US4356533A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric flash device
Assignee: Fuji Koeki Corp
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Filing: 1980-03-24
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Granted: 1982-10-26
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Expires: 2000-03-24
Abstract
Abstract An electric flash device comprises a housing, a flash unit mounted in the housing and having a reflector which comprises a frame, a reflecting mirror carried by the frame, and a flash tube inserted into the reflecting mirror and having at least one pair of main current electrodes and a trigger electrode for triggering the flash tube and electrically connected to the reflecting mirror, the frame of the reflector being formed integrally with the housing.
Inventors
- 👤 Yoshiyuki Takematsu
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 12:49
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: 10
Claim 1
Independent Claim
75 words
An electric flash device comprising a housing, a flash unit mounted in said housing and having a reflector which comprises a frame, a reflecting mirror carried by said frame, and a flash tube inserted into said reflecting mirror and having at least one pair of main current electrodes and a trigger electrode for triggering said flash tube and electrically connected to said reflecting mirror, said frame of the reflector being formed integrally with said housing.
Claim 2
Dependent Claim
75 words
An electric flash device comprising a housing, a flash unit mounted in said housing and having a reflector which comprises a frame, a reflecting mirror carried by said frame, and a flash tube inserted into said reflecting mirror and having at least one pair of main current electrodes and a trigger electrode for triggering said flash tube and electrically connected to said reflecting mirror, said frame of the reflector being formed integrally with said housing.
Claim 3
Dependent Claim
38 words
An electric flash device as claimed in claim 1, wherein said reflecting mirror is 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 4
Dependent Claim
44 words
An electric flash device as claimed in claim 1, wherein said trigger electrode comprises a lead wire and fastening means for fastening said lead wire to said reflector so as to electrically connect said lead wire to said reflecting mirror carried by said frame.
Claim 5
Dependent Claim
24 words
An electric flash device as claimed in claim 2, wherein the frame comprises an insulation material and the reflecting mirror comprises a metallic material.
Claim 6
Dependent Claim
58 words
An electric flash device as claimed in claim 4, wherein said frame has 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 7
Dependent Claim
27 words
An electric flash device as claimed in claim 5, wherein said slots are semicircular and are centrally disposed with respect to said rear portion of said frame.
Claim 8
Dependent Claim
52 words
An electric flash device as claimed in claim 5, wherein said flash tube has 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 9
Dependent Claim
58 words
An electric flash device as claimed in claim 3, wherein said fastening means of the trigger electrode includes a conductive plate having a portion in contact with the reflecting mirror and a projection, 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 10
Dependent Claim
33 words
An electric flash device as claimed in claim 3, wherein said frame has an inner surface, and wherein said reflecting mirror is constructed by depositing aluminum on the inner surface of the frame.
References Cited (Backward Citations)
US4156889A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-10-25 | 1986-04-26 | 1986-10-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-10-25 | 1990-04-26 | 1990-10-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-10-25 | 1994-04-26 | 1994-10-26 | $7700.00 | Window Closed / Lapsed |