US3336646A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic foil shredding, weight-controlling and filling of photoflash lamps
Assignee: Philips North America LLC
•
Filing: 1964-07-22
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Granted: 1967-08-22
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Expires: 1984-07-22
Abstract
No abstract record available.
Inventors
- 👤 Chauvin Bernard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 17:50
CPC Classifications
F; F21; F21K; F21K5/00; F21K5/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
95 words
THE METHOD OF FILLING THE ENVELOPE OF A PHOTOFLASH LAMP WITH A COMBUSTIBLE FOIL CHARGE OF PREDETERMINED SIZE AND WEIGHT, SAID METHOD COMPRISING: (A) SHREDDING A METALLIC FOIL RIBBON OF A DEFINITE WIDTH AND THICKNESS FOR A PREDETERMINED PERIOD OF TIME TO PRODUCE VERY FINE METALLIC STRANDS HAVING A TOTAL PREDETERMINED WEIGHT; (B) TRANSFERRING ALL OF SAID STRANDS INTO A CAVITY; (C) ROTATING SAID STRANDS WHILE IN SAID CAVITY WITH BIDIRECTIONAL FLUID PRESSURE TO CAUSE SAID STRANDS TO PRODUCE A COMBUSTIBLE CHARGE IN THE FORM OF A FLUFFY BALL SUBSTANTIALLY DEVOID OF LOOSE ENDS; AND
Claim 2
Independent Claim
95 words
THE METHOD OF FILLING THE ENVELOPE OF A PHOTOFLASH LAMP WITH A COMBUSTIBLE FOIL CHARGE OF PREDETERMINED SIZE AND WEIGHT, SAID METHOD COMPRISING: (A) SHREDDING A METALLIC FOIL RIBBON OF A DEFINITE WIDTH AND THICKNESS FOR A PREDETERMINED PERIOD OF TIME TO PRODUCE VERY FINE METALLIC STRANDS HAVING A TOTAL PREDETERMINED WEIGHT; (B) TRANSFERRING ALL OF SAID STRANDS INTO A CAVITY; (C) ROTATING SAID STRANDS WHILE IN SAID CAVITY WITH BIDIRECTIONAL FLUID PRESSURE TO CAUSE SAID STRANDS TO PRODUCE A COMBUSTIBLE CHARGE IN THE FORM OF A FLUFFY BALL SUBSTANTIALLY DEVOID OF LOOSE ENDS; AND
References Cited (Backward Citations)
US2773520A
Cited
US3120694A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-08-21 | 1971-02-20 | 1971-08-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-08-21 | 1975-02-20 | 1975-08-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-08-21 | 1979-02-20 | 1979-08-22 | $7700.00 | Window Closed / Lapsed |