Patent US956286A successfully refreshed from Google Patents.
Patent US3719952A successfully refreshed from Google Patents.
US3719952A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flueric readout system
Assignee: United States Department of the Army
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Filing: 1971-03-04
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Granted: 1973-03-06
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Expires: 1991-03-04
Abstract
Abstract A flueric readout system is disclosed in which a visual permanent record, as a function of time, is obtained of the output of a fluid amplifier without the use of moving parts or electromechanical transducers. A supply of marking medium capable of imparting impressions upon a recording surface is combined with a fluid amplifier of the proportional or digital type such that the flow of fluid in at least one output channel of the fluid amplifier causes the flow of the marking medium onto the recording surface. The recording surface is typically in the form of a paper chart recorder which travels at a predetermined rate. In one embodiment the flow of marking medium is accomplished by extending a passage from a supply of marking medium into at least one output channel of the amplifier at such an angle that the marking medium is drawn into the output channel and deposited on the moving recorder. In a second embodiment, the marking medium is supplied directly to the power nozzle of a secondary fluid amplifier and the action of the primary fluid amplifier causes the marking medium in the secondary fluid amplifier to switch from one or the other of two output channels. One of the output channels extends onto the recorder while the other output channel returns unused marking medium to its reservoir. In a third embodiment, both output channels of the secondary amplifier direct the marking medium onto the recorder so as to obtain simultaneous comparison of both channels.
Inventors
- 👤 S Elbaum
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 12:50
CPC Classifications
F; F15; F15C; F15C1/00; F15C1/001; Y; Y10; Y10T; Y10T137/00; Y10T137/206; Y10T137/212; Y10T137/2125; Y10T137/2147
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
220 words
A system for producing a visual, permanent record as a function of time of the output of a proportional primary fluid amplifier comprising: a. a primary proportional fluid amplifier having a power nozzle for issuing a fluid, an interaction region, a pair of output channels and at least one control channel; b. a supply of liquid marking medium capable of imparting impressions upon a suitable recording surface; c. a secondary proportional fluid amplifier having a power nozzle, an interaction region, a pair of output channels and at least one control channel, said last-named power nozzle being supplied with said liquid marking medium, said secondary fluid amplifier being connected to at least one of said output channels of said primary fluid amplifier for causing a modulated flow of said liquid marking medium in response to the flow of fluid within said output channel of said primary fluid amplifier; d. a moving recording surface for receiving and retaining modulated impressions caused by the modulated flow of said marking medium from one of said output channels of said secondary fluid amplifier; and e. means for causing said surface to traverse at a predetermined rate; whereby the shapes of said modulated impressions are indications as a function of time of the fluid flow conditions within said output channel of said primary proportional fluid amplifier.
Claim 2
Independent Claim
220 words
A system for producing a visual, permanent record as a function of time of the output of a proportional primary fluid amplifier comprising: a. a primary proportional fluid amplifier having a power nozzle for issuing a fluid, an interaction region, a pair of output channels and at least one control channel; b. a supply of liquid marking medium capable of imparting impressions upon a suitable recording surface; c. a secondary proportional fluid amplifier having a power nozzle, an interaction region, a pair of output channels and at least one control channel, said last-named power nozzle being supplied with said liquid marking medium, said secondary fluid amplifier being connected to at least one of said output channels of said primary fluid amplifier for causing a modulated flow of said liquid marking medium in response to the flow of fluid within said output channel of said primary fluid amplifier; d. a moving recording surface for receiving and retaining modulated impressions caused by the modulated flow of said marking medium from one of said output channels of said secondary fluid amplifier; and e. means for causing said surface to traverse at a predetermined rate; whereby the shapes of said modulated impressions are indications as a function of time of the fluid flow conditions within said output channel of said primary proportional fluid amplifier.
Claim 3
Independent Claim
220 words
A system for producing a visual, permanent record as a function of time of the output of a proportional primary fluid amplifier comprising: a. a primary proportional fluid amplifier having a power nozzle for issuing a fluid, an interaction region, a pair of output channels and at least one control channel; b. a supply of liquid marking medium capable of imparting impressions upon a suitable recording surface; c. a secondary proportional fluid amplifier having a power nozzle, an interaction region, a pair of output channels and at least one control channel, said last-named power nozzle being supplied with said liquid marking medium, said secondary fluid amplifier being connected to at least one of said output channels of said primary fluid amplifier for causing a modulated flow of said liquid marking medium in response to the flow of fluid within said output channel of said primary fluid amplifier; d. a moving recording surface for receiving and retaining modulated impressions caused by the modulated flow of said marking medium from one of said output channels of said secondary fluid amplifier; and e. means for causing said surface to traverse at a predetermined rate; whereby the shapes of said modulated impressions are indications as a function of time of the fluid flow conditions within said output channel of said primary proportional fluid amplifier.
Claim 4
Independent Claim
220 words
A system for producing a visual, permanent record as a function of time of the output of a proportional primary fluid amplifier comprising: a. a primary proportional fluid amplifier having a power nozzle for issuing a fluid, an interaction region, a pair of output channels and at least one control channel; b. a supply of liquid marking medium capable of imparting impressions upon a suitable recording surface; c. a secondary proportional fluid amplifier having a power nozzle, an interaction region, a pair of output channels and at least one control channel, said last-named power nozzle being supplied with said liquid marking medium, said secondary fluid amplifier being connected to at least one of said output channels of said primary fluid amplifier for causing a modulated flow of said liquid marking medium in response to the flow of fluid within said output channel of said primary fluid amplifier; d. a moving recording surface for receiving and retaining modulated impressions caused by the modulated flow of said marking medium from one of said output channels of said secondary fluid amplifier; and e. means for causing said surface to traverse at a predetermined rate; whereby the shapes of said modulated impressions are indications as a function of time of the fluid flow conditions within said output channel of said primary proportional fluid amplifier.
Claim 5
Dependent Claim
26 words
The readout system of claim 1 further comprising a plurality of primary fluid amplifiers and secondary fluid amplifiers connected to each of said primary fluid amplifiers.
Claim 6
Dependent Claim
86 words
The readout system of claim 1 wherein said secondary fluid amplifier further comprises a first output channel for receiving and transmitting said marking medium onto said surface, a second output channel output channel for receiving and transmitting said marking medium to a reservoir and at least one control channel in fluid communication with said primary fluid amplifier, whereby the flow of fluid in the output of said primary fluid amplifier causes marking medium to be directed to the first output channel of said secondary fluid amplifier.
Claim 7
Dependent Claim
28 words
The readout system of claim 3 wherein the absence of a control signal to said secondary fluid amplifier causes said marking medium to be directed to said reservoir.
Claim 8
Dependent Claim
78 words
The readout system of claim 1 wherein said secondary fluid amplifier further comprises first and second output channels for receiving and transmitting said marking medium onto said surface and first and second control channels each in fluid communication with one of said pair of output channels of said primary fluid amplifier, whereby the flow of fluid in the outputs of said primary fluid amplifier provides proportional control for the flow of marking medium in said secondary fluid amplifier.
Claim 9
Dependent Claim
15 words
The readout system of claim 3 wherein said reservoir is said supply of marking medium.
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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) | 1976-03-05 | 1976-09-04 | 1977-03-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-03-05 | 1980-09-04 | 1981-03-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-03-05 | 1984-09-04 | 1985-03-06 | $7700.00 | Window Closed / Lapsed |