Patent US3898804A successfully refreshed from Google Patents.
US3898804A
Expired / Lapsed
US
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Structure of an exhaust manifold of a rotary engine
Assignee: Toyota Motor Corp
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Filing: 1974-04-30
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Granted: 1975-08-12
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Expires: 1994-04-30
Abstract
Abstract A structure of an exhaust manifold of a multi-rotor type rotary engine, wherein individual exhaust ports corresponding to individual combustion chambers are connected to a common manifold reactor in the manner that the lines of ejection of the individual exhaust ports cut one another at a point located within a space confined in the manifold reactor.
Inventors
- 👤 Minoru Morita
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 11:15
CPC Classifications
F; F01; F01N; F01N13/00; F01N13/08; F01N13/10; F01N3/00; F01N3/08; F01N3/10; F01N3/24; F01N3/26; F02; F02B; F02B55/00; F02B55/16; F01N3/30; F01N3/34; Y; Y10; Y10S; Y10S60/00; Y10S60/901
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
70 words
A structure of an exhaust manifold of a multi-rotor type rotary engine which comprises a plurality of rotors, wherein exhaust gases delivered from individual combustion chambers corresponding to individual rotors are introduced into a common manifold reactor, characterized in that the lines of ejection of individual exhaust ports corresponding to said individual combustion chambers substantially cut one another at a point located within an internal space of the manifold reactor.
Claim 2
Dependent Claim
70 words
A structure of an exhaust manifold of a multi-rotor type rotary engine which comprises a plurality of rotors, wherein exhaust gases delivered from individual combustion chambers corresponding to individual rotors are introduced into a common manifold reactor, characterized in that the lines of ejection of individual exhaust ports corresponding to said individual combustion chambers substantially cut one another at a point located within an internal space of the manifold reactor.
Claim 3
Dependent Claim
28 words
A structure of an exhaust manifold according to claim 1, wherein said point is located in the depth of the manifold reactor sufficiently distant from the exit thereof.
Claim 4
Dependent Claim
43 words
A structure of an exhaust manifold according to claim 1, wherein the axis of an exhaust port which opens into the manifold reactor at a portion relatively close to the exit of the reactor is curved toward the depth of the manifold reactor.
Claim 5
Dependent Claim
45 words
A structure of an exhaust manifold according to claim 1, wherein the axis of an exhaust port which opens into the manifold reactor at a portion located relatively close to the exit of the reactor is straightly inclined toward the depth of the manifold reactor.
Claim 6
Dependent Claim
29 words
A structure of an exhaust manifold according to claim 1, wherein the peripheral portion of said exhaust port is thermally insulated from a motor housing surrounding said wall portion.
Claim 7
Dependent Claim
31 words
A structure of an exhaust manifold according to claim 5, wherein said peripheral wall portion of the exhaust port is formed of a tubular member made of a heat insulating material.
Claim 8
Dependent Claim
49 words
A structure of an exhaust manifold according to claim 5, wherein the peripheral wall portion of the exhaust port is formed of a tubular member which is mounted into a corresponding opening formed in a rotor housing in a manner to leave an annular space around said tubular 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) | 1978-08-11 | 1979-02-10 | 1979-08-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-08-11 | 1983-02-10 | 1983-08-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-08-11 | 1987-02-10 | 1987-08-12 | $7700.00 | Window Closed / Lapsed |