US3278451A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flexible smoke expansion chamber
Assignee: Philips North America LLC
•
Filing: 1963-11-14
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Granted: 1966-10-11
•
Expires: 1983-11-14
Abstract
No abstract record available.
Inventors
- 👤 Gordon E Childs
- 👤 Stanley A Lopenski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 05:27
CPC Classifications
H; H01; H01K; H01K3/00; H01K3/005
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
70 words
A DEVICE FOR DELIVERING POWDER SMOKE TO AN ELECTROSTATIC COATING APPARATUS COMPRISING: (A) A SMOKE GENERATOR FOR SUSPENDING THE POWDER PARTICLES IN A GASEOUS MEDIUM AND CYCLICALLY DELIVERING THE POWDER SMOKE THEREFROM, (B) AN EXPANSION CHAMBER CONNECTED TO SAID SMOKE GENERATOR FOR BUILDING UP THE VOLUME OF THE POWDER SMOKE CYCLICALLY INTRODUCED INTO SAID CHAMBER FROM SAID GENRATOR, SAID EXPANSION CHAMBER COMPRISING A FLEXIBLE MATERIAL EXPANSIBLE UNDER PRESSURE OF THE
Claim 2
Independent Claim
70 words
A DEVICE FOR DELIVERING POWDER SMOKE TO AN ELECTROSTATIC COATING APPARATUS COMPRISING: (A) A SMOKE GENERATOR FOR SUSPENDING THE POWDER PARTICLES IN A GASEOUS MEDIUM AND CYCLICALLY DELIVERING THE POWDER SMOKE THEREFROM, (B) AN EXPANSION CHAMBER CONNECTED TO SAID SMOKE GENERATOR FOR BUILDING UP THE VOLUME OF THE POWDER SMOKE CYCLICALLY INTRODUCED INTO SAID CHAMBER FROM SAID GENRATOR, SAID EXPANSION CHAMBER COMPRISING A FLEXIBLE MATERIAL EXPANSIBLE UNDER PRESSURE OF THE
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-10-10 | 1970-04-11 | 1970-10-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-10 | 1974-04-11 | 1974-10-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-10 | 1978-04-11 | 1978-10-11 | $7700.00 | Window Closed / Lapsed |