NL81953C - - Google Patents
Info
- Publication number
- NL81953C NL81953C NL81953DA NL81953C NL 81953 C NL81953 C NL 81953C NL 81953D A NL81953D A NL 81953DA NL 81953 C NL81953 C NL 81953C
- Authority
- NL
- Netherlands
Links
Classifications
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D3/00—Control of position or direction
- G05D3/12—Control of position or direction using feedback
- G05D3/14—Control of position or direction using feedback using an analogue comparing device
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S3/00—Direction-finders for determining the direction from which infrasonic, sonic, ultrasonic, or electromagnetic waves, or particle emission, not having a directional significance, are being received
- G01S3/02—Direction-finders for determining the direction from which infrasonic, sonic, ultrasonic, or electromagnetic waves, or particle emission, not having a directional significance, are being received using radio waves
- G01S3/14—Systems for determining direction or deviation from predetermined direction
- G01S3/38—Systems for determining direction or deviation from predetermined direction using adjustment of real or effective orientation of directivity characteristic of an antenna or an antenna system to give a desired condition of signal derived from that antenna or antenna system, e.g. to give a maximum or minimum signal
- G01S3/42—Systems for determining direction or deviation from predetermined direction using adjustment of real or effective orientation of directivity characteristic of an antenna or an antenna system to give a desired condition of signal derived from that antenna or antenna system, e.g. to give a maximum or minimum signal the desired condition being maintained automatically
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Control Of Multiple Motors (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1603845A GB594039A (en) | 1945-06-22 | Improvements in and relating to automatic position control means, more especially for adjustable aerial systems such as rotatable aerials for automatic radio direction fi nding equipment |
Publications (1)
Publication Number | Publication Date |
---|---|
NL81953C true NL81953C (de) |
Family
ID=10070013
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
NL81953D NL81953C (de) | 1945-06-22 |
Country Status (2)
Country | Link |
---|---|
US (1) | US2487429A (de) |
NL (1) | NL81953C (de) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2806191A (en) * | 1948-11-02 | 1957-09-10 | Pollopas Patents Ltd | Electric motor driving arrangement |
NL85953C (de) * | 1951-11-08 | |||
US2726544A (en) * | 1952-08-15 | 1955-12-13 | Bendix Aviat Corp | Rate of change indicator |
DE1066299B (de) * | 1957-08-22 | 1959-10-01 | Rockweld Ltd. und David James Wilson Boag, Croydon, Surrey (Großbritannien) | Elektroden-Vorschub-Regelanordnung mit zwei Motoren und Differentialgetriebe |
FR3033870B1 (fr) * | 2015-03-18 | 2018-08-31 | Carrier Corporation | Panneau pour une centrale de traitement d'air, methode d'assemblage d'un tel panneau et centrale de traitement d'air comprenant un tel panneau |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1703317A (en) * | 1925-04-08 | 1929-02-26 | Minorsky Nicolai | Automatic steering device |
US1669107A (en) * | 1927-05-09 | 1928-05-08 | Gen Electric | Automatic controller |
US1975023A (en) * | 1932-10-27 | 1934-09-25 | Paul Duclos Ets | Remote control device |
FR832512A (fr) * | 1937-05-13 | 1938-09-28 | Ind Radioelectriques Sa Des | Radio compas automatique perfectionné |
US2257757A (en) * | 1937-10-22 | 1941-10-07 | Sperry Gyroscope Co Inc | Radio compass navigation apparatus |
US2361956A (en) * | 1938-12-09 | 1944-11-07 | Sperry Gyroscope Co Inc | Automatic position indicating system |
US2422180A (en) * | 1943-06-08 | 1947-06-17 | Westinghouse Electric Corp | Antenna positioning control |
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0
- NL NL81953D patent/NL81953C/xx active
-
1947
- 1947-01-30 US US725364A patent/US2487429A/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
US2487429A (en) | 1949-11-08 |