamp with control circuit
Assignee: Individual
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Filing: 1978-12-18
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Granted: —
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Expires: 1998-12-18
Abstract
Abstract A signal device comprising a casing, a plurality of lamp holders for lamp means disposed within said casing, a light transmitting cover for said lamp means, a control circuit connected to said lamp holders, said control circuit being switchable to illuminate a plurality of lamps in said holders simultaneously in at least two predetermined modes. The circuit includes means for supplying an electrical current to each lamp at least during periods when said each lamp is not illuminated said electric current being sufficient to maintain the filament of each said lamp at black heat.
Inventors
- 👤 Thomas Arthur Allen
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-30 00:26
CPC Classifications
H; H05; H05B; H05B39/00; H05B39/09; G; G08; G08B; G08B5/00; G08B5/22; G08B5/36; G08B5/38
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
50 words
1 . A signal device comprising at least one holder for lamp means arranged within a light transmitting cover and connected or adapted to be connected to a control circuit characterised in that said control circuit.is switchable so as to illuminate said lamp means in at least two predetermined modes.
Claim 2
Dependent Claim
50 words
1 . A signal device comprising at least one holder for lamp means arranged within a light transmitting cover and connected or adapted to be connected to a control circuit characterised in that said control circuit.is switchable so as to illuminate said lamp means in at least two predetermined modes.
Claim 3
Dependent Claim
41 words
A signal device according to Claim 1 characterised in that a plurality of holders for lamp means are provided and said control circuit is switchable to illuminate a plurality of lamps in said holders simultaneously in at least two predetermined modes.
Claim 4
Dependent Claim
21 words
A signal device according to Claim 1 or 2 characterised in that one of said modes comprises a predetermined coded signal.
Claim 5
Dependent Claim
19 words
A signal device according to Claim 3 characterised in that the coded signal is the morse code for S.O.S.
Claim 6
Dependent Claim
19 words
A signal device according to Claim 1 to 4 characterised in that another mode produces a repititive pulsed signal.
Claim 7
Dependent Claim
36 words
A signal device according to any of claims 1 to 5 characterised in thatthe circuit is arranged to provide an output to each lamp holder continuously so as to maintain said lamps at a 'black heat'.
Claim 8
Dependent Claim
43 words
A signal device according to any of claims 1 to 6 characterised in that the circuit arrangement is such that in the event of failure of one of the lamps the other lamp or lamps will continue to function in the same mode.
Claim 9
Dependent Claim
24 words
A signal device according to any of claims 1 to 7 characterised in that it is provided with a casing adapted for panel mounting.
Claim 10
Dependent Claim
27 words
9, A signal device according to any of claims 1 to 7 characterised in that it is provided with a casing adapted to provide a hand-held unit.
References Cited (Backward Citations)
No citation records indexed.
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