US3763464A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressure transducer device
Assignee: INST DU PETROLE CARBURANTS LUB
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Filing: 1972-01-11
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Granted: 1973-10-02
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Expires: 1992-01-11
Abstract
Abstract Pressure transducer device comprising two flexible plates close to and facing each other and at least one pressure transducer element fastened to a plate on the side thereof opposite to the side facing the other plate, wherein at least one of the plates is provided with a rigid peripheral reinforced portion of a greater thickness than the central portion thereof, comprising a flat base against which the second plate is pressed, and wherein both plates are held in their relative positions by means of a tight acoustically transparent coating.
Inventors
- 👤 J Laurent
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 03:25
CPC Classifications
B; B06; B06B; B06B1/00; B06B1/02; B06B1/06; B06B1/0644; B06B1/0662; B06B1/0677; G; G01; G01L; G01L23/00; G01L23/08; G01L23/10; G01L9/00; G01L9/08
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
101 words
A pressure transducer device comprising two plates close to and facing each other, said plates having a central flexible portion, a pressure transducer element fastened to the central portion of at least one plate on the side thereof opposite to the side facing the other plate, the plate supporting the transducer element being provided with rigid peripheral reinforced portion of a greater thickness than the central portion thereof, and comprising a flat base against which the second plate is pressed, and a tight acoustically transparent coating for holding both plates in their relative positions and for insulating the pressure transducer device.
Claim 2
Dependent Claim
101 words
A pressure transducer device comprising two plates close to and facing each other, said plates having a central flexible portion, a pressure transducer element fastened to the central portion of at least one plate on the side thereof opposite to the side facing the other plate, the plate supporting the transducer element being provided with rigid peripheral reinforced portion of a greater thickness than the central portion thereof, and comprising a flat base against which the second plate is pressed, and a tight acoustically transparent coating for holding both plates in their relative positions and for insulating the pressure transducer device.
Claim 3
Dependent Claim
25 words
A pressure transducer device according to claim 1, in which the two plates comprise reinforced peripheral portions whose flat bases are pressed against each other.
Claim 4
Dependent Claim
52 words
A pressure transducer device according to claim 1, wherein the spacing of the plates is such that the maximum flexion thereof, when their central portions are pressed against each other by the effect of the applied pressure, is lower than the flexion which would result in an irreversible deformation of said plates.
Claim 5
Dependent Claim
16 words
A pressure transducer according to claim 1, wherein said two plates are formed entirely of metal.
Claim 6
Dependent Claim
21 words
A pressure transducer according to claim 1, wherein said two plates are formed partially of metal and partially of plastic material.
Claim 7
Dependent Claim
52 words
A pressure transducer according to claim 1, wherein the central flexible portions of said two plates are spaced from one another at a distance whereby said central flexible portions come into contact with one another at a predetermined pressure such that the maximum elastic distortion of the central portionS will be reversible.
Claim 8
Dependent Claim
31 words
A pressure transducer according to claim 1, wherein a pressure transducer element is secured to the central portion of each plate on the side opposite the side facing the other plate.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-10-01 | 1977-04-02 | 1977-10-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-01 | 1981-04-02 | 1981-10-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-01 | 1985-04-02 | 1985-10-02 | $7700.00 | Window Closed / Lapsed |