GB2000293A - Device for displaying fluctuations in the speed of a boat - Google Patents
Device for displaying fluctuations in the speed of a boatInfo
- Publication number
- GB2000293A GB2000293A GB7826407A GB7826407A GB2000293A GB 2000293 A GB2000293 A GB 2000293A GB 7826407 A GB7826407 A GB 7826407A GB 7826407 A GB7826407 A GB 7826407A GB 2000293 A GB2000293 A GB 2000293A
- Authority
- GB
- United Kingdom
- Prior art keywords
- speed
- boat
- fluctuations
- comparator
- store
- 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.)
- Granted
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P5/00—Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft
- G01P5/24—Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft by measuring the direct influence of the streaming fluid on the properties of a detecting acoustical wave
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D3/00—Indicating or recording apparatus with provision for the special purposes referred to in the subgroups
- G01D3/06—Indicating or recording apparatus with provision for the special purposes referred to in the subgroups with provision for operation by a null method
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
- Aviation & Aerospace Engineering (AREA)
- Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
- Control Of Electric Motors In General (AREA)
- Indication And Recording Devices For Special Purposes And Tariff Metering Devices (AREA)
- Indicating Measured Values (AREA)
Abstract
A device for displaying fluctuations from a desired value of the speed of a boat, particularly small fluctuations which are difficult to read-off with known devices. The device has a store 3 for storing an electrical signal representing the desired speed; a comparator 2 for comparing the stored desired speed with the actual speed of the boat; and an instrument 1 connected to the output of the comparator which displays any fluctuation from the desired speed. The store may be a capacitor or, as shown, a counter 3 fed by a frequency generator 5 controlled by a bistable circuit 6. <IMAGE>
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2726103A DE2726103C2 (en) | 1977-06-10 | 1977-06-10 | Device for displaying the change in speed of a ship |
Publications (2)
Publication Number | Publication Date |
---|---|
GB2000293A true GB2000293A (en) | 1979-01-04 |
GB2000293B GB2000293B (en) | 1982-04-28 |
Family
ID=6011131
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB7826407A Expired GB2000293B (en) | 1977-06-10 | 1978-06-06 | Device for displaying fluctuations in the speed of a boat |
Country Status (5)
Country | Link |
---|---|
AU (1) | AU517616B2 (en) |
DE (1) | DE2726103C2 (en) |
FR (1) | FR2394061A1 (en) |
GB (1) | GB2000293B (en) |
SE (1) | SE433670B (en) |
Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB699036A (en) * | 1951-04-24 | 1953-10-28 | Gen Electric Co Ltd | Improvements in or relating to apparatus for measuring the frequency of alternating currents or speed |
GB1212264A (en) * | 1968-04-11 | 1970-11-11 | Int Computers Ltd | Improvements in or relating to speed indicating apparatus for electric motors |
GB1250311A (en) * | 1968-01-17 | 1971-10-20 | ||
GB1299185A (en) * | 1968-12-23 | 1972-12-06 | Rudolph Matthews Sen Mcclellan | A vehicle-incorporating speed indicating apparatus |
GB1427187A (en) * | 1973-07-09 | 1976-03-10 | Simmonds Precision Products | Rotational speed transducers |
GB1447635A (en) * | 1973-05-25 | 1976-08-25 | Honeywell Ltd | Setting means for character display unit |
GB1448487A (en) * | 1972-11-17 | 1976-09-08 | Cem Comp Electro Mec | Detecting presence or absence of metal |
GB1464322A (en) * | 1974-06-03 | 1977-02-09 | Towmotor Corp | Liift truck speed-indicating system |
GB1474110A (en) * | 1973-05-08 | 1977-05-18 | Schlumberger Compteurs | Apparatus for setting a counter to a given initial count |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3587725A (en) * | 1968-10-16 | 1971-06-28 | Hughes Aircraft Co | Heat pipe having a substantially unidirectional thermal path |
US3613774A (en) * | 1969-10-08 | 1971-10-19 | Sanders Associates Inc | Unilateral heat transfer apparatus |
US3700028A (en) * | 1970-12-10 | 1972-10-24 | Noren Products Inc | Heat pipes |
US3754594A (en) * | 1972-01-24 | 1973-08-28 | Sanders Associates Inc | Unilateral heat transfer apparatus |
DE2214740A1 (en) * | 1972-03-25 | 1973-09-27 | Inst Fuer Kerntechnik & Energ | Heat conducting device the difference in capillary action provides - unidirectional operat ion |
US3884292A (en) * | 1973-06-22 | 1975-05-20 | Isothermics | Air-o-space heater means for recovering heat from a fluid steam |
IT1015409B (en) * | 1973-08-14 | 1977-05-10 | Jermyn T | PERFECTED DEVICE FOR HEAT CONDUCTIVE |
GB1484183A (en) * | 1974-10-24 | 1977-09-01 | Shell Int Research | Method as well as a system for determining the movement of a ship |
US4057963A (en) * | 1976-03-11 | 1977-11-15 | Hughes Aircraft Company | Heat pipe capable of operating against gravity and structures utilizing same |
-
1977
- 1977-06-10 DE DE2726103A patent/DE2726103C2/en not_active Expired
-
1978
- 1978-06-01 AU AU36806/78A patent/AU517616B2/en not_active Expired
- 1978-06-05 SE SE7806580A patent/SE433670B/en not_active IP Right Cessation
- 1978-06-06 GB GB7826407A patent/GB2000293B/en not_active Expired
- 1978-06-09 FR FR787817390A patent/FR2394061A1/en active Granted
Patent Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB699036A (en) * | 1951-04-24 | 1953-10-28 | Gen Electric Co Ltd | Improvements in or relating to apparatus for measuring the frequency of alternating currents or speed |
GB1250311A (en) * | 1968-01-17 | 1971-10-20 | ||
GB1212264A (en) * | 1968-04-11 | 1970-11-11 | Int Computers Ltd | Improvements in or relating to speed indicating apparatus for electric motors |
GB1299185A (en) * | 1968-12-23 | 1972-12-06 | Rudolph Matthews Sen Mcclellan | A vehicle-incorporating speed indicating apparatus |
GB1448487A (en) * | 1972-11-17 | 1976-09-08 | Cem Comp Electro Mec | Detecting presence or absence of metal |
GB1474110A (en) * | 1973-05-08 | 1977-05-18 | Schlumberger Compteurs | Apparatus for setting a counter to a given initial count |
GB1447635A (en) * | 1973-05-25 | 1976-08-25 | Honeywell Ltd | Setting means for character display unit |
GB1427187A (en) * | 1973-07-09 | 1976-03-10 | Simmonds Precision Products | Rotational speed transducers |
GB1464322A (en) * | 1974-06-03 | 1977-02-09 | Towmotor Corp | Liift truck speed-indicating system |
Also Published As
Publication number | Publication date |
---|---|
SE433670B (en) | 1984-06-04 |
GB2000293B (en) | 1982-04-28 |
FR2394061B3 (en) | 1981-01-16 |
SE7806580L (en) | 1978-12-11 |
AU3680678A (en) | 1979-12-06 |
DE2726103A1 (en) | 1978-12-21 |
DE2726103C2 (en) | 1984-11-29 |
AU517616B2 (en) | 1981-08-13 |
FR2394061A1 (en) | 1979-01-05 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PCNP | Patent ceased through non-payment of renewal fee |