US3612018A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermostatically modulated vacuum control valve
Assignee: Eaton Corp
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Filing: 1969-11-10
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Granted: 1971-10-12
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Expires: 1989-11-10
Abstract
Abstract Thermostatically modulated vacuum control valve for controlling the distributor vacuum motor advancing the spark of an internal combustion engine. The valve housing has a vacuum input leading from the housing and a vacuum output leading into the housing and having communication with the vacuum input. The vacuum input is connected with a source of vacuum such as the carburetor of an internal combustion engine. The housing has a second vacuum input connected with the intake manifold of the engine. A diaphragm valve is sealed to a valve chamber in the housing and is seated on a bimetal disk extending across the chamber and having a central opening leading therethrough. The diaphragm valve is biased into engagement with the seat by a spring and is moved out of engagement with the seat by vacuum to control vacuum from the intake manifold. During normal driving speeds, vacuum is obtained directly from the carburetor through the first vacuum input. When the engine is idling and is below a preselected temperature, the vacuum control valve is closed. As the engine temperature increases above this predetermined temperature range, the bimetallic seat will move away from the valve and a connection is made between the intake manifold and the distributor motor. Upon deceleration of the engine, vacuum from the intake manifold will effect opening of the valve and the supply of intake manifold vacuum to the motor.
Inventors
- 👤 George A Soberski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 01:04
CPC Classifications
F; F02; F02P; F02P5/00; F02P5/04; F02P5/05; F02P5/10; F02P5/103; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7737
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
158 words
A temperature-modulated vacuum control valve comprising: a valve housing having, a vacuum input, a vacuum output, and a communicating vacuum chamber between said vacuum input and said vacuum output, a second vacuum input communicating with said housing, a valve chamber in said housing having communication with said second vacuum input and with said communicating vacuum chamber, a valve in said chamber having an annular valve element, a second vacuum chamber in said housing on the opposite side of said valve from said communicating vacuum chamber, a thermally responsive valve seat in said chamber movable axially along said chamber upon changes in temperature and forming a seat for said valve, and having a central passageway leading therethrough encircled by said annular valve element, said valve being opened by vacuum passing through said central passageway and annular valve element to supply vacuum to said communicating vacuum chamber, and said axially movable thermally responsive valve seat modulating opening of said valve.
Claim 2
Dependent Claim
158 words
A temperature-modulated vacuum control valve comprising: a valve housing having, a vacuum input, a vacuum output, and a communicating vacuum chamber between said vacuum input and said vacuum output, a second vacuum input communicating with said housing, a valve chamber in said housing having communication with said second vacuum input and with said communicating vacuum chamber, a valve in said chamber having an annular valve element, a second vacuum chamber in said housing on the opposite side of said valve from said communicating vacuum chamber, a thermally responsive valve seat in said chamber movable axially along said chamber upon changes in temperature and forming a seat for said valve, and having a central passageway leading therethrough encircled by said annular valve element, said valve being opened by vacuum passing through said central passageway and annular valve element to supply vacuum to said communicating vacuum chamber, and said axially movable thermally responsive valve seat modulating opening of said valve.
Claim 3
Dependent Claim
34 words
The temperature-modulated vacuum control valve of claim 1, wherein the valve includes a diaphragm sealed to said valve chamber, and wherein the thermally responsive valve seat is a bimetal disk sealed to said chamber.
Claim 4
Dependent Claim
28 words
The temperature-modulated vacuum control valve of claim 2, wherein spring means bias said valve toward said seat, and wherein the thermally responsive valve seat is a bimetal disk.
Claim 5
Dependent Claim
22 words
The temperature-modulated vacuum control valve of claim 3, including means calibrating said spring means and preselecting the vacuum for opening said valve.
Claim 6
Dependent Claim
150 words
In a temperature-modulated deceleration valve and in combination with the vacuum motor particularly adapted to control the advance of the spark of an automobile vehicle, a valve housing, a vacuum intake leading from said valve housing and connected with a first source of vacuum, a vacuum output leading into said valve housing and connected with said vacuum motor, a vacuum chamber in said housing connecting said vacuum output with said vacuum input, a valve chamber in said valve housing having communication with said vacuum output, a second vacuum input leading from said valve chamber, vacuum-operated valve means in said valve chamber, opening by vacuum in said second vacuum input, and including a thermally responsive valve seat and a resilient valve engageable with said seat and opening in accordance with a predetermined vacuum in said second vacuum input, and in accordance with preselected engine temperatures when the automotive vehicle is idling.
Claim 7
Dependent Claim
150 words
In a temperature-modulated deceleration valve and in combination with the vacuum motor particularly adapted to control the advance of the spark of an automobile vehicle, a valve housing, a vacuum intake leading from said valve housing and connected with a first source of vacuum, a vacuum output leading into said valve housing and connected with said vacuum motor, a vacuum chamber in said housing connecting said vacuum output with said vacuum input, a valve chamber in said valve housing having communication with said vacuum output, a second vacuum input leading from said valve chamber, vacuum-operated valve means in said valve chamber, opening by vacuum in said second vacuum input, and including a thermally responsive valve seat and a resilient valve engageable with said seat and opening in accordance with a predetermined vacuum in said second vacuum input, and in accordance with preselected engine temperatures when the automotive vehicle is idling.
Claim 8
Dependent Claim
58 words
The temperature-modulated deceleration valve in accordance with claim 5, wherein the valve seat has a central passageway leading therethrough, and wherein the valve means includes an annular valve member engaging said valve seat along the outside of said central passageway and affording a passageway through said annular valve member to supply vacuum to effect opening of said valve.
Claim 9
Dependent Claim
35 words
The temperature-modulated deceleration valve in accordance with claim 6, wherein at least one other vacuum output is in communication with said second vacuum input through the registering passageways leading through said valve seat and valve.
Claim 10
Dependent Claim
62 words
The temperature-modulated vacuum control valve of claim 5, wherein the valve means includes a diaphragm and a central resilient valve extending therefrom engageable with said seat and having a central passageway leading therethrough, and wherein the thermally responsive valve seat is a bimetal disk having a port leading therethrough and registering with and encircled by said central passageway leading through resilient valve.
Claim 11
Dependent Claim
33 words
The temperature-modulated deceleration valve of claim 8, wherein spring means bias said valve into engagement with said valve seat to block the output vacuum to said vacuum motor through said second vacuum intake.
Claim 12
Dependent Claim
69 words
The temperature-modulated deceleration valve of claim 9, wherein said spring is a frustoconical spring, wherein a disk forms a seat for the large diameter end of said spring and the small diameter end of said spring is seated on said valve, and wherein calibrating means is provided to vary the position of said disk and the rate of said spring, to vary the vacuum required to open said valve.
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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) | 1974-10-11 | 1975-04-12 | 1975-10-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-10-11 | 1979-04-12 | 1979-10-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-10-11 | 1983-04-12 | 1983-10-12 | $7700.00 | Window Closed / Lapsed |