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US3358476A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photoflash lamp ignition system
Assignee: Philips North America LLC
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Filing: 1966-07-20
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Granted: 1967-12-19
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Expires: 1986-07-20
Abstract
No abstract record available.
Inventors
- 👤 Bruce T Buzalski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 19:22
CPC Classifications
F; F21; F21K; F21K5/00; F21K5/02; F21K5/023
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
126 words
A PHOTOFLASH LAMP COMPRISING: (A) A SEALED LIGHT TRANSMITTING ENCLOSURE HAVING A FLASH PRODUCING MATERIAL DISPOSED THEREIN; (B) A PAIR OF SPACED ENERGY TRANSMITTING MEANS EXTENDING INTO SAID ENCLOSURE; (C) A LAYER OF ELECTRICALLY CONDUCTIVE MATERIAL ADHERED ON AN INSULATING SUBSTRATE WITHIN SAID ENCLOSURE, SAID PAIR OF ENERGY TRANSMITTING MEANS ELECTRICALLY CONNECTED TO SPACED LOCATIONS ON SAID LAYER OF CONDUCTIVE MATERIAL, SAID LAYER OF CONDUCTIVE MATERIAL HAVING A CONSTRICTED AREA INTERMEDIATE THE CONNECTIONS THERETO TO PROVIDE FOR AN INCREASE IN DENSITY OF ANY CURRENT PASSING THERETHROUGH; AND (D) A PRIMER CHARGE ADHERED TO THE CONSTRICTED AREA OF SAID LAYER OF CONDUCTIVE MATERIAL AND ADAPTED TO IGNITE IN RESPONSE TO ELECTRICAL ENERGY OF PREDETERIGNITE MAGNITUDE PASSING THROUGH SAID CONSTRICTED AREA TO THEREBY ACTUATE SAID FLASH PRODUCING MATERIAL.
Claim 2
Dependent Claim
126 words
A PHOTOFLASH LAMP COMPRISING: (A) A SEALED LIGHT TRANSMITTING ENCLOSURE HAVING A FLASH PRODUCING MATERIAL DISPOSED THEREIN; (B) A PAIR OF SPACED ENERGY TRANSMITTING MEANS EXTENDING INTO SAID ENCLOSURE; (C) A LAYER OF ELECTRICALLY CONDUCTIVE MATERIAL ADHERED ON AN INSULATING SUBSTRATE WITHIN SAID ENCLOSURE, SAID PAIR OF ENERGY TRANSMITTING MEANS ELECTRICALLY CONNECTED TO SPACED LOCATIONS ON SAID LAYER OF CONDUCTIVE MATERIAL, SAID LAYER OF CONDUCTIVE MATERIAL HAVING A CONSTRICTED AREA INTERMEDIATE THE CONNECTIONS THERETO TO PROVIDE FOR AN INCREASE IN DENSITY OF ANY CURRENT PASSING THERETHROUGH; AND (D) A PRIMER CHARGE ADHERED TO THE CONSTRICTED AREA OF SAID LAYER OF CONDUCTIVE MATERIAL AND ADAPTED TO IGNITE IN RESPONSE TO ELECTRICAL ENERGY OF PREDETERIGNITE MAGNITUDE PASSING THROUGH SAID CONSTRICTED AREA TO THEREBY ACTUATE SAID FLASH PRODUCING MATERIAL.
References Cited (Backward Citations)
US2571799A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-12-18 | 1971-06-19 | 1971-12-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-12-18 | 1975-06-19 | 1975-12-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-12-18 | 1979-06-19 | 1979-12-19 | $7700.00 | Window Closed / Lapsed |