US3739441A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus and method to fill flashlamps
Assignee: Osram GmbH
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Filing: 1971-10-13
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Granted: 1973-06-19
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Expires: 1991-10-13
Abstract
Abstract To make flashlamps in which the filler material has sharply bent foil shreds, which are buckled, the shreds are sucked through a supply tube by an air flow, preferably of about 3 at and accelerated in the first conduit, which terminates in a chamber, or end wall against which the threads are flung so that they will buckle by the impact; the buckled foil shreds are then removed by an air flow of, for example from 2 to 3 at, in a direction essentially perpendicular to the original direction of flow, the second conduit terminating in a second chamber having another end wall against which the already buckled shreds are flung to be again buckled to form final sharp bends. The sharply bent shreds are then moved by means of residual air flow into a lamp bulb, and then sealed into the bulb.
Inventors
- 👤 P Kaufmann
- 👤 R Liepert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 17:01
CPC Classifications
F; F21; F21K; F21K5/00; F21K5/02
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
243 words
Apparatus for filling a flashlamp bulb with combustible material comprising: first conduit means for receiving and conducting foil shreds of from 2 to 10 X 10 4 mm2 cross sectional area under a predetermined airflow; a first wall located at the end of the first conduit means substantially perpendicular to the terminal end of the first conduit means upon which said shreds impinge; second conduit means having an inlet adjacent the wall for conducting foil shreds from said first conduit means and wall in a direction substantially perpendicular to the direction of said first conduit means under a second predetermined airflow, said second predetermined airflow being less than, or equal to said first airflow; a second wall located at the end of the second conduit means substantially perpendicular to the terminal end of the second conduit means upon which the shreds from said second conduit means impinge said first and second airflows projecting the shreds against said respective walls to crumple the shreds to have from 8 to 50 sharp bends per 100mm length, with radii of curvature less than 0.3mm and bend angles less than 60*, and forming an approximate ball-shaped shred mass of from 8-40mm2 cross sectional area per 100mm shred length; and third conduit means having an inlet adjacent the second wall for conducting shreds from said second conduit means and second wall to said flashlamp bulb in a direction substantially perpendicular to said second conduit means under residual airflow.
Claim 2
Dependent Claim
243 words
Apparatus for filling a flashlamp bulb with combustible material comprising: first conduit means for receiving and conducting foil shreds of from 2 to 10 X 10 4 mm2 cross sectional area under a predetermined airflow; a first wall located at the end of the first conduit means substantially perpendicular to the terminal end of the first conduit means upon which said shreds impinge; second conduit means having an inlet adjacent the wall for conducting foil shreds from said first conduit means and wall in a direction substantially perpendicular to the direction of said first conduit means under a second predetermined airflow, said second predetermined airflow being less than, or equal to said first airflow; a second wall located at the end of the second conduit means substantially perpendicular to the terminal end of the second conduit means upon which the shreds from said second conduit means impinge said first and second airflows projecting the shreds against said respective walls to crumple the shreds to have from 8 to 50 sharp bends per 100mm length, with radii of curvature less than 0.3mm and bend angles less than 60*, and forming an approximate ball-shaped shred mass of from 8-40mm2 cross sectional area per 100mm shred length; and third conduit means having an inlet adjacent the second wall for conducting shreds from said second conduit means and second wall to said flashlamp bulb in a direction substantially perpendicular to said second conduit means under residual airflow.
Claim 3
Dependent Claim
21 words
Apparatus according to claim 1, wherein said first airflow is approximately 3 atm. and said second airflow is approximately 2-3 atm.
Claim 4
Dependent Claim
26 words
Apparatus according to claim 1, wherein at least one of said conduit means terminates in a chamber, the respective wall forming a wall defining said chamber.
Claim 5
Dependent Claim
33 words
Apparatus according to claim 1, wherein both said conduit means terminate in a chamber, each, the respective wall located at the end of the respective conduit forming a wall defining the respective chamber.
Claim 6
Dependent Claim
200 words
Method of filling a flashlamp bulb with combustible material comprising the steps of sucking in foil shreds of from 2 to 10 X 10 4 mm2 cross sectional area through a supply tube by an aIrflow; feeding the shreds to a first conduit; accelerating the foil shreds in said first conduit; flinging the foil shreds against a first end wall located substantially perpendicular to the terminal end of the first conduit means so that they are flung against the end wall and buckled by the impact against the first stop wall; accelerating the buckled foil shreds by an air flow in a direction substantially perpendicular to the terminal direction of movement of the foils; flinging the shreds against a second end wall located substantially perpendicular to the terminal end of the second conduit means to further buckle the shreds and form final sharp bends therein having from 8 to 50 sharp bends per 100mm of shred length, a radius of curvature less than 0.3mm and a bend angle less than 60*, approximately forming a ball with a cross section area of from 8 to 40mm2 per 100mm of shred length; and passing the sharply bent shreds into the flashlamp bulb.
Claim 7
Dependent Claim
200 words
Method of filling a flashlamp bulb with combustible material comprising the steps of sucking in foil shreds of from 2 to 10 X 10 4 mm2 cross sectional area through a supply tube by an aIrflow; feeding the shreds to a first conduit; accelerating the foil shreds in said first conduit; flinging the foil shreds against a first end wall located substantially perpendicular to the terminal end of the first conduit means so that they are flung against the end wall and buckled by the impact against the first stop wall; accelerating the buckled foil shreds by an air flow in a direction substantially perpendicular to the terminal direction of movement of the foils; flinging the shreds against a second end wall located substantially perpendicular to the terminal end of the second conduit means to further buckle the shreds and form final sharp bends therein having from 8 to 50 sharp bends per 100mm of shred length, a radius of curvature less than 0.3mm and a bend angle less than 60*, approximately forming a ball with a cross section area of from 8 to 40mm2 per 100mm of shred length; and passing the sharply bent shreds into the flashlamp bulb.
Claim 8
Dependent Claim
42 words
Method according to claim 5, wherein the air flow to first buckle the shreds is about 3 at; and the airflow to again buckle the shreds to form the final sharp bends is at a pressure of from 2 to 3 at.
Claim 9
Dependent Claim
107 words
Method according to claim 5, wherein the step of sucking in foil shreds comprises sucking in the foil shreds through a supply tube at an airflow of about 3 at, and includes the step of feeding the shreds to a first conduit; the step of accelerating the foil shreds comprises passing the foil shreds in said first conduit to fling them against the end wall; and the step of accelerating the buckled foil shreds comprises the step of passing the buckled foil shreds in a conduit extending essentially perpendicular to the original direction of flow of the first conduit, and flinging them against the second end wall.
References Cited (Backward Citations)
US2772703A
Cited
US3120694A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-06-18 | 1976-12-18 | 1977-06-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-06-18 | 1980-12-18 | 1981-06-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-06-18 | 1984-12-18 | 1985-06-19 | $7700.00 | Window Closed / Lapsed |