Patent US3320715A successfully refreshed from Google Patents.
US3320715A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for sealing off vessels
Assignee: Philips North America LLC
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Filing: 1964-07-14
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Granted: 1967-05-23
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Expires: 1984-07-14
Abstract
No abstract record available.
Inventors
- 👤 Chauvin Bernard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 09:12
CPC Classifications
H; H01; H01J; H01J9/00; H01J9/40; F; F21; F21K; F21K5/00; F21K5/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
182 words
THE METHOD OF SEALING OFF A DEVICE SUCH AS A PHOTOFLASH LAMP HAVING AN INTERNAL PRESSURE ABOVE ATMOSPHERIC, SAID METHOD COMPRISING: (A) INDEXING SAID DEVICE INTO A SELAING-OFF STATION ADJACENT AN EXHAUST MACHINE TURRET, (B) HERMETICALLY SEALING A PRESSURE CHAMBER AROUND SAID DEVICE, (C) SUPPLYING ILLUMINATING GAS AND AIR UNDER PRESSURE TO A BURNER WITHIN SAID PRESSURE CHAMBER ADJACENT SAID DEVICE, (D) INTRODUCING A GASEOUS ATMOSPHERE UNDER PRESSURE INTO SAID DEVICE AND SIMULTANEOUSLY ADMITTING FLUID PRESSURE INTO SAID CHAMBER AT A PRESSURE HIGHER THAN THAT OF THE GASEOUS ATMOSPHERE WITHIN SAID DEVICE, (E) PRODUCING AND MAINTAINING A SPARK WITHIN THE PRESSURIZED CHAMBER FOR A SHORT INTERVAL TO ASSURE IGNITION OF THE BURNER THEREIN WHEREBY SUCH BURNER WILL HEAT THE EXHAUST TUBULATION OF SAID PRESSURIZED DEVICE TO A SOFTENING TEMPERATURE AND CAUSE CLOSURE THEREOF WITH SEALING OFF OF SAID DEVICE, (F) CUTTING OFF THE SUPPLY OF ILLUMINATING GAS TO SAID BURNER TO CAUSE EXTINGUISHMENT THEREOF, AND (G) SIMULTANEOUSLY DISCONTINUING THE SUPPLY OF A GASEOUS ATMOSPHERE TO SAID DEVICE ALONG WITH DECOMPRESSING SAID PRESSURE CHAMBER AND REMOVING THE LATTER FROM AROUND SAID SEALED-OFF DEVICE.
Claim 2
Independent Claim
182 words
THE METHOD OF SEALING OFF A DEVICE SUCH AS A PHOTOFLASH LAMP HAVING AN INTERNAL PRESSURE ABOVE ATMOSPHERIC, SAID METHOD COMPRISING: (A) INDEXING SAID DEVICE INTO A SELAING-OFF STATION ADJACENT AN EXHAUST MACHINE TURRET, (B) HERMETICALLY SEALING A PRESSURE CHAMBER AROUND SAID DEVICE, (C) SUPPLYING ILLUMINATING GAS AND AIR UNDER PRESSURE TO A BURNER WITHIN SAID PRESSURE CHAMBER ADJACENT SAID DEVICE, (D) INTRODUCING A GASEOUS ATMOSPHERE UNDER PRESSURE INTO SAID DEVICE AND SIMULTANEOUSLY ADMITTING FLUID PRESSURE INTO SAID CHAMBER AT A PRESSURE HIGHER THAN THAT OF THE GASEOUS ATMOSPHERE WITHIN SAID DEVICE, (E) PRODUCING AND MAINTAINING A SPARK WITHIN THE PRESSURIZED CHAMBER FOR A SHORT INTERVAL TO ASSURE IGNITION OF THE BURNER THEREIN WHEREBY SUCH BURNER WILL HEAT THE EXHAUST TUBULATION OF SAID PRESSURIZED DEVICE TO A SOFTENING TEMPERATURE AND CAUSE CLOSURE THEREOF WITH SEALING OFF OF SAID DEVICE, (F) CUTTING OFF THE SUPPLY OF ILLUMINATING GAS TO SAID BURNER TO CAUSE EXTINGUISHMENT THEREOF, AND (G) SIMULTANEOUSLY DISCONTINUING THE SUPPLY OF A GASEOUS ATMOSPHERE TO SAID DEVICE ALONG WITH DECOMPRESSING SAID PRESSURE CHAMBER AND REMOVING THE LATTER FROM AROUND SAID SEALED-OFF DEVICE.
References Cited (Backward Citations)
US2940231A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-05-22 | 1970-11-21 | 1971-05-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-05-22 | 1974-11-21 | 1975-05-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-05-22 | 1978-11-21 | 1979-05-23 | $7700.00 | Window Closed / Lapsed |