US4967704A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air intake device for engine of marine propulsion boat
Assignee: Yamaha Marine Co Ltd
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Filing: 1989-05-26
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Granted: 1990-11-06
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Expires: 2009-05-26
Abstract
Abstract Two embodments of induction devices for V-type engines wherein a compact configuration is achieved by having the inlet for the induction device disposed between the area defined by the associated induction devices of the engine.
Inventors
- 👤 Hirofumi Imaeda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 02:34
CPC Classifications
F; F02; F02M; F02M35/00; F02M35/10; F02M35/1015; F02M35/10183; F02M35/10006; F02M35/10019; F02M35/1019; F02M35/104; F02M35/116; F02M35/12; F02M35/1205; F02B; F02B75/00; F02B75/02; F02B2075/022; F02B2075/025; F02B75/16; F02B75/18; F02B2075/1804; F02B2075/1824; F02B61/00; F02B61/04; F02B61/045; F02B75/22; F02M35/16; F02M35/165; F02M35/167
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
74 words
An induction system for an engine comprised of a pair of angularly disposed inductuion devices having inlet portions, and outlet ends disposed closer to each other than said inlet portions, air intake means associated with said induction devices and having outlet means communicating with said inlet portions for delivering air thereto, and air inlet means for admitting atmospheric air to said intake device means, said air inlet means being disposed between said induction devices.
Claim 2
Dependent Claim
74 words
An induction system for an engine comprised of a pair of angularly disposed inductuion devices having inlet portions, and outlet ends disposed closer to each other than said inlet portions, air intake means associated with said induction devices and having outlet means communicating with said inlet portions for delivering air thereto, and air inlet means for admitting atmospheric air to said intake device means, said air inlet means being disposed between said induction devices.
Claim 3
Dependent Claim
22 words
An induction system as set forth in claim 1 wherein the induction devices are disposed at an acute angle to each other.
Claim 4
Dependent Claim
22 words
An induction system as set forth in claim 2 wherein the induction devices deliver air to different chambers of the same engine.
Claim 5
Dependent Claim
28 words
An induction system as set forth in claim 3 wherein the different chambers comprise crankcase chambers and wherein the associated engine is of the crankcase compression, two-cycle type.
Claim 6
Dependent Claim
15 words
An induction system as set forth in claim 4. wherein the induction devices comprise carburetors.
Claim 7
Dependent Claim
40 words
An induction system as set forth in claim 1 wherein the engine is comprised of pairs of angularly disposed cylinder banks and the intake devices are angularly related so as to form a generally X-shape configuration with the cylinder banks.
Claim 8
Dependent Claim
44 words
An induction system as set forth in claim 1 in combination with an outboard motor wherein the engine is supported with its output shaft rotatably journaled about a vertically extending axis and wherein the induction devices are formed at the front of the engine.
Claim 9
Dependent Claim
22 words
An outboard motor as set forth in claim 1 wherein the induction devices are disposed at an acute angle to each other.
Claim 10
Dependent Claim
22 words
An outboard motor as set forth in claim 8 wherein the induction devices deliver air to different chambers of the same engine.
Claim 11
Dependent Claim
28 words
An outboard motor as set forth in claim 9 wherein the different chambers comprise crankcase chambers and wherein the associated engine is of the crankcase compression, two-cycle type.
Claim 12
Dependent Claim
15 words
An outboard motor as set forth in claim 10 wherein the induction devices comprise carburetors.
Claim 13
Dependent Claim
40 words
An outboard motor as set forth in claim 11 wherein the engine is comprised of pairs of angularly disposed cylinder banks and the intake devices are angularly related so as to form a generally X-shape configuration with the cylinder banks.
Claim 14
Dependent Claim
30 words
An induction system as set forth in claim 1 wherein the air inlet means comprises an inlet device facing in the direction toward the outlet ends of the induction devices.
Claim 15
Dependent Claim
38 words
An induction system as set forth in claim 13 wherein the air flows through the air intake device means from the air inlet means in a re-entrance fashion to exit to the inlet portions of the induction devices.
Claim 16
Dependent Claim
30 words
An induction system as set forth in claim 7 wherein the air inlet means comprises an inlet device facing in the direction toward the outlet ends of the induction devices.
Claim 17
Dependent Claim
38 words
An induction system as set forth in claim 15 wherein the air flows through the air intake device means from the air inlet means in a re-entrance fashion to exit to the inlet portions of the induction devices.
References Cited (Backward Citations)
US2869527A
Cited
US3520284A
Cited
JPS5445408A
Cited
US4474144A
Cited
US4261305A
Cited
US4266514A
Cited
US4463711A
Cited
JPS58110845A
Cited
JPS5999027A
Cited
US4773884A
Cited
JPS6318179A
Cited
US4702202A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-11-05 | 1994-05-07 | 1994-11-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-11-05 | 1998-05-07 | 1998-11-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-11-05 | 2002-05-07 | 2002-11-06 | $7700.00 | Window Closed / Lapsed |