GB1390248A - Fluid pressure indicating devices - Google Patents
Fluid pressure indicating devicesInfo
- Publication number
- GB1390248A GB1390248A GB2496072A GB4322873A GB1390248A GB 1390248 A GB1390248 A GB 1390248A GB 2496072 A GB2496072 A GB 2496072A GB 4322873 A GB4322873 A GB 4322873A GB 1390248 A GB1390248 A GB 1390248A
- Authority
- GB
- United Kingdom
- Prior art keywords
- chamber
- indicators
- pressure
- circuit
- aperture
- Prior art date
- 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.)
- Expired
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L19/00—Details of, or accessories for, apparatus for measuring steady or quasi-steady pressure of a fluent medium insofar as such details or accessories are not special to particular types of pressure gauges
- G01L19/08—Means for indicating or recording, e.g. for remote indication
- G01L19/12—Alarms or signals
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measuring Fluid Pressure (AREA)
Abstract
1390248 Pressure indicators LEESONA CORP 14 Sept 1973 [15 Sept 1972] 43228/73 Heading G1L An indicator 12 for connection to a fluidpressure circuit, e.g. including a pneumaticallyoperable piston 42 and cylinder 40, to indicate the pressure therein comprises a chamber 22 communicating with the circuit and a body of compressible material 28 lying across the chamber, the material 28 having an aperture whose size varies as the material 28 is compressed according to the fluidpressure in the chamber 22, at least a part of the chamber wall, e.g. sheet 28, being transparent such that the portion of the material 28 around the aperture is visible from the outside to give an indication of the fluid-pressure. As shown in Fig. 1 a bank of such indicators 12a-12d may be provided each coupled to a different part of the circuit. The aperture in the material 28 of each indicator may take the form of crossed slits 36 and ports 38. Under pressure compression and deformation of the material 28 as depicted in the indicators 12b and 12d, exposes the interior 52 of chamber 22 which may be reflective or coloured as a visual aid. The compressible material 28 is preferably a closed cell elastomeric foam.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US00289578A US3834346A (en) | 1972-09-15 | 1972-09-15 | Fluid circuit indicator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1390248A true GB1390248A (en) | 1975-04-09 |
Family
ID=23112138
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2496072A Expired GB1390248A (en) | 1972-09-15 | 1973-09-14 | Fluid pressure indicating devices |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US3834346A (en) |
| JP (1) | JPS4988575A (en) |
| CA (1) | CA1003280A (en) |
| DE (1) | DE2345993A1 (en) |
| FR (1) | FR2200520B1 (en) |
| GB (1) | GB1390248A (en) |
| NL (1) | NL7312006A (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3896851A (en) * | 1974-01-28 | 1975-07-29 | Leesona Corp | Integrated modular fluid logic arrays displaying dynamic circuit operating conditions |
| US4166429A (en) * | 1977-09-14 | 1979-09-04 | Amerace Corporation | Fluid pressure indicator |
| US4166430A (en) * | 1977-09-14 | 1979-09-04 | Amerace Corporation | Fluid pressure indicator |
| JPS56116638U (en) * | 1980-02-07 | 1981-09-07 | ||
| US10054468B2 (en) * | 2016-08-15 | 2018-08-21 | Stress Indicators, Inc. | Chromaulic displacement transducer, method of manufacturing a chromaulic displacement transducer, and closed loop control system incorporating the same |
| CN107702870B (en) * | 2017-11-07 | 2019-12-17 | 苏州富强科技有限公司 | sealing performance detection method for sealing structure |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE917582C (en) * | 1944-02-22 | 1954-09-06 | Draegerwerk Ag | Display device |
| US2761411A (en) * | 1952-09-29 | 1956-09-04 | Bendix Aviat Corp | Pressure indicating device |
| US3203229A (en) * | 1962-06-28 | 1965-08-31 | Budd Co | Photoelastic leak detection methods |
| US3241514A (en) * | 1964-10-12 | 1966-03-22 | Geotechnical Corp | Pneumatic pressure indicator |
| US3318328A (en) * | 1965-05-26 | 1967-05-09 | Combustion Eng | Alarm system |
| US3372501A (en) * | 1966-02-23 | 1968-03-12 | George B. Greene | Pneumatic display sign |
| FR1566635A (en) * | 1968-03-26 | 1969-05-09 | ||
| US3492968A (en) * | 1968-07-08 | 1970-02-03 | Gardner Denver Co | Fluid actuated visual indicator |
| US3556044A (en) * | 1969-04-15 | 1971-01-19 | Robertshaw Controls Co | Indicating means |
| FR2079905A5 (en) * | 1970-02-17 | 1971-11-12 | Jouvenel & Cordier | |
| US3703879A (en) * | 1971-04-06 | 1972-11-28 | Charles K Huthsing Jr | Pressure indicator |
-
1972
- 1972-09-15 US US00289578A patent/US3834346A/en not_active Expired - Lifetime
-
1973
- 1973-08-28 JP JP48096540A patent/JPS4988575A/ja active Pending
- 1973-08-31 NL NL7312006A patent/NL7312006A/xx not_active Application Discontinuation
- 1973-09-05 CA CA180,338A patent/CA1003280A/en not_active Expired
- 1973-09-12 DE DE19732345993 patent/DE2345993A1/en active Pending
- 1973-09-14 GB GB2496072A patent/GB1390248A/en not_active Expired
- 1973-09-14 FR FR7333170A patent/FR2200520B1/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| DE2345993A1 (en) | 1974-03-21 |
| NL7312006A (en) | 1974-03-19 |
| US3834346A (en) | 1974-09-10 |
| JPS4988575A (en) | 1974-08-23 |
| FR2200520B1 (en) | 1978-12-08 |
| CA1003280A (en) | 1977-01-11 |
| FR2200520A1 (en) | 1974-04-19 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed [section 19, patents act 1949] | ||
| PCNP | Patent ceased through non-payment of renewal fee |