FR2266874A1 - - Google Patents
Info
- Publication number
- FR2266874A1 FR2266874A1 FR7510648A FR7510648A FR2266874A1 FR 2266874 A1 FR2266874 A1 FR 2266874A1 FR 7510648 A FR7510648 A FR 7510648A FR 7510648 A FR7510648 A FR 7510648A FR 2266874 A1 FR2266874 A1 FR 2266874A1
- Authority
- FR
- France
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
- G01F23/22—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water
- G01F23/28—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring the variations of parameters of electromagnetic or acoustic waves applied directly to the liquid or fluent solid material
- G01F23/284—Electromagnetic waves
- G01F23/292—Light, e.g. infrared or ultraviolet
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Thermal Sciences (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
- Measuring Fluid Pressure (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US458867A US3908129A (en) | 1974-04-08 | 1974-04-08 | Manometer level detector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| FR2266874A1 true FR2266874A1 (enExample) | 1975-10-31 |
Family
ID=23822406
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR7510648A Withdrawn FR2266874A1 (enExample) | 1974-04-08 | 1975-04-04 |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US3908129A (enExample) |
| JP (1) | JPS50137565A (enExample) |
| AU (1) | AU7985575A (enExample) |
| BE (1) | BE827684A (enExample) |
| DE (1) | DE2515116A1 (enExample) |
| FR (1) | FR2266874A1 (enExample) |
| IT (1) | IT1034879B (enExample) |
Families Citing this family (28)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4012671A (en) * | 1975-10-14 | 1977-03-15 | Gulf & Western Industries, Inc. | Trigger circuit |
| CA1087274A (en) * | 1976-09-02 | 1980-10-07 | William F. Jacobsen | Pulsed level sensor |
| CA1087269A (en) * | 1976-09-03 | 1980-10-07 | William F. Jacobsen | Frequency sensitive level detecting apparatus |
| US4083255A (en) * | 1977-03-04 | 1978-04-11 | The United States Of America As Represented By The Secretary Of The Navy | Hydro-optic vibration detector |
| CH614044A5 (enExample) * | 1977-03-07 | 1979-10-31 | Benno Perren | |
| EP0003566A1 (de) * | 1978-02-03 | 1979-08-22 | Siemens Aktiengesellschaft | Füllstandsanzeiger |
| US4232528A (en) * | 1978-03-16 | 1980-11-11 | Emerson Electric Co. | Frost detector |
| US4214485A (en) * | 1978-06-07 | 1980-07-29 | Paul J. Berger | Electro-mechanical transducer |
| USRE31248E (en) * | 1978-06-07 | 1983-05-24 | Paul J. Berger | Electro-mechanical transducer |
| US4399711A (en) * | 1980-04-18 | 1983-08-23 | Beckman Instruments, Inc. | Method and apparatus ensuring full volume pickup in an automated pipette |
| US4342996A (en) * | 1980-10-29 | 1982-08-03 | Jannotta Louis J | Two disc encoder system for monitoring height of liquid in storage tank |
| US4481595A (en) * | 1981-06-19 | 1984-11-06 | Hans Schiessl | Method and apparatus for determining the fill level of containers |
| US4419903A (en) * | 1982-02-22 | 1983-12-13 | Beckman Instruments, Inc. | Method and apparatus for detecting insufficient liquid levels |
| DE3621009A1 (de) * | 1986-06-23 | 1988-01-07 | Truetzschler & Co | Vorrichtung zur erfassung des fuellstandes in einem fasermaterialspeicher, insbesondere fuer spinnereivorbereitungsmaschinen |
| JPH01169324A (ja) * | 1987-01-09 | 1989-07-04 | Sasabe Hirakazu | 液位検知装置 |
| US4899575A (en) * | 1988-07-29 | 1990-02-13 | Research Foundation Of State University Of New York | Method and apparatus for determining viscosity |
| US5138886A (en) * | 1990-09-27 | 1992-08-18 | Tilley Sr Hilton R | Electronic manometer |
| US5351036A (en) * | 1991-12-10 | 1994-09-27 | Clark-Reliance Corporation | Microwave-based point liquid level monitoring system |
| DE19713785A1 (de) * | 1997-04-03 | 1998-10-08 | Velhagen Karl Heinz Prof Dr | Verfahren zur Bestimmung eines vorgegebenen Flüssigkeitspegels |
| WO1999020983A2 (en) * | 1997-10-22 | 1999-04-29 | Argonaut Technologies, Inc. | Systems and methods using an optical sensor for liquid metering |
| US6687004B1 (en) | 1999-10-22 | 2004-02-03 | Marquette University | Optical sensor for opaque and non-opaque materials |
| US6446734B1 (en) | 1999-11-11 | 2002-09-10 | Black & Decker Inc. | Motor/handle housing and gear case mounting for portable power tool |
| GB2374152A (en) * | 2001-04-07 | 2002-10-09 | Halyard | Apparatus and method for detecting a change in fluid flow |
| DE202007018337U1 (de) | 2006-06-21 | 2008-06-26 | Bundesanstalt für Materialforschung und -Prüfung (BAM) | Überwachungsgerät für ein Meßgerät |
| US7788973B2 (en) * | 2007-01-19 | 2010-09-07 | Itt Manufacturing Enterprises, Inc. | Combined sight oil level gage and ultrasonic sensor |
| US9366560B2 (en) | 2013-08-01 | 2016-06-14 | John Cacciola | Detector for detecting a change in a fluid level and generating a digital signal |
| US10098809B2 (en) | 2014-06-05 | 2018-10-16 | Mercury Enterprises, Inc. | Manometer with cadence indicator |
| US9402781B2 (en) * | 2014-06-05 | 2016-08-02 | Mercury Enterprises, Inc. | Manometer with cadence indicator |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2984148A (en) * | 1958-11-13 | 1961-05-16 | Honeywell Regulator Co | Measuring apparatus |
| US3411005A (en) * | 1966-01-24 | 1968-11-12 | Automation Devices Inc | Compact infrared detector systems with regulated power supply |
| US3454759A (en) * | 1966-04-22 | 1969-07-08 | Industrial Dynamics Co | Infrared liquid level inspection system for a container which may contain foam above the liquid |
| US3636360A (en) * | 1968-05-13 | 1972-01-18 | Hitachi Ltd | Apparatus for detection of liquid level in transparent tube comprising photocell located to receive light which has been totally reflected |
-
1974
- 1974-04-08 US US458867A patent/US3908129A/en not_active Expired - Lifetime
-
1975
- 1975-04-04 AU AU79855/75A patent/AU7985575A/en not_active Expired
- 1975-04-04 FR FR7510648A patent/FR2266874A1/fr not_active Withdrawn
- 1975-04-07 DE DE19752515116 patent/DE2515116A1/de active Pending
- 1975-04-07 IT IT22050/75A patent/IT1034879B/it active
- 1975-04-08 BE BE155188A patent/BE827684A/xx unknown
- 1975-04-08 JP JP50041898A patent/JPS50137565A/ja active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| US3908129A (en) | 1975-09-23 |
| DE2515116A1 (de) | 1975-10-16 |
| BE827684A (fr) | 1975-07-31 |
| JPS50137565A (enExample) | 1975-10-31 |
| AU7985575A (en) | 1976-10-07 |
| IT1034879B (it) | 1979-10-10 |
Similar Documents
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| ST | Notification of lapse |