US4077257A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Depth Gauge
Assignee: FINANCIER ET INDUSTRIEL INTERSUB Ets
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Filing: 1977-03-04
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Granted: 1978-03-07
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Expires: 1997-03-04
Abstract
Abstract A depth gauge from which lesser depths can be read off accurately on a scale which is expanded in the lower range. The expanded scale is achieved in that the component exposed to the pressure of the water is composed of at least two subcomponents, such as diaphragms or Bourdon tubes, which are subjected in succession to the effect of the water pressure.
Inventors
- 👤 Karl Leemann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 10:26
CPC Classifications
G; G01; G01C; G01C5/00; G01C5/06; G01L; G01L7/00; G01L7/02; G01L7/04; G01L7/043; G01L7/08; G01L7/084; B; B63; B63C; B63C11/00; B63C11/02
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
95 words
In a depth gauge of the type wherein a component deformable under the effect of water pressure is connected to transmission means for transmitting the extent of said deformation to an indicator device, the improvement comprising a said deformable component composed of at least two subcomponents, the first of said subcomponents starting deformation at a first pressure and a second of said subcomponents starting deformation at a second pressure which is greater than said first pressure, said subcomponents being linked together to provide a composite deformation which varies non-linearly with variation in said water pressure.
Claim 2
Dependent Claim
95 words
In a depth gauge of the type wherein a component deformable under the effect of water pressure is connected to transmission means for transmitting the extent of said deformation to an indicator device, the improvement comprising a said deformable component composed of at least two subcomponents, the first of said subcomponents starting deformation at a first pressure and a second of said subcomponents starting deformation at a second pressure which is greater than said first pressure, said subcomponents being linked together to provide a composite deformation which varies non-linearly with variation in said water pressure.
Claim 3
Dependent Claim
11 words
The depth gauge of claim 1, wherein said subcomponents are diaphragms.
Claim 4
Dependent Claim
20 words
The depth gauge of claim 1, further comprising means operatable from outside said depth gauge for adjusting said indicator device.
Claim 5
Dependent Claim
12 words
The depth gauge of claim 1, wherein said subcomponents are Bourdon tubes.
Claim 6
Dependent Claim
22 words
The depth gauge of claim 4, further comprising sliding means disposed on at least one of facing sides of said Bourdon tubes.
Claim 7
Dependent Claim
15 words
The depth gauge of claim 5, wherein said sliding means are outwardly projecting plastic parts.
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) | 1981-03-06 | 1981-09-05 | 1982-03-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-03-06 | 1985-09-05 | 1986-03-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-03-06 | 1989-09-05 | 1990-03-07 | $7700.00 | Window Closed / Lapsed |