GB1234096A - - Google Patents
Info
- Publication number
- GB1234096A GB1234096A GB1234096DA GB1234096A GB 1234096 A GB1234096 A GB 1234096A GB 1234096D A GB1234096D A GB 1234096DA GB 1234096 A GB1234096 A GB 1234096A
- Authority
- GB
- United Kingdom
- Prior art keywords
- speed
- threshold
- circuit
- fail
- frequency
- 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
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P1/00—Details of instruments
- G01P1/07—Indicating devices, e.g. for remote indication
- G01P1/08—Arrangements of scales, pointers, lamps or acoustic indicators, e.g. in automobile speedometers
- G01P1/10—Arrangements of scales, pointers, lamps or acoustic indicators, e.g. in automobile speedometers for indicating predetermined speeds
- G01P1/103—Arrangements of scales, pointers, lamps or acoustic indicators, e.g. in automobile speedometers for indicating predetermined speeds by comparing the value of the measured signal with one or several reference values
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B9/00—Safety arrangements
- G05B9/02—Safety arrangements electric
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Amplifiers (AREA)
- Valves And Accessory Devices For Braking Systems (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US66011867A | 1967-08-11 | 1967-08-11 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1234096A true GB1234096A (US20110009641A1-20110113-C00116.png) | 1971-06-03 |
Family
ID=24648215
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1234096D Expired GB1234096A (US20110009641A1-20110113-C00116.png) | 1967-08-11 | 1968-07-31 |
Country Status (3)
Country | Link |
---|---|
US (1) | US3527986A (US20110009641A1-20110113-C00116.png) |
FR (1) | FR1581192A (US20110009641A1-20110113-C00116.png) |
GB (1) | GB1234096A (US20110009641A1-20110113-C00116.png) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2136233A (en) * | 1983-02-28 | 1984-09-12 | Westinghouse Electric Corp | Circuit for sensing the status of a voltage input over a wide range of voltage levels and waveforms |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3640586A (en) * | 1970-03-09 | 1972-02-08 | Abex Corp | Tachometer amplifier |
US3614466A (en) * | 1970-05-22 | 1971-10-19 | Westinghouse Air Brake Co | Fail-safe level detector with 50{13 50 duty cycle |
US3731193A (en) * | 1971-02-16 | 1973-05-01 | Westinghouse Air Brake Co | Vital vehicle brake assuring circuit arrangement |
US3714538A (en) * | 1971-09-13 | 1973-01-30 | Cincinnati Milacron Inc | Velocimeter |
US3832599A (en) * | 1973-08-15 | 1974-08-27 | Westinghouse Air Brake Co | Vital more restrictive speed command sensing circuit |
US20090043435A1 (en) * | 2007-08-07 | 2009-02-12 | Quantum Engineering, Inc. | Methods and systems for making a gps signal vital |
US8509970B2 (en) | 2009-06-30 | 2013-08-13 | Invensys Rail Corporation | Vital speed profile to control a train moving along a track |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1190095C2 (de) * | 1961-12-13 | 1973-04-05 | Agie A G Fuer Ind Elektronik L | Statischer frequenzumformer |
US3253188A (en) * | 1962-05-28 | 1966-05-24 | Urban L Nissel | Control circuit |
US3214640A (en) * | 1965-01-14 | 1965-10-26 | Grace W R & Co | Power fluctuation protection apparatus |
-
1967
- 1967-08-11 US US660118A patent/US3527986A/en not_active Expired - Lifetime
-
1968
- 1968-07-31 GB GB1234096D patent/GB1234096A/en not_active Expired
- 1968-08-06 FR FR1581192D patent/FR1581192A/fr not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2136233A (en) * | 1983-02-28 | 1984-09-12 | Westinghouse Electric Corp | Circuit for sensing the status of a voltage input over a wide range of voltage levels and waveforms |
Also Published As
Publication number | Publication date |
---|---|
FR1581192A (US20110009641A1-20110113-C00116.png) | 1969-09-12 |
US3527986A (en) | 1970-09-08 |
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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 |