Patent US3570823A successfully refreshed from Google Patents.
US3570823A
Expired / Lapsed
US
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Carburetor with fluid amplifying elements
Assignee: Aisan Industry Co Ltd
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Filing: 1969-07-10
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Granted: 1971-03-16
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Expires: 1989-07-10
Abstract
Abstract A carburetor employing three pure fluid amplifiers. Fuel from a supply source is applied to the power inputs of a first and a second amplifier, with a power outlet of the second amplifier being connected to the power inlet of the third amplifier. One power outlet of each amplifier terminates at an opening in a cylinder wall upstream of a throttle valve for supplying fuel to the cylinder. One control input of each amplifier terminates at an opening in the cylinder wall for sensing the pressure therein and controlling the amplifiers to supply fuel at a rate dependent upon the pressure sensed. The arrangement is such that one, two or all three amplifiers may supply fuel to the cylinder.
Inventors
- 👤 Toshinori Arikawa
- 👤 Shigetaka Takada
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 18:05
CPC Classifications
F; F02; F02M; F02M7/00; F02M7/10; F02M7/106; Y; Y10; Y10S; Y10S261/00; Y10S261/69; Y10T; Y10T137/00; Y10T137/206; Y10T137/2065; Y10T137/2071; Y10T137/212; Y10T137/2125; Y10T137/2142
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
193 words
A carburetor for controlling the flow of fuel to a cylinder bore, said carburetor comprising: a throttle valve in said bore; a plurality of fluid-amplifying means each having a power input, first and second control inputs, and first and second power outputs to which fuel supplied to said power input may be selectively directed in response to signals at said control inputs; each of said fluid-amplifying means having an internal configuration such that a control signal of a different magnitude is required at said first control inputs in order to direct fuel from said first to said second power output; means for conveying fuel from one of said power outputs of each amplifier to said cylinder bore; means for conveying to said first control inputs the pressure in said bore; switch means for selectively blocking said second control input of one of said fluid-amplifying means, or connecting it to the atmosphere; means interlocking said switch with said throttle valve whereby said switch means connects said second control input to atmosphere when said throttle valve is opened; and means connecting said second control input of each of the other fluid-amplifying means to the atmosphere.
Claim 2
Dependent Claim
193 words
A carburetor for controlling the flow of fuel to a cylinder bore, said carburetor comprising: a throttle valve in said bore; a plurality of fluid-amplifying means each having a power input, first and second control inputs, and first and second power outputs to which fuel supplied to said power input may be selectively directed in response to signals at said control inputs; each of said fluid-amplifying means having an internal configuration such that a control signal of a different magnitude is required at said first control inputs in order to direct fuel from said first to said second power output; means for conveying fuel from one of said power outputs of each amplifier to said cylinder bore; means for conveying to said first control inputs the pressure in said bore; switch means for selectively blocking said second control input of one of said fluid-amplifying means, or connecting it to the atmosphere; means interlocking said switch with said throttle valve whereby said switch means connects said second control input to atmosphere when said throttle valve is opened; and means connecting said second control input of each of the other fluid-amplifying means to the atmosphere.
Claim 3
Dependent Claim
27 words
A carburetor as claimed in claim 1 wherein said means for conveying fluid pressure comprises fluid passage means communicating with said bore upstream of said throttle valve.
Claim 4
Dependent Claim
200 words
A carburetor for controlling the flow of fuel to a cylinder bore, said carburetor comprising: a throttle valve; a plurality of fluid-amplifying means each having a power input, first and second control inputs, and first and second power outputs to which fuel supplied to said power input may be selectively directed in response to signals at said control inputs; each of said fluid-amplifying means having an internal configuration such that a control signal of a different magnitude is required at said first control inputs in order to direct fuel from said first to said second power output; means for conveying fuel from one of said power outputs of each amplifier to said cylinder bore; means for conveying to said first control inputs the pressure in said bore; pressure-responsive switch means for selectively blocking said second control input of one of said fluid-amplifying means, or connecting it to the atmosphere; a fluid passage connected to said switch means and terminating at an opening in said bore downstream from said throttle valve for operating said switch in response to a negative pressure of predetermined value; and means connecting said second control input of each of the other fluid-amplifying means to the atmosphere.
Claim 5
Dependent Claim
200 words
A carburetor for controlling the flow of fuel to a cylinder bore, said carburetor comprising: a throttle valve; a plurality of fluid-amplifying means each having a power input, first and second control inputs, and first and second power outputs to which fuel supplied to said power input may be selectively directed in response to signals at said control inputs; each of said fluid-amplifying means having an internal configuration such that a control signal of a different magnitude is required at said first control inputs in order to direct fuel from said first to said second power output; means for conveying fuel from one of said power outputs of each amplifier to said cylinder bore; means for conveying to said first control inputs the pressure in said bore; pressure-responsive switch means for selectively blocking said second control input of one of said fluid-amplifying means, or connecting it to the atmosphere; a fluid passage connected to said switch means and terminating at an opening in said bore downstream from said throttle valve for operating said switch in response to a negative pressure of predetermined value; and means connecting said second control input of each of the other fluid-amplifying means to the atmosphere.
Claim 6
Dependent Claim
27 words
A carburetor as claimed in claim 3 wherein said means for conveying fluid pressure comprises fluid passage means communicating with said bore upstream of said throttle 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) | 1974-03-15 | 1974-09-14 | 1975-03-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-03-15 | 1978-09-14 | 1979-03-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-03-15 | 1982-09-14 | 1983-03-16 | $7700.00 | Window Closed / Lapsed |