GB1525728A – Multiple photoflash lamp units
– Google Patents
GB1525728A – Multiple photoflash lamp units
– Google Patents
Multiple photoflash lamp units
Info
Publication number
GB1525728A
GB1525728A
GB3850375A
GB3850375A
GB1525728A
GB 1525728 A
GB1525728 A
GB 1525728A
GB 3850375 A
GB3850375 A
GB 3850375A
GB 3850375 A
GB3850375 A
GB 3850375A
GB 1525728 A
GB1525728 A
GB 1525728A
Authority
GB
United Kingdom
Prior art keywords
circuit board
conductive
shield
foil
lamp units
Prior art date
1974-11-04
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB3850375A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
General Electric Co
Original Assignee
General Electric Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
1974-11-04
Filing date
1975-09-19
Publication date
1978-09-20
1975-09-19
Application filed by General Electric Co
filed
Critical
General Electric Co
1978-09-20
Publication of GB1525728A
publication
Critical
patent/GB1525728A/en
Status
Expired
legal-status
Critical
Current
Links
Espacenet
Global Dossier
Discuss
Classifications
G—PHYSICS
G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
G03B15/00—Special procedures for taking photographs; Apparatus therefor
G03B15/02—Illuminating scene
G03B15/03—Combinations of cameras with lighting apparatus; Flash units
G03B15/04—Combinations of cameras with non-electronic flash apparatus; Non-electronic flash units
G03B15/0442—Constructional details of the flash apparatus; Arrangement of lamps, reflectors, or the like
G—PHYSICS
G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
G03B15/00—Special procedures for taking photographs; Apparatus therefor
G03B15/02—Illuminating scene
G03B15/03—Combinations of cameras with lighting apparatus; Flash units
G03B15/04—Combinations of cameras with non-electronic flash apparatus; Non-electronic flash units
G03B15/0452—Electrical ignition means connected to the shutter
G03B15/0457—Ignition mechanisms for sequential ignition of flash lamps
H—ELECTRICITY
H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
H05K1/00—Printed circuits
H05K1/02—Details
H05K1/0213—Electrical arrangements not otherwise provided for
H05K1/0254—High voltage adaptations; Electrical insulation details; Overvoltage or electrostatic discharge protection ; Arrangements for regulating voltages or for using plural voltages
H—ELECTRICITY
H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
H05K1/00—Printed circuits
H05K1/02—Details
H05K1/0266—Marks, test patterns or identification means
Abstract
1525728 Flash units GENERAL ELECTRIC CO 19 Sept 1975 [4 Nov 1974 5 May 1975] 38503/75 Heading G2X A multiple flash-lamp array has a circuit board having switching circuitry on one side for sequentially firing the lamps, and a conductive shield parallel and adjacent to the other side. The flashlamp array (17) Fig. 1 (not shown) and the circuit board are as described and shown in Specification 1525726. The shield 70 may be as disclosed in Specification 1525727, but instead of being formed on the back of the circuit board it is separated from it. It may be a conductive foil or a metallized paper sheet 74, 75. Conductive eyelets 81 pass through the circuit board with one end in contact with a ground circuit run and the other end touching foil 75, so that the latter acts as a grounded shield. This may also carry indicia on the back.
GB3850375A
1974-11-04
1975-09-19
Multiple photoflash lamp units
Expired
GB1525728A
(en)
Applications Claiming Priority (2)
Application Number
Priority Date
Filing Date
Title
US52045174A
1974-11-04
1974-11-04
US57475275A
1975-05-05
1975-05-05
Publications (1)
Publication Number
Publication Date
GB1525728A
true
GB1525728A
(en)
1978-09-20
Family
ID=27060150
Family Applications (1)
Application Number
Title
Priority Date
Filing Date
GB3850375A
Expired
GB1525728A
(en)
1974-11-04
1975-09-19
Multiple photoflash lamp units
Country Status (2)
Country
Link
JP
(1)
JPS5168226A
(en)
GB
(1)
GB1525728A
(en)
Families Citing this family (3)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
US4104705A
(en)
*
1977-06-13
1978-08-01
General Electric Company
Photoflash lamp array having shielded switching circuit
US4167773A
(en)
*
1977-08-18
1979-09-11
General Electric Company
Photoflash lamp array having contoured sheet shield
US4133023A
(en)
*
1977-12-14
1979-01-02
General Electric Company
Flash lamp array having electrical shield
Family Cites Families (12)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
US2447168A
(en)
*
1942-05-12
1948-08-17
Telegraph Constr & Maintenance
High-frequency electric conductors and cables
US2964683A
(en)
*
1957-06-24
1960-12-13
Eastman Kodak Co
Shielded printed-circuit construction
US3249818A
(en)
*
1963-02-13
1966-05-03
Gen Electric
D. c. power distribution arrangement for high frequency applications
US3328514A
(en)
*
1964-11-13
1967-06-27
Bell Telephone Labor Inc
Shielded jacketed-pair communications wire
DE1296520B
(en)
*
1965-07-30
1969-05-29
Agfa Gevaert Ag
Multiple flash device
NL154332B
(en)
*
1966-06-04
1977-08-15
Philips Nv
SERIES FLASH LUMINAIRES WITH FLASH LAMPS THAT CAN BE LIGHTED BACKGROUND.
US3436467A
(en)
*
1966-09-09
1969-04-01
Honeywell Inc
Electric shield and insulator
NL6804718A
(en)
*
1968-04-04
1969-10-07
US3608451A
(en)
*
1969-09-18
1971-09-28
Lester S Kelem
Structure for exposing photographic film with flash illumination
DE2001798A1
(en)
*
1970-01-16
1971-07-22
Agfa Gevaert Ag
Flash device
US3721746A
(en)
*
1971-10-01
1973-03-20
Motorola Inc
Shielding techniques for r.f. circuitry
GB1377682A
(en)
*
1972-03-01
1974-12-18
Electronic Components Ltd
Thick film printed circuitry
1975
1975-09-19
GB
GB3850375A
patent/GB1525728A/en
not_active
Expired
1975-10-21
JP
JP12597875A
patent/JPS5168226A/en
active
Granted
Also Published As
Publication number
Publication date
JPS5168226A
(en)
1976-06-12
DE2549051A1
(en)
1976-07-08
DE2549051B2
(en)
1977-04-21
JPS5332256B2
(en)
1978-09-07
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Legal Events
Date
Code
Title
Description
1979-02-07
PS
Patent sealed
1987-05-07
PCNP
Patent ceased through non-payment of renewal fee
