US3734117A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid diaphragm modulator
Assignee: Johnson Service Co
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Filing: 1970-11-18
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Granted: 1973-05-22
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Expires: 1990-11-18
Abstract
Abstract A pair of spaced and series connected nozzles terminate in a first coupling chamber with a flat spring-loaded diaphragm forming an outer wall. A second coupling chamber closes the spaces between the nozzles. The diaphragm is a common wall with an input chamber. A main fluid supply is connected to either the first coupling chamber or to the first nozzle and an output or a reference pressure means is correspondingly connected to the second coupling chamber. A supply to the nozzle establishes aspiration between the two nozzles with a resulting negative pressure level. A control input signal to the input chamber moves the spring-loaded diaphragm toward the second nozzle with an increased pressure in the second chamber. Alternatively, the output is connected with the supply to the first chamber and the nozzles and second chamber are connected to references to establish unit gain and provide a repeater.
Inventors
- 👤 L Atkinson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 16:12
CPC Classifications
F; F15; F15C; F15C3/00; F15C3/04; F15B; F15B5/00; F15B5/003; Y; Y10; Y10T; Y10T137/00; Y10T137/2278
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
216 words
A fluid diaphragm modulator comprising a chamber means including a diaphragm wall means common to a first coupling chamber and a signal chamber, an input signal means connected to said signal chamber for selectively positioning said diaphragm wall means, a first orifice means in said coupling chamber in aligned opposed relation to said diaphragm wall means, a second orifice means mounted in spaced aligned relation to said first orifice means outwardly of said coupling chamber, said first orifice means being larger than said second orifice means and being closely spaced whereby a stream emitted from said second orifice means and passing freely through said first orifice means aspirates fluid, a second coupling chamber means enclosing the space between said first and second orifice means, a pressurized fluid supply means connected to said second orifice means and a fluid reference means connected to said first coupling chamber whereby a continuous stream is established through said orifice means with said diaphragm spaced from said first orifice means, and a load means connected to said second coupling chamber for providing in response to said input signal an output signal at said second coupling chamber varying from an aspirating condition to said supply means pressure in accordance with the position of said diaphragm wall relative to said first orifice means.
Claim 2
Dependent Claim
216 words
A fluid diaphragm modulator comprising a chamber means including a diaphragm wall means common to a first coupling chamber and a signal chamber, an input signal means connected to said signal chamber for selectively positioning said diaphragm wall means, a first orifice means in said coupling chamber in aligned opposed relation to said diaphragm wall means, a second orifice means mounted in spaced aligned relation to said first orifice means outwardly of said coupling chamber, said first orifice means being larger than said second orifice means and being closely spaced whereby a stream emitted from said second orifice means and passing freely through said first orifice means aspirates fluid, a second coupling chamber means enclosing the space between said first and second orifice means, a pressurized fluid supply means connected to said second orifice means and a fluid reference means connected to said first coupling chamber whereby a continuous stream is established through said orifice means with said diaphragm spaced from said first orifice means, and a load means connected to said second coupling chamber for providing in response to said input signal an output signal at said second coupling chamber varying from an aspirating condition to said supply means pressure in accordance with the position of said diaphragm wall relative to said first orifice means.
Claim 3
Dependent Claim
14 words
The fluid diaphragm modulator of claim 1 wherein said orifice means are essentially coaxial.
Claim 4
Dependent Claim
86 words
The fluid diaphragm modulator of claim 1 wherein said diaphragm wall includes a flat diaphragm secured about the periphery within said chamber means in opposed relation to said first orifice means, a flat spring means overlying said diaphragm within said chamber and secured at the periphery, said spring means having a central portion movable linearly relative to the plane of said diaphragm, and said fluid signal chamber uniformly applying a pressure over the backside of the diaphragm to selectively move the spring means toward the orifice.
Claim 5
Dependent Claim
53 words
The fluid diaphragm modulator of claim 3 wherein said flat spring includes an outer ring portion and a central lid portion aligned with said first orifice means, and a plurality of equicircumferentially spaced arms connected between said ring portion and said lid portion, said arms permitting linear flatwise movement of said lid portion.
Claim 6
Dependent Claim
50 words
The fluid diaphragm modulator of claim 1, wherein said chambers are formed in stacked relation with a common wall between said coupling chambers, said first orifice being formed in said common wall, and said second orifice being formed in a wall of said second coupling chamber opposite said common wall.
Claim 7
Dependent Claim
75 words
The fluid diaphragm modulator of claim 1, wherein chamber means includes a plurality parallel spaced planar walls defining said chambers with a common wall between said coupling chambers, said first orifice means being formed by an offset nozzle in said common wall projecting into said first coupling chamber toward said diaphragm, and said second orifice means being formed by a similar offset nozzle in the wall of said second coupling chamber opposite said common wall.
Claim 8
Dependent Claim
92 words
The fluid diaphragm modulator of claim 6 wherein chambers are circular and said diaphragm wall means includes a flat disc flexible diaphragm clamped about the periphery within said chamber means to said chamber walls, said diaphragm wall means includes a flat spring means clamped at the periphery in overlying engagement with said diaphragm, said spring means having a central flat lid portion secured to an outer ring portion by a plurality of spaced arms, said arms extending radially and circumferentially of the lid and permitting linear flatwise movement of said lid portion.
Claim 9
Dependent Claim
39 words
The fluid diaphragm modulator of claim 7 wherein said arms include four circumferentially spaced arms, each of said arms being essentially L-shaped with one end secured to the lid portion and the opposite end secured to the ring portion.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-05-21 | 1976-11-20 | 1977-05-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-05-21 | 1980-11-20 | 1981-05-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-05-21 | 1984-11-20 | 1985-05-22 | $7700.00 | Window Closed / Lapsed |