US3848408A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Counter-wave pulse jet engine
Assignee: Individual
•
Filing: 1973-02-08
•
Granted: 1974-11-19
•
Expires: 1993-02-08
Abstract
Abstract A pulse jet engine having a housing forming a longitudinal, enclosed resonance chamber with spaced end walls functioning as reflecting walls and an exit port arranged substantially midway between the end walls. Ports are provided in the end walls for permitting a gas, such as air, to pass into the chamber. Flap valves are associated with these ports for closing same during intermittent combustions occurring in the chamber. The housing may include concentrically arranged inner and outer tubes, with adjacent ends of these tubes provided with the intake ports. The end of the outer tube spaced from its one end extends beyond the curves toward the adjacent end of the inner tube to form an annulus arranged for deflecting gases passing between the inner and outer tubes. This annulus has a concentric opening forming the exit port. A tailpipe may be connected concentrically to the annulus and arranged extending coaxially from the inner and outer tubes. Further, a reflecting wall having a port and an associated flap valve is arranged in the tailpipe for making the tailpipe a further resonance chamber.
Inventors
- 👤 L Tompkins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 06:28
CPC Classifications
F; F02; F02K; F02K7/00; F02K7/02; F02K7/04
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
153 words
A combustion engine, comprising, in combination: a. a housing forming an enclosed, resonance chamber having a pair of adjacent end portions; b. a port provided in one of the housing end portions for permitting a fluid to pass into the chamber; c. valve means associated with the port for closing same during intermittent combustions occurring in the chamber; d. a further port arranged at the other of the housing end portions and being also provided with an associated further valve means for admitting air into the resonance chamber when a condition of low pressure is present in a portion of the chamber adjacent the further valve means; e. deflection means provided on the housing and arranged between the chamber end portions for deflecting fluid passing between the chamber end portions; and f. exit means provided on the housing and arranged between the chamber end portions for permitting combustion gases to exit the chamber.
Claim 2
Dependent Claim
153 words
A combustion engine, comprising, in combination: a. a housing forming an enclosed, resonance chamber having a pair of adjacent end portions; b. a port provided in one of the housing end portions for permitting a fluid to pass into the chamber; c. valve means associated with the port for closing same during intermittent combustions occurring in the chamber; d. a further port arranged at the other of the housing end portions and being also provided with an associated further valve means for admitting air into the resonance chamber when a condition of low pressure is present in a portion of the chamber adjacent the further valve means; e. deflection means provided on the housing and arranged between the chamber end portions for deflecting fluid passing between the chamber end portions; and f. exit means provided on the housing and arranged between the chamber end portions for permitting combustion gases to exit the chamber.
Claim 3
Dependent Claim
21 words
A structure as defined in claim 1, wherein the exit permitting means is arranged substantially midway between the chamber end portions.
Claim 4
Dependent Claim
139 words
A combustion engine, comprising, in combination: a. a housing forming an enclosed, resonAnce chamber; b. an intake port provided in the housing for permitting a fluid to pass into the chamber; c. valve means associated with the intake port for closing same during intermittent combustions occurring in the chamber; d. an exit port provided in the housing for permitting a fluid to pass from the chamber; e. valve means associated with the exit port for permitting a predetermined pressure to open the associated valve means and pass a fluid from the chamber; f. a tailpipe connected to and surrounding the exit port, and arranged extending from the housing; and g. a blocking member having a further port and arranged in the tailpipe, and a valve element associated with the further port for making the tailpipe a further resonance chamber.
Claim 5
Dependent Claim
139 words
A combustion engine, comprising, in combination: a. a housing forming an enclosed, resonAnce chamber; b. an intake port provided in the housing for permitting a fluid to pass into the chamber; c. valve means associated with the intake port for closing same during intermittent combustions occurring in the chamber; d. an exit port provided in the housing for permitting a fluid to pass from the chamber; e. valve means associated with the exit port for permitting a predetermined pressure to open the associated valve means and pass a fluid from the chamber; f. a tailpipe connected to and surrounding the exit port, and arranged extending from the housing; and g. a blocking member having a further port and arranged in the tailpipe, and a valve element associated with the further port for making the tailpipe a further resonance chamber.
Claim 6
Dependent Claim
43 words
A structure as defined in claim 3, wherein the housing includes concentrically arranged inner and outer tubes, with adjacent one ends of the tubes provided with ports, and means having the ports arranged in the tubes at the one ends for blocking same.
Claim 7
Dependent Claim
70 words
A structure as defined in claim 4, wherein the tubes have other ends spaced from the one ends, and the other end of the outer tube extends beyond and curves toward the other end of the inner tube and forms an annulus arranged for deflecting gases passing between the inner and outer tubes, the annulus forming the exit permitting means as an opening arranged concentrically with respect to the tubes.
Claim 8
Dependent Claim
44 words
A structure as defined in claim 1, wherein the housing includes concentrically arranged inner and outer tubes, with adjacent one ends of the tubes provided with the ports, and means having the ports arranged in the tubes at the one ends for blocking same.
Claim 9
Dependent Claim
70 words
A structure as defined in claim 6, wherein the tubes have other ends spaced from the one ends, and the other end of the outer tube extends beyond and curves toward the other end of the inner tube and forms an annulus arranged for deflecting gases passing between the inner and outer tubes, the annulus forming the exit permitting means as an opening arranged concentrically with respect to the tubes.
Claim 10
Dependent Claim
53 words
A structure as defined in claim 7, wherein the outer tube is provided with a canopy portion arranged extending from the one end of the outer tube and away from the tubes for forming a chamber having volume larger than a fluid volume passed through the blocking means ports in an engine cycle.
Claim 11
Dependent Claim
28 words
A structure as defined in claim 7, further including a tailpipe connected to a concentric with the annulus, and arranged extending coaxially from the inner and outer tubes.
Claim 12
Dependent Claim
36 words
A structure as defined in claim 9, further including a blocking member having a port and arranged in the tailpipe, and a valve element associated with the port for making the tailpipe a further resonance chamber.
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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) | 1977-11-18 | 1978-05-20 | 1978-11-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-11-18 | 1982-05-20 | 1982-11-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-11-18 | 1986-05-20 | 1986-11-19 | $7700.00 | Window Closed / Lapsed |