Patent US5012789A successfully refreshed from Google Patents.
US5012789A
Expired / Lapsed
US
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Cold start by-pass valve
Assignee: SSI Corp Inc
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Filing: 1990-06-18
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Granted: 1991-05-07
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Expires: 2010-06-18
Abstract
Abstract A cold start air control device for an internal combustion engine of the type having an air delivery system in which the delivery of air to a vacuum generating manifold is controlled by a throttle valve and a by-pass valve and parallel with the throttle valve includes a casing that defines a passageway in parallel with the throttle valve and the by-pass valve and which has a cross-sectional area greater than that of the by-pass valve so as to offer a less restricted air flow path than that offered by the by-pass valve. The passageway provides communication between the manifold and atmosphere and a valve is disposed within the passageway for opening and closing the passageway in response to the vacuum level generated by the manifold.
Inventors
- 👤 Carol A. Spicuzza
- 👤 Lawrence B. Reimer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 11:39
CPC Classifications
F; F02; F02M; F02M1/00
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
138 words
A cold start air control device for an internal combustion engine having an air delivery system in which the delivery of air to a vacuum generating manifold is controlled by a throttle valve and a by-pass valve having a predetermined crosssectional area and disposed in parallel with the throttle valve, said control device comprising: means defining a passageway in parallel with the throttle valve and the by-pass valve and having a cross-sectional area greater than the by-pass valve so as to offer a less restricted air flow path than the by-pass valve, said passageway providing communication between the manifold and atmosphere, valve means disposed within said passageway for opening and closing said passageway, said valve means biased to said open position and movable to said closed position in response to a predetermined vacuum level generated in the manifold.
Claim 2
Dependent Claim
138 words
A cold start air control device for an internal combustion engine having an air delivery system in which the delivery of air to a vacuum generating manifold is controlled by a throttle valve and a by-pass valve having a predetermined crosssectional area and disposed in parallel with the throttle valve, said control device comprising: means defining a passageway in parallel with the throttle valve and the by-pass valve and having a cross-sectional area greater than the by-pass valve so as to offer a less restricted air flow path than the by-pass valve, said passageway providing communication between the manifold and atmosphere, valve means disposed within said passageway for opening and closing said passageway, said valve means biased to said open position and movable to said closed position in response to a predetermined vacuum level generated in the manifold.
Claim 3
Dependent Claim
19 words
The cold start air control device defined in claim 1 wherein said predetermined vacuum level is substantially 5" Hg.
Claim 4
Dependent Claim
64 words
The cold start air control device defined in claim 1 wherein said passageway defining means comprises: a casing disposed on the throttle body and having a first port communicating with the manifold and a second port communicating with atmosphere, a passageway connecting said first and second ports and said valve means disposed within said passageway so as to open and close said first port.
Claim 5
Dependent Claim
64 words
The cold start air control device defined in claim 3 wherein said casing is disposed between the by-pass valve and the throttle valve and said first port includes a pair of openings in said casing with one of said openings communicating with the manifold side of the by-pass valve and the other of said openings communicating with the manifold side of the throttle valve.
Claim 6
Dependent Claim
59 words
The cold start air cont.rol device defined in claim 3 wherein said casing is disposed between the by-pass valve and the throttle valve and said second port includes a pair of openings in said casing with one of said openings communicating with the atmosphere side of the by-pass valve and the other of said openings communicating with the atmosphere.
Claim 7
Dependent Claim
20 words
The cold start air control device defined in claim 3 wherein said valve means is pivotally disposed within said casing.
Claim 8
Dependent Claim
123 words
A cold start air control device for an internal combustion engine having an air delivery system in which the delivery of air to a vacuum generating manifold is controlled by a throttle valve and a by-pass valve having a predetermined cross-sectional area and disposed in parallel with the throttle valve, said control device comprising: a casing disposed on the throttle body and having a first port communicating with the manifold and a second port communicating with atmosphere, a passageway connecting said first and second ports and valve means disposed within said passageway for opening and closing said passageway, said valve means biased to said open position and movable to said closed position in response to a predetermined vacuum level generated in the manifold.
Claim 9
Dependent Claim
123 words
A cold start air control device for an internal combustion engine having an air delivery system in which the delivery of air to a vacuum generating manifold is controlled by a throttle valve and a by-pass valve having a predetermined cross-sectional area and disposed in parallel with the throttle valve, said control device comprising: a casing disposed on the throttle body and having a first port communicating with the manifold and a second port communicating with atmosphere, a passageway connecting said first and second ports and valve means disposed within said passageway for opening and closing said passageway, said valve means biased to said open position and movable to said closed position in response to a predetermined vacuum level generated in the manifold.
Claim 10
Dependent Claim
64 words
The cold start air control device defined in claim 7 wherein said casing is disposed between the by-pass valve and the throttle valve and said first port includes a pair of openings in said casing with one of said openings communicating with the manifold side of the by-pass valve and the other of said openings communicating with the manifold side of the throttle valve.
Claim 11
Dependent Claim
59 words
The cold start air control device defined in claim 7 wherein said casing is disposed between the by-pass valve and the throttle valve and said second port includes a pair of openings in said casing with one of said openings communicating with the atmosphere side of the by-pass valve and the other of said openings communicating with the atmosphere.
Claim 12
Dependent Claim
20 words
The cold start air control device defined in claim 7 wherein said valve means is pivotally disposed within said casing.
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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) | 1994-05-06 | 1994-11-05 | 1995-05-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-05-06 | 1998-11-05 | 1999-05-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-05-06 | 2002-11-05 | 2003-05-07 | $7700.00 | Window Closed / Lapsed |