US4223372A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric flash device
Assignee: Fuji Koeki Corp
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Filing: 1978-09-05
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Granted: 1980-09-16
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Expires: 1998-09-05
Abstract
Abstract The present invention relates to an electric flash device and, more particularly, to an improvement of the mechanical construction of a flashing member in the electric flash device.
Inventors
- 👤 Yoshiyuki Takematsu
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 18:09
CPC Classifications
H; H01; H01J; H01J61/00; H01J61/02; H01J61/54; H01J61/547; G; G03; G03B; G03B15/00; G03B15/02; G03B15/03; G03B15/05; G03B2215/00; G03B2215/05; G03B2215/0514; G03B2215/0517; G03B2215/0525; G03B2215/0532; G03B2215/055
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
98 words
An electric flash device comprising a housing, a flash unit, and mounting means for mounting said flash unit in said housing, said flash unit comprising a frame, a reflecting mirror carried by said frame, and a flash tube compressively inserted into said reflecting mirror and having at least one pair of main current electrodes and a trigger electrode for triggering said main current electrodes, said trigger electrode comprising a lead wire and fastening means for fastening said lead wire to said frame so as to electrically connect said lead wire to said reflecting mirror carried by said frame.
Claim 2
Dependent Claim
98 words
An electric flash device comprising a housing, a flash unit, and mounting means for mounting said flash unit in said housing, said flash unit comprising a frame, a reflecting mirror carried by said frame, and a flash tube compressively inserted into said reflecting mirror and having at least one pair of main current electrodes and a trigger electrode for triggering said main current electrodes, said trigger electrode comprising a lead wire and fastening means for fastening said lead wire to said frame so as to electrically connect said lead wire to said reflecting mirror carried by said frame.
Claim 3
Dependent Claim
24 words
The device of claim 1, wherein said frame of the flash unit comprises an insulation material and said reflecting mirror comprises a metallic material.
Claim 4
Dependent Claim
53 words
The device of claim 1, said frame having a rear portion, wherein said fastening means includes a pair of slots spaced apart on said rear portion of said frame to form a portion of the frame between said slots, said lead wire being wound on said portion of said frame between said slots.
Claim 5
Dependent Claim
23 words
The device of claim 3, wherein said slots are semi-circular and are centrally disposed with respect to said rear portion of said frame.
Claim 6
Dependent Claim
47 words
The device of claim 3, said flash tube having an axis, said rear portion having an end portion, and wherein said pair of slots are disposed at said end portion of said rear portion of the frame and extend parallel to said axis of the flash tube.
Claim 7
Dependent Claim
44 words
The device of claim 1, wherein said frame of the reflector comprises a metallic plate having an inner surface comprising said reflecting mirror, said metallic plate further including a projection to which said lead wire is connected so as to form said trigger electrode.
Claim 8
Dependent Claim
64 words
The device of claim 1, wherein said fastening means of the trigger electrode includes a conductive plate having a portion in contact with the reflecting mirror and a projection extending outwardly of the reflecting mirror, said frame being discontinuous so as to form an opening therein, said projection extending through said opening, said lead wire being connected to said projection of the conductive plate.
Claim 9
Dependent Claim
17 words
The device of claim 1, including a frame of the reflecting mirror formed integrally with the housing.
Claim 10
Dependent Claim
33 words
The device of claim 8, said reflecting mirror being discontinuous so as to form an opening, and wherein said flash unit includes a flash window provided over said opening of the reflecting mirror.
Claim 11
Dependent Claim
20 words
The device of claim 9, wherein the frame comprises an insulation material and the reflecting mirror comprises a metallic material.
Claim 12
Dependent Claim
54 words
The device of claim 10, said frame having a rear portion, and wherein said fastening means comprises a pair of slots spaced apart in said rear portion of said frame to form a portion of the frame between said slots, said lead wire being wound on said portion of said frame between said slots.
Claim 13
Dependent Claim
23 words
The device of claim 11, wherein said slots are semi-circular and are centrally disposed with respect to said rear portion of the frame.
Claim 14
Dependent Claim
45 words
The device of claim 11, said flash tube having an axis, said rear portion having an end portion, and wherein said slots are disposed at said end portion of said rear portion of the frame and extend parallel to said axis of the flash tube.
Claim 15
Dependent Claim
60 words
The device of claim 9, wherein said fastening means of the trigger electrode includes a conductive plate having a portion in contact with the reflecting mirror and a projection extending outwardly of the reflecting mirror, said frame being discontinuous so as to form an opening in the frame, said lead wire being connected to said projection of the conductive plate.
Claim 16
Dependent Claim
28 words
The device of claim 9, said frame having an inner surface, and wherein said reflecting mirror is constructed by depositing aluminum on the inner surface of the frame.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-09-16 | 1984-03-17 | 1984-09-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-09-16 | 1988-03-17 | 1988-09-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-09-16 | 1992-03-17 | 1992-09-16 | $7700.00 | Window Closed / Lapsed |