US4007625A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluidic oscillator assembly
Assignee: A Monforts Maschinenfabrik
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Filing: 1975-07-14
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Granted: 1977-02-15
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Expires: 1995-07-14
Abstract
Abstract A fluidic oscillator assembly including a fluidic oscillator having an inlet and two outlets, and a piezoelectric element for picking-up frequency oscillations induced in the fluid oscillator, the piezoelectric element being located at and closing one of the outlets of the fluidic oscillator.
Inventors
- 👤 Heinz Houben
- 👤 Manfred Pabst
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 14:33
CPC Classifications
F; F15; F15C; F15C1/00; F15C1/22; F15C1/005; G; G01; G01H; G01H3/00; G01H3/04; G01H3/06; Y; Y10; Y10T; Y10T137/00; Y10T137/206; Y10T137/2065
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
44 words
A fluidic oscillator assembly comprising a fluidic oscillator having an inlet and two outlets, and a piezoelectric element for detecting frequency of oscillations induced in said fluid oscillator, said piezoelectric element being located at and closing one of said outlets of said fluidic oscillator.
Claim 2
Dependent Claim
44 words
A fluidic oscillator assembly comprising a fluidic oscillator having an inlet and two outlets, and a piezoelectric element for detecting frequency of oscillations induced in said fluid oscillator, said piezoelectric element being located at and closing one of said outlets of said fluidic oscillator.
Claim 3
Dependent Claim
16 words
A fluidic oscillator assembly according to claim 1 wherein said piezoelectric element is a quartz crystal.
Claim 4
Dependent Claim
67 words
A fluidic oscillator assembly according to claim 1 for determining the mixing ratio of binary gases in a mixture thereof by measuring the velocity of sound in the gas mixture, said velocity being determined through the oscillating frequency of the fluidic oscillator, wherein said one outlet of the fluidic oscillator closed by said piezoelectric element extends out of a chamber in which the gas mixture is receivable.
Claim 5
Dependent Claim
21 words
A fluidic oscillator assembly according to claim 2 wherein said piezoelectric element is formed of ceramic material and is elastically mounted.
Claim 6
Dependent Claim
38 words
A fluidic oscillator assembly according to claim 1 including a preamplifier directly connected to said piezoelectric element in the immediate vicinity of said fluidic oscillator, and control means remote from said fluidic oscillator and connected to said preamplifier.
References Cited (Backward Citations)
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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) | 1980-02-15 | 1980-08-16 | 1981-02-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-02-15 | 1984-08-16 | 1985-02-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-02-15 | 1988-08-16 | 1989-02-15 | $7700.00 | Window Closed / Lapsed |