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US3726092A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Variable exhaust system for combustion engine
Assignee: Individual
•
Filing: 1971-03-29
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Granted: 1973-04-10
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Expires: 1991-03-29
Abstract
Abstract An exhaust system is disclosed with movable elements to accommodate various operating states of an associated engine. In one embodiment a diverging megaphone faces a reflector which may be variously positioned in relation to the end of the megaphone, while in a second embodiment an expansion chamber is provided of various effective size in accordance with engine operation. Manual control means is disclosed as a part of the system for accomplishing various positions, as well as a structure for controlling the state of the exhaust system in accordance with the position of the engine throttle.
Inventors
- 👤 R Raczuk
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 10:11
CPC Classifications
F; F01; F01N; F01N1/00; F01N1/16; F01N1/166
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
104 words
An exhaust system for a combustion engine, having an exhaust port, comprising: a housing chamber including a conical diffusing section and an integral concentric cylindrical section; means for coupling said conical diffusing section of said housing chamber to said exhaust port; an internal conical member slidably received in said housing chamber in facing-opposed concentric relationship to said conical diffusing section; spring biasing means for urging said internal conical member whereby to separate said member from said conical diffusing section; and an actuator means for moving said internal conical member to various relative positions in said housing chamber for different operating speeds of said engine.
Claim 2
Dependent Claim
104 words
An exhaust system for a combustion engine, having an exhaust port, comprising: a housing chamber including a conical diffusing section and an integral concentric cylindrical section; means for coupling said conical diffusing section of said housing chamber to said exhaust port; an internal conical member slidably received in said housing chamber in facing-opposed concentric relationship to said conical diffusing section; spring biasing means for urging said internal conical member whereby to separate said member from said conical diffusing section; and an actuator means for moving said internal conical member to various relative positions in said housing chamber for different operating speeds of said engine.
Claim 3
Dependent Claim
43 words
A system according to claim 1 wherein said internal conical member further inCludes an elongate, integral concentric tube and wherein said spring biasing means comprises a coil spring positioned on said tube for providing a force between said tube and said housing chamber.
Claim 4
Dependent Claim
25 words
A system according to claim 1 wherein said actuator means comprises a coupling from the throttle control of said engine to said internal conical member.
Claim 5
Dependent Claim
48 words
A system according to claim 1 wherein said actuator means comprises a cylindrical body, a telescopic rod slidably received in said body, a radially extending handle affixed to said rod for locking engagement with said body, and a cable extending from said rod to said internal conical member.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-04-09 | 1976-10-09 | 1977-04-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-09 | 1980-10-09 | 1981-04-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-09 | 1984-10-09 | 1985-04-10 | $7700.00 | Window Closed / Lapsed |