US3267985A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pulse combustion apparatus
Assignee: Individual
•
Filing: 1964-03-12
•
Granted: 1966-08-23
•
Expires: 1984-03-12
Abstract
No abstract record available.
Inventors
- 👤 John A Kitchen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:16
CPC Classifications
F; F23; F23C; F23C15/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
72 words
A PULSE COMBUSTION APPARATUS COMPRISING A COMBUSTION CHAMBER HAVING AN INLET AND AT LEAST ONE OUTLET, MEANS FOR ADMITTING A CHARGE OF AIR AND FUEL INTO THE COMBUSTION CHAMBER THROUGH THE INLET THEREOF AND IN TIMED RELATION WITH PRESSURE THEREIN, AN AIR CUSHION CHAMBER TO PROVIDE A RESERVOIR FOR AIR AND HAVING AN INLET FOR AIR AND AN OUTLET IN COMMUNICATION WITH THE AIR AND FUEL ADMITTING MEANS, AND FUEL PRESSURE REGULATING
Claim 2
Dependent Claim
72 words
A PULSE COMBUSTION APPARATUS COMPRISING A COMBUSTION CHAMBER HAVING AN INLET AND AT LEAST ONE OUTLET, MEANS FOR ADMITTING A CHARGE OF AIR AND FUEL INTO THE COMBUSTION CHAMBER THROUGH THE INLET THEREOF AND IN TIMED RELATION WITH PRESSURE THEREIN, AN AIR CUSHION CHAMBER TO PROVIDE A RESERVOIR FOR AIR AND HAVING AN INLET FOR AIR AND AN OUTLET IN COMMUNICATION WITH THE AIR AND FUEL ADMITTING MEANS, AND FUEL PRESSURE REGULATING
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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) | 1969-08-22 | 1970-02-21 | 1970-08-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-22 | 1974-02-21 | 1974-08-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-22 | 1978-02-21 | 1978-08-23 | $7700.00 | Window Closed / Lapsed |